1 / 25

Hydrologic Study of the Sandies & Elm Watershed

Hydrologic Study of the Sandies & Elm Watershed. Jessica L. Watts. Sandies River. Elm River. Research Project Background. TCEQ TMDL Study Bacteria Low Dissolved Oxygen. Semester Project Overview. Objective:

kamali
Télécharger la présentation

Hydrologic Study of the Sandies & Elm Watershed

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Hydrologic Studyof the Sandies & Elm Watershed Jessica L. Watts

  2. Sandies River Elm River Research Project Background • TCEQ TMDL Study • Bacteria • Low Dissolved Oxygen

  3. Semester Project Overview Objective: To create an HSPF data model that simulates the gauging station flow for the years 2000 through 2004. Tasks: • Arc Hydro Watershed Delineation • Arc Hydro To HSPF • HSPF Forcing Data • Interpolation Comparison • HSPF Output Calibration

  4. Arc HydroWatershed Delineation

  5. Arc Hydro Input Requirements • Digital Elevation Model • Seamless ( http://seamless.usgs.gov/ ) • United States • 1/3” National Elevation Dataset • NHD Flowlines • USGS – National Hydrography Dataset ( http://nhd.usgs.gov/data.html ) • High Resolution

  6. Arc Hydro Subbasin Delineation Arc Hydro • Terrain Preprocessing • Watershed Processing • 35 Subbasins • (limited by HSPF)

  7. Arc Hydro to HSPF

  8. Arc Hydro to HSPF • Tools and Models have been built to convert information from Arc Hydro into the HSPF format. Arc Hydro To HSPF Models and Tools Created by Nate Johnson

  9. Subbasin Delineation • From Arc Hydro • Subwatershed • With unique HydroID for each area

  10. Drainage Lines • From Arc Hydro • Drainage Lines • With DrainID of DrainageLine = HydroID of Subbasin

  11. Land Use Shapefile • 1992 Land Use • Downloaded from Seamless • Used ArcGIS Tools • To Convert from Raster to a Polygon • To Clip Polygon into shape of Watershed

  12. Land Use Tables • Defines how each type of land use is treated in HSPF

  13. HSPF

  14. Forcing Data

  15. Precipitation Data • NCDC Daily Precipitation Data • Years 2000 through 2004

  16. Evaporation Data • NCDC Daily Evaporation Data • Years 2000 through 2004 Canyon Dam SeaWorld SAT Coleto Creek Res. Choke Canyon DAM Beeville 5 NE

  17. NEXRAD, August 27, 2001 Interpolation Comparison

  18. Data Interpolation Choices • Kriging • NEXRAD

  19. Data Interpolation Choices • IDW • NEXRAD When averaged over catchments there is a 61% average difference.

  20. Data Interpolation Choices • Spline - Regular • NEXRAD Negative Rain !! When averaged over catchments there is a 35% average difference.

  21. NCDC Monthly Data Arc GIS Zonal Statistics HSPF WDM File HSPF Forcing Data

  22. HSPFOutput & Calibration

  23. HSPF Output

  24. HSPF Output • Future Work • Calibration • Calibration • Calibration

  25. Thanks… Nate Johnson Jon Goodall Gil Strassberg Carrie Gibson And Dr. David Maidment Questions ?

More Related