The Survey Data Entry & Retrieval Application (SDERA)

The authoritative “single source” for District vertical dataA web based, publicly accessible survey database.

**** Vertical Data Conversion Application (VDCA)

Provides elevation conversionsBy: Mike Horan Sr., PSM, PMP

Lead Project Manager - Vertical Datum UpgradeSouth Florida Water Management District

Everglades Restoration and Capital ProjectsSurvey Section561-682-2642

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Introducing SDERA, the SFWMD's new survey database!

Starting in October 2010, Surveyors contracted by the South Florida Water Management District (District) will be required to enter certain data directly into SDERA, a publicly accessible, relational survey database. Users can search District survey records using multiple query strings; SDERA’s Audit Trail safeguards data integrity by maintaining a secure, permanent record of changes.We hope you’ll find SDERA to be an asset in your arsenal of surveying tools. Our customers have provided valuable feedback! Next year we are planning enhancements to SDERA’s functionality. Please check back for updates. Thanks-

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Introducing SDERA, the SFWMD's new survey database!

SDERA’s requirements mandate a single, authoritative source for the District’s vertical data. In the next few years, District IT systems will integrate with the Vertical Datum Conversion Application (VDCA) and SDERA to accomplish this goal.When a vertical conversion is requested, VDCA queries SDERA to obtain the highest quality vertical offset solution for a given horizontal location. If a high precision vertical survey is within a specified proximity, that vertical offset will be used by VDCA. If no survey exists, VDCA will extrapolating a vertical offset from a existing vertical grid. As SDERA is populated with high order vertical surveys, VDCA has more data to consider for a vertical datum conversion. The next slide shows how that will work.

We’re happy to introduce SDERA, our new survey data base!

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Survey Data Entry And

Retrieval Application(SDERA)

Vertical Datum Conversion Application

(VDCA)

SCADA

DBHYDRO

DCVP/ADAS

ODSS

20+ Others

Water Resources

Operations & Maintenance

Legal

InformationTechnology

Government & Public Affairs

CERP

Everglades Restoration

Provides Offsets to

Surveyors! Enter Survey Information

NAVD88 Available

NAVD88 Compliant

Single Source of District’s Survey Data

FY 2010 and beyond

APPLICATION DEVELOPMENT

COMPLETE FY09

INTEGRATEDISTRICTSYSTEMS

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Want to find SDERA? Visit www.sfwmd.gov

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Scientists & Engineers

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Vertical Datum Home Page link to SDERA and VDCA

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SDERA’s Two Main View Screens – SDERA and MAP

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SDERA’s WIDE View

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USER TABS: Login, View, Search, Links, Help

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LOGIN – New User

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New User - Creates an Account

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Surveys by Structure/Well

Surveys by Project

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Control Point Search

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Control Point Search - Be sure the “Record State” is set to “Accepted”

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Returned Control Point – Note the hot link to the NGS data sheet.

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NGS data sheet.

Supplemental Information

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SFWMD Links

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SDERA’s Help Menu

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Zoom In/Out, Pan, Extents, Coordinates, Control Points, Surveys,Zoom by Area, Map Information, Layers, Clear & Help

Layers &Search

*A layer must be checked “on” to return search results21

Search S/T/R, X/Y, Lat/Long, Feature, Proximity

Warning:

Search by latitude/longitude" requires the user to enter a location in decimal degrees. You can tell that wasn’t done by a surveyor.It will be fixed.

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This template is for adding a survey. Fields with an arrow on the right have pull down data, other fields are completed by the surveyor.

After completing all data fields, click submit. Data is routed to the designated District Data Manager

After login, “Submissions” is visible. Management & Admin are reserved.

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This template is for adding a control point.

Notice that all fields other than “Designation” are grayed out until the point is validated.

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Control Point Entry:

First, SDERA will verify that the control point doesn’t already exist. If it doesn’t you’re allowed to continue.

These fields should look familiar because they’re going to be populated with data you already provide!

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This template is for adding supplemental files. Most of the fields are pull down. Click on the select files tab to navigate to the files you wish to upload.

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FYI: Data Manager’s view of submitted data records.

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FYI: Data Manager’s view of a submitted data record. Note the reject and accept tabs on the bottom.

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FYI: Data Managers view of the Audit Trail

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Identifying Point Data using the Control Point Icon

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Double click on the Control Point Icon.

Survey Point Info Icon

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Double click on the point Prime ID to bring up control point data for point N513

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Data for control Point N513 is displayed.

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Double click the “Coordinate” icon and pick any point on the map to display coordinates. Click Lat/Long to display (*it’s in decimal degrees). Click “Offset” to see vertical datum offset and how the conversion was made. In this case the VERTCON grid was used.

Vertical DatumConversion Application

(VDCA)

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Vertical Datum Conversion Tools Point Block Time Series

Example: LIDAR (Light Detection and Ranging)

( 4.5 Million Points processed in 5.6 hours )

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Enter X/Y or lat / long. *Beware – currently the lat/long have to be entered in decimal degrees! The input format will be changed to accept degrees minutes and seconds in a future release.

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Choose the datum conversion method

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Conversion output

QUESTIONS ?QUESTIONS ?

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