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Update on the HEC-RAS Reservoir Transport Simulation

Explore the latest updates on HEC-RAS reservoir transport simulation, focusing on sediment input data, model geometry, hydraulics, and sediment transport in Susquehanna River reservoirs. Learn about particle size transport analysis using Conowingo samples and boundary data from USGS transects. Addressing missing data, Lidar elevation discrepancies, and progress in sediment transport simulation with calibration and model geometry enhancements. Stay informed on the completion timeline for the HEC-RAS model.

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Update on the HEC-RAS Reservoir Transport Simulation

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  1. Update on the HEC-RAS Reservoir Transport Simulation Mike Langland and Ed Koerkle 03/30/2012

  2. Topics • Sediment Input Data • Model Geometry and Hydraulics • Model Sediment Transport

  3. Susquehanna River Reservoirs

  4. Transport Curves

  5. Particle Size Transport (Conowingo) 391 samples % sand/fines 16 samples % sand/silt/clay Missing data ?

  6. Model Geometry and Hydraulics

  7. Boundary and USGS transect data Marietta Gaging Site Conestoga River Safe Harbor Dam Holdwood Dam Pequea Creek Muddy Run Broad Creek PA MD Conowingo Dam

  8. With FEMA adds Marietta Gaging Site Conestoga River Safe Harbor Dam Holdwood Dam Pequea Creek Muddy Run Broad Creek PA MD Conowingo Dam

  9. Add Lidar

  10. Elevation Discrepancies

  11. Sediment Transport Simulation • Progress limited • Calibrate one “average” flow year (no scour) and a high flow event (Sept 2011) • Bed sediment particle size distribution and shear stress

  12. Summary • Model Geometry and Hydraulics nearly complete • Issue with GeoRAS resolved (max # of transect points) • On schedule to have HEC-RAS model completed by June, 2012.

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