BASINS 3.0 and SWAT: A Study in the Austin-Travis Lakes Watershed Kristina Schneider Kristi Shaw March 29, 2001
Texas Regulatory Criteria 30 TAC 307.7 Contact Recreation (E. coli not to exceed 126 per 100 ml)
1989 Fecal Coliform Levels Exceeding 126 per 100 ml
1994 Fecal Coliform Levels Exceeding 126 per 100 ml
1998 TMDL List of Impaired and Threatened Water Bodies
TMDL 303(d) Listed Waters
BASINS- ASSESS Water Quality (1984)
Water Quality Standards to Monitor for Urban Development (30 TAC 216) Total Suspended Solids Total Nitrogen Total Phosphorous Chemical Oxygen Demand Biochemical Oxygen Demand (BOD)
ASSESS- BOD Comparisons from 1979 and 1997
Procedure for modeling with SWAT Delineate the watershed for modeling Define land use and soil data grids Determine the distribution of HRU’s based on land use and soil data Define rainfall, temperature, and weather data Write SWAT input files Edit input files if necessary Setup and run SWAT View SWAT Output
Watershed Delineation NHD Digitized Outlet Burned-in Stream RF1
Created Basin and Subbasins
Soil Type Setup Statsgo Data Clip Statsgo the CU boundary Appropriate Soil types are selected