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Title: AGWA DESIGN DOCUMENTATION: MIGRATING TO ARCGIS AND THE INTERNET 1755

Author
item CATE, A. - UNIVERSITY OF ARIZONA
item SEMMENS, D. - U.S. EPA
item BURNS, I. - UNIVERSITY OF ARIZONA
item Goodrich, David - Dave
item KEPNER, W. - U.S. EPA

Submitted to: EPA-ARS Technical Report
Publication Type: Other
Publication Acceptance Date: 4/15/2005
Publication Date: 4/30/2005
Citation: Cate, A.J., Semmens, D.J., Burns, I.S., Goodrich, D.C., Kepner, W.G. 2005. Agwa design documentation: Migrating to arcgis and the internet. EPA/600/R-05/056 and ARS/181027 Technical Reports, 77 p.

Interpretive Summary: 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 spatially distrubuted models that can compute runoff and erosion over a range of watershed sizes and lengths of time. The extensive data requirements and the difficult task of building model input files, however, have long represented an obstacle to the timely and cost-effective use of such complex models by resource managers. In addition, to evaluate mangment practices and their impacts on water quality, land and resource managers need to describe and simulate the impacts of land use and best management conservation practices on watershed response. The USDA-ARS Southwest Watershed Research Center, in cooperation with the U.S. EPA-Office of Research and Development and the University of Arizona, have developed the Automated Geospatial Watershed Assessment (AGWA) Geographic Information System (GIS) tool to facilitate the distributed hydrological modeling process. This document serves as a design to move the capability of the AGWA modeling tool to an internet based environment. the new tool is deemed DotAGWA.

Technical Abstract: Planning and assesment in land and water-resource management are evolving simple local scales toward complex, spatially explicit regional ones. Such problems have to be addressed with distributed models. The extensive data requirements and the difficult task of building input parameter files, however, have long represented an obstacle to the timely and costeffective use of such complex models. In addition, to evaluate management practices and their impacts on water quality, the need exists to enable land and resource managers to describe and simulate the impacts of land use and best management practices (BMPs) on watershed response. The USDA-ARS Southwest Watershed Research Center, in cooperation with the U.S. EPA Office of Research and Development and the University of Arizona, have developed the Automated Geospatial Watershed Assessment (AGWA) GIS tool http://www.tucson.ars.ag.gov/agwa) to facilitate the distributed hydrological modeling process. AGWA is currently packaged as an extension for the ESRI ArcView 3.x GIS software. This document serves as a technical design to move to AGWA 2.0/DotAGWA versions. AGWA 2.0 is the conversion of AGWA 1.x to an ArcGIS based application. The ArcGIS version of AGWA will use one of the Microsoft .Net programming languages. DotAGWA will be constructed to make most of the features and functions in AGWA 2.0 available through a web-based interface. DotAGWA will be the web-based version of AGWA.