Simulating Watershed Erosion in BMGR Using AGWA Model

The watershed erosion model for the Barry M. Goldwater Range (BMGR)-West was developed by using the automated geospatial watershed assessment (AGWA) modeling tool. AGWA is a GIS-based hydrologic modeling tool that uses commonly available GIS data layers to fully parameterize, execute, and spatially visualize results for several watershed runoff and erosion models, including SWAT2005 and KINEROS2. SWAT2005 is an annualized erosion assessment model, while KINEROS2 is an event-based hydrology and erosion model that simulates sediment yield from each storm event. The range consists of three major watersheds, and each watershed was further delineated into many sub-watersheds. Precipitation, soil, and landuse data were obtained from the NOAA, STATSGO, and USGS public databases, respectively. The results from the SWAT2005 and KINEROS2 models showed the erosion and deposition depth at each basin depends on basin slope, elevation, soil type, and landuse.