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Improvements from Senate Bill 2: Instream Flow requirements

Improvements from Senate Bill 2: Instream Flow requirements. Requires TPWD, TWDB, TCEQ to develop procedures for defining instream flow requirements Implemented on priority study regions by 2010 Based on fish habitat analysis. Trinity. Brazos. Sabine. Guadalupe. San Antonio.

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Improvements from Senate Bill 2: Instream Flow requirements

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  1. Improvements from Senate Bill 2:Instream Flow requirements • Requires TPWD, TWDB, TCEQ to develop procedures for defining instream flow requirements • Implemented on priority study regions by 2010 • Based on fish habitat analysis Trinity Brazos Sabine Guadalupe San Antonio Priority Study Regions

  2. Criterion Depth & velocity Species groups Habitat Hydrodynamic Habitat SMS/RMA2 Data Collection and some statistics Model Model Descriptions ArcGIS Instream Flow DecisionMaking Process Flowchart

  3. Study Area (Guadalupe river near Seguin, TX) 1/2 meter Digital Ortho Photography

  4. Depth Sounder (Echo Sounder) The electronic depth sounder operates in a similar way to radar It sends out an electronic pulse which echoes back from the bed. The echo is timed electronically and transposed into a reading of the depth of water.

  5. Acoustic Doppler Current Profiler Provides full profiles of water current speed and direction in the ocean, rivers, and lakes. Also used for discharge, scour and river bed topography.

  6. Measurement System GPS Antenna Computer and power setup Depth Sounder

  7. Channel Bed Soundings

  8. Bathymetry from Side-Scanning Sonar Channel demo

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