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Automated Geospatial Watershed Assessment (AGWA): A GIS-Based Hydrologic Modeling Tool for Watershed Assessment & Analysis

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Abstract:

The Automated Geospatial Watershed Assessment tool (AGWA) is a GIS interface jointly developed by the USDA Agricultural Research Service, the U.S. Environmental Protection Agency, the University of Arizona, and the University of Wyoming to automate the parameterization and execution of the Soil Water Assessment Tool (SWAT) and KINEmatic Runoff and EROSion (KINEROS2) hydrologic models. The application of these two models allows AGWA to conduct hydrologic modeling and watershed assessments at multiple temporal and spatial scales. AGWA’s current outputs are runoff (volumes and peaks) and sediment yield, plus nitrogen and phosphorus with the SWAT model. AGWA uses commonly available GIS data layers to fully parameterize, execute, and visualize results from both models. Through an intuitive interface the user selects an outlet from which AGWA delineates and discretizes the watershed using a Digital Elevation Model (DEM) based on the individual model requirements. The watershed model elements are then intersected with soils and land cover data layers to derive the requisite model input parameters. The chosen model is then executed, and the results are imported back into AGWA for visualization. This allows managers to identify potential problem areas where additional monitoring can be undertaken or mitigation activities can be focused. AGWA also has tools to apply an array of best management practices. There are currently two versions of AGWA available; AGWA 1.5 for users with Environmental Systems Research Institute (ESRI) ArcView 3.x and AGWA 2.0 for users with ESRI ArcGIS 9.x. For more information on AGWA visit website located at: http://www.tucson.ars.ag.gov/agwa/ or http://www.epa.gov/nerlesd1/land-sci/agwa/index.htm.
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Association:
Name: SOIL AND WATER CONSERVATION SOCIETY
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http://www.swcs.org


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URL: http://citation.allacademic.com/meta/p235628_index.html
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MLA Citation:

Guertin, D. Phillip., Goodrich, Dave., Kepner, William., Semmens, Darius., Hernandez, Mariano., Burns, Shea., Cate, Averill., Levick, Lainie. and Miller, Scott. "Automated Geospatial Watershed Assessment (AGWA): A GIS-Based Hydrologic Modeling Tool for Watershed Assessment & Analysis" Paper presented at the annual meeting of the SOIL AND WATER CONSERVATION SOCIETY, TBA, Tucson, Arizona, Jul 26, 2008 <Not Available>. 2013-12-14 <http://citation.allacademic.com/meta/p235628_index.html>

APA Citation:

Guertin, D. , Goodrich, D. , Kepner, W. G., Semmens, D. J., Hernandez, M. , Burns, S. , Cate, A. , Levick, L. and Miller, S. N. , 2008-07-26 "Automated Geospatial Watershed Assessment (AGWA): A GIS-Based Hydrologic Modeling Tool for Watershed Assessment & Analysis" Paper presented at the annual meeting of the SOIL AND WATER CONSERVATION SOCIETY, TBA, Tucson, Arizona <Not Available>. 2013-12-14 from http://citation.allacademic.com/meta/p235628_index.html

Publication Type: Poster Presentation
Abstract: The Automated Geospatial Watershed Assessment tool (AGWA) is a GIS interface jointly developed by the USDA Agricultural Research Service, the U.S. Environmental Protection Agency, the University of Arizona, and the University of Wyoming to automate the parameterization and execution of the Soil Water Assessment Tool (SWAT) and KINEmatic Runoff and EROSion (KINEROS2) hydrologic models. The application of these two models allows AGWA to conduct hydrologic modeling and watershed assessments at multiple temporal and spatial scales. AGWA’s current outputs are runoff (volumes and peaks) and sediment yield, plus nitrogen and phosphorus with the SWAT model. AGWA uses commonly available GIS data layers to fully parameterize, execute, and visualize results from both models. Through an intuitive interface the user selects an outlet from which AGWA delineates and discretizes the watershed using a Digital Elevation Model (DEM) based on the individual model requirements. The watershed model elements are then intersected with soils and land cover data layers to derive the requisite model input parameters. The chosen model is then executed, and the results are imported back into AGWA for visualization. This allows managers to identify potential problem areas where additional monitoring can be undertaken or mitigation activities can be focused. AGWA also has tools to apply an array of best management practices. There are currently two versions of AGWA available; AGWA 1.5 for users with Environmental Systems Research Institute (ESRI) ArcView 3.x and AGWA 2.0 for users with ESRI ArcGIS 9.x. For more information on AGWA visit website located at: http://www.tucson.ars.ag.gov/agwa/ or http://www.epa.gov/nerlesd1/land-sci/agwa/index.htm.

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