Automated Geospatial Watershed Assessment Tool (AGWA)

D. Phillip Guertin, David C. Goodrich, I. Shea Burns, Yoganand Korgaonkar, Jane Barlow, Brain Scott Sheppard, Carl Unkrich, William Kepner

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations


The Automated Geospatial Watershed Assessment tool (AGWA, see: or 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 a suite of hydrologic and erosion models (RHEM, KINEROS2 and SWAT). Through an intuitive interface the user selects an outlet from which AGWA delineates anddiscretizes the watershed using a Digital Elevation Model (DEM). The watershed modelelements are then intersected with terrain, soils, and land cover data layers to derive the requisitemodel input parameters. The chosen model is then run, and the results are imported backinto AGWA for graphical display. AGWA can difference results from multiple simulations to examine relative change over a variety of input scenarios (e.g. climate/storm change, land cover change, implementation of BMPs, present conditions and alternative futures).This allows managers to identify potential problem areas where additional monitoring can be undertaken or mitigation activities can be focused. Application examples of AGWA will be presented including post-fire assessment, implementation of rangeland BMPs, green infrastructure, and future change analysis. Versions of AGWA are available for ESRI ArcView 3.x and ArcGIS 9.x and 10.x.

Original languageEnglish (US)
Title of host publicationWatershed Management 2015
Subtitle of host publicationPower of the Watershed - Proceedings of the Watershed Management Symposium 2015
EditorsGlenn E. Moglen
PublisherAmerican Society of Civil Engineers (ASCE)
Number of pages11
ISBN (Electronic)9780784479322
StatePublished - 2015
Event11th Watershed Management Symposium 2015: Power of the Watershed - Reston, United States
Duration: Aug 5 2015Aug 7 2015

Publication series

NameProceedings of the Watershed Management Symposium


Other11th Watershed Management Symposium 2015: Power of the Watershed
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Water Science and Technology


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