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Watershed Parameters for Water Rights in the Trinity River Basin

Watershed Parameters for Water Rights in the Trinity River Basin. Melissa Figurski CE 394K. Project Goal. Determine Watershed Parameters for Water Rights in the Trinity Basin Upstream Area Average Upstream Precipitation Average Upstream Curve Number. Purpose. Water Availability Modeling

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Watershed Parameters for Water Rights in the Trinity River Basin

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  1. Watershed Parameters for Water Rights in the Trinity River Basin Melissa Figurski CE 394K

  2. Project Goal • Determine Watershed Parameters for Water Rights in the Trinity Basin • Upstream Area • Average Upstream Precipitation • Average Upstream Curve Number

  3. Purpose • Water Availability Modeling • State Mandated • Resource Planning and Management • TNRCC, CRWR, and Contractor

  4. Data Requirements • 30-meter Digital Elevation Model (DEM) • Stream Network • Water Right Locations • Curve Number Grid • Precipitation Grid

  5. Previous Method • Wrap1117.apr Developed by Brad Hudgens • 6 Basins completed with Wrap1117

  6. Trinity River Basin

  7. Why not use the old method? • 237 million grid cells • 11-day processing • 1649 water rights

  8. New Idea • Separate the Trinity into smaller watersheds (HUCs) • Use Wrap1117 on individual HUCs • Account for upstream contributions with ArcInfo 8

  9. Procedure

  10. Delineate HUC Watersheds • Burn stream network into DEM • Locate outlet points for each HUC • Buffer each HUC • Clip burned DEM to buffered HUC • Run ArcInfo workstation ‘fill’, ‘flowaccumulation’, and ‘watershed’ commands on each buffered HUC

  11. Outlet Points • Locate Outlet Points for each HUC

  12. 5000 meter buffer Clipped DEM Buffer HUCs and Clip DEM

  13. ArcInfo Workstation Functions • Fill burned DEM • Determine flow direction and flow accumulation • Delineate HUC watershed Flow Direction + Outlet Cells = Watershed

  14. Completed Delineation

  15. Delineation Problems

  16. Select water rights and stream network in HUC 12030102 Gather Data

  17. WRAP1117 • Flow direction stream network

  18. WRAP1117 • Snap Points to Stream Network

  19. Average Precipitation Average Curve Number WRAP1117

  20. WRAP1117 • Create Network Schematic

  21. WRAP1117 • Delineate Incremental Watersheds

  22. WRAP1117 • Read Water Right Parameters

  23. Future Work

  24. ArcInfo 8 • Create network

  25. ArcInfo 8 • Set flags at inlet and outlet • ‘Find Path’ between outlets • Export water rights on path • Add upstream data in table

  26. Summary • New method needed • Segment basin into HUC units • Run Wrap1117 on individual HUCs • Use ArcInfo 8 to account for upstream data

  27. Questions?

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