One of the many advantages of using XP Solutions products is the knowledge that we are continually improving the software, adding new features that keep our customers equipped with the latest modeling technology. The following is a list of changes made to each version of the software. VERSION 2016 Service Pack 1, 17.1 (Officially Released 6 April 2016) Enhancements

Install from the command line use the following syntax: e.g.: xpswmm2016.1.exe /i /q SetupType=Standalone LicenseFile=C:\xpswmm.xcf To uninstall from the command line e.g.: xpswmm2016.1.exe /u /q

Interface Maintenance:

The special Pump 5 dialog buttons of insert and delete are now functional. These had been inadvertently disabled in 2014. A workaround existed by using another special object type and adding rows in that dialog.

The formatting for the column header for MapInfo exported data has been updated to allow the files to be compliant with external GIS programs. Previously the MapInfo files could only be read by XP programs. Both node and link exports have been tested with various GIS programs.

With the introduction of the 2016 release some groundwater "Drain to" references were not being migrated when older version models were opened. This has now been fixed and the groundwater flow destination node and link names are no preserved from old models opened in the new version.

The release of 2016 created a situation where a few Integrated 1D/2D models executed correctly and created the model results. However the 2D Map results would not load. No other symptoms or messages were present. The code exception that presented the model results from displaying has been corrected. Note: very few models experienced this issue and it may not be realized in all your models.

Help links have been updated for Infiltration methods as they had previously went to inactive pages and required some redirects to be made

An issue with weir display that was introduced in 2016 has been fixed. In that version weirs were not showing up as rows in xptables. This is fixed in 2016.1

Several crash reports have been resolved around memory crashes for large models with DTM and displayed contours

An issue with long object names containing spaces was introduced in 2016 version. The 2016.1 version has resolved this issue and long object names are now permitted with spaces in the name such as "Long Link Representing the Ditch".

In 2016 version the Pollutant List dialog would only open if the Gauged Pollutants was enabled. This has been fixed so the Pollutant List is independent of the Gauged Pollutant choice as it was in previous versions.

The software uses two different routines for shading flooded areas with respect to Inactive Area polygons. With the "smooth contour" option a half cell of padding is added so that the contours are complete and continuous. If contours or fill is selected then the color shading will not pad a half cell in to the inactive area.

After a multilink is being digitized pressing the ESC key allows more multilinks to be digitized at a new location not appended to the last. Previously the subsequent conduits were single links.

An intermittent issue with some buttons being disabled in the outfall dialog has been resolved Rotated grids should use the XP2D Interface Utility when exporting to ASC grid files. This utility is

located in the Tools->Launch Application menu. Future development will allow rotated grid map results to be exported directly with a right-click.

A few models have had multilink name and index issues. These have been fixed for 2016.1 but it may be necessary to export the model data to XPX or other format then import to 2016.1 to fix the database corruption errors.

In the Dynamic Long Section View the user can toggle on/off the various toolbars. View->Toolbars... to control the 3 toolbars.

Some models in 2016 where not persistently keeping the graphical encoding selection. This has been fixed in the 2016.1 release.

A few models have displayed strange behavior when going to the dynamic long section after a solve for multilinks. This has been fixed.

Maintenance Engine:

A few models when solved with the choices of 64 bit and double precision failed to load Runoff binary results in the Review Results tool. This issue has been resolved by ensuring all header and indexing in the file is compatible with the 64 bit single and double precision choices.

Some bridge links with and without piers were not properly calculating the user-defined closed conduits to represent the flow under the bridge in version 2016. This resulted in no flow through the bridge. This has now been fixed and the geometry is no properly calculated.

The EpaSwmmReader.exe utility that converts SWMM5 files has been updated to include the processing of very long time series and long object names. Object names can be up to 80 characters and time series to 40,000 records.

The summary simulation start and end times has been updated to use the start and end times of each individual storm or scenario at the end of the model output file

Table R2 in the model output file that summarized hydrologic parameters has been altered to no longer truncate some parameter, as this issue was introduced in 2016

VERSION 2016, 17.0 (Officially Released 10 December 2015) Model Building & Setup

Object names such as links and nodes and diversions (pump, orifices, weirs etc.) can now be up to 80 characters in length. Objects with names longer than 20 characters will be referenced in the .out file with a database index and a legend due to formatting in tables. XPTABLES will use the full object name.

Automatically assign catchments to nodes using several methods: 1) select from all nodes inside catchment, 2) select single node nearest centroid, 3) select single node nearest vertex, or 4) select from all nodes in model. The program determines each of the preceding types for each Catchment ID and provides a user interface for the user to select their choices.

Time Series Outputs Flow Lines can now be imported from GIS files of polylines. Hydraulics Job Control now contains a field in the dialog to turn on the Initial Water Surface

Elevation and enter the initial value. The configuration parameter ZREF=X where X is the initial elevation for all nodes in the model has been added to the user interface. This parameter applies globally to all objects in the model. Varying levels are supported in each node dialog.

Connect and exchange data with Excel Workbooks with the XLSX file extension using the GIS Link using ODBC. Previously this was restricted to Excel 97-2003 Workbooks with the XLS file extension.

Set transparency for background images. This allows an aerial photo to be shown as a watermark or have less prominence against flood maps and other layers.

Standardize work flow by specifying default templates. Within organizations or based on types of models a standard or default template can be used to load common data and program formatting. The defaults can be edited in the Tools->Application Settings->Default Template Metric and Default Template US. New models based on a default template can be created using a new icon on the toolstrip and from the File menu.

Generating Ground Elevations From TIN will now produce a message with the number of nodes that have been modified.

Automatically calculate the orifice area for rectangular and circular conduits from a Calculation dialog. This essentially allows dimensions rather than a precomputed area to be input to the model.

When a list dialog is opened a starting row is introduced to facilitate a copy from the buffer. For example, if a hydrograph is copied in another program then the User Inflow dialog is opened in XP a blank row will be introduced which can be right-clicked for Paste.

When importing from SWMM5 the conversion utility will now use a default of 0.0 for the Initial Abstraction to be compatible with SWMM5 which does not have that parameter. This was previously a value of 0.2 which is a typical default for the SCS method.

2D Enhancements Convert user inflow hydrographs from TS1 files (new utility). These files are typically exported

from the Drains program for input in to Tuflow. The utility reads the TS1 file and generates the XPX file with the user inflow hydrograph data. Please note that at the current time the hydrographs are imported but not enabled, as this step requires the User Inflow Flag to be turned on in another step.

2D diagnostics can now be selectively displayed such as only warning and error and not check messages. Each message type has a unique color such as yellow for warning, red for error and blue for check.

The summary table for Evacuation routes reports the x,y or easting and northing location. Simulate 2D models directly in US Customary Units. In the 2D Job Control select Use Project

Units and the internal calculations will be US unit based. Previously US unit models were pre and post processed to metric.

2D Evacuation Routes are now updated and displayed when modeled with scenarios. The latest Tuflow Utilities are included in xpswmm 2016. The latest Tuflow release has been incorporated in to 2016 version (Build 2013-12-AE).

Sewer Enhancements

Sewersheds. This new layer is made of polygons that can be attached to Hydraulic nodes for the purpose of visualizing and calculating the sewershed area for dry weather flows. They are created and edited in a similar way to catchment polygons. This new layer is stored in a SpatiaLite database that is very efficient for vector data.

Results/Reports

World File. When using Tools->Export Graphics a world file is now exported with the graphic and a world file can be separately exported as well.

Compare and create a difference .xmdf file from more than one simulation with a new utility. This difference file can be added to the interface to show maximum and time series differences between two model runs.

Other Enhancements A new WIKI styled online help is now available with the software. Help from dialogs and

windows now point to appropriate redirected URL on help.xpsolutions.com. More specific Tooltips are displayed for each of the Basin Optimization options mentioning if

pipes sizes and storage are increased or decreased with the selected choice. License Tracking. The File->Properties dialog now displays the license used to create the model

and the license last used to edit the loaded .xp database file. The availability of the RTC module is now included in the Help->License menu which loads the

License Detail dialog. Here you can see all license limits including modules and node and 2D cell size limits.

Network licenses are now built in to the license configuration file. Network licensing can only be obtained with this option enabled in the configuration file.

This version 2016 and later versions no longer supports parallel port (Sentinel C Plus B) hardware locks. Only Sentinel SuperPro USB locks are supported in the current version.

The xp diagnostic has been updated to include the network option if present in the xcf file. To remove confusion the text box related to Surcharge Elevation of storage nodes is grayed out for

the case of Use Spill Crest Elevation as it does not apply. An opportunity to beta test GPU solving for 2D only models exists with xpswmm/xpstorm. This

feature and future add-on module can be enabled for a limited time for testing by contacting XP Solutions.

New graphics for the xpswmm/xpstorm opening banner dialog and the About dialog have been incorporated in the 2016 version.

A new, more informative message has been created to indicate that the number of nodes or links has been reached when the number of objects compared to your license limit has been exceeded.

The software now displays water marks in the lower right hand corner for license that are Training, Evaluation and Authorized XP Solutions Partner.

The latest Sentinel Drivers 7.6.8 is now used in version 2016. This may require a reboot of the computer at the end of the installation if the drivers were not already the most recent on the computer before the installation.

Maintenance

Some minor alignment of results in the .out file have been performed. Windows XP is no longer supported in xpswmm 2016 and xpstorm 2016 and later. Soil Type and rainfall depth have now been added as fields for selection in XP Tables for the LA

hydrology method. 2D diagnostics can now be selectively displayed such as only warning and error and not check

messages. Each message type has a unique color such as yellow for warning, red for error and blue for check.

External data (from Excel or similar) that is pasted into XP Tables is now stored and recalled even if the XP Table save dialog is not used. If the user saves the project the XP Table data is permanently stored in the project.

Text size and color and font for evacuation cutoff can be adjusted for display purposes. An issue with exporting to ASC Grid files for very large models has been addressed. Very large

models can now be successfully exported from the interface as opposed to requiring the export to be performed using the 2D Utilities. Both options are now viable for large models.

When creating a new xp project database and after assigning a project name the user must now select the units and press continue. After that step the new project creation can be canceled.

An error preventing solving using the EPA SWMM 4 Hydraulic solutions has been repaired. When the hardware lock has been disconnected the program will now give a clear text message

when closing rather than a program crash message.

The crown of top of the weir is correctly identified as Weir Crown Elevation in the RTC dialog. It had been referred to as Weir Surface previously. This is the elevation that the weir uses to switch to orifice flow from weir flow.

Conduit Profile Design and Natural Surface Offset and Elevation pairs can now be edited in a table in xptables by adding the variables "Link Design Surface" and Link Natural Surface". Previously these were picked from the list as Elevation and Offset.

The field info for the conduit Flows: Free, Downhill only and Uphill only correctly return the string value of 0, 2 and 1 respectively for XPX import/export file preparation.

The Global Storm and Scenario names are prevented from allowing some special characters that cannot be used in the subsequent file names for the result files.

An issue regarding storage nodes with constant surface are has been resolved for the xpswmm5 engine.

The software now prevents the creation of Global Storm Names that cannot be valid file names. The 1D/2D Interface Line Profile tool has been fixed to report the correct associated cell elevations

used for this 2D line boundary. The Properties of River Links now include the ability to edit the font for the River name. Change

font type, color, size etc. A program error that prevented the Properties for Evacuation Routes has been fixed for the 2016

version. Users can now specify the size, color and fonts used for the cutoff times. The Find Object... <CTRL>+F menu option has both node and links checked as the default. When viewing water quality land use in xptables the row order can be changed: When the cursor

changes from an arrow pointing to the left to a regular mouse cursor, click and hold down the left mouse button then drag the row to the top. Release the left button.

In the case of some large models using the Sacramento Hydrology method there was some cases where the automatic initialization for unit hydrographs was insufficient. At that time the workaround was to use the configuration parameter SAC_UI=X where X was a large enough value such as 500. This has been fixed in 2016 version and no manual editing using a configuration parameter us required.

The selection of UK hydrology parameters in XPTables for the Variable PR has been fixed to include all dialog parameters.

An issue of more than one subcatchment in a node using the UK variable PR method has been resolved. Previously, the software would generate a false error message related to slope.

2D/2D Interface lines are now treated as other polylines and can have a vertex added. The loading and saving of color graduations for layers such as 2D Maps Water Depth and Elevations

now includes the first and last peg colors. Arch Pipes, Horizontal and Elliptical Pipes are now selected from drop down lists. Previously these

shapes were selected by using a major axis and then picking a closest size. The list now removes any ambiguity and the direct size conduit can now be selected from the list. Old models are converted from the previous dimension to the new list selection.

TAB allows navigation from field to field in all dialogs including UK hydrology, XPWSPG and LID where it was not previously implemented.

The EPA SWMM input file reader now supports commented subcatchments. Previously the reader could not tolerate rows starting with an "*".

The 3d view of layered flow constrictions now appropriately draws differences between depth of layer and specific crown(obvert) elevations.

When ridge and gullies have vertices inserted the order of the existing data in the table is maintained. New elevations can be inserted and interpolated.

When a model is rerun a new range will be populated in the dialog when the range is restricted for display purposes such as Max depth.

The Izzard Tc calculation has been updated to use the specific equations for US Customary and Metric units.

A display error while viewing bridge links in Review Results has been fixed. In that result view if more than one link was selected the bridge hydrograph would be the sum of all of the hydrographs in the selection set.

The extent of the colour in 1D channels when using Water Level Lines (WLL) is representative of the width of the flow in the channel. 2013 and 2014 versions where colouring in the zero colour to the extent of the WLL.

Several Tc calculations have been updated to correctly take in to account the units. In some cases corresponding equations for metric or US units where used and in other cases conversions are made and the native equation is used which was typically US units.

The Global Database records for RDII can now be both imported and exported using the Import/Export External Databases wizard. Previously only import was supported but now we can have records both imported and exported allowing changes in XP to easily go back to a referenced geodatabase or other tabular source.

An issue with reading external flow files has been fixed. In some cases the data was being read as dd/mm/yr when mm/dd/yy was selected.

The Uniform Loss and SCS Loss method infiltration records will now copy all data when the global database record is duplicated.

A new warning has been implemented when the Runoff time step is less than 60 seconds: "WARNING: RNF: Wet Time Step < 60 seconds increases run and graphing time and may not be optimal for the selected method.

The ESC key has no function while digitizing trigger points for dynamic elevation shapes. Previously pressing the ESC key while editing the Trigger Points layer created a trigger point at the current mouse position.

Bridge Link details can now be viewed in xptables. A group (folder) can be selected to view/edit all Bridge Link dialog data.

An issue involving the constant inflow of a river link node has been fixed. Previously a value ending with 0 would have the 0 removed after closing the dialog. 4 decimal places are now stored for this field.

All curvilinear unit hydrographs for SCS now use a Gamma function. In versions prior to 2016 there were hard coded UH for 256, 284, 323 and 484. To invoke the previous computation use the configuration parameters SCS_484_UH, SCS_323_UH, SCS_256_UH and SCS_284_UH.

Runoff Node dialog changes can be copied and pasted without having to first close the dialog to commit the changes to the database. This update is for both the Runoff node dialog and the Subcatchment dialog which in recent versions only copied and pasted committed data by first clicking OK on the dialog.

Using the help button in the Hydraulics Storage Node Data dialog will launch the correct help screen. In 2014 this dialog did not jump to the correct help section.

An issue where evacuation cutoff markers where not removed on a new model run when the evacuation route is removed has been addressed. Right-click on the Evacuation Route Cutoff Times layer and choose Clear to remove them.

Various updates to the EPASWMM Reader Utility such as supporting a better conversion for Curve number loss and skipping commented (inactive) rows and better name handling.

A warning message will be displayed for the combination of 2D GPU and the Double Precision selection in the 2D Job Control. This message is appropriate since the double precision significantly reduces run time and should only be used if necessary.

Modifications have been made to make the natural channel cross section import more robust when imported from a SWMM5 input file. Previously some files would import without the cross section being connected to the reach.

Time Series Outputs->Head / Velocity Points can now be imported from GIS. Right-click on the layer and choose Import From GIS to create the points from MapInfo or ESRI Shape files.

When a Natural Channel Link is being deleted a message now appears allowing the user to keep or discard the associated Natural Section shape.

Missing Bridge link data such as reach length and roughness now generate warning message before solve. This data if missing will not allow flow to go through the bridge link.

The flow unit (cfs or cms) is now displayed in the tooltip for the Inlet Capacity Maximum Capacity field.

A correction was made to the spelling of the header in the materials csv file. Edits made in the DTM builder table will now be used in the triangulation process. In previous

versions these new edits were not part of the triangulation and only the imported data was used. Some special cases of SCS method with Metric Units reported incorrect runoff depths in Table R9.

This has now been fixed by appropriately accounting for the units in all cases. An issue involving the shifting of the time base when simulating multiple Snyder hydrographs has

been resolved. All unit hydrographs are now independent of each other and are no longer influenced by other subcatchments.

Error messages are now triggered and displayed when solving a Sacramento method hydrology model and the templates are not present. Those templates can be obtained from the Resource Center at: http://xpsolutions.com/Software/XPSWMM/Resource-Center/.

A previous case changed in 2014 "FB 5464" was an initialization issue not only about Global Storms but for all models using multiple Green Ampt infiltration rates. Until version 2014 the software recognized only one set of green ampt infiltration values per model run. This has been fixed since 2014 version and may result in large differences in Runoff flow from earlier versions.

User defined closed conduits can now have the tabular input data graphed. Choose Depth vs. Area, Wetted Perimeter or Surface Width. These graphs like all others can be edited and exported by first right-clicking on the graph.

The "R" in the RTK method now has increased precision to 4 decimals. Some text was misaligned in the External Database Wizard when switching object types. This has

been fixed. Options to select alternative analytical engines still in development has been removed. These

options were available in the Configuration->Mode Properties->Methods dialog as SWMM5 and XPSWMM5. They can be enabled by adding the following items to the swmxp.ini file: [DEVELOPMENT] ENGINISSIMO=ON SWMM5=ON

An issue with editing the start date and time of rainfall records introduced in the 2014SP1 version has been addressed. In that version the Job Control Flag "Use Simulation Start Time For Rainfall Event" was preventing the edit even if the flag was in the correct state to allow editing.

The program has been upgraded with the MFC feature pack which allows dockable tabbed windows.

A few aesthetic changes have been made to dialogs so that text was not hidden or overlapping. The creation of contours on depth flood maps is now nearly continuous. Earlier versions often

created short line segments due to clipping at inactive areas and grid boundary limits. Use the xpswmm linked Tuflow dll similar to a standalone TUFLOW license. However it must be

called from the xpswmm engine which reads a .dat file. This is documented in the Knowledgebank on the support portal in the article called "Use the xpswmm dongle as a TUFLOW license".

In certain cases with large numbers of storms and large numbers of scenarios the Storm and scenario label were not well ordered. This has been fixed and the correct scenario name and storm name and the data is well ordered when displayed in xptables.

When creating river links a new dialog assigning River Link Name and drawing properties such as font and color will appear. Also a new 10pt font is set as the default.

An issue relating to imported multilink conduits not having their conduit flag active has been repaired. Now when importing conduits and mapping to the Conduit Flag (_CONDFLAG) a value of 1 will turn on the flag. In addition this development also removed a crash on some files that mapped to the Special Conduit shapes.

The LID capability introduced in 2014 as a beta has been withdrawn from 2016. It will be reintroduced in a future version with new dialogs specific for SWMM5 based modeling.

A few crash reports on 2D Result load have been investigated and resolved. A significant improvement in software stability has been achieved in this area.

A speed improvement has been implemented for viewing 2D Post processed results by increasing the buffer size.

A warning message is now generated if Max of Storms is selected in Global Storms when attempting to show the Dynamic Plan View. That combination does not produce a time series to be animated and hence the user is prevented from that false selection.

The export of ESRI Grid has been enhanced to prevent the export of holes due to the sampling on rotated grids.

VERSION 2014, SP1, 16.1 (Officially Released 17 November 2014) Enhancements

Automated Storm Generation. New Storm generators have been added in the Global Database under Rainfall -> Create Storm: Chicago Storms, and U.K. FSR/FEH storms. Several durations can be chosen at one time and all storms generated using the appropriate parameters describing the intensity from an IDF curve.

A Grids Layer is added to Topography. It accepts polygons to expose the underlying triangulation of the xptin. Note: displaying many thousands or more of triangles will slow the performance of the screen draw.

The software now imports and exports to LandXML an expanded set of variables including catchment polygons, catchment attachments and runoff node data. This is in addition to the typical pipe network and is accomplished by publishing a new schema for LandXML defined by XP Solutions.

RTK parameters can now be imported from External Databases such as Excel, Access etc. This import allows an easy import of the parameters that are determined by using the EPA SSOAP Toolbox.

An updated version of the Basic-Tables.xpx is now included in the Templates folder. If the XP SWMM5 engine is selected the Review Results of Runoff nodes will show the node flow

time series using the same formatted results file from the default 32 or 64 bit analysis engine The master templates have been updated for US and metric units. These and other sample

templates can be found in the Templates folder and on the xpswmm/xpstorm wiki page at: https://xpsolutions.atlassian.net/wiki/pages/viewpage.action?pageId=491525

A New Resource Center for xpswmm and xpstorm has been created at: https://xpsolutions.atlassian.net/wiki/pages/viewpage.action?pageId=491525 This site contains templates, getting started tutorials and sample files. These are no longer part of the installation package and are continuously updated on the mentioned site.

UK rainfall provided in .REDX files can be directly read by referencing in the Global Database->Rainfall->Load Rainfall File. This same format is also used in MicroDrainage and other software.

A check is now in place that checks the time of concentration (R_TC) against the wet time step (R_WET) for the following runoff methods: SCS Hydrology, Unit hydrograph (all but Snyder Alameda), Rational formula. If R_TC < R_WET a warning message is issued: "Time of concentration for catchment XY is smaller than the wet time step. The runoff method is not designed for this and may deliver inappropriate results. Please adjust your wet time step."

The software ships with the latest Tuflow 2013-12-AC engine which powers the 2D module The default maximum number of text objects has been increased to 400 from 40. User can set

other values in Tools->Application Settings->Config->Maximum Texts or by editing the same in the swmxp.ini

Maintenance

The Global Database record rainfall date and time fields are now correctly enabled/disabled with the checkbox in RNF:Job Control->Use Simulation Time For Rainfall Event. In 2014 the fields were permanently disabled and the records could not be edited.

Support for large scale printing and plotting has been fixed. The order of operations is to first select the printer and the paper including the orientation in Print Setup. Next go to Page Setup and adjust margins and scale. Choose Preview then Print.

The software now directs users to Load the most up to date LA rainfall file called "LA Rainfall Database by Minute.xpx" from the LA:Runoff Job Control->Rainfall Template->Load File

Depths equal to or under 0.05m or 0.16ft for natural channels are considered to be a value of zero. A zero depth natural channel is a special case meaning use the entire cross section. In order to use very small depth of natural channels then the configuration parameter NATDEEP_0.05 can be used.

When printing from preview of Dynamic Section Views the current panes can be printed The help file has been updated to instruct how the software can use new or older 2 Result formats

(XMDF or DAT) When a vertex is moved on a ridge or a gully the elevation data is no longer cleared. Note: This

movement or inserting and deleting a vertex likely requires user input for new elevations. The rainfall utility will be prevented from execution if there are errors in the rainfall utility setup.

Previously the utility would execute with some errors and fail to run. Improvements were made to the interface which enhance the functionality of Gauged Data. The

data can be viewed graphically within the Gauged Flow dialog. In addition the data will display in Review Results based on the Job Control start and end dates and times.

The SCS Shape factor with field name R_SCS_SHP can now be selected from the Node Variable List for XPTABLES. This field is no longer shared with the Laurenson method.

An error message is now displayed when the sum of the storage node initial depth plus invert exceeds the Basin Optimization maximum water level. This prevents the infinite iterations to the solution that cannot be solved.

The Tc calculator has been fixed to correctly calculate the Time of Concentration in minutes for the Kinematic Wave in both US Customary and metric units by employing appropriate coefficients

An issue with exporting to ASC Grid files for very large models has been addressed. Very large models can now be successfully exported from the interface as opposed to requiring the export to be performed using the 2D Utilities. Both options are now viable for large models.

The user selectable layers of Time to Peak V and H can now be exported to GIS as ASC grid files and shape and MapInfo files

More comprehensive error messages are written to trap user error for Type 3 outfalls. For example the selection of Stage History without entering the stage history data generated an error message that at least two rows of data are required.

RTK parameters can now be imported from External Databases such as Excel, Access etc. This import allows an easy import of the parameters that are determined by using the EPA SSOAP Toolbox.

When deleting a parent scenario all child scenarios are also deleted. This fixes an issue where previous versions would allow child scenarios to reappear when a model was reopened.

The bridge dialog Max WSEL default has been changed to 0.0. In addition the tooltip for the field states "Bridge Maximum WSEL".

A small error that prevented an entire rainfall series to be displayed in the InterfaceUtils.exe program has been addressed and the full time series display is no longer truncated

Corrected initial application of rainfall from Rainfall-Flow Area polygon so that exact rainfall rate is applied throughout the first rainfall time interval without any interim stacking or padding of initial volume

Inactive object label font color changed from white to gray in xptables

New default colors and line sizes are set for most 2D and topographic layers. This is easily customized by each user if a template is created and employed for each new model.

The dialog and column label for 2D head and flow boundaries are more descriptive for the units required in the second column

Exported time series from Review Results is exported as UTF-16 text files. To view this as gauged data required converting to ANSI/ASCII however, this type of file is now directly supported without any data conversion required.

When using the XPSWMM5 engine, intermediate processing points can be viewed as unique model result locations so that water levels down the conduit can be viewed in the Review Results and the Dynamic Long Section

Modified basket handle conduit areas are now correctly computed and reported The Flow Constriction layers can now have their geometry exported to GIS. Since this layer can

support polylines and polygons two sets of GIS files are produced in each export. One for any polylines and another for any polygons.

2D Elevation Shape changes dialog have a label fixed as well as now allowing changes to be applied to all objects and selected objects. This tool is particularly important for adding buildings by a constant adjustment to all polygons based on the existing ground elevation.

In the 2014 release some text layers of CAD files appeared very large. This has been fixed in the service pack. A work around exists for 2014 and is available in the Knowledge Bank of the support portal.

A faster algorithm is now being used to locate and update breaklines with a large amount of vertices

A configuration parameter is automatically inserted whenever the total number of links to a node exceeds 20. The parameter is MAX_INCIDENT=X where X is calculated as the max_piers+2 for a bridge link.

The user input field for the groundwater flow target has been restored after being removed in the 2014 version

The switch to add the button to call the Malaysian IFD dialog from the rainfall dialogs is found in Tools->Application Settings->Config->New Malaysian IFD. On means add the button Off will hide the button.

An issue with continuous simulation with snowmelt and Temperature Interface files has been resolved. These type of simulations can now be solved simultaneously or consecutively.

The software is now tolerant of the case when tables were attempted to be viewed but no tables in the list are selected. A message is now produced Indicating that at least one table must be selected.

The restriction of velocity vectors can now be anywhere in the total computed range and does not need to start at 0. Also the labeling of velocity values is suppressed and does not show for dry cells.

Updated Master Templates have been included with the software installation for US Customary and Metric units. Users are encouraged to create their own templates for geographic or modeling purpose. Additional templates can be downloaded from the xpswmm/xpstorm resource center.

The reverse direction for river links has been disabled. This can be accomplished by converting to single links reversing then making them a river link.

2D results files larger than 4Gb can now be loaded in to the interface for display and animation. To prevent large files the default value for the 2D Map Output interval has been raised to 120 seconds and the default map result types are Velocity, Water Depth and Water Elevation.

An issue with the 2D Engine has been resolved for Green-Ampt Infiltration calculations. This is fixed by using the latest Tuflow Engine 2013-12-AC. In addition a warning message is generated if initial moisture is greater than porosity and US Customary unit models are now using the correct units.

The Color ramp can now accept input of color pegs using values that are less than 1. Previously the field would not except a leading 0 or "." eliminating the ability to have a very small value.

When appending new river links to an existing river link the software will now allow the new links to have cross sections computed. In the 2014 release the appended river link was not initialized to being a natural channel and a workaround of switching back and forth to a single link then natural channel shape was required.

The arrow on the Water Level Lines can be hidden or shown. FYI, these are not directional lines and the line direction and arrow have no meaning.

The Add and Delete buttons for the Link and Node Data Defaults in File Properties dialog have been moved to the upper right hand corner. This movement allows for all display sizes to access the buttons.

2014 SP1 fixes an introduced issue with 2014 version that rainfall date and time fields were not enabled/disabled with the Runoff Job Control->Time Control->Use Simulation Start Time For Rainfall Event Flag

The Bransby Williams equation in the help is updated to show how it is used in the program with the US Units. In the case of metric units the software converts automatically the metric input to US units for use in the equation. Output in both cases is minutes.

An issue using global storm names with spaces and 2D modeling is now resolved. Names with spaces are allowed. Previously this would prevent results from automatically loading at the end of a solve and caused an error when exporting the results to GIS.

Several Tc calculations have been updated to correctly take in to account the units. In some cases corresponding equations for metric or US units where used and in other cases conversions are made and the native equation is used which was typically US units.

The units of Hazard were incorrectly written as m³/s as opposed to m³and ft³/s rather than ft³/s. This has been corrected in the current help file.

Nodes joining river links and other link types are now the full node dialog. This allows manually updating the Spillcrest to accommodate for an elevation other than the one automatically determined by using the top elevation of the channel.

2D Fill areas now use 99999 as the default elevation. Also the elevation for the first fill area is now persistent. This fixes an issue in the 2014 version where the first fill area would not remember the entered value and the default was -99999.

An issue related to the use of Global Storms and Scenarios and Basin Optimization has been fixed and the interface will now update with the new pipe and storage sizes.

The delete key action is disabled when a link has its upstream node but not the downstream node. This prevents a software premature close that was present in earlier versions using that combination of events.

In the 2014 version the catchments could not be imported using XPX commands. This function has been restored.

Global Database buttons are now appropriately enabled/disabled based on context such as if there are existing records.

The special Pump 5 dialog buttons of insert and delete are now functional. These had been inadvertently disabled in 2014. A workaround existed by using another special object type and adding rows in that dialog.

Tooltips have been restored for the Runoff Node dialog for items such as area, % impervious, width and slope.

The 2D Legends will now correctly display the result type when simulating scenarios and global storms.

The units of Hazard were incorrectly written as m³/s as opposed to m³and ft³/s rather than ft³/s. This has been corrected in the current help file.

The Bransby Williams equation in the help is updated to show how it is used in the program with the US Units. In the case of metric units the software converts automatically the metric input to US units for use in the equation. Output in both cases is minutes.

A separate installer is now created for the evaluation version. It has a set of small sample files and is available from www.xpsolutions.com.

The output file has been updated in the section regarding the configuration parameters. The installer has been updated to be more efficient and tolerant of missing or incorrect 3rd party

libraries. An updated version of the Basic-Tables.xpx is now available in the resource center. Evaluation version expiry has been extended to Feb 1, 2016. Once installed the software can be

enabled for 30 days. VERSION 2014 (Officially released 28 May 2014) Hydrology

200 Global Storms The maximum allowable Global Storms has been increased to 200. GIS Cookie Cutting for Hydrology Assign area-weighted or dominant type attributes to

catchment hydrologic methods from GIS polygons. RDII reference in XPTABLES Added reference for Rainfall Derived Infiltration and Inflow (RDII)

within XP Tables for Runoff Nodes. New Tc Calculator Methods Added the Snyder Method and TR-55 option to the list of available

methods within the Time of Concentration Calculator. UK Hydrology Template A file has been added to the Templates Folder. This template file and

sample file have UK Winter and Summer Rainfall Patterns. Annual/Monthly Adjustments of Hydrologic parameters Annual and monthly adjustments for

hydrological parameters can be completed globally and by node to account for changes over time. Hydrology

GIS Cookie Cutting When catchment data exists in GIS layers those polygons can be overlayed by xp catchment polygons. Then using this new feature the catchment data in the model can be derived from the intersection of the catchments. Access this by right-click on the GIS layer with subcatchment data.

GIS Cookie Cutting Reporting The GIS cookie cutting for hydrologic parameter reports to a csv file report that can be viewed in Excel.

Stormwater Modeling

New Rainfall Format The program can now read an XML type of rainfall file called .REDX files. These rainfall types are typically for design events in the UK. MicroDrainage uses the same rainfall file type.

Inlet Capacity In 2014 when Inlet Capacity is chosen without both a closed conduit and an open channel being present for the dual drainage the following happens: 1) The original node has an invert equal to the spillcrest minus 0.01 ft or 0.001 m depending on units. 2) A new node is created using the original invert and a spillcrest equal to the original spillcrest minus 0.01 ft or 0.001 m depending on units. 3) A rating curve applies between the nodes based on the Inlet Capacity.

Sanitary Sewer Modeling

RTK Parameters in xptables Added reference for RDII within XP Tables for Runoff Nodes specifically.

Multiple DWF inputs Added support for multiple dry weather flow input types for a single node in hydraulics mode. Each input can be Direct Flow, Unit Flow Rate or Census Based. There can be a maximum total of 11 different dry weather flow rates for a single node.

River Modelling

River Reach Layer A new link tool has been introduced to allow the creation of a river reach. When a River Link is created, a new layer appears in the Layers window.

River Link Object A River Link tool has been introduced to xpswmm/xpstorm to enhance and improve open channel modeling in 1D and 1D/2D scenarios.

HECRAS Channel Import HEC RAS River Reaches are now imported directly into xpswmm/xpstorm via the River Link. Models containing a single reach, or multiple reaches can be directly imported from the File menu.

HECRAS Bridge Import When importing a HEC RAS model, the Bridge Data can now be read and the Bridge is created.

Hecras Outfall Import New outfall configuration option added which allows for a natural channel to define the outfall flow opening of a model - this is automatically populated when importing a HEC-RAS model.

Channel Outfall Type New outfall option available - allows selection of a natural channel shape to be used as the cross sectional flow area opening at the tailwater of a model, with ycrit, ynorm or ymin to be used

Enhanced Cross Section Display The display of the Natural Section Shape includes larger vertices and colour coding to identify the points used for the left and right bank stations.

Model Building and Setup

XPX Import for Inactive Data Clarified XPX Import options relating to Inactive Data in Help and fixed link to Help File from dialogue box.

Object Digitizing/Snapping When moving a polygon or polyline vertex and the snap is on the moved vertex will snap the the vertex of other visible objects.

Object Selection/Grouping All links and nodes within a GIS polygon can be selected. Select the polygon then right-click to select nodes and links within that polygon.

DTM Builder A new dialog appears when creating an xptin surface using the DTM Builder. The dialog reminds the user that the process cannot be cancelled once it starts.

Object Names Node and Link names can now be copied/pasted into xptables by adding the table variable Node/Link Name and performing typical copy/paste procedures.

User Interface

Dual Drainage When converting from single to multilink or using the Dual Drainage Tool all Conduit Factors will be replicated in row 1 of the multilink from the single conduit data.

BMP/LID/WSUD/SuDS BMP descriptions can now be stored in the Global Database in a group called (S) BMP. The data can then be referenced at more than one location allowing effectively a typical LID to be created once and placed regionally.

Invert Generation Tools Under the tools menu, improvements were made to the functionality of the 'Generate Elevations from Tin Surface' dialog allowing all or no rows to be selected.

License Number Display The license number that last saved a model is displayed to File->Properties.

Watermarks A watermark was added to the Educational version of the software. The words 'Academic Version' are displayed across the Network view in the interface.

Layer Control Panel The status of the Layer Control Panel tree is saved to the .xp file. All Layer expansion is remembered the next time the file is opened.

Modify Conduits Modify conduits now uses a choice button between preprocessing of changing only short pipes in the engine based on a time step.

DTM Size Very large data sets can now be loaded in to the DTM Builder. User's are encouraged via a warning message to directly load data to be triangulated if data sets are large.

Dialog Style Customization Dialog window background, buttons and other dialog controls allow style changes based on the operating system. Choose between WIN7, WIN8 and XP styles in Tools-Application Settings->Config->Color. The styles are set on install based on the OS and can be altered.

Template Updates New templates and updated templates have been created for the 2014 version. Specific rainfall templates for Australia have been added in a new Australia folder from Templates.

Results

Multiple HGL in Profile The Long Section View now shows Multiple HGL for Scenarios and Global Storms. The colors follow the Review Results Options.

Probability Graphing Added cumulative probability/percent exceeding (Hydromodification) graphs to Review Results. Every result graph can be converted.

Colour Shading Transparency 1D and 2D Map and TIN transparency can be set with a numerical value between 0.0 and 1.0 in addition to the transparency slider tool.

Looping Video Animations 2D Animations can now loop and run continuously by selecting the continuous play button on the media control.

User-defined Hazard User-defined Hazard Schemes can be applied to create 2D Maps. To access the tool use Tools->Results, Post Processing and choose Apply Hazard Scheme. A user defined hard equation can also be generated from the same parent menu item.

Contour Labels Contour labels can now be added to 2D result maps when contours are selected. A separate tab allows the details of the labels to be specified.

Installation/Technical

OS Support The Network Server Installation is now supported on Windows Server 2008 and 2008R.

.NET Version The installation executable now upgrades the required prerequisites for 2010 runtime and .NET 4.0.

Faster Processing of Results Software Architecture and numerical techniques have been employed to speed up the processing of user-defined hazard maps when the Debris Factor has been used.

Shape Names/Codes When Importing from External Databases the conduit shape can be imported using the field value or the text value. For example 1 or circular, 2 or rectangular and 8 and natural.

2D Modeling

2D Result Creation A post processing of 2D results can be accessed from the Tools menu. This tool can create user-defined hazard maps such as the Queensland Australia Resilient Floodplains Schedule 4.

Grid Viewing with Ridge/Gulley Ridge and Gulley lines can be edited and viewed in profile with the surface data. Right-click on the item and select Edit Data. Options in that new tool include Interpolation of elevation and applying offsets. Both the DTM and the line elevation can be graphed and exported.

2D Results to GIS Several utilities for converting and comparing 2D results are provided in Tools->XP2D Utility Interface. These include conversion of DAT files to XMDF, creation of GIS files from 2D results and creating a difference file between 2 XMDF files.

Multiple GRID/Domains When using multiple grids subsequent grid extent polygons can snap to existing vertices of other grid extents and the cell orientation will be the same as the grid to which it is snapped

1D/2D Interface Visualization A new tool has been added to resolve issues of a poorly defined 1D/2D Interface line. Ideally these should be located along the top of bank. With a right-click the profile can be viewed with the ground, bed and bank elevations. Buttons allow the creation of a ridge to the bank or bed elevations.

2D Rain on Grid When a 2D rainfall series is used a final zero rainfall value is inserted and the user is notified. This prevents a constant extrapolated last value of non zero rainfall.

2D Result Comparing 2D Results maps can now be viewed together and compared. The results properties can be changed for each scenario within the interface.

User Defined Hazard User Defined Hazard expressions can be calculated and mapped. The expression for hazard can use depth, velocity and debris factor as well as most mathematical operators and constant values.

2D Inundation Time From the Tools->Results Post Processing menu Inundation Duration and Time To Inundation can be calculated and displayed for Depth, Elevation, Flow, Velocity and Hazard for a user input threshold value. For example, a map of duration of a depth exceeding 1m or 3 ft can be calculated and displayed.

Maintenance

Fixed Backwater Elevation field lines up horizontally in the dialog with the Type 2 selection to which this data applies.

When merging objects to a model with GIS layers the GIS Layers are now preserved. After editing a polylink and then clicking in null space to deselect the link the layer control panel

selection count will now be updated. A more complete and explicit message is shown when the number of users is exceeded on a

network lock. Context sensitive help jumps and corresponding help topics have been added for most 2D Job

Control dialogs. The graph button for the data of user-defined weirs, regulators and bendable weirs is disabled

correctly indicating that no graphing of this data is permitted. A redundant result for xptables for a pump's total volume pumped has been removed. The

remaining correct result label is Pump Flow Volume. Increased functionality of Global Storms dialog. The dialog size can be modified and the rows

containing storms can be moved up or down in the list as needed by the user. Default value of 0.01 is set for AFULL parameter which is used for rectangular triangular bottom

and rectangular round bottom conduits. A warning is now issued when a 2D boundary is applied on inactive cells as this forces the cells

used in the boundary to become active cells. Constant values corrected in Tc calculator for Friend's equation. File->Properties->Node Defaults->Node Data has the grid adjusted to better accommodate the cell

widths in the table. Both UCS-2 and ANSI type text files are supported for XPX files and 12da files. Current 12d model

exports are using this new format for text files. Long file and path names are supported for xpx import and other locations. The EPA SWMM converter now handles conduits in parallel (multi-links) with names more than 10

characters. In the case of long names default names are used in xpswmm and the original name is placed in the object description.

Increased flexibility of applying Advanced 2D settings by allowing optional positioning of the applied setting to be on top, bottom or relatively below surface section of geometry file.

Some values of decay had produced computational errors and no pollutant loadings. The SWMM code has been modified to be more defensive and hold higher precision to prevent such an error. Using non zero decay values now generate expected results.

The program no longer checks inactive UK Runoff method data for reasonable and absolute ranges, but rather it only checks the selected method data.

When GIS files in the GIS Files layer are not found in the referenced location xp will bring up a dialog to allow the files to be remapped.

The groundwater flag in the subcatchment dialog is disabled for all methods except SWMM Runoff to which it is applicable as an option to link surface and subsurface flows.

Full name descriptions for regional Hazard Result Types is now included in the 2D Job Control.

BMP Layout dialog can be closed independently of the Treatment Process dialog. Changes to the DTM properties are now saved and will reappear when the model is reopened and

the DTM is loaded. Removed link label option from graphical encoding properties dialog. Label visibility can still be

toggled in the layer control panel. The software generates an error if 0 is used as an Initial Moisture Deficit for 2D Soil Type Green

Ampt Infiltration. The minimum value is 0.001. Rainfall Utility correctly manages storm data that crosses from one calendar year to the next Spatial Reports now show the max flow at nodes in the Runoff mode. The UK hydrology method data only checks for valid data based on the method selected and

ignores all other entered data for other methods. Added explicit culvert and bridge pier [and related information] support for XPX import/export Dialogs were improved: In the Uniform Loss infiltration definition dialog, the text was realigned

and the infiltration record name is included in the header bar. When a single link of type Natural Channel is converted to a multilink the shape selection for the

natural channel is now retained and migrated to row 1 of the multilink. Corrected Evacuation Route functionality to exclude inappropriate non-number data from value

field. An inactive help button in the Pollutant Removal Equation dialog has been removed. The Dialog

Help Icon is functioning and will load the correct help. An introduced error of stripping GIS files when performing a copy and paste of links and nodes has

been fixed. Pasting objects will no longer remove any attached GIS file references. Several variables have new labels for xptables, no without units in the label and the units are

updated for a separate row. The Ruler tool now calculates the Current Slope for the temporary segment and the total slope for

all fixed segments in the ruler line. Improvements were made to the interface which enhance the functionality of Gauged Data. The

data can be viewed graphically within the Gauged Flow dialog. An issue where the selected File Format was not remembered for the User File Selection has been

fixed. This applied to User Defined Rainfall Files and Gauged Inflows to nodes. A parsing error relating to object name lengths was corrected. Fixed an Issue in the 2013 version only that prevented the use of Available Pipe Sizes within the

HDR Job Control Design Constraints. In that version this combination would cause the analysis to halt.

The service pack has fixed the issue for 2013 that prevented some CAD files with Hatching from loading.

A re-initialization issue which caused Runoff results to be greater when using Global Storms has been resolved.

xcf license configuration files are backwards compatible with the exception of 2013 version. Meaning the xcf file for 2014 will work in versions 2012 and earlier. An xcf file for the 2013 version will only work in that version.

A rounding issue which caused the location of 2D head boundaries to change slightly when re-opening a model has been corrected.

The software no longer falsely unchecks the conduit factors dialog when the conduit data is edited in the Bridge Link->Culvert Data.

Several broken help jumps from dialogs have been repaired. Corrections to tabular display of gauged rainfall in order to correctly show rainfall record file when

User Defined Rainfall file is viewed by select Edit. Exporting the current result time step now is now implemented for the 2D Times Layers. An unhandled exception when exporting Maximum 2D vectors such as Max Velocity to GIS has

been fixed.

Reversed changes made in 2013 version regarding consolidating rainfall record date/time information - now displays year, month, day, etc. as separate fields.

The natural channel volumes for left, center and right that are reported in xptables and the output file now match and are computed in the same way. These volumes are computed geometrically and do not use the spatial weighting. Use CHANNEL_GEOMETRY = 0 configuration parameter for backwards compatibility.

Fixed minor spelling error in Project Toolbar. An issue affecting the display of the properties dialogs (grid extents, 2D results, etc.) was corrected. An issue which restricted the length of the file path for User Defined Rainfall files was resolved. The

path can now consist of up to 255 characters. An improvement was made to the 2D Depth/Elevation contours which enables the colors to be

dictated by the user. Certain combinations of restricting the range of 2D Maps and displaying contours would not allow

the contours to be visible. This has been fixed and all combinations are possible. The 2D Velocity Legend can now support a total number of color pegs not equal to 10. The XPTIN solution was updated to VS2012. Changed the Platform Toolset to 2010, to match the

rest of xpswmm/xpstorm 2014. Hydrology Methods dialog of Mode Properties->Methods is now labeled Computational Method

Selection. Necessary files added to installer to render background GIS files. Filters on XP Tables now support multiple queries on the same variable as well as nested queries of

multiple variables. Example: a query on conduit shapes that are both circular and rectangular and have roughness greater than 0.0150.

Importing Polygons by a selection of attribute data is now extended to all 2D Layers such as Active Areas and Landuse.

Skipping 2D results for display purposes for thinning the number of results in plan view is enabled for the new xmdf format results.

The options of having hard or smooth edges is now enabled for 2D colour ranges. Choose Smooth, Flat Start, Flat Mid or Flat End.

An Intensity based 2D Results map can now be reversed just like the Color Ramp. Improvements were made to the 64 bit solver. Interface files generated by this engine are

successfully read into other modes (san, hyd). The TUFLOW 2013 Engine was integrated into xpswmm/xpstorm 2014. While using the VE parameter the volume is now recomputed in the interpolation phase. It was

working for VS but not VE. An issue which prevented some models(containing CAD files)from opening was corrected. An issue which prevented the application settings from being displayed in the interface has been

resolved. An issue preventing the 2D Max Depth results from displaying when using Enginissimo was

corrected. The graphical encoding dialog has been fixed to keep the persistence of the selected variable for

encoding. This issue was introduced on or about version 2013. Additional Data fields now exist for nodes and links. These are accessible from the object

Properties dialog and include: Material, Year Installed and Zone. An issue which caused the Inlet Capacity type to change during export was resolved. Improvements were made to the plotting of 2D Results Contours. The user can now edit the Settings for Malaysian IFD in the Tools->Application Settings->Config

and Main and no longer need to edit the swmxp.ini file manually in an editor. Corrected issue with editing 2D Landuse Global Database Records. WinDes has been rebranded to MicroDrainage and the references to that program are updated in

xpswmm such as File->Import/Export Data->Import MDX Data (MicroDrainage).

When digitizing multilinks double-click will end the drawing and return the Pointer tool to the cursor and ESC will break the attachment and keep the multilink tool.

Number of permitted data points for user defined closed channels has been increased from 50 to 500.

VERSION 2013, SERVICE PACK 1 (v15.1) (Officially released December 27, 2013) Maintenance

When deleting the contents of a layer only the objects within the specific layer are deleted and the objects in layers of the same type are no longer removed

This program maintenance update supplies the missing colour conversions neccessary to enable printing of Review Results that was an introduced issue in the 2013 initial release

Multiple issues with the evaluation registration and licensing have been fixed by recreating evaluation templates and upgrading to the recent version of ElecKey

This service pack has fixed the issue for 2013 that prevented some CAD files with Hatching from loading

Updated the SafeNet dongle drivers for the network installation A required C++ redistributable is now included in the 2013 SP1 installer to allow use of the SWMM5

based engine The check for updates menu item has been updated to use xpsolutions website as opposed to

xpsoftware.com The Hydraulics Job Control Design Constraints routine has been repaired to allow the selection of

Available Pipes. This routine was not working in 2013 version after the introduction of monthly and seasonal adjustment factors.

Fixes issue related to contours changing when the starting value is changed Fixes issue exporting 2D Water Elevations to .shp produces incorrect contour extents 2013 SP1 uses the same definition of surface area for inlet restricted nodes during surcharge as

previous version to 2013. 2013 (no service pack) used the surface node area for the subsurface node.

VERSION 2013 (Officially released August 2013) Hydrology

200 Global Storms The maximum allowable Global Storms has been increased to 200. GIS Cookie Cutting for Hydrology Assign area-weighted or dominant type attributes to

catchment hydrologic methods from GIS polygons. RDII reference in XPTABLES Added reference for Rainfall Derived Infiltration and Inflow (RDII)

within XP Tables for Runoff Nodes. New Tc Calculator Methods Added the Snyder Method and TR-55 option to the list of available

methods within the Time of Concentration Calculator. UK Hydrology Template A file has been added to the Templates Folder. This template file and

sample file have UK Winter and Summer Rainfall Patterns. Annual/Monthly Adjustments of Hydrologic parameters Annual and monthly adjustments for

hydrological parameters can be completed globally and by node to account for changes over time.

New engine option

SWMM 5 Engine XP Solutions has provided a version of the SWMM5 engine including many proprietary enhancements. This new engine is provided as an alternative engine and does not yet support all existing functionality. It also allows a preview to new technology to be found in future versions and products.

Model building and setup

HEC-RAS Import Implemented comprehensive importer for HEC-RAS models - import options include either the ability to import the cross sections, reach layout and downstream boundary conditions automatically or importing only the cross sections.

New Bridge Link New link option to select a bridge and build each section of the bridge in one location.

GIS Layer enhancement GIS Objects can now be selected from multiple GIS layers. Global Storms support for 1D Flood Map 1D Flood Map Results can now be viewed for multiple

Global Storms. More flexible user defined conduit setup User defined conduit dialogue improved to show a

spreadsheet type form that supports copy and paste. They can also be stored in the Global Database as a template to be used at other locations or for other models.

New basin infiltration option Basin Infiltration has been added for storage nodes. The infiltration rate can vary with depth and is reported in XP Tables, in Table E19 of the model output file and the detailed printout for a node reports the amount of infiltration occurring in the time interval.

Prevent flow reversal for orifices A check box has been added to prevent flow reversals in orifices. This is similar to the existing capability with weirs and conduits.

More support for Gauged Pollutant File types Gauged Pollutant Files now supports user defined formats.

Enhanced EPASWMM5 Reader The EPASWMM5 reader now supports user defined conduits. Better AutoCAD Export Export to AutoCAD includes Link Cross Section locations.

Results Hydromodification Added cumulative probability/percent exceeding graphs to Review Results.

Every result graph can be converted. Scroll-over Map Results Displayed 1D and 2D mapped results displayed in bottom toolbar

alongside Z value if they are ticked on. View all Multi-links on Review Results graphs All diversions and conduits can now be viewed in

the Review Results graphs. Each item in the multilink can be viewed by using the previous/next controls on the Review Results toolbar.

Dynamic Section View enhancements Several enhancements have been made to the Dynamic Longsection View including a Loop button added and better support for multi-links.

Results Improvements when using Inlet Capacity Results have been improved for Inlet Capacity subsurface nodes. The depth calculation now considers the surface area in the surcharged case. Backward compatibility can be obtained by using the configuration parameter IR_PRE2013.

2D Modelling New, faster, XMDF results format 2D results now written and loaded in faster XMDF format. Better 2D Warnings New warnings for when: 2D grid extent falls outside the DTM; engine now

checks for 1D errors before generating 2D input files; reduced occurrence of unknown error message for 2D models, user will be directed to the 2D error messages in the 2D diagnostics file; elevations along a 2D/2D interface line are below the initial water level.

Evacuation Route Planning Options to produce time to inundation maps and evacuation route cutoff time for different water depths has been added.

Export 2D Results Filename option On export a file name can now be selected for 2D result sets.

Set Elevation Changes for Multiple Objects Fill Areas, Dynamic Elevation Shapes and Elevation Shapes can now have global adjustments. Double-click on the object to open the dialog and make the change and apply for the selected object, all selected objects or all the objects of that type.

2D Rainfall/Flow Area Improvements Support provided for setting Hydrograph from Runoff Layer option for 2D Rainfall/Flow area. Also, User Defined Rainfall File for 2D Rainfall Areas now supported.

New 2D Head-Flow Boundary Specify a surface slope or a Head-Flow Curve with the new Head-Flow Boundary option.

GIS Export added to 2D Grid Extents layer. Exports Polygon, Grid Step Size and Angle of Orientation. Import also now supports importing the above grid properties.

XPTABLES shows 1D/2D Water Transfer New column added in XPTABLES to show 1D/2D Water Transfer.

Run 2D without Dummy 1D Node 2D model no longer requires a dummy 1D node. User defined Cell Centre Elevation precision Set the precision of the Cell Centre Elevation

display from 0 to 10 decimal places in Grid Extent Properties. Typically this will be 2 for US Customary projects and 3 for metric models.

2D/2D Interface Wrapping Wrapping can now occur over a 2D/2D interface when drawing grid extent.

Memory Improvements Reduced memory usage when building 2D model at the start of the analysis.

Better Support for Large Surfaces Directly read Grid File instead of loading a TIN in the interface to save time displaying the DTM Surface when working with large datasets.

Advanced Parameter Settings Additional commands can be written at the Top or Bottom of the .tgc file via Advanced Parameters in 2D Job Control.

User Interface

Slope added to Ruler Tool The ruler tool now displays total slope of a multi-segmented line and the slope of the last segment. This can be used to determine and enter the slope for catchments and other fields.

New Hotkey F3 for Conduit Profile. Hotkey F3 now allows users review the Conduit Profile dialog for a selected link.

Go To Network View Added option to allow View-Go To network view location search to be selectable between US Customary and Metric X,Y position units.

Longer Interface Filepaths Permitted Interface file names are now permitted up to a file and path name of 256 characters.

Updated Visual Style Options xpswmm dialogs can use a new visual style using the Application Settings option in the Tools menu. User can enter Windows7, Windows8, XP style.

Increased Number of Saved Views 30 Saved Views are now available. Installation/Technical

Compatible with Windows 8 Set Shortcut Location User Selection available to include shortcut on start menu or desktop. New Default Install Folder Default install folder changed to Program Files location as per

Windows advice. Crash Reporting Crash reporting option available to automatically send information by email if a

crash occurs. Maintenance

The precision and number of decimals for both link and node data and results can be modified for the profile plot

Increased number of Saved Views available to 30 Dialog Resources are reorganized to allow full text display

2D Results Properties Restrict Range option now accepts negative values Progress bar added for CAD loading and drawing Invisible triangles in LANDXML files are no longer imported 2D Water Level Lines vertices can now be edited more easily Initialization issue in SCS Hydrographs resolved GIS Objects can now be selected from multiple GIS layers Split conduit default node values updated so they are not duplicated from the upstream node by

default Updated Orifice dialog when Bottom Outlet is selected so that invalid combinations of variables are

not supported The fields of Other Losses and Pipe Extension Factor are only an echo of import from the HCSWMM

program. These fields are not active in the program. Printing options can now be accessed from Tools -> Application Settings to update the .ini file Progress bar added to loading of XYZ and ESRI Grid Files Long Section view resizes correctly after formatting a grid has occurred Added a notification upon importing of 1D/2D Connection polylines stating that line fusing or

snapping is not automatic and manual digitizing of the connection lines is recommended Link display arrows have been corrected to properly display when printed in plan view Previous view button remembers views from right-click pan movement Clicking column header in User Inflow Hydrograph no longer blocks data entry Improved error messages for values given outside the reasonable range in the Natural Section

Shape dialog 2D Water Elevation Maps support negative values Cleaned up unused variables removed from Conduit Data dialog Tidied up the border around the Quick Data View panel Added the TR-55 Time of Concentration calculation methods to the Tc Calculator option Dynamic Long Section view now includes an icon for an Orifice Increasing timestep now works for next and previous buttons Additional commands can be written at the Top or Bottom of the .tgc file via Advanced Parameters

in 2D Job Control New 2D Head-Flow Boundaries available. User can specify a surface slope or a Head-Flow Curve. Updated the description of the 30-75 Wingwall Flare FHWA Inlet type to correctly match what is

listed in the FHWA design manual GIS Export added to 2D Grid Extents layer. Exports Polygon, Grid Step Size and Angle of

Orientation. Import also now supports importing the above grid properties. Dynamic Replay of the HGL is now possible using time steps less than 1 second 2D results animation updates when moving animation slider as well as when using the forward and

backward buttons File specific fix received from support query Corrected the in-dialog display of the General Equation Rational Formula equation to correctly

match what is shown in Help file Comma and other special characters in Global Storm names are now allowed with an automatic

substitution of the character with an underscore such as 1,2 being replaced with a 1_2. This ensures a valid file name for model results. Box culvert width correctly displayed in Dynamic Section View

Fixed incorrect displaying of results on links with negative slopes The DXF export of filled nodes using Graphical Encoding is now supported MapInfo files when loaded to the GIS Layer take on the units of the XP project and no conversion of

coordinates is performed Updated unknown error message if it is caused by the 2D engine to direct user to the 2D

diagnostics file for a more helpful message

Elevation shapes using the option Adjustment to All Elevations uses the TIN elevation plus the adjustment and not simply the adjustment value if no Z value is present

New column added in XPTABLES to show 1D/2D Water Transfer Correct printing options re-enabled for Dynamic Section View and Dynamic Long Section Connection Lines no longer move when closing a file Only active items in multilinks are now displayed in xptables Thick option for ridge line topography item now enabled Added warning message to occur when Snyder Runoff method is attempted to be applied for a

sub-catchment with an impervious percentage other than 0 User Selection available to include shortcut on start menu or desktop Layer View inconsistencies solved Horizontal elliptical conduits changed to correctly calculate the minor axis value using the

hydraulic properties table The plot radio button has been disabled in the multilink definition dialogs All diversions and conduits can now be viewed in the Review Results graphs. Each item in the

multilink can be viewed by using the previous/next controls on the Review Results toolbar. Basin maximum infiltration rate parameter was added to the Review Results properties dialog. This

parameter is off by default. Spatial Reports Pump Results are now populated File specific fix for importing XPX file Profile Plot now accepts longer path names for DXF export Updated user warning message when Plot Output point graphs cannot be generated Initial water depth now correctly applied only to subsurface node when an inlet restriction is

specified Corrected export to LandXML issues Exporting Cross-Section results to Excel working when elevations are below zero Review Results options reinitialized whenever options changed to avoid freezing graph when an

empty data graph is shown Option to replace link names that are too long per link or with defaults when importing from GIS

file Fixed issue with Inlet Restrictions and User Defined Conduits Scenario and Global Storm combo boxes in the Toolstrip use a smaller font to reduce truncation of

long names Constant values corrected in Tc calculator for Friend's equation Interpolation issue at the boundary of 1D Flood Maps for contour export and smooth contours has

been corrected Animation slider now displays all timesteps instead of ignoring the last 4 timesteps Horizontal and Vertical Ellipse as well as Egg shaped conduits jump to a common help topic that

allows the selection of any op the three Water Quality results again display correctly in the Review Results graphs Fixed Gauaged Pollutant functionality to avoid incorrectly generating an error regarding the start

date Fixed solving for all 3 modes so it no longer generates an error The Natural Section dialog no longer shows arrows above the left, center and right length fields.

These values are strictly to compute the storage in the 3 sections based on the longitudinal length. DTM Builder now only shows valid file types when Read GIS File is selected 2D Inflow Capture and Inlet Capacity now give a warning if they are used together 1D Flood Map Results can now be viewed for multiple Global Storms Weir Input Data parameters now updating correctly from XPTABLES Interpolation issue at the boundary of 1D Flood Maps for contour export and smooth contours has

been corrected

Spelling corrected in error log for some messages Loading background images now supports .shp files Crash reporting option available to automatically send information by email if a crash occurs Gauged Pollutant Files now supports user defined formats Improvements to 2D Cross Section tool when elevations are displayed Cross Section dialog re-sizable again as per version 2011 Default install folder changed to Program Files location as per Windows advice Enhanced EPASWMM5 Reader to support user defined conduits This fix allows for nodes to be deleted (any connecting conduits as well) then import of new nodes

and links by xpx without any model corruption When converting from single to multilink all data including Conduit Factors is now passed to row 1

of the multilink Fixed some date issues with Gauged Data Dialog A database error will now be displayed if a user defined rainfall file is selected without a properly

defined file format User defined rainfall dialog now displays Gauged Rainfall title rather than a generic Gauged Inflow

title Vertices from the same Flow Constriction object cannot be welded to each other. Vertices can be

deleted to obtain the same net result.

VERSION 2012, SERVICE PACK 1 (v14.1) (Officially released December 3, 2012) Hydromodification. Added ability to convert every graph show cumulative probability and

percent exceeding option in Review Results. 64bit Engine. Increased capabilities for data handling and faster run times particularly for large 2D

models. To run, use the switch 32/64bit engine in Mode Properties from the Configuration menu. BOM Pluviograph Converter. New application added under Tools-Launch Application, to convert

the BOM (Bureau of Meteorology) format into a CSV format that is readable by xpswmm (Australia). 2D Analysis Enhancements. Redundant input data for running 2D models with global storms and

different scenarios are not exported anymore. This speeds up the data generation process. Improved 2D Export. Map and vector results export from water level lines to ESRI ASCII grid. Additional 2D Map Results. Added Bed Shear Stress and Stream Power added to the Map Results

Types 2D Flow Constrictions GIS Import/Export has been added to the 2D Model Layer - 2D Flow

Constrictions to allow 2D geometry to be imported and exported. Improved 2D Initial Water Level Settings. For models with multiple domains a 1D initial water

level is now set to match the 2D initial water level by default. This can reduce instabilities occurring in the model. Note, this only affects 1D nodes along the 2D/2D interface that are used to exchange water between each domain, not nodes and links in the model.

New TC Calculator. Supports new Malaysian IFD methods. More Robust Merging model function. Default Laurenson n value initialized. User no longer needs to open a form and click OK or view

the XP TABLES column when selecting the method. Please not that this may affect results if old models had not activated the n value.

Improved RTC Controls. Min and Max values now operate as target and original values respectively. Min value can now be larger than max value allowing for example a weir crest to raise when sensors are true.

1D Flood Maps. Integration of the 1D Flood Maps with the animation slider has been made more robust. 1D Flood Maps and 2D Water Depth Results can now be displayed synchronously with the

animation slider. Progress information have been added for the processing of 1D Flood Maps. 1D Floop Map algorithm was improved not to produce isolated flood extents.

Turn off Check Files in 2D Models. The 2D Job Control now provides the option to turn off producing check files as part of the 2D Model run. This can save time during 2D model runs.

Maintenance Temporal variation and user-defined rainfall file global database entries now export and import

correctly to and from XPX format. In addition, rainfall start time hour, minute and second values may now be set to 0 as expected in XP Tables.

Gauged data is now plotting correctly in Review Results Fixed spelling error in the Utilities menu Printing issues for multiple graphs in Review Results have been addressed Fixed crashing issue for simulation start dates before 1/1/1970 in runoff mode Merging model function has been made more robust Tool tip text changed from 'XP Table list' to 'XP Tables' An elevation check for user defined weirs has been added Error message added when runoff method is solved with a time of concentration (or peak) being

0.0 Pump of type 5 (static head at U/S instead of dynamic difference at U/S, D/S) now fixed Default Laurenson n value now initialized and used without user needing to open form and click

OK when selecting the method Fixed bug occuring in the water surface profile in cross sections RTC Min and Max values now operate as target and original values respectively. Min value can now

be larger than max value allowing for example a weir crest to raise when sensors are true. Subcatchment redirection has been made easier to use with fields only being enabled when they

are applicable with the current options Overwriting existing output files for Global Storms now produces a warning GIS Import/Export has been added to the 2D Model Layer - 2D Flow Constrictions to allow 2D

geometry to be imported and exported Fixed incorrect selected node references on Generate Ground Elevations form For modeling consistency purposes tide gates on outfalls now automatically activate the 'downhill

only' flag of the direct u/s conduit Fixed save graphics file issue that previously prevented moving or overwriting a saved file unless

the software was closed and reopened Selection of polygons in layers has been made more robust Weirs and orifice connected to nodes with inlet capacity turned on are now assigned appropriately

to either the surface or subsurface node based on the rectified computation of split elevations. If natural channels are present, the split elevation is the minimum over all adjacent natural channel

inverts Changed naming inconsistenct for Temporal Variations in XP Tables and Sewer Inputs dialog Vertical walls will now be applied correctly for natural channels that are truncated by defining a

depth in the Natural Section dialog A few fields in the RTC dialog have been changed from comboboxes to drop-down menus 2D Map Results Legend width has been reduced. This means titles now have a maximum of 16

characters however full names are listed in the Help File. 2D Simulation Summary includes missing viscosity coefficient values Problems occuring with the section profile tool when 1D Flood Maps were enabled have been

fixed A bug in the EpaSwmmReader (SWMM5) has been fixed when reading the [HYDROGRAPH] section.

The maximum number of temporal patterns has been set from 20 to 2000.

1D Flood Maps and 2D Water Depth Results can now be displayed synchronously with the animation slider

For models with multiple domains a 1D initial water level is now set to match the 2D inital water level by default. This can reduce instabilities occuring in the model. This only affects 1D nodes along the 2D/2D interface that are used to exchange water between each domain, not nodes and links in the model.

Node names for nodes with inlet restriction have been restricted to 8 characters A bug in writing groundwater result data to the output file has been fixed

2D Advanced Parameters are now written at the end of the .tcf file to prevent them being overwritten but other commands from xp2D

Inconsistencies for 2D Inflow Capture have been resolved. Local 2D Inflow Capture now overwrites global 2D Inflow Capture and local inflow capture is effective even when the global 2D Inflow capture is disabled.

Priorities for 2D Landuses have been fixed, the topmost Landuse in the layer control is now the one with the highest priority

Fixed error exporting 2D connection lines when 1D/2D Interface is set to type Flow Interface (SX), now runs without reporting an error

Inserted safety check if solve is tried with no active scenarios Basin optimization feature 'Limit d/s discharge' is now correctly setting the conduit parameters to

the designed values An error message will now be thrown for a 2D model in which no default Landuse Category is

defined XPTables Pump Run Time column is now populated correctly Progress information have been added for the processing of 1D Flood Maps Fixed view updating issue with the cut icon toolbar In some cases previously 2D results files were locked after running the 2D flood depth animation.

This no longer occurs. Printing issues with the dynamic section view and the dynamic long section view have been

addressed Removed a default command in 2D model setting. Now always the latest method for 2D/2D

interface lines will be used. Fixed error that occured for reading multiple catchment runoffs of the LA Hydrology method Problems with the Section Profile Tool have been fixed Stopped inappropriate error messages from popping up for incorrect file and path names that are

inactive in the Interface Files dialog 1D Floop Map algorithm was improved not to produce isolated flood extents. Integration of the 1D

Flood Maps with the animation slider has been made more robust. The 1D Flood Mapping algorithm was changed so that it will not produce isolated flood extents

anymore Inconsistencies with inactive layers in the 2D Model layer have been resolved

VERSION 2012 (V14) (July 1, 2012) xp2D Enhancements

2D Simulation Summary – Now available, reporting key information at a glance for quick quality assurance and control and regulatory agency reviews. Get pertinent model data in a single dialog with data and graphs of:

o Cumulative mass error o Flows in and out o Changes in volume

New 2D Map Result Types – Enhanced offering of 2D results available for display from the 2D Maps layer after simulation. Activate in Map Results Type section of 2D Job Control. Including:

o Selection of hazard categories o Bed shear stress o Stream power o Mass balance o Bathymetry o and more.

Support for 2D Infiltration Losses – Enhancements to direct rainfall include: o Green Ampt and Initial/Continuing Loss infiltration methods for 2D models o "Infiltration" now referred to as "Rainfall Abstraction" to provide a more accurate

description of its functionality o New "Infiltration" section added which links to the new "2D Soil Type" global database

entries. 2D Flow Constrictions – Include Bridges, Floating Decks and User Definable Layered flow

constrictions in the 2D Model. Specify energy loss coefficient and the percentage blockage above and below the deck or per layer.

Water Surface Profile - Addition of graphically depicted water surface elevation to DTM cross-section tool.

Depth Varying Roughness – Can now be specified as a curve for 2D landuse categories. Automatic conversion from existing two-point variable roughness data.

1D/2D Links - Interface lines may now be created in 1D/2D interface layers. Draw a polyline then double-click to select type as head (HX) or flow (SX). This means you can now have multiple 2D cells linked to a 1D node for flow.

2D Job Control – Improved calculation options. o Specify separate time intervals for map outputs, time series outputs and mass balance

outputs o Turn on or off additional mass balance correction iteration in 2D simulation.

2D Multiple Domains – Inactive/active area changes. o No longer permitted to solve with inactive area as the default area type. o Warning message now shown on solve when a 2D model with multiple domains contains

active area polygons, as active areas may otherwise enable parts of nested domains that are outside the grid extents.

o Appropriate grid extent polygons should be used to define domain extents. GIS Enhancements

Export to ESRI ASCII Grid - 2D map and vector results from water level lines are now exported to ASCII Grid file format.

New GIS Export – GIS export button added to XP Tables to export node and link tables. Displays new GIS export dialog with variable selections pre-filled from the XP Table. New dialog with variable selections are also available manually by right-clicking on the Nodes or Links layer and choosing Export to GIS.

"Weld Vertices" On/Off Option – Added to GIS import dialog for polygons and polylines. When this option is turned on, imported vertices are welded to any vertex existing in the same location. When it is turned off, a new vertex is added for every point imported, with the import process occurring much faster.

Modeling and Results Enhancements 1D Flood Maps – Display and animate 1D Flood Maps based on DTM data and water levels from

1D results. Spread can be adjusted by editing the Radius distance. Time Sensors for Real Time Controls – The following parameters are supported:

o Simulation time o Time of day

o Month o Weekday o Even/odd day

Conduit Design - Maximum number of barrels may now be specified for design, beyond which the number of barrels will not be increased when running design process.

Depth Varying Roughness – Can now be specified for natural channels. Cumulative Overflow Results – Additional graphed option for nodes in Review Results.

Additional Enhancements Server Installation - Installation now supported on Windows Server 2008 and Windows Server

2008 R2. Enhanced Text Editor - NotePad++ is now installed with the software for viewing results files.

Includes more features such as file compare options.

Maintenance Parallel conduits may now be imported as multi-links from EPA SWMM 5 (up to the limit of 7 conduits) Temporal variation and user-defined rainfall file global database entries now export and import

correctly to and from XPX format. In addition, rainfall start time hour, minute and second values may now be set to 0 as expected in XP Tables.

Gauged data now displays as expected in Review Results in both hydraulics and runoff modes when scenarios or global storms are active

Added error messages on solve when pollutants, pollutant concentrations, or gauged inflow file information are not specified with the corresponding options turned on

Elevation shape layers may now be exported in shapefile format. When this format is selected for export, a choice of either polygons or polylines must be made due to limitations of the format.

The Encroachment Station Option variable now shows the correct choices in XP Tables Installation is now supported on Windows Server 2008 and Windows Server 2008 R2 Fixed an issue where Insert and Delete buttons did not work as intended in the advanced section of

2D job control Fixed further bug in 2012 that occured when rectangular channel with sediment depth was

overtopping (with vertical walls) Corrected volume computation for stepwise linear storage basins. Introduced configuration

parameter STORAGE_LINEAR_DIM for backwards compatability. Fixed bug that did not take the minimum cover into account when the number of barrels had to be

increased Fixed computation error for normal depth computation and normal/critical depth for trapezoidal

channels Fixed an error that overestimated the entrance and exit losses for low flow values. If the flow area is

less than 0.00001 the loss values will automatically be set to 0.0. Fixed reading error in the Rainfall Utility for Standard Earth Info ASCII format Importing global database entries through XPX now removes all previous data before populating with

new data, to ensure it is completely overwritten Nodes specified as linking to 2D at invert or spill crest are no longer excluded from the 2D linkage

when they are attached to inactive 1D-2D connection lines Maximum 2D map and vector results from water level lines now display immediately upon pressing

the maximum button; they no longer fail to display when the result animation is not played before pressing the button

A unit conversion error when plotting velocity for time series output points has been corrected, and the unit label in metric models now shows as the expected m/s instead of m/hr

The following 2D model layer types were missing the Export to GIS option, and have had it added to their context menus: 2D / 2D interfaces, 1D / 2D interfaces, 1D / 2D connections, Head boundaries and Flow boundaries

Choosing to export all objects to GIS from a Fill Areas layer now exports all objects as expected, rather than only selected objects

ESRI ASCII grid files created by exporting from 2D Maps and 2D Vectors layers now output a real number instead of an integer for their no-data value, and as such should be identified by ArcGIS correctly as containing real number values instead of integers

Choosing to export selected objects only to GIS from an Elevation Shapes layer no longer exports all objects regardless of the selection

Bug fixed that occured when two consecutive areas in storage data table had the same value (caused division by zero)

Profile plot is no longer displaying erroneous data for WSPG models created in version 2011 SP1 or later

Design file is now written only for objects that are indeed designed. This could have caused issues for natural channels for which the specified depth differed from depth induced by the cross section.

An error in the formula for the Kinematic Wave method in the TC Calculator has been fixed Header information was overwritten if there was a restart in design mode (conduit/basin design). This

has been fixed. A links cross section is centered at the middle of U/S and D/S invert elevation of the link now. This is

for displaying 2D water level lines correctly. Fixed bug in the computation of outfall depth for the case of fixed backwater depth with a tidal gate Pollutants will no longer vanish with water evaporated from storage basins. Configuration parameter

'POLLUTANT_EVAP' has been added to restore the old behavior; specifying this will make all pollutants defined in the model evaporate.

Several interpolation errors have been fixed in exporting 2D Maps and 2D Vectors results to ESRI ASCII grid files. The exported results now much more closely match the results displayed in the interface.

The configuration filename no longer shows up blank in the License dialog XP Tables no longer unexpectedly adds rows when pasting more rows than exist in the table. In

addition, overall copy/paste logic has been refined to more closely resemble Microsoft Excel's behaviour.

Bad values for max. head + tailwater written to the .RES file for multilink staying dry Control properties are now disabled in the Real Time Control dialog when a sensor is selected, and

sensor properties are disabled when a control is selected, to clarify which properties are relevant for the current selection

Bug has been fixed in the interpolation between hydraulic and runoff time steps in simultaneous mode

The restricted range flag for 2D map properties now saves and loads correctly Minimum 2D map and vector results from water level lines are now tracked correctly. Previously,

values were assumed to be zero when the minimum time step was selected. A unit conversion error in the 2D Vectors (Flow) display for US Customary unit models has been

corrected Fixed output of wrong last data point in the InterfaceUtility for hydraulic and runoff results Fixed a crash when a cross section was drawn in water surface profile mode Fixed bug that occurred for surcharged weirs when there were several weirs (with different

dimensions) in the model Fixed a bug that caused 2D Maps to load very slowly for specific circumstances Fixed an issue that caused an "Unknown error" to be displayed when running a multi storm 2D model Fixed engine crash that occurred for malicious input data for stepwise storage data under a

configuration parameter that reads the depth table as elevations. Now an error message is written to the output file and the processing is stopped in a controlled manner

Redesign of 2D Water Surface on Cross Section.

VERSION 2011 (V13), SERVICE PACK 1a (January 2012) Maintenance Fixed a bug that was introduced with the 2011 SP1 change " Laurenson method has been modified to

take into account values of n other than the default of -0.285 as expected" The enforcement of a minimum of 1% transverse slope on natural channel cross section line segments is

now non-default. Configuration parameter CS_SMOOTH_ON may be used to apply the smoothing procedure and/or to produce V2011SP1 results.

VERSION 2011 (V13), SERVICE PACK 1 (DECEMBER 2011) Enhancements Added the WriteInterfaceFile.exe utility to the Tools -> Launch Application menu Maintenance View -> Network overview once again shows the network Diagnostic files are now loaded correctly after solving a 2D model with "Use Directories" ticked in 2D Job

Control -> Folder Options Fixed an intermittent bug where turning on background image layers would sometimes cause text

labels from other layers to disappear The GIS link tool no longer gives an error when trying to export data or results to a shape file database

where some fields are missing data Dynamic section view no longer crashes when opened for a multi-link with no active elements; an error

message is now reported Timestamp for 2D results once again displays as expected when turned on in the properties of the

Reporting -> Legends layer Subcatchment numbers now show as expected in XP Tables when multiple heading rows are used Texts layer now displays text at the correct size for US Customary unit models with a display size

specified in points Arch, horizontal ellipse and vertical ellipse conduit cross sections now display with the correct

dimensions in Dynamic Section Views for US Customary unit models Multi-link variables are now imported correctly from external databases in models with global storms

turned on Fixed a bug in the computation of surface area for surface nodes of a node with inlet restriction Weir Crest Elevation is now retained as expected in the Real Time Control dialog when the dialog is

closed and reopened Result values can now be seen independently in XP Tables and Quick Data View for structures in multi-

links where multiple structures are turned on in the same conduit line (1-7) Fixed some memory leaks that occurred when working with polyline and polygon tools 2D models with multiple domains may now have the simulation time step overridden for each domain

independently Fixed bug that occurred for sediment depth in rectangular conduits Context menu in main view now only appears when the right mouse button is released, rather than

when it is pressed. This permits easier panning in the view when large polygons such as 2D grid extents are selected.

The same diagnostic file may no longer be added multiple times in the layer control Laurenson method has been modified to take into account values of n other than the default of -0.285

as expected Corrected volume computation for stepwise linear storage basins. Introduced configuration parameter

STORAGE_LINEAR_DIM for backwards compatability. Fixed an indexing error in the evaporation utility

HGL is now updated correctly in the dynamic long section view when changing between different storms and scenarios

Configuration parameter MAXBARRELS is working now. Fixed bug in the design of rectangular conduits. Fixed a bug that made all storage basins in a model surcharge (and use default manhole area for depth

update) when only one basin surcharged Fixed computation of mean flow value in the statistics utility Interface no longer crashes when the number of entries in the dynamic elevation shape perimeter

elevation table does not match the number of vertices in the corresponding polygon; an error message is now provided in this case

Updated online help link XP Tables no longer crashes when a node contains more than 10 outgoing links; the limit has been

increased to the overall limit of 20 links connected to each node A minimum slope of 1% on natural channel cross section line segments is now enforced (the bottom

segment is exempt). Configuration parameter CS_SMOOTH_OFF may be used to skip the smoothing procedure and produce old results.

Fixed an error in the Zone 2, 120 min < 30 year AR&R temporal pattern: the 21st entry was changed from 1.2 to 0.012

BMP screen unit entries with unspecified residual flow fraction are now handled correctly on solve (fraction is treated as 0.0)

Fixed overestimation of critical upstream depth. Reverse flow calculations are more stable now. Fixed computation error for critical depth of overtopping natural channels Fixed issues relating to UH coordinates/convolution in Snyder method Updated all simulation engine licensing messages to refer to XCF license configuration files instead of

CNF, for consistency with the interface Added an error message on solve clarifying that activating both BMP and inlet capacity on the same

node is not supported 2D models with an inactive top-most grid extent layer can now be solved, provided at least one grid

extent layer below the top-most is active Fixed error in minimum flow area calculation. Overestimation of entrance/exit loss is fixed now. Added

configuration parameter NO_MIN_FLOWAREA to restore pre-2011 SP1 behavior. Fixed two issues with user defined weirs: (1) no reverse flow possible, and (2) wrong area contribution to

incident nodes Error messages are now provided on solve if any two conduit or structure names are identical within a

single multi-link Interface no longer crashes when very small polygons are created by snapping a third vertex to the

second vertex An error message is now given on solve if any degenerate polygons with zero area exist in a 2D model Infinite time of concentration no longer results from specifying a 0% impervious value for rational

formula hydrology using the Bransby Williams TC method Polylines are now ignored when importing from GIS into polygon-only layers, and vice versa; this speeds

up import from large GIS files containing both polylines and polygons Resolved an ambiguity that caused the SCS runoff method to use a different curve number depending

on whether runoff only or runoff+hydraulics was solved Interface now waits for eight seconds - up from three seconds - to allow simulation engine to start Infiltration global database reference is once again disabled as intended when SCS hydrology is selected

in the sub-catchment dialog X Pos field (for node imports) and US Node field (for link imports) are now disabled as expected when

Update Existing Objects Only is chosen on an external database import CPU usage no longer runs at 100% on certain dialogs or when editing label text in the main view Error in pollutant removal function for HDR screening units has been fixed Sorting by name in XP Tables now works as expected, even when names appear similar to numbers or

dates

Checks for rainfall reference names on solve are now fully case insensitive as intended, to avoid problems solving certain older models

CAD files containing block references with non-zero offsets no longer draw the block references in the wrong location

Errors are no longer given when adding new layers to models with a large number of existing layers. Lock status should no longer be confused with visibility for certain layers.

A bug has been fixed that occurred when using Hec-22 combination inlet gutters Water quality unit issue in output file has been fixed Error in storage node data import from SWMM5 has been fixed XP Viewer no longer crashes with models containing CAD files 2D landuse initial and continuing loss units are now handled correctly as inches and inches/hour,

respectively, in US Customary unit models License expiry dates in December no longer show incorrectly as January in the XP Diagnostic tool VERSION 2011 (v13), (JUNE 2011) Enhancements Snapping to vertices in GIS file layers is now possible 2D grid cell generation has been optimized to use a much lower amount of memory and allow much

more rapid alteration of the grid extent polygon and cell properties Multiple 2D domains are now supported as an additional licensed module. Cell size can be varied in

each domain. Multiple domains can be linked by 2D / 2D interface lines. 2D grid orientation may now be altered independently of the grid extent polygon. The grid rectangle

retains its orientation after any modification to the polygon. A right-click menu option has been added to the polygon, to update the grid orientation to best fit the polygon.

Added 2D job control option "Always use double-precision solver" Basin optimization features revised and extended. Four options are now available: Resize d/s pipes, limit

d/s surcharge, resize d/s pipes and basin, and resize basin. CAD file import is now supported for .DWG and .DXF files up to AutoCAD 2011 Dual Drainage Batch Converter added to Tools menu. This tool automatically converts any selected links

from single to multi-link and sets overland flow paths along with existing pipes. A calculator for Time of Concentration / Time to Peak has been added and linked to the Unit

Hydrograph and SCS Hydrology runoff method dialogs. Nine calculation methods are available: Friend's equation, modified Friend formula, kinematic wave, Alameda, Izzard, Kerby, Kirpich, Federal Aviation Authority, and Bransby Williams.

2D time series output points now show velocity and velocity angle in addition to head 2D grid cell display is now limited to those grid cells whose centers lie inside the grid extent polygon

(those that are made active by the polygon, if Active Area is selected as the default in 2D job control). Grid extent polygons may now be imported from GIS files. Velocity and flow magnitudes may now be exported to an ESRI grid file by right-clicking on the 2D

Vectors layer and choosing Export Results Grid cell size may now be specified directly when exporting 2D results to an ESRI grid file Mappings can now be made between GIS data and node and link fields when importing into node and

link layers from GIS files Holding down Shift while clicking Select All Objects (either nodes or links) now selects only nodes or

links that are active in the current mode Maintenance "About" menu items in some views renamed to make consistent with main view View is no longer lost after importing from XPX or external database

Unused Impervious C field removed from Rational Formula job control settings dialog (Impervious C should be set in global database entries)

New models now have Active Area as the default area type in 2D job control settings (existing models keep their original setting). Cells outside the polygon defining the grid extent are always inactive, and cells inside the polygon are either active or inactive depending on this setting.

Waste stream temperature reference is now taken from the correct place for RNF (node and subcatchment), SAN and HDR modes; error message should no longer appear on solve when data is present

Distribution of 2D map and vector results is again displayed in the corresponding properties dialogs Retry option added on all failed licensing checks during simulations) A bug has been fixed that occurred when negative elevations were involved in the computation of

conduit surface areas. River_siteUS.bpw was missing from the "Work\15 - DTM and River"; this has been added to the installer EPASWMMReader utility now correctly handles "*" entries as zero OFFSET if LINK_OFFSETS = ELEVATION

in EPA SWMM5 .INP files Grid extent layers may now be moved up and down from the right-click menu, to allow ordering of

multiple domains. A domain takes precedence over all domains above it in the list, where there are overlaps in extent polygons (i.e. the bottom-most layer is the overriding one).

Remote desktop sessions are now supported in network license mode (standalone mode still disallows remote desktop sessions)

Updated LA code to fix developed runoff calculation is now optional through LA_Q_FIX config parameter. Default is now similar to PreV9.5.

Traversal of grid extent polygons while holding Control or Shift is now possible when creating polylines or polygons in other layers

Default 2D vector result display properties have been changed: fixed 10mm length shafts with arrowheads of length 3mm and width 2mm

Rainfall areas, flow areas and 2D/2D interfaces are now taken into account as expected in generating 2D boundary condition files

Integrated updated version of Tuflow (XP2D Module) in simulation engine (2010-10-AB-w32) Error message is now printed in OUT file if multiple outlet links exist and HDR interface file is to be

generated 2D diagnostic files are now sorted by filename, to avoid reordering of the files after each simulation Field description in Weir dialog changed to "Crown or Top of Weir" for clarity User-defined conduits now export correctly to XPX Missing support files for Getting Started Manual Tutorial 9 have been added to the installer, and the files

for Tutorial 14 have been updated Conduit profile data is now copied between the first multi-link conduit and the single link conduit when

converting back and forth between single and multi-link Degenerate "flat" polygons (zero area) now export to MID/MIF with a appropriate centroid position

instead of "-1.#J -1.#J" Input dimensions DEEP and AFULL on the rectangular round bottom special conduit dialog were

reversed; these have been switched around Field descriptions for F_R_SUB_RRAINFL and F_R_SUB_RTOTRAIN have been corrected (Catchment

Total Rainfall Depth and Catchment Rainfall Intensity, respectively) Added tooltips to the CAD layer list to allow long layer names to be seen in full Corrected labels in Unit Hydrograph runoff method dialog: "Time to Peak" => "Time of Concentration"

for Santa Barbara, and "Time of Concentration" => "Time to Peak" for Nash The Edit Data dialog for rainfall / flow areas will no longer select an incorrect rainfall global database

entry if its name shares a prefix with the saved entry "Result line (xxxx) is not completely inside a domain" warnings will no longer incorrectly appear for

result lines that are completely within a single domain Tools->Calculate Conduit->Cross Sections now correctly aligns cross sections when using the Layout

From Shape option with a non-zero percentage offset from U/S or D/S node

Right-click->Export from a Review Results graph fixed when browsing to a file on Windows 7 machines Changed exponent in the Federal Aviation Authority time of concentration formula from 0.33 to 1/3 Description of field AFULL has changed from Special Conduit Height to Height of Rectangle, and its

units are now in feet / meters Configuration parameter TC_NO_RESTRICTION added to allow rational formula time of concentration

values below 5 minutes. By default minimum TC = 5 minutes. Opening a .XP file from a UNC network path (e.g. \\computer-name\folder\file.xp) is fixed Whitespace at the end of a line is no longer incorrectly treated as an S value when creating a DTM from

an XYZS file Maximum & minimum 2D flow results are no longer displayed in the interface. Previous versions used to

show max / min flow corresponding to max water elevation, which may not be very meaningful. Validation has been changed for the DEEP field to avoid data entry conflicts in its usage as diameter for

most conduit types and max depth for natural channels. Warnings and errors have been removed for this field from dialogs and XP Tables; instead, warning and error ranges are now checked on solve.

X-axis label on time series graphs now changes according to time scale to indicate the correct time units (Hrs:Min or Hrs:Min:Sec)

Spatial report and graphical encoding variable descriptions for [RNF] Total Surface Runoff, [HDR] EGL Relative to Ground and [RNF] Surface Evaporation were mixed up; this has been corrected

Warning messages now appear at the start of simulation for any invalid configuration parameters that were specified

Flow direction field (F_NKLASSc) is now imported correctly from XPX Point on line query logic (used for object selection and export) has been revised to allow points that are

within a distance beyond line segment endpoints, and now executes significantly faster A bug that occurred for RDII with depression storage when the runoff time step did not match the

rainfall time step has been fixed Display order of multiple DTMs is now consistent with the order used for obtaining elevations (DTM

layers are now drawn over the top of those below them in the layer list) Display order of layers of the same type (e.g. grid extents, 2D active areas, legends) has been made

consistent with DTM layers (layers are drawn over the top of those below them in the layer list) Fixed an issue where some layers were being drawn more than once per screen update, causing the

screen to update more slowly than necessary Grid extent layers now refresh correctly in the layer tree after their order is changed 2D boundary condition polylines (1D / 2D interfaces, 2D head bounadries and 2D flow boundaries) are

now only active in simulation if they are completely contained within a grid extent polygon. Error messages are given on solve if any are partially inside and partially outside, and warning messages are given if any are completely outside all active grid extents.

Choosing "Delete Selected Polygon" from the right-click menu of a grid extent polygon now asks for confirmation before deleting the polygon

Removed Cancel button from many Yes/No/Cancel prompts where it had no additional effect to clicking No. Clicking No in these cases will still stop the action from being performed.

Font sizes in display units in US unit jobs will no longer display at a size much larger than specified Fixed a 2D issue where a 10m ridge would form along cells in row 0 and column 0 of the grid extents VERSION 2010 (V12), SERVICE PACK 3 (MARCH 2011) Enhancements 12D ASCII files can now be loaded completely by right-clicking on the DTM layer (including DTMs with

concavities/gaps) The runoff node sub-catchment dialog now includes UK Hydrology methods: Variable PR, Wallingford

Procedure, Revitalised FSR/FEH (ReFH), Flood Estimation Handbook (FEH) and Flood Studies Report (FSR).

Maintenance File->Revert no longer duplicates background images An error message is now given when time of concentration is non-positive for Rational Formula or Time-

Area Method Surface area calculation and/or relaxation technique has been updated for storage basins (use

"BASIN_RELAX_PRE10" for backward compatibility) Importing catchments from GIS now handles mapping of fields to subcatchments other than the first An error message is now given when non-zero sediment depth is specified for a natural channel Save As now correctly saves all changes to the new Froude Number calculation for reverse flow has been corrected The dialog will no longer appear multiple times after double-clicking or choosing Edit Data more than

once for the same node or link Fixed issue: hydraulics would not solve after sanitary in certain cases with a sanitary load specified Print error in output file for RNF Pollutant/Landuse (BMP) has been fixed SUBCATCHMENT_RES parameter is now default to see individual subcatchment results in XP Table An alert is now given when boundary condition time-series data is missing for a 2D simulation Fixed a problem where nodes occasionally did not move correctly when a group of nodes and links are

dragged together A warning is now given after XPX import when a catchment is specified for a non-existent node Volume/area vs. depth printing error for a storage node been fixed Fixed issue: disallowed snapping 1D/2D connection lines to 1D/2D interface lines under certain cond Flythrough path layers have been removed, as the 3D view and paths are no longer functional Time series output interval for 2D simulations is now set to match the map output interval Trigger / Shape Connections layers now save their visibility and locked status as expected Error relating to tracking of minimum velocity has been fixed Snyder Alameda (unit hydrograph) RNF method has been revised to match the result with HEC-HMS Loading projection from MIF file on GIS import now functions as expected HEC-22 Gutter spread calculation error has been fixed The title of the Vertical Ellipse special conduit dialog now says "Vertical Ellipse" as expected, instead of

"Horizontal Ellipse" Fixed a sorting issue in the pull-down box in plot output graphs, which was sometimes causing the

wrong graphs to be matched to plot output items All required user rating curves are now exported correctly for simulation, and the program no longer

hangs while exporting them Generate Cross-Section and CatchmentSim Export dialogs have been neatened up to display correctly

at 96 DPI Fixed a crash that occurred on Tools->Calibrate Model when a long file name was present The Properties menu item is now disabled in the Reporting->Legends layer's right-click menu when no

valid 2D results are present The simulation engine no longer reads unnecessary sections from the SWMXP.INI file (solved runtime

display error) Files are now added to the Recent Files list immediately on Save As Subcatchment numbers should once again display correctly in XP Tables The correct Edit Data dialog will now be shown for elevation shape and dynamic elevation shape

polylines and polygons, regardless of which layer is currently selected Indexing error in SCS calculation has been fixed which used to produce erroneous results for 2nd

subcatchment Concavities / gaps in 12D TINs (through triangles marked as being outside the TIN) are now respected in

conversion to XPTIN Importing polyline links from GIS more than once now functions correctly (polylines were being applied

to the wrong links on second and subsequent imports)

An error message is now given when the read and create hydraulics interface file names are identical Fixed an error in the computation of outfall depth with fixed backwater where an incident internal

rating curve is present Tooltip ordering of variable name and units has been made consistent (some dialogs were incorrectly

stating the units before the variable name) TC == 0 warning no longer appears incorrectly on selecting constant TC method for pervious but not for

impervious, and vice versa VERSION 2010 (v12), SERVICE PACK 2 (NOVEMBER 2010) Enhancements Node and link description variables have been added to XP Tables Reverse direction now works on a multiple link selection DTM triangulation engine has been replaced, and triangulation speed has been improved significantly.

Existing DTMs will be automatically converted from the old format (.tin.0, ..., .tin.9) to the new format (.xptin). Existing triangulations that are converted will retain the same set of triangles, i.e. they will not be retriangulated unless the user explicitly recreates them from source data.

Maintenance Quantity and quality result summary in .OUT file should now be reported correctly in all cases Results should now be computed correctly for models that contain particular combinations of user-

defined conduits, inlet-capacity nodes and multiple global storms Improved handling of result reporting for nodes with names longer than 10 characters Horton infiltration decay rate now converts correctly between 1/s and 1/hr units when importing from

and exporting to EPA SWMM5 Saved views from a previously opened model will no longer show up in a subsequent new model Fixed incorrect numerical rounding in XP Tables when precision is increased in the Variable Format

dialog Max tailwater, max headwater, and max velocity times depth now show correctly in XP Tables when

global storms are active Maximum flow and velocity in XP Tables now report the highest absolute values as originally intended,

and the minimum flow and velocity report the value closest to zero Node inverts, ground elevations and link lengths now import correctly from LandXML files An error message has been added to indicate when the area for an orifice is missing A warning message has been added when runoff redirection and BMP are both active Multiple rain gauges in one rain interface file are now handled correctly Allowed zero areas to be set for landuse in Water Quality dialog Fixed unit conversions on node, link and label display sizes for US Customary models Engine no longer hangs when effective RDII rainfall time period does not match simulation time period Quick Data View now switches between Node, Link and GIS tabs as expected based on the current

selection XP Tables variable names have been altered for some rational formula hydrology fields to distinguish

between pervious and impervious values Default interface file names are now populated on solve if none have been specified Importing from GIS files into elevation shape layers now handles polylines in addition to polygons Fixed a numerical error that resulted in zero flow when the slotted drain under the HEC-22 option was

used Results from EPA SWMM5 can now be reviewed as expected for pumps and weirs CSV files containing XYZS data (e.g. from 2D result map output) can now be read into DTM Builder Fixed some layout issues in the Rational Formula Hydrology dialog

Pump, weir, orifice and special conduit names are now restricted to 10 characters as required by the database

Fixed an error in overland flow velocity reporting for rational formula hydrology with Alameda TC method (it was off by a factor of 100)

Rational Formula Hydrology dialog now has an additional field "Overland Flow Velocity" for the Alameda TC method, to distinguish between flow velocity and flow path slope

Large XYZS files loaded from the DTM layer right-click menu are now read in much more quickly Creating a DTM from an XYZS file through the DTM layer right-click menu now takes breaklines into

account (previously, DTM Builder had to be used) "User Defined Rainfall File" option for rainfall global database records will no longer be incorrectly

unticked after exiting the User File Selection dialog An error message now appears on solve if subcatchment slopes are less than or equal to zero using

rational formula hydrology with kinematic wave TC method Added a check for outgoing links when exporting outlet nodes to EPA SWMM5 Fixed some object counts in the layer control that were not being refreshed on content deletion DTM no longer removes text after the "." in the output filename, unless it is the .xptin extension Memory usage and speed of exporting DTMs to 12D ASCII has been improved Fixed an issue in Sacramento Runoff Job Control with multiple scenarios where an unwanted character

was sometimes added to the date fields Snyder and Snyder Alameda unit hydrograph routing methods now behave like Clark method (same as

HEC-HMS) Fixed an error in volume calculation of a storage node if input data has decrement in surface area The correct conduit depth is now used when left at the default value of 0.05 Corrected an error in managing multiple grid extent layers that in some cases caused the wrong layers

to show after deleting one of them and reopening the model Fixed an error where the calculation of B for the Laurenson runoff method always used the roughness

for the pervious part of a subcatchment even when the subcatchment was fully impervious Added a missing backslash in constructing 2D output file paths with Use Directories ticked Variable time interval rainfall now graphs correctly when intensity values are entered instead of depths Holes no longer appear in DTM fill with Restrict Display Range unticked when very large magnitude

elevations are present VERSION 2010 (v12), SERVICE PACK 1 (AUGUST 2010) Enhancements Link Offset as Elevation (new EPA option) is now supported in the EPA SWMM5 reader Maintenance Dynamic cross section view now shows correct heights for arch, vertical ellipse, horizontal ellipse and

modified basket handle conduit types Ruler window no longer shows in top-left corner of screen before being moved to top-right HEC22 gutter depression metric unit (m --> mm) has been corrected Fixed incorrect ordering when reporting special conduit parameters R_TC is now exported to XPX for all hydrology methods Gauged data now shows as expected with scenarios active in Review Results Inlet rating curves are now only exported if they are used somewhere in the model Fixed an occasional crash when exiting the graphical encoding legend dialog CHANGES.TXT file should now show correct formatting when viewed from the web Node names are now shown in full on the Conduit Profile dialog, and the link name is shown in the title

bar

User inflow hydrograph flag import from EPA SWMM5 is now exported correctly, and node limits have been increased

Corrected interface exporting of rational formula data that caused engine to freeze Rational formula: Added blocker to prevent runoff pattern from being repeated for long sim times Deleting objects from the right-click menu now asks for confirmation A horizontal scroll bar now appears when necessary to view long file paths in the Background Images

dialog Corrected data file reading routines that ignored last entry of a line in various cases when the

simultaneous flag was enabled Tooltip and status bar message added for the Point tool Fixed an issue with rational formula routing when the simultaneous flag is on Simulation no longer hangs in RDII method when simulation time exceeds rainfall time Producing correct values with Clark method when the simultaneous flag is on Added safety check when the first area of a storage table is given as 0.0 (was causing a faulty table

computation) Version information in Help->Check for Updates now requests a refreshed version, to avoid old

information by caching Dynamic long section no longer crashes when node or link table options button is pressed with invisible

node or link table Line colours in profile plot now match those in the legend Time to reach final elevation for dynamic elevation shapes now has a minimum of 0.01 hr Water quality routing problem with negative flow has been fixed Fixed a problem with the simultaneous flag for the Sacramento County method A bug that occurred for a special setting of user-defined conduits has been fixed Fixed an erroneous "file not found" message that occasionally occurred when plot output line

hydrographs were viewed with two models open simultaneously Fixed an issue causing negative flow in the Clark method with evaporation active Natural channel cross sections imported from EPA SWMM5 are now correctly attached to links

VERSION 2010 (V12) (JUNE 2010) Enhancements LA WSPG procedure implemented Dynamic Long Section Views Enhanced (Supports dual drainage, embedded xptables) 2D Scenario management now supported with active/inactive layer management 2D Dynamic Elevations implemented (Dam Break, Fence collapse) 2D Elevation shapes added for additional terrain manipulation 2D Initial Water level boundaries supported (ponds, lakes) 2D results files can be directly loaded and viewed New Intel Engine - improved speed efficiencies Contour labels now displayed for DTMs Increase allowable number of pump curves (user configuration:PUMP_CURVE_POINT) Catchment Redirection - directly to node without runoff routing (additional checks implemented) RDII method for continuous modeling is now supported (support for Interface files) RTK parameter sets are now unlimited from a previous max of 5 global database records. The number of

patterns is controlled through a config parameter RDII_PAT=X RTK can now be applied to continuous simulations using a rain interface file. Maintenance Modify Elevation now works correctly for all cases when setting to lowest link invert Evaporation from the Depression Storage for Uniform loss method now incorporated

Reporting error in Table R5 & R9 has been fixed More than 5 RDII patterns are now allowed by using “RDII_PAT=” configuration parameter 2D Plot output graphs dates now correctly displayed Modify invert elevations corrected when setting to lowest connected link invert regardless of value Storm names now checked for invalid characters Error in graphic display of Pollutant Load/Concentration/Cumulative has been fixed for RNF/SAN/HDR

modes XP Viewer installation issues (installing DirectX) resolved Additional output precision added for 2D flood depths Changes in Volume of water in 2D domain now can be monitored in simulation runtime window Flood results for open channel left, main, right channel flow, velocity now reported User Defined Rainfall file now reads first non zero value Default 2D folder structures changed and not created for 1D only models Added tolerance for check on lowest cell elevation along 1D/2D Interface Pollutant Routing Method (CSTR) in HDR has been updated (configuration parameter gives

WQ_PRE2009 backward compatibility) User-defined conduit data now consistently saved in XP Tables for all cases LandXML version information correctly exported Egg-Shape conduit now plotted correctly DTM legend restricted range colour display fixed Node renaming correctly verified when editing in XP Tables Handle max iterations input correctly when data is outside of valid range Display of Cross section left/right banks on layout updated immediately after data changes Dynamic Plan View now displays base scenario results when multiple scenarios exist New 2D Intel engine (2009-07-AE) has been incorporated Support Interface rainfall data and user-defined rainfall in one model Kinematic Wave RNF routing error has been fixed Fixed initial buildup shown for this model with dry days greater than zero Inlet Type data now exports only relevant data for computation Handle missing/corrupt 2D results files (Check and process appropriately) Bug in orifice coefficient changes with time has been fixed Fixed invalid high continuity error reported with catchment redirection and evaporation Review results now display first time step results in Runoff layer Fixed computation for Alameda runoff coefficient for Rational Formula Rational formulae method now uses correct runoff coefficient for FAA Horizontal Ellipse now rounds up to next pipe denomination (upsizing) Arch pipe now rounds up correctly (upsizing) Allow double click on polymesh element (e.g. elevation shapes etc) to edit data RDII results now corrected when rainfall stops before simulation end time RTC multilink objects now exported correctly (fixes RTC dialog issues with case 659) Tabbed dialogs now drawn with correct colours DTM properties dialog reconfigured for easier display/edit Added View log messages from loading 2D results to Reporting layer right-click menu Correctly pick the 2D maximum/minimum results for all cases Initialization error in Clark Method calculation has been fixed VERSION 2009, SERVICE PACK 3 (11.3) (DECEMBER 2009) Enhancements New menu item, View->Go to..., has been added. Allows centering the view on specified (X, Y) coord. 2D job control settings now accessible by right-clicking the 2D Domain layer & choosing 2D Job Ctrl. Network locks now identify the client machine by MAC address

Dongles are now enumerated correctly when multiple XP dongles are connected to a network server Maintenance Fixed erroneous export of initial abstraction fraction in some cases using the SCS method Pipe diameters can now be converted between mm and m units in XP Tables and when importing Initialization issues in Green-Ampt infiltration method have been fixed EPA SWMM5 import utility has been updated Curve legends showing maximum values now always appear, even with only one storm or scenario Table R3 in output file has been updated A bug in initial abstraction calculation in the SCS runoff method has been fixed New link labels no longer overlap with old labels when a conduit is split Invalid last point in RNF review result graphs has been fixed Fixed an error exporting 2D results to shape files Print preview now stable when no printers are installed When dongle has been removed, user can now insert dongle and retry Review results now shows the correct cumulative load data for metric models (kg not grams) Welcome dialog selects newest recently used file by default instead of oldest Fixed a crash while editing water level line vertices Loading shape files or generating interface file names with long paths now stable. Individual lines are now imported correctly from MID/MIF files Value range for 2D inflow capture coefficient has been changed to (0.5, 100) Flood results on 2D maps are now shown to 3 decimal places 2D grid limited to square cells (vertical and horizontal sizes have been merged into a single size) Network dongle license can no longer be obtained by other users while a model is being solved XP Tables now shows all nodes and links when several disconnected networks are present Default coordinate system changed to NONEARTH for GIS file export Multiple views can now be saved and restored without corrupting the selected object set HDR water quality calculation: Config parameter WQ_PRE09 added for backward compatibility Restricted display range is now used for DTM legends when turned on, instead of entire DTM elevation

range Links with vertices will now show on the display when the endpoints aren’t visible Overlapping DTMs with different display styles (filled/contoured) no longer affect each others display Minimum and maximum elevation values are now always included on DTM legends Model extents are now automatically updated when a new polygon or polyline is added DTM fill is no longer executed when only contours are displayed 2D map results should now print correctly using the default PRINTDIRECT=0 Node names are truncated to 10 characters when a node is renamed by double-clicking its label, to

avoid corruption of .xp files Application no longer crashes on numerical errors when pipe design is turned on Clicking Retry after the dongle license is lost will now successfully reconnect with the network server Deleting a DTM when the properties of another DTM are subsequently changed now stable. Blank space no longer shows around the edges of a DTM that is overlaid on another DTM Application no longer crashes attempting to review runoff results when results have not been saved Fixed a bug where ID errors were shown in some situations after deleting a node Tools->Export To AutoCAD now creates the .DXF file in the correct folder The number of elevations shown on DTM legends is now limited to avoid exceeding the display VERSION 2009, SERVICE PACK 2 (11.2) (OCTOBER 2009) Maintenance DTMs now have a separate layer for legends (and no longer get drawn over by other layers)

ESRI grid export of 2D results now works for angled grids JPEG world files with extensions .JGW, .JPEGW, & BMP world files with extension .BPW, are now read Using PUMP3_MAXQ parameter will now allow max flow rate through dynamic head pump (type3) at

zero or negative head difference (d/s-u/s) SCS (Curve 484 & 256) unit hydrograph dimensionless ordinates have been updated Fixed some issues where only part of the network was displayed in dynamic plan view Review results now shows the correct concentration and cumulative load regardless of the units used Removed old third-party image libraries that were causing xpswmm to fail to load on some machines VERSION 2009, SERVICE PACK 1 (11.1) (JUNE 2009) Enhancements Build date is now shown in “about” dialog and “check for updates” dialog Maintenance Split link now makes two links with the same visual properties as the original link Fixed hanging problem in the simulation engine when using a network lock Added missing .drx files to installation (caused failure to load some CAD drawings) Print preview no longer crashes when no printer drivers are present Fixed 2D results (elevation) display for water level lines TuFlow results files greater than 2GB now load successfully Text objects in GIS layer are now selectable Fixed graphical encoding issues (now always displaying when layer is turned on, menu item reenabled

and can change settings when turned off) .xp files converted from an older version and saved as the latest version will now be backed up as

<filename>_v<old version>.xp (and corresponding .mdb) Link labels no longer disappear when a multi-link is converted to a single link and back again Plan view, long section and dynamic section views now use correct results file when multiple scenarios

and storms are present Fixed an occasional crash when status bar progress control was being updated Fixed an application startup crash on machines with DEP disabled Water quality results are now plotted correctly with global and local storms Crash no longer occurs when loading GIS files containing LINE sections DTM can now be created from XYZS files delimited by tabs Fixed an issue opening 2D inflow capture dialog Now opening correct 2D results files for plot output points and lines when "Use Directories" is ticked in

2D Job Control settings Layer control now updates correctly when plot output points or lines are added, and no longer crashes

on right-clicking plot output layers Fixed a crash in quick data view settings Merging with new version files now works as expected Inlet edge design text corrected to say Conc for concrete items Now displaying an error message when sediment depth is greater than conduit diameter or height Fixed a problem adjusting levels with 2D cell checks Now exporting 2D results contours to GIS files correctly, completion message updated to indicate

correct export file type Fixed a bug with licensing code that was causing only the first dongle on a network server to be found Demo, evaluation and starter pack versions can now solve 2D jobs of under 10000 cells without getting

an error message Fixed a crash on solve using Sacramento hydrology method Job control dialog titles have been changed to be more informative

Pipe design diameter is now updated correctly for multiple scenarios EPA SWMM5 import utility engine has been updated Max depth selection for Arch Conduit has been fixed Fixed SCS (Curve 484) unit hydrograph dimensionless ordinates HDR BMP calculation has been updated (fixed) ECW support libraries are now only loaded when required (some DLL dependencies of the libraries were

causing xpswmm to fail to load on some machines) Natural channel shape global database now handles imports correctly Volume vs Storage calculation at storage node has been updated Pump's off/on reporting in Table E17 has been updated Default evaporation for SCS method now ignored using SCS_NOEVAP param. (pre-v10.62 approach) 2D check files are now created in the correct folder with the correct prefix Fixed a crash when a node is deleted with the mouse cursor on top of its label Fixed a crash when creating AVI animations 1D depth calculation has been updated at 1D/2D "linked to invert" culvert inlet/outlet SX points Tools->Utilities can now be executed successfully when using a network dongle Simulation engine can now display cell counts of more than 5 digits (up to 8) Fixed a problem with dynamic section view when negative elevations were present The old approach (pre-2005) to calculate the flow through a surcharged weir can be adopted using

WEIR_PRE05 parameter Various updates made to graphics code: smoother lines drawn in network view Polygon / polyline handling rewritten to reduce memory leak, improve strength of vertex operations Invisible DTM layers no longer contribute to the displayed terrain where multiple DTMs are present Split conduit now splits at the correct position (was getting downstream and upstream nodes mixed) Fixed a crash when importing an XPX file specifying a non-existent node attached to a catchment Double-clicking on a breakline will no longer bring up the Edit Data dialog twice Double-clicking to create a polygon while holding Ctrl now works Closest vertex to mouse will now be used when dragging polygon or polyline vertices Selected polygon or polyline will no longer change after a vertex drag Selection highlight will no longer change to black after selecting some polygons 2D grid extents are calculated for rotated grids; grid displays when horizontal/vertical cell sizes differ HDR Water Quality Pollutant routing (CSTR) has been updated Fixed an issue with US Customary unit jobs where the scale was displayed incorrectly VERSION 2009 (1100) (MARCH 2009) Enhancements SWMM 5 Engine supported, including review of SWMM5 results Added support for importing CAD layers into selected XP model layers Improved 2D results map and contour display Color and style now user definable and saved for review results Layer Control View simplified and improved Background Graphics revamped, increased draw speed, improved picture quality Allow multiple networks to be analysed in Hydrology layer simultaneously Worst Storm - Now displays worst storm result in Spatial reports/Graphical Encoding & XP Tables Basin Optimization Added Rainfall on 2D Grid (including IL/CL), double precision computation added Layer Control View simplified Allow export of network objectsto GIS files Added icon on toolbar for Zoom Previous Link labels - allow opacity and modification of location

2D Inflow Capture Option Added Selection info now available from menu to look at model/layer Allow the user to set the next counter for the default node/link names Added support for 2D variable roughness based on depth Shape Export Updated AutoCAD background images handler 2D Check files now viewed correctly for imperial unit models Importing of LandXML (e.g. Data from Civil 3D, Arc Hydro databases) 2D Analysis updated Handle invalid 2D extent data when opening models Maintenance Scenarios and multiple storm analysis now output named results files DTM display range restriction fixed Various EPA 5 export issues fixed 2D Hazard maps now directly read from result files to give correct maximums Fixed Links selectability when selection flag off, layer control share selection/visibilty flag Ridge lines data correctly imported Allow the deletion of 3D Path lines for viewing network in 3D Continuity Error with catchment redirection fixed Spatial reports - Display on selected objects now updates correctly Dynamic zoom (mouse wheel) improved Fixed grid setting Dynamic Section View - check valid data Update results contours on water level lines after solve Support results of smooth contours on water level lines Long filenames (256 chars) now allowed Ruler tool now always displays area as positive 2D analysis now possible with multistorm and 1D scenario changes Inlet Capacity dialog redesigned to correctly display options Additional checks on Storage data for checking invalid data Conduit Profile on multilink from Right click on now displays correct conduit Quick Data View settings now saved Water level lines improved for editing and automated generation Various memory and resource allocations improved CAD file with rotation now supported XP tables order now maintained correctly Zooming in Dynnamic Plan view improved Link Label context (in Layer control) options now appear correctly Various Dialog alignments fixed Spatial Report formating error fixed Display the min/max values of 2D results contours When using restricted range on 2D results, correctly display edges Fix dragging multiple objects with snapping on 2D level checks improved Handle catchment connectors correctly when centroid in outside polygon Handle opening invalid files appropriately WLL trimming fixed ECW files correctly handled 2D advanced parameters supported, 2D directories now supported, Frequent Layer control refreshing fixed XP Tables paste fixed Multilink dynamic view improved to handle ceratin data set Added checks to fix models with global database duplicate names

Improve min area calculation VERSION 10.6.3 (OCTOBER 2008) (SERVICE PACK 3) Enhancements 2D Plot output charts options enhanced xpswmm now compatible with Watershed Modeling System (WMS) v8.1 import/export link Maintenance DTM display with restricted range now draws correctly Save as template now resets node/link counter for creation Graphical Encoding settings file now saved with extension always Modiy inverts - setting to lowest invert now works when old inverts at 0 EPA SWMM5 export to storage nodes fixed Check valid valid arch sizes on solve Fix error in reporting of design flow for closed conduit Allow 10 char for an object name to make consistent printing in Table T4 2D plot output lines now drawn with direction Ensure 2D results Depth file is created when head is computed Ensure nodes created are snapped to exact locations if snapping is on Check object name validity to exclude invalid characters such as " Fixed snap to Grid when offsets are not zero Get rid of all of the Checks for special prefix of object name to control simulation setting Handle footers correctly in Printing Support long path Name. Up to 246 character (for 1d) including file name. Fixed Max Flow depth cal in Table R9. Added a new local variable (PEAKQ) to track the total runoff

during the same timestep Inlet Capacity: Maximum capacity editbox now enabled/disabled correctly for given type Correct results picked for Review results when all scenarios are not active Pipe design - diameters now updated for multi conduits Spatial Reports/Graphical Encoding fixed when active Sceanrio changed When selecting objects all object types are active by default Spatial Reports/Graphical Encoding fixed when data modified via XPX Object Labels - Allow the counter for the node and link names to be increased DTM display now does not use transparencies to draw contours, just fill areas Sediment depth draw in Sectional views fixed to look at US/DS object Memory allocation errors adrressed. Ignore rotation axis when viewing AutoCAD files Fixed error in switching Network and XP Table views Allow the catchment names in XPX file to be imported as case insensitive Fixed initialized problem for RNF kinematic wave parameter Separate kinematic wave length for all the impervious areas Fixed problem in detailed printout of pump (and other) results Zoom out in Plan view section fixed Ensure a valid DTM exists for 2D models Additional 2D model data validation added Export to DXF now does not export muliple links Fixed 2D contour export when extent polygon has rotation Water Quality issues: Fix summation calculations

Version 10.6.2 (July 2008) (Service Pack 2. SP2 contains SP1 Changes) Enhancements Highlight rows with selected objects from network in XP Tables Added Automatic generation of Water Level lines, Deletion of WLL, draw WLL directions SCS Curve number Loss Method now available across other hydrology methods such as Clark Maintenance Fix dialogs for HC-12 and 2D Eddy viscosity to display optional (radio items) correctly Modified EPA export to handle Dry weather flow data correctly Fixed intermittent Minimize/Maximize of network view crashing Support Double type fields in MapInfo MID/MIF files (e.g. importing Z points for DTM) Show warning message if active node(s) in runoff and not in current simulation (App Settings) Allow the node/link prefix name to be empty for new names Display error message if simulation time for user defined rainfall is less than 0 Total Ground water flow now reported correctly in XP table Support corner specified ESRI ASCII grid files (specified by xllcorner and yllcorner) EPA export now exports storage curves correctly Used default min/max limits if user defined size is beyond the range for Ellipse & Arch shape conduit. Allow multiple instances of application to exist Map Project for MIF file created, correct the coordinate setting for the extent Profile Plot: Increase number of points from 100 to 1000 Calculation of Excess Rain & Infiltration when multiple subcatchments are attached to single node Allow the dynamic/long section display without the need for running the model simulation Fixed display of Gauged Flows for Runoff Node Show the number of selected objects in each layer that will be deleted on delete key Protect memory allocation for database filenames RDII time step precision increased Added time out for web update check Only show 2D results animation controls when 2D results are valid Refresh network view on deleting image(s) Modified EPA export to export handle weir names with spaces, export special conduit types correctly Hazard (VD) now optionally computed at every time step on simulation, and stored in results file RDII rainfall data has been extended till simulation end time Save the 2D map results flag correctly Fix Horton to Uniform loss conversion when Proportional loss (Max ignored, Min used) Reporting of stage and depth values now considers all incoming redirected groundwater flow Display error message if direct input evaporation data is invalid/missing Check and display error message if invalid rainfall data when using global storms Data convertor now imports RDII data from EPA SWMM 5.0 Support tooltip to display both imperial and metric units for all dialogs (e.g. Hec-12) Fixed conduit split when the split is not at the middle position Added "Catchment Area" in Summary of Quantity and Quality Results (OUT file). Hec-12 Inlet Capture: Indexing problem between Intel type and Pavement type has been fixed. Allow Default values for all XP variables to be set from INI file (e.g. Sacramento Hydrology) Support SHPT_POINTZ data type in shape files when building DTMs Allow all XP variables to be imported in XPX file (e.g. Sacramento Hydrology) Correct reporting of Node Crown Level when ponding allowed option is used Export only active nodes in hydraulic mode in 2D models Reporting of total surface runoff depth, total flow and loss now considers all incoming redirected

surface flow Export correct elevation data for 2D fill areas for imperial units

Export nodes when they are connected to non-active open channel linked to the 2D mesh Quick Data View now updates correctly with selection changes Fixed conduit length/slope calculations for multi links (were ignored) All 2D result files are deleted before commencing to create new result files Quick Data View now loads correctly VERSION 10.6.1 (APRIL 2008) (SERVICE PACK 1) Enhancements Clark Hydrology added Added CatchmentSim Data Exchange Online Help now added for access to latest help from xp web site Added Uniform loss Infiltration (Initial/Continuing Loss) New 1D/2D integrated solve window, faster 2D runtimes Added GIS layer for viewing MapInfo(mid/mif)/ESRI(shp) files Maintenance Elevation checks on 1D/2D Interface & connected nodes now checked based on

2D Job control setting DTM:Fix legends for flat terrains DXF Export for links with vertexes fixed Node selections flag checked for valid selection Deselect objects in layer when selection/visibility for layer turned off Spatial report format dialog fixed for invalid options Scenario now saves catchment flags correctly if >3 catchments Plotoutput points/lines, removed invalid properties, added delete, rename Plotoutput line vertexes not corrupted when exporting for imperial files Fix External Database import for records with missing object names 2D Output results to CSV formatting fixed User defined rainfall not dependent on station variable being set Support xyzs file format import without s value (creating DTM) Added ability to import 3D breaklines from GIS files Additional Progress controls added for opening database Setting the node invert to lowest connected link invert is not determined by existing node invert Fix zero divided problem resulting from calculated surface area Engine supports long path name Fix flow depth calculation problem when sediment depth is modelled Revised memory allocation for Sacramento hydrology Fix error in number of raingage calculation when HOT file is in use Corrected the ground water depth to be exported to RES file (XP table) Calculation of Infiltration over total catchment is fixed for RES file (XP table) Link Creation with vertices fixed while panning/zooming DXF Catchment export now incorporates drawing style 2D Results now splits render triangles at all user defined color points to display color correctly Improve 2D results file loading Fixed the color/hatch/linestyle popup window location when using multiple monitors Fixed DXF export to be compatible with AutoCAD 2009 VERSION 10.6 (OCTOBER 2007)

Enhancements Support ESRI Grid File Import for DTM creation Sacramento Hydrology now includes Nolte and Sacramento methods Export 12D format ASCII file with triangulated elevation information from DTM Legend for DTM added Integrated 1D/2D model now supports map result display for 1D component in network display Additional support of XP layers to be exported to GIS New AutoCAD DXF export with more support for XP layers 2D results now exported to ASCII grid file for current time step 2D result contours now drawn optionally by interval specification Cross-section profile on DTM now marks user created vertices RDII - Rainfall derived Infiltration Inflow Added in Runoff layer DO-BOD - Dissolved Oxygen BOD Interaction simulation added in Sanitary layer Maintenance Increased maximum numbers of vertices to 100,000 for each Poly mesh Added ability to reverse layout of cross-section direction and display banks on layout Support long string names Validate extension when creating files (XPX) Able to handle large DTM in 3D view Only Display flood symbol when not sealed manhole and HGL above Ground elevation Export 2D results contours corrected ECW background image now saved and managed correctly when more than 2 files 2D Water Elevation map displays fixed, now uses DTM elevation for non flooded area Added 2D cell count to properties of 2D extent Catchment connectors now display connection information Spatial reports now hides blank fields and reports and refreshes after solve Drawing speed enhanced for large network models Network grid control now snaps object correctly 2D Legend data now initialized and saved correctly 2D result vectors now draws Added legend for 2D water elevation display (head) Restoring of Previous view now works Text object management revamped and attributes enhanced Network map view animation AVI files now produced with compression Plan section legend display now fixed XP Tables: Handle precision correctly, load and save precision for fields fixed Allow link imports from GIS files to be connected to existing nodes based on locations of endpoints Printing: fix page margins for imperial unit setting Fix display of object's notes in XP Tables Allow more than 32000 items in XP Database list as needed Handle large paths when running the program via the selection of XP file in explorer Hydraulics WQ: fixed export pollutant data when more than one pollutant and a different user list Updated pipe sizes now saved correctly in appropriate scenario Fixed profile plot results when using multi storms Fixed memory allocation for large networks Unit conversion in SAN open channels for Metric Unit corrected Continuity report in Table E21 updated, now based on Inflow/Outflow listing in the table Overflow Calculation for 1d2d integrated model updated, removed dependency on spill level of open

channels BMP computations fixed Unit of the Pollutant exported to external CSV file fixed (unit=mg/l)

Total inflow and outflow to/from a node is corrected considering the effect of negative flow and multi-barrel

Directory/path setting of INI file is corrected to access correct Configuration parameter Horton infiltration calculation corrected when total infiltration exceeds max infiltration volume Reporting of peak minor losses in a reverse grade conduit (culvert) corrected Interface utility program is updated to make it compatible with upper data file version VERSION 10.52 (MAY 2007) Enhancements Import Node/Link Elements from ESRI Shape files and MapInfo Interchange files Support added for RTC sensor second trigger value Added directory paths for saving 2D results/check/log files Maintenance Create Option in DTM Property Dialog now launches DTM Builder Split Conduit now splits link with multiple vertexes correctly EPA Export - Check for names with spaces, display log file, export X-Sections if link active, fixed sections

Buildup/WashOff When Storm/Scenario change on network view ensure Spatial Reports Graphical Encoding gets

refreshed Automatic backup timer minimum occurrence set to 2 minutes ignores prompting and checks if solve

active When closing main window check printing correctly Graphical Encoding Restore now restores the normal network draw Correctly pop up menu when right mouse click to access options on selected vertex 2D Water Head draw speed fixed Support Text with greater than 30 chars Graphical Encoding - support encoding of Boolean variables, correct use of node/link flags for txt sizes On closing job, the extents of network are not recalculated with each object removal Calculate the network extents correctly when multiple tins exist Load 2D messages file correctly for jobs in imperial units Perspective View navigation improved 2D Point Charts - fixed last point on chart that showed max data Fix 2D draw of map results - sometimes triangle edges drawn in black Spatial Reports, hide/show blank reports as previously DTM Builder: Handle comments in xyz line as start of new break line when appropriate Vertex insert fixed on last segment Export inlet configuration data for active HDR nodes only Fix multilink profile plot data Results Depth Legend drawn correctly for restricted range data setting When reading XYZ file in DTM Builder new lines also start new S i.e. restart break line Multi Link Creation and vertex handling made similar to single link 2D Results: restricted range now reflected in Legend 2D results now created for the specified results types only Background image filenames now saved as long strings ECW background images now reloaded correctly Dynamic section view now corrected for multilink elements with scenario/global storms 2D results files now created with scenario/global storm names Number 2D active cells now based on extent polygon, active regions need to exist within Fix reading of polygon elements from GIS files when data filtering used Fixed catchment loading, when catchments are modified.

Fixed time lag with gauged rainfall, gauged data plot and gauged user inflows VERSION 10.5 (NOVEMBER 2006) Enhancements Integrate Sacramento Hydrology 2D - Node connections are now either at inverts or spill crest DTM Creator - Read Polylines from MID files as breaklines, supporting contours Exports network layout to jpeg, gif & bmp Export Graphics now exorst current image to jpg,bmp,gif Diagnostics MIF file now supports Regions Optionally display time on dynamic 2D results animation Added ability to change application background colour New AVI capturer - 2D Results now captures to AVI at every timestep Added Water Elevation and 2D results cross-sections Added ability to modify units of imported data from external databases Allow printing with AutoCAD drawing as sheet styles GIS import now imports Multi conduit, pump,weir, orifice & other diversion data Display simulation period vs run-time efficiency at run time Added Configuration Parameter LOG_RTC (or LOG_RTC)to write RTC controls to the .OUT file Added additional point at beginning of simulation for Runoff Review Results graphs Display Interface File time and date in MM/DD/YYYY and HH:MM:MM format Allow the same landuse to be used multiple times when defining buildup-washoff characteristics Report on Sensor condition in RTC Use depth to centreline of orifice (new default) rather than depth to invert when using Configuration

Parameter USE_ORF_EQN. Added Configuration Parameter USE_OLD_ORF_EQN for backward compatibility Limit HGL for a node whose spill crest is above 2D ground elevation GIS module now allows import of Breaklines from Mapinfo Interchange and Shape files Export to EPA 5 Database added as optionable module Added XPX command to import catchments Added description to network nodes & links Added smoothing to 2D result contours Draw sendiment depths in cross-section and long-section views Gauged Data now support user defined files Maintenance Handle Shape file as background without associated dbf file Correct draw of link elements (with vertices) when creating/moving Correct delete of Node/link elements when Spatial Reports attached Fix saving of toolbar positions and status, add visibility access from menu On appending selected objects, correctly traverse from last selected Correctly save 2D Fill Areas whne multiple fill areas exist Zoom Rect now checks horz/vert fit Fix 2D results imperial unit conversion for displaying maps Runoff Redirection option correctly displayed as valid for RUNOFF method Importing External databases now converts data with different units correctly DTM Creator - Handle multiple type of elements in mid file, and skip data appropriately DTM Creator - Read lines from MID files as breaklines/contours 2D BreakLines - now uses imperial units correctly Toolbar window positions/status now saved

Background image display now optimized to only render when scale/origin changed 2D Results Plot outputs consolidated XP Tables - filters fixed for OR join Catchment layer Area calculation now shows appropriate units Fix save/load of default node/link display type Invert management now handles selected objects in disconnected networks 2D result locations fixed for imperial units 2D Result Map Colors selection/editing and Vector management improved Fixed reading of catchment results data 2D Results peg now adds correctly & range on data frequency fixed 2D results vector properties dialog loads correctly 2D results intensity color fixed DTM now rendered to boundaries Allow drag of all selected network elements XP Tables - fixed number of columns pasted from clipborad, do not save void cells Import External databases - Correctly report number of vers read when importing list data Import External databases - Fix importing of GLDB items (natural channel shapes) Fix status bar display when main window resized Fixed saving of 2D model ridge/gullies lines Save as template file now does not save xp database but only template file XP Tables - Fixed problem with copying and pasting in drop down cells XP Tables - Fixed bug with indenting variables Fixed opening of xp files with multi-storm results in Spatial Reports XP Tables - fixed problem with unit display and xy co-ords Printing fixed Replaced Job Control Dialogs Speed Improvemnts to 2D results display 2D results now further tesselated for color refinement Handle long DBF filenames when importing from external databases Handle formating of custom variables in XP Tables Fixed 2D Roughness, default roughness now does not override defined Roughness areas Points, arcs now handled in ESRI Shape files Connfiguration parameter MGD now reflected in results display Now handles invalid Spatial Report settings correctly Swmm Configuration parameter list now saves/loads correctly 2D Results now have additional formating options for maps/vectors Fixed dialog reload (optimized) when object deleted 2D results loaded with correct units for metric files Fixed problem with centering object from XP Tables Fixed Profileplot startup. Fixed loading of object images Inflow and outflow calculation for continuity checks has been corrected in reverse grade Storage Node Depth measured from invert: Surcharge elevation has effect in model now. Continuity check and functionality in RTC module has fixed Using of Rainfall interface file has been fixed Storage node volume (last data point) is corrected Inlet Rating curve: Surface & subsurface node HGL have been matched Subcatchments with two or more rainfalls with different durations at a node is handled correctly now Now performs WQ buildup for the 1st time step. Spatial Reports and GE now display multi cond data correctly. 2D active/inactive areas correctly displayed Use correct snapped point for 2D Layer connections

Fixed XP Tables subcatchment results display Read 2D Node data from Tuflow BC file to detect SX nodes (nodes not connected to open channels) Removed duplicate copies of Configuration Parameters from run-time display Do BMP Water Quality removal on Runoff nodes after all sub-catchment BMP removals have been

aggregated Corrected problem where WQ flag in HDR layer was not always set Corrected DWF units when using GPM and MGD Configuration Parameters in combination with DWF

input Set Runoff flow and quality to zero when Runoff simulation ends before HDR and solving both layers

simultaneously Fixed error reading hardware lock in 2D simulation Changed end volume calculations for 2D Power Function Storage: Volume calculation has been corrected Allow buildup to always occur at the first time step Fixed zero divide on catchment area Fix to depth dependent roughness Corrected Water Quality table headings in Statistics Layer HGL for flooded subsurface node now matches with surface node when inlet capacity is ON Don't delete hotstart file when solving RNF and HDR layers simultaneously When importing External Database handle selection of list data correctly and add additional validity

checks Fixed resource leaks in general graphics management Create Links now draws correctly Fixed area calculation on ruler tool Fixed launching of application when running xp database from File Explorer Handle External Database where field names have trailing spaces correcty Fixed Global Database constant rainfall type display in dialog Fix calculation of major/minor contour elevations for DTM Fix insertion of vertex in polygon on the last segment When global storms active anaylse in multi-mode ragardless of current mode Fixed 2D results contours at the boundaries Fix editing of node labels in network view Fixed 2D Results Head display Allow ctrl select button to both select/deselect nodes/links XP Tables - correctly display appropriate scenario, fixes problems when child scenarios created in diff

order Allow for missing min/max values in 2D results Fix incorrect conversion for imperial 2D flow/velocity results XP Tables Result display (with multistorms ative in RNF) fixed when solving in Hydraulics only Fixed saving of fill area elevations Fixed memory leak when reloading files with DTMs and contours displayed Handle delete of object with Spatial Report displayed Added saving of some 2D result display attributes Fixed display of gauged data in Grid format VERSION 10 (FEBRUARY 2006) Enhancements Added 2D Hydrodynamic modelling capability Added Support for Digital Terrain Models BMP supported in Runoff & Hydraulics layer

SWMM 5 Data Import added XP Tables major enhancements - Support global data, easier variable management, formatiing options,

etc GIS style layer management Added generic Polyline and Polygon tool Added ability to change visibility/moveability/selectabilty on all network elements AVI Creation of network 2D simulation Improved link vertex management Dynamic zoom added to mouse wheel Network Drag added to Right mouse click drag Support for ECW files as background images Ruler tool added Timed Backup now supported Newtork object name prefix defaults and default drawing styles added External database now supports import of list data GIS module now imports geometric elements from Mapinfo mid/mif and shape files 3D Perspective view added to visualize terrain and network elements Added DTM Buider to create DTM from existing network & xyzs,mid/mif files Cross-section for open channel now supported, automated creation from DTM and link to channel

shape Added roughness zones global data and in layer control Added catchment layer and linkage with existing catchment nodes Spatial reports now as tooltips on network elements XP Tables - displaying subcatchment node results Maintain creation cursors while dynamic zoom & Right mouse click drag Display 2D results maps/vectors and legends Added F4 key as Property Key of currently selected layer Added XPX command for Vertex data for links & its cross-sections Add Property and Delete All for most layers Support polygons and polylines in a mesh so as to share common vertexes Imporved network draw speed Calculate inverts and ground elevations from DTM Added Snapping to network elements Added functionality to save status of toolbar Added Progress control to main network frame for better user feedback Spatial Reports and Graphical Encoding settings now available from layer control Added cross-section profiler to to view sections on DTM Abilty to add patterns and transparency to generic polygons Addtional 2D network elements (areas, boundary conditions, interfaces) Security related to network users Allow Water Quality pollutant removal in Runoff Layer Allow Water Quality pollutant removal in Hydraulics Layer Added wet and dry ponds to Runoff Layer Added BMP Names and other format changes to output file Allow files created for Review Results to be used in statistics utility Allow outflow from BMP's to be dependent or independent of inflow Implemented RAFTS routines to exactly duplicate RAFTS results Optimization of HEC-12 Inlet Capacity data to allow more manholes with dual drainage Continuous Snowmelt now uses dynamic memory allocation Maximum number of return periods for IFD (IDF) increased from 9 to to 20 Added more flexibility to reading Free Format rainfall data. Volume of conduits connected to a node are now included to improve stability of WQ concentration

calculations

Preissman slot transition width changed from 25% to 1% to improve volume calculations for rectangular conduits

Restrict subsurface node water elevation to water level of surface node for Inlet Control Include maximum link volume in output file Message added to indicate a file that needs to be written to is open in Excel Added Configuration Parameter YEAR_XX=<xxxx> where <xxxx> is the number to add to a 2-digit year

(default is 1900) Added Configuration Parameter NO_OPTIMIZE_LOOP (or NO_LOOP_OPTIMIZE) to only loop through

conduits connected to the current node. Default is ON Added Configuration Parameter RECT_SLOT_TRANS=<xx> where <xx> is the transition width from a

rectangular conduit to the Priessman slot (default is .01 (1%)) Added Configuration Parameter OLDRAFTS (or OLD_RAFTS) to use the original Laurenson method. The

default now uses the actual RAFTS code. Added Configuration Parameter 2D_WEIR_LEN to use the sharp-crested weir equation to calculate flow

from a 2D surface into a manhole. Added Configuration Parameter 2D_ORIF_AREA to use the orifice equation to calculate flow from a 2D

surface into a manhole. Added Configuration Parameter SAVEALLPTS to save all points in a simulation for Review Results.

Default is to now only save data if it has changed from the previous timestep, significantly reducing file sizes.

Removed 2Gbyte limitation for Inlet Capacity arrays greatly increasing nodes available for dual-drainage (10000+)

Add reverse flow flap gate to rating curve Maintenance Added link label transparency & show/hide arrowheads New Job Wizard now calculates simulation time on date change Plan section view - draw nodes on top of links Added iteractive check on multi-storm limits and storm data validation External Data Mappings saved on window close. Fix long-section direction of plot and defaults modifed Fix merge of XP databases so that it does not rename existing objects Added missing Hec12 data from curb inlet confg Graphical Encoding field mappings dialog extented to accomodate longer lists On new file creation if data.xp exists chooses next available name Issues with copy/paste in XP Tables and grid dialogs resolved Rational Formulae units displays fixed Resizing of pipes (design) now stored as part of scenario Corrected implementation of MAXPTS=-1 configuration parameter in Sanitary Layer Check for reverse flow when calculating max d/D ratio Allow for reverse flow when calculating pollutant concentrations Fixed problem whereby Runoff results now displayed when run simultaneously with Hydraulics Fixed an intermittent problem reading configuration parameters from the SWMXP.INI file Delete zero-byte files on exit DVDT term modified to improve stability of water quality routing DWF loads in Sanitary Layer for units other than CFS were corrected for process flow Check for possible zero divide in Groundwater routines Groundwater redirection to a downstream conduit corrected Check for valid node or link before diversion of groundwater Flows converted before output to interface file Change to weir surcharge calculation Removed Configuration Parameters MAKE_XPX and USE_XYINFO, they are now available within the

interface

In 2D simulation get node depth from 2D (TUFLOW) simulation Correct pump on/off count Volume reporting now allows for 2D flow exchange Green-Ampt infiltration corrected to account for losses greater than available rainfall Removed duplicate code causing additional gutters to be created instead of as additional inlets Continue to perform washoff even when concentration is zero VERSION 9.52 Enhancements When using global storms display active storm in Window for viewing results Maintenance Dynamic Section Views now displays water elevations correctly for current Scenario/Storm Fixed RTC Sensor selection Read and Display correct water elevation when using inlet capacity Tidy up Rational Formuale Hydrology fields Empty unique object names list on database close Correctly read subcatchment results after solve Use correct multilink pipe length/grade/Rl in ProfilePlot Use correct scenario/storm results in Profile plot Graphical Encoding & Spatial Reports now displays correct results for given scenario/storm VERSION 9.51 Enhancements Security related to network users VERSION 9.5 (MARCH 2005) Enhancements Modify Elevations - Allow setting Node invert to minimum link invert Added LINK_MAKEMULTI to XPX Command handlers for converting single conduit to multi conduit Allow suppression of all intermediate printout Read new AES rainfall format Keep processing rain interface file even if rainfall is missing for one or more years Added individual hydrology subcatchment results in Tables Variable selection dialogs now resizable Maintenance Scenario Manager Fix - correctly check modified data when comparing with default data Global Storm Fix - export only active storm with respect to Scenario Scenario Manager Fix - correctly save list data when saving scenario data Scenario Manager Fix - Remove redundant transaction recording Tables - support Infiltration global databases correctly Tables - correctly display catchments numbers Tables - Filter now works correctly for value comparison Hec-Ras Data imported fixed for unnamed sections and use averaged roughness Additional checks for object name uniqueness before adding to network Check for pipe length to see if any below simulated min length

Correction to VARIABLE_N configuration parameter. Use values of n/nfull for circular conduits from T.R. Camp Sewage Works Journal vol 18 Jan-Dec 1946. (City of Spokane)

Correction to continuity calc for multiple conduits connected to an outfall (does not affect results). Corrected memory over-write in run-time graphing that could cause the program to crash if run-time

graphing was selected multiple times. Corrected pollutant removal problem is ST Plant module for pollutant numbers > 5. Corrected potential zero-divide when calculating the normal depth of a section that overtops the base

of a natural channel or trapezoidal section (when using VERT_WALLS) Corrected error caused by attempting to design a conduit that was actually a rating curve. Corrected numeric underflow in calculation of pollutant concentrations. Corrected memory allocation error in number of detailed printout locations. Corrected format of interface file written by hydraulics layer (when re-used by another HDR run). Corrected calculation of conduit diameter from flow in LA County method. Corrected hydrograph spike in LA County hydrology method caused when storm duration is less than

time of concentration. Corrected error in WASP interface output file. Fixed Numeric Underflow in Scour/Deposition. Formatting changes to metric output in sanitary layer Check for zero watershed area Use natural channel default data if cross-section available Hec-Ras Import now handles single mannings for a channel Added pollutant data/results to variable selection for Hydraulics layer (XPX/SR/GE) Handle XPX Import/Export Pollutant concentration variable "F_T_PCCON" VERSION 9.14 Enhancements Remove rainfall data echo from the .OUT file. Use ECHO_RAINFALL to show rainfall. Added the configuration parameter SUBCATCHMENT_RES to create a $subcatchment section in the .RES

file. Added the configuration parameter GW_CSV to create a CSV file of groundwater results (max 256

columns per file) Added the configuration parameter RESSNOW=GWSTAGE to replace the Snowmelt parameter in review

results with Groundwater Stage Added the configuration parameter RESSNOW=GWFLOW to replace the Snowmelt parameter in review

results with Groundwater Flow Added the configuration parameter RESSNOW=GWMOIST to replace the Snowmelt parameter in review

results with Groundwater Soil Moisture Added the configuration parameter INIT_TS=xx to set the value (in seconds) of the initial time step in

the HDR simulation 9to remove the initial peak flows caused by a dry conduit) Added the configuration parameter ZERO_DEPTH=xx to set the value (ft or m) used as zero depth

(default 0.00001) Added "additional travel time" to TC calculations. Report peak loads and concentrations, remaining loads, and water quality continuity error Added DRYWET_TS=<xx> Configuration Parameter (where <xx> is in seconds) to reduce the timestep

used in the transition from no flow (and minimize the initial spike) Added DRYWET_DUR=<xx> Configuration Parameter (where <xx> is in seconds) is the duration for

which the DRY_WET=<xx> time step is applied Added FULL_WIDTH Configuration Parameter to allow inflow to be distributed using the width of the

conduit at it's current depth (Removes spikes from initial inflow) Allow groundwater redirection to a Runoff Node with zero catchment area Calculate and report surface width at US and DS ends of conduit at every time step.

Increased maximum number of points in LA hydrograph method (F0601) from 200 per day to 1500 per day

Added text error messages to LA hydrograph method (F0601) Write individual watershed results to SYF file Write individual watershed hyetograph, groundwater, Snowmelt and infiltration data to SYH file Notes on objects now Editable in Tables with unlimited string length In XP Tables show all multilink objects (pumps, weirs, orifices, etc) if name exists Correctly display all the multilink object flags in XP Tables Added Water Quality pollutant loading for LA Hydrology Read associated world coordinate file (jpw)for jpg image files for background images XP Tables now displays all objects in current network as well as all objects in model Field precisions now overridden from ini file Maintenance Correct flow continuity calculations for multi-conduits with multiple barrels connected to an outfall. Correct pollutant continuity calculations for pollutant number 11 or greater in SAN layer. Only put vertical walls on open conduits (not on preissman slot). Correct calculation of normal depth for zero slope channels with vertical walls (VERT_WALLS). Clean up excessive memory usage in RNF layer. Remove scratch file ASILEM.IB at end of run. Corrected rounding error in HDR water quality. Check whether a HDR node or conduit exists when using an HDR element as the groundwater boundary

condition. Corrected sub-catchment re-direction error. Corrected groundwater re-direction error. Corrected memory allocation error for RNF layer circular conduits. Corrected memory allocation error for groundwater wilting point. Corrected calculation of wetter perimeter for overbank sections with zero depth (when using

VERT_WALLS). Check whether weir is below the DS node Added additional checks on quality of interface file data. Corrected format of table headers in pollutant summary output Corrected memory over-write in SAN water quality routing. Corrected export error for 1977 IFD data. Aggregate watershed results for display at a RNF node. Fix Generate Intermediate Inverts when selecting DS to US Fix Reading of pump/weir results for new results variables Separated WP array into WP (wetted perimeter) and WPoint (wilting point) arrays Don't try to design the outlet from a free outfall when "design undersized conduits" is selected Check for numeric underflow for very small pollutant concentrations Correct reporting of natural channel conveyance for models containing parabolic channels Corrected problem where left and right overbank stations in natural channels could sometimes be

incorrectly located Corrected Inflow and Outflow detailed printout in Runoff layer Corrected channel and pipe routing in runoff layer Corrected array overflow errors in runoff layer Corrected continuity check in channels and pipes in runoff layer Corrected accumulation of redirected flows to an inlet (gutter) in the runoff layer Don't allow negative design depths in hydraulics layer Corrected writing water quality results to WASP format file Format of sanitary layer tables corrected Corrected output of groundwater moisture, wilting point and flow for metric units Printout ALL conduits connected to a node in the runoff layer

Miscellaneous fixes to LA Hydrology Procedure to gain County Approval Correctly display all the multilink object flags in XP Tables When object name changes correctly change names in all scenarios Save as now also saves the associated scenario database Allow XPX export of storage depth/area variables dlist data (e.g. user defined flow) now not sorted on cell change Correctly use sediment depth and inlet type defaults for analysis when not defined Added more checks when importing corrupt databases Correctly usage of temporal variations in HDR layer for analysis Draw the shape files correctly when shape objects have multiple parts Correctly lock file when file saved as another file repeatedly Scenario Manager now correctly updates data when same data modified multiple times in base. CUHP rainfall results now displayed correctly in Review results. VERSION 9.1 Enhancements Use 90% weighting of US area (removes instability in highly super-critical flow conditions and better

match of gauged results). Use SPATIAL=.55 (55% US) for previous version characteristics. Added SHOW_CONTINUITY configuration parameter to display continuity error dialog at end of

simulation Re-start analysis whenever conduits sizes change when designing undersized conduits Add Constant Inflow concentrations and temporal patterns in HDR layer to pollutant loads generated in

RNF layer Add WQ pollutant concentrations to RES file Added SPATIAL6 to Configuration Parameters to check for US and DS critical flow Added simulation summary data to the LA (F0601) hydrology method Added reading and writing user-hydrographs to LA (F0601) hydrology method Reset initial abstraction for SCS method after 10 days (or use SCSDUR=xx to change default) Expanded autoload to support templates Allow engine to run hidden or minimized using command-line arguments XP-SWMM Interface now supports solving using older engines and reading computed results Graph groundwater component of flow at a node for multiple sub-catchments draining to one node Graph Snowmelt component of flow at a node for multiple sub-catchments draining to one node Graph composite rainfall at a node with multiple sub-catchments and different rainfall Graph aggregate infiltration at a node with multiple sub-catchments and different infiltration rates Trap zero surface area for stepwise linear storage nodes and set to value at previous depth Warn if surface area for stepwise linear storage nodes decreases as depth increases Warn if low point in natural channel is not between left and right overbanks Increase maximum links connected to node from 10 to 20 Select all nodes and links upstream and/or downstream of a selected node (with right mouse click) Report groundwater draining out of system. Maintenance Route pollutants through adversely graded conduits in HDR layer Correct intermittent error reading outfall data in very large models caused by compiler optimization

bug Pollutants are now routed through pumps, weirs, orifices and rating curves in HDR layer (elements with

zero area) Storage nodes using the power function storage option now have the minimum surface area equal to

the default node surface area (use OLD_POWER_STORAGE for previous characteristics)

Trap potential zero divide for catchments with zero depression storage. Trap potential zero divide for catchments using kinematic wave method and zero impervious area Correct out of bounds error in Storage-treatment plant module Fix accounting for number if seconds in a leap year in statistics module Correct array out of bounds error in storage-treatment plant module Correctly display %complete during simulation of multiple scenarios Correctly display worst node or link during simulation run-time Correct array dimensions for pollutant characteristics (prevent memory overwrite) Correct array dimensions for peak pollutant concentrations (prevent memory overwrite) Corrected out of bounds error caused when only some sub-area of a sub-catchment have the water

quality flag enabled (when WQ is being simulated) Set concentrations to zero when flow is zero in interface file but pollutants are also being input in the

HDR layer Don't attempt to calculate flow in a conduit with no upstream depth but where there is a downstream

water depth. e.g. Tide gate closed Added additional variables to hot-start file Corrected NaN if two Rainfall values occur at exactly the same time and all adjacent stations are identical Don't allow ZREF=xx to overwrite Initial node depth if initial depth > ZREF, or when using fixed

backwater and no tide gate Prevent possible zero divide in SCS method Prevent possible zero divide in Snowmelt option Correctly display results for MGD and GPM configuration parameters Delete padded blanks from end of lines in HDR file to minimize file size when running simultaneous RNF

and HDR layers Move tracking of sediment size from local to global procedure Initialize Culvert rating curve to zero Add conversion factor for mg/l -> lbs/ft^3 Added version number to RES file Initialize left-bank and right-bank conveyance Track natural channel low-points Correct memory over-write of available pollutant sediment sizes Correct memory over-write of WQ node names Calculate correct hydraulic properties of Rectangular-Round-Bottom conduit when flow is at partial

depth of lower (round) section Correct zero divide when calculating time remaining on very fast computers Initialize MSGBOX name Initialize date format to mm/dd/yyyy Added code to read [DEVELOPMENT] section in INI file Correct seed-type to randomization function for EMC generation with standard deviation > 0 Corrected Infiltration I/I flow written to RES file Handle long filepaths and connection strings for importing external databases Appropriately handle strings that are longer than max field length Correctly display unit strings for on data graphs Read the lengths correctly when importing from a Hec-Ras file Record the XPX commands & rtc data into active scenario Fixed regeneration speed of AutoCAD background drawings Corrected Rational Formula method field definitions Fixed shortest path network traversal selection routine Variable Selection now loaded with alphanumeric ordering Fixed saving/loading from grid data dialogs for LA (F0601) data Correctly display units and cursor location on list graphs Fix delete button on both list data and graph Correctly display WQ graphs for Weirs and Orifices

On importing EPA dat files check for valid number of natural channel shapes Correct memory allocation to handle large databases objects Correctly display constant rainfall data for intensity values. Several fixes to the LA hydrology Procedure Fix zoom pan on AutoCAD files with negative ranges Appropriately generate redraws after Spatial Report settings have been modified Deleted erroneous message concerning rating curves causing conduits to be above the model ground

surface Corrected additional travel time component of rational formula method Corrected inlet rating curve continuity error caused by excess capacity of downstream pipes Corrected surface water continuity error caused by groundwater draining out of network Corrected surface water continuity error caused by multiple subcatchments (Version 9.03-9.07 ONLY) Corrected problem with sub-catchment re-direction causing surface water continuity error IFD Table depth and intensity printout restricted to durations stored in the input data. Recurrence interval interpolated correctly for 1977 rational formula method Fixed potential memory overwrite caused by excessive printout locations in RNF layer. Changed default maximum number of barrels used when designing undersized conduits to 10 (from

100). Corrected format of table headers in groundwater summary output VERSION 9 (JANUARY 2004) Enhancements Improved color selection. Now supports RGB colors throughout XPX Export adds Global Database and Global Data export XPX Export now using enhanced variable selection Grid controls now used in many dialogs for enhanced list edit, copy and paste Natural Channel cross-sections now saved into global database Modifying inverts and elevations of conduits has been improved Added HEC-RAS channel cross-section import Added scenario management Link Groundwater boundary condition to node or link water levels in hydraulics layer Added 110 new results variables to XP Tables in Hydraulics layer Added 25 new results variables to XP Tables in Runoff layer Solve Runoff and Hydraulics layers in parallel or series (using SIMULTANEOUS keyword) Added Rational Formula methodology (use OLD_RAT keyword for older rational methodology) Added water quality data to Hotstart file Added vertical walls to open channels and trapezoidal sections (up to node ground elevation) (using

VERT_WALLS keyword) Calculate gutter spread, depth and velocity Select from a list of available pipe sizes when designing conduits Design for a percentage of full flow Design for minimum freeboard (under pressure) Design for minimum cover Add multiple barrels if design constraints are not met (using MAX_BARRELS keyword) Design for multiple storms Don't allow under-relaxation of Orifice elements (unless using RELAX_ORIFICE keyword) Sort Nodes by number of connected pipes before solving (like SOBEK) (using SORT_NETWORK keyword) Provide very detailed output of natural channel data (using DEBUG_NATURAL keyword) Added Intensity-Frequency-Duration rainfall curves Added Time of Concentration calculations using Friend's Equation Added Time of Concentration calculations using Kinematic Wave

Added Time of Concentration calculations using Alameda Method Added Time of Concentration calculations using Izzard's Formula Added Time of Concentration calculations using Kerby's Equation Added Time of Concentration calculations using Kirpich's Equation Added Time of Concentration calculations using Bransby Williams Equation Added Time of Concentration calculations using Federal Aviation Authority Equation Allow multiple conduits connected to one outlet Added XPX Command "MODE RNF|HDR|SAN" Check for surcharge at both ends of conduit Added user-defined Preissman Slot width (using PSLOT=xx keyword in % of conduit width) Added ability to stop Sanitary layer in middle of simulation Added flag to ignore warnings on Solve (INI file setting) Support simultaneous runs at each time step in RNF(hydrology) and HDR(hydraulics) layer Now loads independent of Registry setting so able to install with previous versions Maintenance Fixed highlighting of links with vertexes Fixed generation of inverts when links are connected with different directions Fixed importing of XPX variable T_PCCON Storage-Treatment group number is exported correctly Fixed timestep in Review Results for CUHP method Don't allow ponding at sub-surface node when using Inlet Capacity Add a new point at the Node Surcharge Elevation (reduce continuity error for poorly defined stage

storage curves) Read Snowmelt and wind speed data correctly Read temperature data correctly Correction for plug flow in metric units Fixed evaporation in hydraulics layer (using HDR_EVAP or EXT_EVAP keyword) Use Centre channel lengths when left and right lengths are not specified Fixed highlighting of links with vertexes Fixed generation of inverts when links are connected with different directions Fixed Sewer Input Flows and Loads in Sanitary layer Show correct depth for Trapezoidal Channels User Defined Files now Support dates earlier then 1970 Draw Editboxes correctly on Windows XP. Check validity of supported dbase filenames when importing external databases Corrected output of DXF files for all RNF layer Tipping Bucket rainfall data to use application date format Fixed header in Sanitary layer output file that printed "OUTFLOW HYDROGRAPHS" when "Print Input

Hydrographs" was turned on Fixed WQ concentration in Hydraulics layer for storage nodes with almost (but not quite) zero outflow Use single error log when doing multiple solves Correctly display the surface elevation in Review Results Correctly display the max stage when -ve elevations present in Review Results Load the appropriate result data for multi-conduit elements in profile plot Fixed Copy/Paste to Sewer Inputs Data Now saves current XP Table tab position Number of times first pump turned on in a multilink was reported as one less than actual number Rating Curve Washoff corrected for metric units VERSION 8.53

Enhancements Added LA Hydrology Procedure External Database Import. Uses the X & Y in Mandatory Fields to update the position of existing nodes. Detailed error messages for External Database Import/Export. Added Conduit Max Volume Variable Added support for creating new job as blank database Added Regen All command under View menu (Also added Active Job Control to toolbar) Added Table E14a - Natural Channel Encroachment Information Added Table E14b - Floodplain Mapping Added Left, Main and Right channel volumes for natural channels Added maximum link volume (during simulation) to Table E15 and time series to "Detailed Printout" Added Conduit Slope calculations over entire or specific network elements Added encroachment depth to output file Support Lahey Interface files created by PDX-SWMM Always use USE_ORF_EQN keyword if using RTC Added additional error checking to hot start files. Horizontal and Vertical Ellipses are now checked against max and min sizes. Allow 500 files for multi-runs. CUHP now supports global plus catchment-dependent rainfall Added Attributes to Text context menu Maintenance Fixed nodes drawing issues, nodes were not drawn under circumstances External Database Export update compatibility improved, especially with Excel, Access & DBase IV. Spatial Attachment and Boxes drawing fixed Increase the number of weirs and orifices handled by review via INI setting (MAX_WEIRS &

MAX_ORIFICES) Check node name validity (quotes etc) when importing from EPA file Correctly display us/ds node vars when displaying multilink objects Show Window titles correctly Save current selected table Fix maximum infiltration volume Correct rainfall utility for 4-digit year EarthInfo ASCII format Correct rainfall utility for 4-digit year for new Canadian AES format Correct rainfall utility for user-defined rainfall on last day of year Fix to Temperature Utility to read user-defined temperature data Fix to maximum allowable infiltration volume for Horton infiltration Correct event duration reporting error for 4 digit years Correct run-time graphing at nodes Calculate storage in adverse grade dry conduits using intersection of water surface and pipe slope Report results for more than 10 pollutants correctly in HDR layer Check Object Name is unique when on screen Object editing and also via Tables Fix up Graphical Encoding encoding to encode by Link width by int vars Correct error caused by 9th detailed printout location being named C2 Fictitious rainfall volume at the beginning of a storm has been eliminated Evaporation in HDR Layer (using HDR_EVAP) has been corrected Remember the selected XP Table and highlight restore it appropriately Correctly display units in gauged data dialogs Export the CUHP data correctly when analysing, resolve conflicts with EPA data Draw network properly after Print Preview of network layout Check invalid or missing inlet rating curve references Fix Import (XPX) of S/T Plant variables

VERSION 8.52 Enhancements Added Conduit Slope calculations over entire or specific network elements Multilink objects now supported in Quick Data View External Databases now uses OLE DB connection by default and optionally ODBC Maintenance Fixed Location of OK & Cancel Items on Resizeable Dialogs Reliance on Sentinel Server removed and upgraded sentinel drivers Correctly load English resources on all language OS. Sorting of objects fixed on XP Tables Initialization color of Text objects fixed Fixed variable for Outfall Depth Criteria Subcatchment flags and Rainfall Reference handled correctly on Quick Data View and XP Tables Database Driver Pack now available separately for External Database connections. VERSION 8.51 Enhancements When saving view status, also save object selection

Maintenance Check Object Name is unique when on screen Object editing and also via Tables Fix up Graphical Encoding encoding to encode by Link width by int vars VERSION 8.5 Enhancements Implemented Export of Data to External databases (Access, Excel,Dbase, ODBC, etc) Implemented Multiple Connection settings for Import/Export of External Databases Added a wizard mode to create database connection and mapping Added Multiple storm handling and comparison with result comparisons New File creation now has a default global data & default object field setting Update conduit lengths (single/selected) based on real world co-ordinates Implemented new variable selection (with tree control) Design, Natural Surface and Services added to Link Profile for illustration in Profile Plot Quick Data View added to Display Added multiple XP Table viewing capability like sheets in Excel Added Filters to XP Tables and optionally display different object types Correctly display multilink as individual objects i.e pumps, orifices, weirs etc. Notes added to Link Context Menu Object Search names (exact) extended to pumps, weirs, orifices Support for USB and Sentinel Plus Locks XPX command added [GLDBITEM "global database" "name"] XPX command added [GLDBDATA field name "global database" "name" N data1..data] Added Most Recently Opened Files in [Files/Recent Files] Added Misc SWMM utilities (user defined AP Launcher) to [Tools\Launch Application] When depth for open channel is zero substitute depth as ground Elev - invert Maintenance Analysis using existing floodway encroachment stations no longer changes those stations at the end of

the simulation. NWS Post 1980 Fixed Format rainfall data now supports 4 digit years Fixed calibration interface problems Increase the maximum number of active rainfall databases from 100 to 1000 Corrected display of tif file location Correctly display saved views in menu to restore Consistently edit link/node names in network on selected objects with Dbl Click Corrected node label drawing in Plan Section display Corrected zoom extents on network Always delete temporary db~ files Corrected Field Info & scrolling on HDR DWF dialog Fixed Object search for partial names Fixed Paste Data with respect to CUHP data When exiting a dialog (cancel) ensure network redraw is done Read and apply DATE_FORMAT variable in analysis engine VERSION 8.2 Enhancements The RTC module now caters for the situation where a RTC device is re-activated before it has finished

Initialize the old area of a conduit to the new area of the conduit at the first time step to reduce dry-pipe spikes.

The sizes of elliptical conduits are now restricted to the maximum and minimum values shown in the help file.

Use orifice equation if using RTC Under-relaxation parameter removed from orifice equation RTC modified to use Gain parameter in calculation of sensor tolerance Check elliptical conduits for maximum and minimum sizes Use Left, Right and Centre channel lengths for natural channels (like HEC-RAS) Show Rainfall in Review Results for CUHP Hydrology Can now run Hydraulics and CUHP Hydrology simultaneously CUHP method allows hydrographs from different storms at different nodes to be saved to an interface

file Show elevations or depths at diversions with REVIEW_ELEVATION or REVIEW_DEPTH parameter (default

is REVIEW_ELEVATION in Review Results) Calculate left & right overbank properties in natural channels from actual cross section Calculate starting volumes for continuity error check using hot-start parameters Remove under-relaxation from weir flow calculations (modeled explicitly) Show Rainfall and infiltration in Review Results for Runoff Hydrology method Maintenance Corrected memory error for pollutant routing in Hydraulics layer Generate CUHP hydrographs in Review Results for all print options The friction loss reported in XP-Tables has been corrected. Report negative maximum elevations in tables and long section profiles Treat free outfalls with and without tide gates in the same manner Set minimum tide elevation for outfalls with tide gates at invert of outfall (not invert of US node) Report depth section property correctly for user-defined conduits (no effect on results) VERSION 8.1 Enhancements Added the Configuration Parameter REDUCETIME=xx to reduce spikes due to dry conduits Added the Configuration Parameter SCSDUR=xx to set the number of days for continuous SCS rainfall

before resetting K (default = 7) Allow Ponding Allowed with Inlet Rating Curves Default iteration limit set to 0.1% of flow (Q_TOL=0.1) Added Maximum Infiltration Volume for Horton Infiltration RAIN Utility no longer requires rainfall gauges to be sorted in order of latest to earliest ending date

when appending gauges. Maintenance Instabilities caused by expansion/contraction losses in conduits connected to weirs and pumps has

been corrected Correctly export the points for natural sections with floodway encroachment Merge Temporal Variations Global Databases correctly Correctly display d/D variable in Spatial Reports Correctly display field info for Node Dry Weather Flow Variables Fix Review of RNF Node Results when Inlet Capacity Active in HDR Layer Fix Import External DB Variable Selection for Win98/WinME OS Corrected the drawing of labels in the dynamic plan view

Correctly display inlet type description on selection Correct export of Encroachment Data when encroachment is inactive VERSION 8.06 Enhancements Inflow through an outfall node is now reported in the output file and accounted for in the continuity

check Initialize maximum velocity at end of first time-step instead of start of first time-step Variable formatting now rounds the last decimal place instead of truncating MAXPTS=-1 allows graphing of all points in Runoff Review Results Added ability to have pervious surfaces run onto impervious surfaces (or vice versa) and also flow

redirection to another node Limit warning messages about end of data on the interface to one instead of once at each time step Added d/D to output file and XP-Tables and added warning to output file if d/D exceeds 1 for an open

channel (and it pressurizes) Maintenance Correct Total Pollutant Load in Spatial Reports for US units Rainfall Utility now supports 4 digit years for "NWS Post 1980 Variable" format Rainfall Utility now supports "Save Storm Event Summary" - previously a buffer overflow caused a zero

byte file to be created DWF=2 was being incorrectly mapped to DWF Method 5 (instead of 6) for the first node in a network Corrected a problem with power function channels causing a crash at the end of the simulation (results

were not affected) Corrected a problem with project multi-run files sometimes terminating early (on fast processors) Corrected a problem with "Import External Database" dialogs losing focus on Windows 98 OS Corrected a problem with memory over-writes caused by negative heads at weirs (in HDR layer) Corrected a problem with ALL inflows ending when interface file inflows end (in HDR layer) Node names at outfalls were only being compared for uniqueness to 8 characters (in HDR layer) VERSION 8.05 Enhancements Speed improved approx 3-4 times for "Importing External Databases" plus interface is now more

responsive Colorado Urban Hydrograph Procedure (CUHP) now supported Report on network database properties (number of links, nodes etc) now available Added tooltip support for Dialog items Most Recently Used files list (MRU) is now limited by [STATUS][MRU_COUNT] in INI file Allow inflows through weirs Make MINLEN dependent on units Allow dynamic allocation of number of tidal points (previously 50 max) Create Interface files from Hydraulics Layer including WQ concentrations Inlet Rating Curves now allow reverse flow Write hot-start parameters to output file when DEBUG configuration parameter is used The Earth Info format now supports comma separated and vertical slash (|) separated files. There is now a utility available that will let you read flow and rainfall interface files and optionally create

a CSV file.

Maintenance Error in graphing rainfall intensity when "Intensity" option is selected has been fixed. Locate PEST directory correctly Modify the opening banner dialog to correctly display the most recently used files Correctly display the position of the simulation on initial loading of dynamic results Fix resource memory leak in dynamic cross-sectional display. Close all results files correctly after use in Review results Remove font memory leakage on drawing network objects, obvious in very large databases Delete all temporary files Fix network connectivity - create links between only valid nodes Pollutant loads from Interface File were not being reduced by the "Use % Interface File" value &

therefore concentrations were increasing NEW_STORAGE (3D-volumes) was enabled when OLD_DROP configuration parameter was used A beta version 8.0 had 2D volumes as the default Arch was using depth as width SCS and some unit-hydrograph flows are sometimes set to zero if Green-Ampt infiltration is used Ponding Allowed and Sealed options sometimes caused zero flow to occur in a link Flow Adjustment Factor was not being included in reporting volume from inflow sources resulting in

erroneous continuity error Incorrect reporting of freeboard with "ponding allowed" in spatial reports has been corrected In the Rain Utility missing and deleted data for part of a day no longer causes the data for the entire day

to be deleted. Appending rain gauge data from different sources now also works for 2-digit years. An incorrect Julian date being calculated for 1/1/2001 in the graphing routine has been corrected. VERSION 8 Enhancements Support added for large variety of background images Real Time Control Module added Added functionality for faster drawing of larger networks New and easier interface for importing of External Databases Ability to reverse the direction of link connection Added functionality to split conduit into two with intelligent data copying Dynamic Reviews - Speed Enhanced, splitting windows added Added extra checking for unique object names incl. pumps and weirs Allow percentage of flow in interface files Added ability to handle floodway encroachment Added ability to copy entire XP Table range EPA data file - Supports customized Hillsborough County format EPA Data file - various checking and bug fixes Added weir fields to field selection list Max depth now reported for conduits Corrected display for water elevations in dynamic display for all cases Corrected label orientation in dynamic display Node width in dynamic display now user definable Dynamic display - Previous button fixed when simulation spans over a day Make object label drawing optional Added ability to lock node positions Toolbars split for easier placement, status bar collapsed to one Handle background images in Plan section view

Plan section to display current extents only, optimizes speed Names for orifices and weirs added Pipe loss and Pipe Extension factor added Option to save results only on specified intervals Indexing to results file added for faster access to data Changed the dialog toolbar implementation for easier use Changed zooming to allow extra flexibility AutoCAD 2000 Images now supported Max Edges connected to node increased to 20 Dry Weather Flow handled in HDR layer Added ability to save and restore view locations

Maintenance Instabilities caused by expansion/contraction losses in conduits connected to weirs and pumps has

been corrected Correctly export the points for natural sections with floodway encroachment Merge Temporal Variations Global Databases correctly Correctly display d/D variable in Spatial Reports Correctly display field info for Node Dry Weather Flow Variables Fix Review of RNF Node Results when Inlet Capacity Active in HDR Layer Fix Import External DB Variable Selection for Win98/WinME OS Corrected the drawing of labels in the dynamic plan view Correctly display inlet type description on selection Correct export of Encroachment Data when encroachment is inactive Printing fixed when background images loaded Fix scroll bar interface in plan section during play Y axis modified to include all gauged points in review results, line style changed Corrected user defined display in dynamic cross-section Corrected conversion factor for user defined vars Handle the vertexes in Link correctly VERSION 7.56 Enhancements Added optimized object name access in INI file [config] OPT_OBJ_NAME_ACCESS=ON Added user defined default values for variables [Field Defaults] FIELDNAME=Value VERSION 7.55 Enhancements Enhanced handling of inconsistent/corrupt databases Read NWS data that has been modified to include 4-digit years Added defensiveness to storage volume calculations Suppress SYQ & SYT files with NOSYQ and NOSYT keywords Compressed format of interface file locations Fixed formatting problem of intermediate printout Suppress intermediate printout if JNTER or INTER = -1 Report +ve flow in the direction of the arrow rather than towards the lowest end of the link Report link concentrations as value in the previous time-step rather than the average of the US & DS

nodes Allow Hot-start files to read node and link data in any order. Allow an unlimited number of points in Natural Channels (previously 200) Added NEW_ITERATION method that halves time step if model fails to solve after 10% of max number of

iterations Maintenance Update user defined file selection correctly Collate time correctly for user defined files with separate time fields Correct auto selection of Rainfall Interface file type when graphing Check correct date format in rainfall database Handle two year date as per INI file [config] parameter eg.YEAR_XX=2000 to imply year 01 as 2001 Correctly display 4-digit years in Rainfall from user-defined files

Correctly display 4-digit years in STATS block Calculate storage volumes correctly for AE (area-elevation) keyword Report max vel*depth correctly in RES file Report max volume, HGL and Surface Area correctly in RES file Fixed problem causing incorrect flows in Rating Curves attached to Stepwise Linear storage nodes with

hot-start files Eliminated possible zero divide in Groundwater routine. Eliminated possible zero divide for Rating Curve element. Correctly handle AE (Area Elevation) keyword for storage nodes Correctly calculate DS depth of conduit with adverse grade flowing into drop structure Correctly calculate hydraulic properties of Modified Basket Handle shape Correctly calculate hydraulic properties of Rectangular Triangular Bottom shape Correctly calculate hydraulic properties of Rectangular Round Bottom shape Correct the flow splitting of Sanitary layer diversion structures Corrected a possible NaN error in Groundwater hydrology VERSION 7.5 Enhancements Report WQ concentrations in output file when EXTERNAL_XLS is active Storage Node data modified with user control of depth calculation Show total inflow outflow in WQ Review for detention basins Display simulation days in dynamic replay Consolidated all the interface file dialogs into one dialog Handle images for links Enable selection (& centering) of currently selected obj in view Be able to handle PSEUDO fields in tables Added picture filename to variables list On right mouse click restore the cursor to an arrow cursor Handle background pics in plan view Added Most recent files list on opening dialog Maintenance Added vertical walls for natural sections in Cross sectional view Cleanup drawing objects appropriately in long section view Handle date display & check correctly for rainfall database Check pollutant loads for user inflows when polls exist Add XP extension to all XP files handled if no ext exists ensure saved as file does not remain lock when closed Stop plan section replay when network view in focus Display HGL within bounds in long section replay Handle zero length conduit in long section replay Table variable range checking now correct when columns dragged Fixed crash in Export graphics dialog handling (full window) Ensure lsect uses scales properly (max of elev/hgl) Handle large scales and x,y locations appropriately default for natural channel max depth changed to 0.0 fix TAB Key to navigate network fix network updates - so that links are added on creation Fix line selection when the network consists of multiple outlets if background picture file does not exist, handle appropriately

Draw Background pictures to correct real world extents Fix Printing of background pictures to fit to bounds On opening file use correct scale for files with background picts Allow user to pick supported picture file formats Fix Beep on Tabbing in dialogs Save node label position correctly Implement link with vertices in plan view Draw correct legend location in Plan view Update link names in plan section Added more validity checks in plan section Fix general dialog handling for user defined files dialog Added date checking in for user defined files Common look & feel for User defined files dialog Remove field width dependency for spec of free format files (UDF) Handle Dbl Click on listbox as selection Fixed memory leaks in dialog listbox handling Update user text correctly when listbox item changes in dialog Corrected field information on dlist dialogs Display units and defaults correctly for different units Reset Tool ID appropriately on closing database Turn case-sensitive off (default) for searching objects Handle Color command correctly for export to DXF Fixed drawing view for profile plotting VERSION 7.2 Enhancements Added TWO_DIGIT_YEAR keyword to subtract 1900 from year entered in Rain input files (Rain Utility) s Added daily and hourly temporal variation to Sewer Inputs -> Constant Inflow in SAN (Transport) Layer Added daily and hourly temporal variation to Sewer Inputs -> Pollutant Conc. in SAN (Transport) Layer Added daily and hourly temporal variation to Sewer Inputs -> Dry Weather Flow in SAN (Transport)

Layer Added 3 new flow generation methods to Sewer Inputs -> Dry Weather Flow in SAN (Transport) Layer Added 5 new flow units (GPM, MGD etc.) to Sewer Inputs -> Dry Weather Flow in SAN (Transport) Layer Added Dry Weather Flow to HDR (Extran) Layer Added 3 new methods for dry weather flow generation to HDR (Extran) Layer Added daily and hourly temporal variation to HDR (Extran) Layer Added 5 new flow units (GPM, MGD etc.) to HDR (Extran) Layer Obtain the day of the week used in daily temporal variation from the Julian Day of the simulation Allow simultaneous solves Allow entry of Pollutant data in HDR layer Added Rectangular time-varying orifice Allow 16 character pump names Support new Canadian AES rainfall file formats Changed Year 00 to be 2000 (instead of 1941) Lock nodes in place to prevent accidental relocation of objects Close all secondary views when closing main XP file Major changes to account for force main losses in pumps Report elevation and depth for stepwise linear storage nodes Set default maximum number of points in Review Results to 5000 (previous MAXPTS = 500) Review Results now shows Water Elevations at the US & DS ends of the conduit (instead of node elev) Dynamic long-section shows Water Elevations at the US & DS ends of the conduit

Dynamic long-section includes a synchronized dynamic view of the conduit X-section with Water Elevation

Dynamic long-section includes a synchronized dynamic view of the hydrograph with a time line. Dynamic long-section now shows the max HGL of the run immediately upon opening Dynamic cross-section now shows the max depth in the conduit immediately upon opening Dynamic long-section and cross-section views show the maximum value of the simulation (instead of

MAXPTS) Additional Q_TOL=<xx> (where <xx> is % flow value: e.g. Q_TOL=1) has been added to permit faster

convergence Additional H_TOL=<xx> (where <xx> is % head value: e.g. H_TOL=1) has been added to permit faster

convergence Modify pump curve to account for losses in the force main. Remove under-relaxation from pumps. Modify the PBT file format. Modify hot-start algorithm to better model start-up conditions. Added keyword USE_OUT_RC_DEPTH to use depth rather than elevation at a rating curve (Type 5)

outfall Allow user-definition of Time Weighting Factor Modified XPX Import through HYDRO.INI file to allow spaces in file names. Design undersized conduits now limits pipe crown to ground elevation. Display size of dynamic long-section increases when labels are disabled. Vertical scale of dynamic long-section now includes HGL elevations. Plot user-defined cross-sections. Modify tide-gate algorithm to work with rating curves (Use OLD_TIDE_GATE for previous functionality). Remove potential zero divide for Rating Curve Outfalls. Provide backward compatibility with DWF=x options in new dry weather flow routines. Suppress creation of *.syr file (used in Review Results) with NOSYR configuration parameter. Fixed potential problem with multiple rating curve outfalls. Allow tolerance in calculation of Julian date (rounding error in real/integer data types). Initialize rain gauges. Calculate pump on/off and run times based on wet well elevations not conduit flows. Add error message if pump check valve incorrectly defined. Add error message if pump type incorrectly defined. Correct calculation of finishing volume for continuity calculation. Calculate and report ponded volume Calculate volume of storage nodes using volume of frustum. Improve performance by tracking storage nodes. Correct volume calculation in culvert statistics Added OLD_STORAGE configuration parameter to calculate storages as 2D rather than 3D shapes Don't use under-relaxation term for initial surface areas (causes continuity error) Pump performance improvements Calculate correct starting volumes of conduits with elevations below sea level. Remove storage volume calculation fudges. Now the volume is being calculated correctly Interpolate left and Right stations in a natural channel if not at entered stations Calculate low point as lowest point in main channel (removes instabilities) Add OLD_CHANNEL_LP to allow a natural channel low point outside the main channel (which will cause

instabilities or crashes) Calculate overflow volumes from manholes and storage nodes Allow pumps rated by depth in node to use multi-point pump curve. Allow multi-point pump curves to increase or decrease Remove unnecessary output files Added Static Head Pump (Like Rated by depth in node but with on/off elevations)

Reset slot width, time weighting, max iterations, under-relaxation, courant factor, flow adjustment factor and initial smoothing to default values when routing control is turned off.

Maintenance Removed dependency on 1900 for some date formats (Only affects printout - not results) Fixed bug in Inlet Rating Curves Normalize Top Width of User-Defined conduits using max. width rather than width at max. depth Fixed problem with Inlet Rating Curves and long node names Removed references to Extran Fixed error reading Particle Distribution in HDR Layer Fixed error in Profile Plotting causing parallel lines to converge Fixed error in Profile Plotting causing plots to appear postage-stamp size on some printers Enter and Esc keys mapped to OK and Cancel buttons on dialog USE_XYINFO now returns length for ALL conduits Fixed memory allocation error for multiple orifices that caused crash at end of run Disable playing long section when model has not been solved Fixed problem in HDR whereby flow condition could be undefined Fixed problem causing random selection of time-varying orifice data when mixed with normal orifices Correctly calculate the maximum number of rainfall gauges Fixed stack overflow problem for models larger than 3000 nodes Spelling fixes - Qualifier changed to Aquifer and Parameters changed to Parameters Water Quality loads are now reported correctly in Review Results (all layers fixed) Fix User Inflow hydrographs (HDR). Stop setting first point to zero. Fix error whereby Spatial Reports were not always updated. Removed bogus error message "Temporal Variation not Found" for EPA DWF method. Correctly account for total flow between nodes where conduits have adverse grades Correct calculation of crown elevation for horizontal ellipses and arches. Fixed Rating Curve Outfalls and report data Fixed conveyance calculations for left, right and centre components of natural channels Interpolate water elevation in first slice of a natural channel correctly Fixed a Gauged Inflow problem with the date format when used in conjunction with the Introduce Time

Interval flag. Fixed an uninitialization problem in Gauged Inflows. Changed New Scale: caption to New File. Fixed title page when printing plan view of network. Display diameter in dynamic long-section is now consistent. Allow selection of smallest elliptical pipe in list of available sizes. Fixed initialization of user defined minimum junction/conduit depth. Calculate the correct volume for Ponding Allowed Report correct the Water Quality concentrations for metric units in Review Results Fix Tidal Stage/History outfall condition for negative tidal values VERSION 7.1 (JANUARY 2000) Enhancements Menu system overhauled Increased number of Orifices/weirs in Review results Added Copy/Paste/Review to object popup menu Implemented dynamic formatting to allow the format to be dependent on the magnitude of the value File names can now be up to 128 characters long

The model will fill up to the backwater elevation prior to the start of the simulation if it contains an outlet with fixed backwater condition and no tide gate

Allow intermediate printout to be suppressed (Use 0 or -1) Echo Inlet configuration Added USE_US_RC and USE_DS_RC to use the US or DS head to drive the internal rating curve (default is

to use difference in heads) Maintenance Implemented Enter/Esc keys to work on dialog as Ok\Cancel Stop automatic sort on Graphing for Special Internal Rating curve Fixed calculation of volume to correctly report continuity error Sorted standard arch sizes by height to allow use of all available sizes not just first 17 Fixed problem where Time Weighting Factor could sometimes overwrite Routing Method Fixed problem in STATS where formatted variables were written to binary file causing crash VERSION 7 (DECEMBER 1999) Enhancements Check for active link in Runoff Changed the default for the calculation of the discharge coeff. for surcharge weirs - The coefficient is

calculated based on the velocity in the upstream pipe at the point of surcharging Report scour as positive value in the .out file - Makes more sense if negative scour is interpreted as

deposition Maintenance XP Tables fixed XPX progress fixed Closing files with active spatial reports fixed Fixed the problem when using antecedent dry weather days (DWDAYS) in transport [DM] Fixed the problem using the antecedent dry weather days when using start time of zero hours [DM] Fixed the scour/deposition bug - deposit load was being initialized after running the DWDAYS [DM] Fixed the critical particle size method for the removal of pollutants for screen processes Fixed the particle size distribution method for the removal of pollutants for detention processes Fixed an error in the conversion of units in the rating curve washoff method - only effects metric units Fixed a bug which caused an error in the calculation of loads for model with multiple landuses (failed to

generate conversion factors) Fixed the bug which prevented the use the removal equation option for plug flow Fixed a bug in the conversion of units of flow in the removal equation for screen processes Corrected the unit conversion in the calculation for the total pollutant load for the a runoff catchment Fixed a variable initialization problem, which prevented flow being generated in the SCS method Fixed the bug which caused wrong concentration/loads to be calculated for DWF=1 and DWF=3 VERSION 6.32 (NOVEMBER 1999) Enhancements User-defined Report CSV format modified for import into Access/dBase. Display results in your GIS Profile plotting module completely re-written Graphing speed improved 50-70 times Added user-defined scales in graphing module Added user-defined line types and colors in graphing module

Added Hydraulic Brake option to Special Conduits in HDR layer Added editable reports Added spreadsheet interface (copy/paste to excel etc.) Send all messages on Reading RES file to error log Allow simultaneous solving in network environment Improved trapping of "Unknown Error" messages Allow entry of default Configuration Parameters in SWMXP.INI file Added FHWA Weirs with submergence factors (Culvert) Added FHWA Inlet Control Removed limitations on time-step reduction allowing large time step in HDR and giving same results at

any routing time step Added a database connectivity module allow you to open any Access, dBase, FoxPro, Excel or ODBC

compliant database (includes SQL support). Maintenance Changed the assignment of the link pollutant concentrations in the HDR layer from an average of the upstream downstream node concentration to be dependent on flow

direction. Fixed the units for total pollutant load. Fixed "Ponding Allowed". The area of the node wasn't being calculated resulting in unrealistically high

water surface level at the node. If "Ponding Allowed" is enabled at a storage node the depth entered for the stage/storage relationship is measured from the surface.

Removed 0.9 multiplier for average concentrations of non-residential landuse pollutants Fixed the interface file output from the HDR layer. Can now read an HDR interface file back into HDR

layer. Alameda Synder method data export corrected Long Section Plotting instabilities causing program to freeze have been fixed (finally!) Right mouse-click on object on initial load fixed Graphing function fixed for plotting list data "Save As" unlocks current file Hydsys date format based on INI file Fixed Time-Area, Synder, Synder (Alameda)and Rational hydrology methods Fixed the metric units for the EXT_EVAP keyword (evaporation in HDR layer) Fixed Multiple Review Results On "Paste Data" recalculates Spatial Report data only when active (speed up re-draws) Stop re-designing conduits in HDR Layer when design flag is turned off Green-Ampt data was incorrectly reported and Conversion factor was incorrect Fixed problem with Arches, Horizontal Ellipses and Vertical Ellipses not being correctly calculated Arches, Horizontal Ellipses and Vertical Ellipses now work in metric units Added normalized Area, Hydraulic Radius & Top Width for Gothic, Catenary, Semi-elliptic and Semi-

circular conduits (were treated as circular in previous versions) Can now be installed in a directory having a space in the directory name e.g. "c:\Program Files" Speed of loading results from large models has been greatly improved (100+ times). Fixed error in calculation of Top Width for User-defined conduits Fixed error in calculation of flows in closed conduits in Runoff layer VERSION 6.3 (NOVEMBER 1999) Enhancements XP Tables Added ODBC Data Import Supported

Profile Plotting overhauled Graphing speed improved Added Hydraulic Brakes Option to Special Conduits in HDR Send all messages on Reading RES file to error log Inlet Control option added Default Data sets imported on XPX exports Printing enhanced Enabled automatic load of application via hydro.ini Reading of results (RES) file optimized Maintenance Fixed Time area, Synder, Synder (Alameda), Rational hydrology methods Fixed the metric units for the EXT_EVAP keyword (evaporation in EXTRAN) Green Ampt data converted & reported correctly Alameda Synder method data export corrected Long Section Plotting instabilities fixed Right Mouse click on object fixed on initial load Graphing function fixed for plotting list data Reports, CSV format modified for empty data & unit info Save As unlocks current file Hydsys Date format display based on date format in INI file Fixed Multiple Review Results On Paste Data recalc SR data only when active Fix Graphical Encoding restoring and calc suggestions Fix Rainfall user defined file support Long Section Window tab fixed Calibration Bugs (Graphing & Data Commit) fixed Review results - Invalid data objects ignored Gauged Inflow supports all flow units VERSION 6.17 (SEPTEMBER 1999) Enhancements Support multi language interface Maintenance Changed the assignment of the link concentrations from and average of the up/down stream node

concentration to be dependent on flow direction. Fixed the units for Total pollutant load (divided by 1000->kg/s) Fixed Ponding allowed (the area of the node wasn't being calculated) Removed 0.9 multiplier for average concentrations of pollutants non-residential landuse" Fixed the interface file output for HDR layer VERSION 6.13 (MAY 1999) Maintenance Graphical encoding restore bug fix Isolated node delete bug fix Allow zero depth for Open Channels in Design Mode Fixed the water quality algorithm in EXTRAN

Fixed the max volume and max/min concentration vars VERSION 6.1 (JANUARY 1999) Enhancements Tipping bucket rain file added to catchment "RAFTS" configuration parameter added - This parameter allows the user to perform simulations using

the same loss model as XP-RAFTS "BX",(XP-RAFTS calibration) configuration parameter added Flow HDR nodes uses the net inflow into the node when reviewing the results in water quality VERSION 6 (OCTOBER 1998) Enhancements Handle Water quality in Extran Diameter/Roughness added to Conduit Profile dialog Added three new special conduits Support user defined file types to handle gauged inflows Inlet Rating Curves supported Added Redraw button to toolbar Replaced Clark with Alameda Synder (Unit Hydrograph) Added Ku (pit loss) support Display Engine version Extended variable list for selection (eg. Max VD) Highlight all Links or all Nodes in the network Added variable velocity*depth Maintenance Make HDR the default layer Handle Review of Water quality in Extran Plan View - Active Nodes displayed only Use Extents of DXF/DWG file from file Saved object selections loaded from XP Fix handling of DXF/DWG files Check diameter > 0.05m if not designing Handle zero Node name size appropriately Extend range for variable R_SHF Fix Insert/Add for Report items Fix up Report grid display Check object names in review results Fix tracking on moving SR attachment Close dialog boxes VERSION 5.6 (APRIL 1998) Enhancements Application Setting now viewed from XP (Help\License) Maintenance

Project SEN field updated on solve (case insensitive) Child Window management enhanced Handle different file types Plan Section / Long Section / Profile Plotting - Various Bug Fixes EXT simulation end month field renamed to MOS due to conflict Font cards rectified Solve Validity modified - validity variable reset Extended File Type Selection Insert option added to Report setup Defining items for Report generation now prevents duplicate data Pan Tool made consistent as per other action tools Graphical Encoding persistency fixed Graphical Encoding suggest bounds format corrected Handle zero sized link names without Fix polylink draw with vertices for different modes Calibration single/double point handled correctly VERSION 5.5 (MARCH 1998) Enhancements Optionally support all Conduit Types in XPUDD32 Profile Plotting added Maintenance Fix: Link objects size property changing after Solve Font 0 (GSS font number) supported from older databases Modified basket Handle Fixed Warning Messages for incorrect data in Circ Conduit Dialog fixed Default values changed for Job Control Object drawn only when in active screen (logic made local) Pump Name Length checked in dialogs (restricted to 15 chars) Routing Control dialog modified. (tabbing order and NFAIL modified) Title length check handled correctly Pump Speed Factor defaulted to 1.0 VERSION 5.4 (DECEMBER 1997) Enhancements Extran(EXT) referenced as Hydraulics(HDR) Transport(TRN) referenced as Sanitary(SAN) Support CDG File Format Added Variables (Crowns, pipe fall) Help File now user definable Maintenance Calibration process corrected Graphing: Annotation bug fixed:DLL updated Fix object's text size shrinking Update RNF peak node flow after every Solve Dialogs correctly reworded

TEMP directory used Banner dialog sensitive to application Increased precision of user defined inflow hydrograph Editing of DWF Global Database fixed View of Pumps in LSECT fixed Allow Zoom in/out in both directions Handle only 30 chars in Report Entry labels VERSION 5.3 (NOVEMBER 1997) Enhancements UDD Mode Only supported Visual Hydro Startup supported Design Conduits in Extran Maintenance LSECT/PSECT weir data display corrected Drag of network on Browse file selection (Dbl Click) fixed Dot on Upper LH corner of network removed VERSION 5.2 (OCTOBER 1997) Enhancements Plan view Plotting Added (PSECT) Report Generation Revamped to utilize grid controls Dialog Color now user definable About Dialog now shows the User Information Lsect: Configuration added Program to transfer personal configuration created Special Conduit Types Modified Maintenance Handle Loading Files with old pump variables View all Rainfall global database list data Lsect: View Multi-Conduit data Lsect: Add display of pump data and fix view Review Results - Max Flow Values made absolute Pest Interface - Shorten Command line calls Pest Interface - Check template files not generated from Pest dat files Fix import of Runoff EPA dat files. support Export of network to DXF or autoCad Script files Export of User Inflow Data, inc precision for sorting time data to 0.0001 Number of Pictures in INI file made active (default of 10) Solve not permitted if any viewing on current data. Additional checking in Color Selection dialog. Graphical Encoding of Triangular shaped nodes handled. VERSION 5.1 (SEPTEMBER 1997)

Enhancements Long Sectional Dynamic Player revamped - support panning & zooming - alert symbols for flooding - grid control - manual control of time step allowed Display node's bitmap or avi file Sealed Manhole types supported Maintenance Fixed Circular data Reference for Used Pollutants Review Results - Weir and Orifice data now displayed Review Results - Gauged data now handled Review Results - Max Values displayed Panning tool reverts to click tool after used pans VERSION 5.04 (BETA) Enhancements Access Notes on Right Mouse Click Warn on network tidy up Maintenance Review Result, load max number of graphs initially Review Result, fix x axis time scale in Runoff mode Calibration- Handle long directory names for file locations Storage Treatment, new bitmaps and correct co-ord location VERSION 5.03 (BETA) Enhancements Support Notes field on Report Multi-run database save options have overrides Converting pump data more defensive when no pump data exist Possible to delete first item in list Save Project file prompted when exiting (if project setting changed) Support Dbl Click to open files in project Allow opening of LONGSECT and REVIEW RESULTS concurrently VERSION 5.02 (BETA) Enhancements Swmmcom - Interface to the SWMM engine configuration parameters. Parameters now stored in XP

database. Extran - Handle Extran layer separately Maintenance Sentinel - Support old sentinel locks (new DLL needed sc32w.dll) Solve - Handle long directory names for file locations

MAX_NODES, MAX_LINKS, MAX_DBCARDS not user definable VERSION 5.01 (BETA) Enhancements XPX - Import Global Database Names Maintenance Projects - checks if a file in the project is open before attempting to open it Projects - Make the added file the active item after adding Review Results - Move Next/Previous when have more than 2 graphs per page Review Results - Be able to inspect any one object Review Results - Handle all pump diversion on a particular multi-conduit XPX - Import link objects without corrupting the network extent