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GIS-Based Hydrologic Modeling: the Automated Geospatial Watershed Assessment Tool

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Abstract:Planning and assessment in land and water resource management are evolving from simple, local scale problems toward complex, spatially explicit regional ones. Such problems have to be
addressed with distributed models that can compute runoff and erosion at different spatial and temporal scales The extensive data requirements and the difficult task of building input
parameter files, however, have long represented an obstacle to the timely and cost-effective use of such complex models by resource managers. The USDA-ARS Southwest Watershed Research Center, in cooperation with the U.S. EPA Office of Research and Development, has developed a GIS tool to facilitate this process. A geographic information system(GIS) provides the framework within which spatially distributed data are collected and used to prepare model input files and evaluate model results. The Automated Geospatial Watershed Assessment tool
(AGWA) uses widely available standardized spatial datasets that can be obtained via the internet, The data are used to develop input parameter files for KINEROS and SWAT, two watershed runoff and erosion models that operate at different spatial and temporal scales. AGWA automates the process of transforming digital data into simulation results and provides a visualization tool to help the user interpret results. The (use) of AGWA in joint hydrologic and ecological investigations has been demonstrated on such diverse landscapes as southeastern
Arizona, southern Nevada, central Colorado, and upstate New York.
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Citation:Miller, S. N., D. J. Semmens, R. C. Miller, M. Hernandez, D. C. Goodrich, W. P. Miller, W. G. Kepner, and D. W. Ebert. GIS-Based Hydrologic Modeling: the Automated Geospatial Watershed Assessment Tool.2nd Federal Interagency Hyddrologic Modeling Conference, Las Vegas, NV, July 28-August 1, 2002, EPA/600/A-03/073 (NTIS PB2003-106499), 2003.
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Contact: Chris Siebert - (702) 798-2234 or siebert.christopher@epa.gov
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Division: Environmental Sciences Division
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Branch: Landscape Ecology Branch
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Product Type: Sympos/Conf
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Presented: 08/06/2003
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Related Entries:
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Bullet Item Development of Landscape Indicators for Use in Regional Ecological Risk Assessments
spacer Relationship Reason:   A Project of the Product
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Last Updated on Monday, October 22, 2007
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