Record Display for the EPA National Library Catalog


Main Title GIS-Based Hydrologic Modeling: The Automated Geospatial Watershed Assessment Tool.
Author Miller, S. N. ; Semmens, D. J. ; Miller, R. C. ; Hernandez, M. ; Goodrich, D. C. ;
CORP Author Agricultural Research Service, Tucson, AZ. Southwest Watershed Research Center.;Environmental Protection Agency, Las Vegas, NV. Office of Research and Development.
Publisher 2003
Year Published 2003
Stock Number PB2003-106499
Additional Subjects Geographic information systems ; Hydrology ; Watersheds ; Natural resources management ; Land use ; Runoff ; Erosion ; Spatial distrubtion ; Data collection ; Computerized simulation ; AGWA(Automated Geospatial Watershed Assessment)
Library Call Number Additional Info Location Last
NTIS  PB2003-106499 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation CD-ROM
Planning and assessment in land and water resource management are evolving toward complex, spatially explicit regional assessments. These 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 been 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 Landscape Ecology Branch, has developed a geographic information system (GIS) tool to facilitate this process. A 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 KINEROS2 and SWAT, two watershed runoff and erosion simulation models that operate at different spatial and temporal scales. AGWA automates the process of transforming digital data into simulation model results and provides a visualization tool to help the user interpret results.