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SWATMOD-Prep: A Graphical User Interface for Preparing

Coupled SWAT-MODFLOW simulations

Ryan BaileyHendrick Rathjens

Katrin BiegerSeonggyu Park

Xiaolu Wei

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://or.water.usgs.gov/proj/Sprague/report/section_3.html&ei=gz13VaTZEYz7sAX8h4CYDQ&bvm=bv.95039771,d.b2w&psig=AFQjCNEiLgeBiqYTxuz3tIZXh-7-RL2eaQ&ust=1433964264153020
http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://or.water.usgs.gov/proj/Sprague/report/section_3.html&ei=gz13VaTZEYz7sAX8h4CYDQ&bvm=bv.95039771,d.b2w&psig=AFQjCNEiLgeBiqYTxuz3tIZXh-7-RL2eaQ&ust=1433964264153020
http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=5A92Vev3CozvtQWI2oGICw&bvm=bv.95039771,d.aWw&psig=AFQjCNHEhlW2pxfIAENj8jg5Zy2MjxBNRg&ust=1433887068545217
http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=5A92Vev3CozvtQWI2oGICw&bvm=bv.95039771,d.aWw&psig=AFQjCNHEhlW2pxfIAENj8jg5Zy2MjxBNRg&ust=1433887068545217

Motivation Facilitate Construction of SWAT-MODFLOW Simulations

Method Create a Graphical User Interface that automates the linkage between SWAT and MODFLOW

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://or.water.usgs.gov/proj/Sprague/report/section_3.html&ei=gz13VaTZEYz7sAX8h4CYDQ&bvm=bv.95039771,d.b2w&psig=AFQjCNEiLgeBiqYTxuz3tIZXh-7-RL2eaQ&ust=1433964264153020
http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://or.water.usgs.gov/proj/Sprague/report/section_3.html&ei=gz13VaTZEYz7sAX8h4CYDQ&bvm=bv.95039771,d.b2w&psig=AFQjCNEiLgeBiqYTxuz3tIZXh-7-RL2eaQ&ust=1433964264153020

Outline • Brief overview of SWAT-MODFLOW

• Development of SWATMOD-Prep

• Application to Little River Watershed, Georgia

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://or.water.usgs.gov/proj/Sprague/report/section_3.html&ei=gz13VaTZEYz7sAX8h4CYDQ&bvm=bv.95039771,d.b2w&psig=AFQjCNEiLgeBiqYTxuz3tIZXh-7-RL2eaQ&ust=1433964264153020
http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://or.water.usgs.gov/proj/Sprague/report/section_3.html&ei=gz13VaTZEYz7sAX8h4CYDQ&bvm=bv.95039771,d.b2w&psig=AFQjCNEiLgeBiqYTxuz3tIZXh-7-RL2eaQ&ust=1433964264153020

Development of

SWATMOD-Prep

SWATMOD-Prep

Overview of SWAT-

MODFLOW

Application to Little River Watershed

SWAT-MODFLOWLinking Models:

MODFLOW

- Groundwater model- 3D finite difference

+

- More accurate groundwater flow dynamics

- Spatially-variable groundwater flow rates

- Spatially-variable groundwater discharge to streams

- Solute transport in aquifer system

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363
http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363
http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://blogs.esri.com/esri/arcgis/tag/soil/feed/&ei=IxR3VZ3mAYTesAXYlIGQBQ&bvm=bv.95039771,d.aWw&psig=AFQjCNEd1vzlTe8KX20aGERDWPHe1Jr5vA&ust=1433953691954734
http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://blogs.esri.com/esri/arcgis/tag/soil/feed/&ei=IxR3VZ3mAYTesAXYlIGQBQ&bvm=bv.95039771,d.aWw&psig=AFQjCNEd1vzlTe8KX20aGERDWPHe1Jr5vA&ust=1433953691954734

Development of

SWATMOD-Prep

SWATMOD-Prep

Overview of SWAT-

MODFLOW

Application to Little River Watershed

SWAT-MODFLOWLinking Models:

Volatilization canal

PumpingWell

Vadose ZonePercolation, Stream stage

Solute transport

Root Zone Processes

Groundwater discharge Groundwater flow

Uptake

ET

Confining Layer

Plant Growth

Seepage

SWATMODFLOW

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363
http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363

Development of

SWATMOD-Prep

SWATMOD-Prep

Overview of SWAT-

MODFLOW

Application to Little River Watershed

SWAT-MODFLOWLinking Procedure:

SWAT MODFLOW

HRUs Recharge Grid Cells

Groundwater Discharge

River Cells

Interactions Occur on Daily Basis (Default) or as specified by user

Sub-basins

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363
http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363

Development of

SWATMOD-Prep

SWATMOD-Prep

Overview of SWAT-

MODFLOW

Application to Little River Watershed

SWAT-MODFLOW

HRUs Recharge Grid Cells

Groundwater Discharge

River Cells

1. HRUs Split into Disaggregated HRUs (DHRUs)

2. Intersect DHRUs with MODFLOW Grid

3. Intersect Sub-basins with River Cells “Linking” Text Files

SWAT Files + MODFLOW Files + Linking Files + SWAT_MODFLOW.exe

GIS Processing

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363
http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363

Outline • Brief overview of SWAT-MODFLOW

• Development of SWATMOD-Prep

• Application to Little River Watershed, Georgia

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://or.water.usgs.gov/proj/Sprague/report/section_3.html&ei=gz13VaTZEYz7sAX8h4CYDQ&bvm=bv.95039771,d.b2w&psig=AFQjCNEiLgeBiqYTxuz3tIZXh-7-RL2eaQ&ust=1433964264153020
http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://or.water.usgs.gov/proj/Sprague/report/section_3.html&ei=gz13VaTZEYz7sAX8h4CYDQ&bvm=bv.95039771,d.b2w&psig=AFQjCNEiLgeBiqYTxuz3tIZXh-7-RL2eaQ&ust=1433964264153020

Development of

SWATMOD-Prep

SWATMOD-Prep

Overview of SWAT-

MODFLOW

Application to Little River Watershed

SWATMOD-PrepSWATMOD-Prep

Graphical User Interface (GUI) to create necessary linkage and input files for SWAT-MODFLOW simulations

Also an option to include RT3D (reactive nitrate transport in groundwater)

Created using Python, NumPy, and SciPy

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363
http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363

Development of

SWATMOD-Prep

SWATMOD-Prep

Overview of SWAT-

MODFLOW

Application to Little River Watershed

SWATMOD-Prep

Path to SWAT model

Subbasin Shape fileHRU Shape fileRiver Shape file

Specify raster cell size (to convert shape files)Specify cell size for the MODFLOW gridDisaggregate HRUs

Intersect MODFLOW Grid with DHRUsIdentify River Cells in MODFLOW gridWrite linkage files!

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363
http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363

Development of

SWATMOD-Prep

SWATMOD-Prep

Overview of SWAT-

MODFLOW

Application to Little River Watershed

SWATMOD-Prep

MODFLOW tab

• Aquifer thickness

• Hydraulic conductivity

• Storage parameters

• River bed material conductivity

• Initial Conditions

Options:

1. Use existing MODFLOW model

2. Create 1-layer MODFLOW model

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363
http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363

Development of

SWATMOD-Prep

SWATMOD-Prep

Overview of SWAT-

MODFLOW

Application to Little River Watershed

SWATMOD-Prep

RT3D tab

• Porosity

• Dispersivity

• Denitrificaction

• Write RT3D input files

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363
http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363

Development of

SWATMOD-Prep

SWATMOD-Prep

Overview of SWAT-

MODFLOW

Application to Little River Watershed

SWATMOD-Prep

Simulation tab

• Output file options

• Frequency of calls to MODFLOW

• Run Simulation

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363
http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363

Development of

SWATMOD-Prep

SWATMOD-Prep

Overview of SWAT-

MODFLOW

Application to Little River Watershed

SWATMOD-PrepTUTORIAL

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363
http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363

Outline • Brief overview of SWAT-MODFLOW

• Development of SWATMOD-Prep

• Application to Little River Watershed, Georgia

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://or.water.usgs.gov/proj/Sprague/report/section_3.html&ei=gz13VaTZEYz7sAX8h4CYDQ&bvm=bv.95039771,d.b2w&psig=AFQjCNEiLgeBiqYTxuz3tIZXh-7-RL2eaQ&ust=1433964264153020
http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://or.water.usgs.gov/proj/Sprague/report/section_3.html&ei=gz13VaTZEYz7sAX8h4CYDQ&bvm=bv.95039771,d.b2w&psig=AFQjCNEiLgeBiqYTxuz3tIZXh-7-RL2eaQ&ust=1433964264153020

Development of

SWATMOD-Prep

SWATMOD-Prep

Overview of SWAT-

MODFLOW

Application to Little River Watershed

SWAT-MODFLOWLittle River Watershed, Georgia

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363
http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363

Development of

SWATMOD-Prep

SWATMOD-Prep

Overview of SWAT-

MODFLOW

Application to Little River Watershed

SWAT-MODFLOWLittle River Watershed, GeorgiaResults

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363
http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363

Development of

SWATMOD-Prep

SWATMOD-Prep

Overview of SWAT-

MODFLOW

Application to Little River Watershed

Summary

• SWATMOD-Prep: GUI to create SWAT-MODFLOW simulations

• Tutorial: How to use SWATMOD-Prep

• Will be available on the SWAT website by October 2016 (http://swat.tamu.edu/software/swat-modflow/)

• Or: contact Ryan Bailey (rtbailey@engr.colostate.edu)

Funding

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363
http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=http://source.colostate.edu/frank-named-csu-system-chancellor/&ei=2xF3VeyBL4mHsAXJq4PQDA&bvm=bv.95039771,d.b2w&psig=AFQjCNGj8ynx7wNIDOb_zuWzDjeQDdRJ1Q&ust=1433952907348363
http://swat.tamu.edu/software/swat-modflow/
http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRxqFQoTCNHQ8f_Yg8YCFYU3rAodxdQA6w&url=http://www.aamu.edu/academics/alns/bes/centers/pages/reu-china-2013.aspx&ei=VG13VdHWFYXvsAXFqYPYDg&bvm=bv.95039771,d.aWw&psig=AFQjCNGTUTeT-aUOKjBzBCEGN9SosnErpQ&ust=1433976514457026
http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRxqFQoTCNHQ8f_Yg8YCFYU3rAodxdQA6w&url=http://www.aamu.edu/academics/alns/bes/centers/pages/reu-china-2013.aspx&ei=VG13VdHWFYXvsAXFqYPYDg&bvm=bv.95039771,d.aWw&psig=AFQjCNGTUTeT-aUOKjBzBCEGN9SosnErpQ&ust=1433976514457026

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