SWAT Model Recalibration - Tetratech-ffx.com

Beaver Lake SWAT Modeling Baseline Analysis February 12, 20091 Existing ConditionsTetra Tech received GIS files of modeling subwatersheds, 2006 land cover, and SSURGO soils data forthe Beaver Lake watershed from the University of Arkansas. The ArcView SWAT 2005 GIS interfacewas previously used to intersect the three coverages (subwatersheds, land cover, and soils) to generatehydrologic response units (HRUs). The interface also generates the input files needed to run the SWATmodel.1.1 REPORTING WATERSHEDSThe SWAT modeling input and output data are discussed in this memo for eight reporting watersheds inthe Beaver Lake watershed. Figure 1 shows the areas comprising each reporting watershed. Note that theBeaver Lake reporting watershed is comprised of the area draining directly to the lake or one of itssmaller tributaries.2