1. BASINS 3.0 and SWAT: A Study in the Austin-Travis Lakes Watershed
Kristina Schneider
Kristi Shaw
March 29, 2001

2. Texas Regulatory Criteria
30 TAC 307.7
Contact Recreation (E. coli not to exceed 126 per 100 ml)

3. 1989 Fecal Coliform Levels Exceeding 126 per 100 ml

4. 1994 Fecal Coliform Levels Exceeding 126 per 100 ml

5. 1998 TMDL List of Impaired and Threatened Water Bodies

6. TMDL 303(d) Listed Waters

7. BASINS- ASSESS Water Quality (1984)

8. 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)

9. ASSESS- BOD Comparisons from 1979 and 1997

10. 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

11. Watershed Delineation
NHD
Digitized Outlet
Burned-in Stream
RF1

12. Created Basin and Subbasins

13. Soil Type Setup Statsgo Data Clip Statsgo the CU boundary
Appropriate Soil types are selected