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Overview of Model Construction and Calibration

Overview of Model Construction and Calibration. Richard McDonald and Jonathan Nelson, USGS Geomorphology and Sediment Transport Laboratory Golden, CO. Department of the Interior U.S. Geological Survey. Overview. Computational model requirements for flow modeling

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Overview of Model Construction and Calibration

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  1. Overview of Model Construction and Calibration Richard McDonald and Jonathan Nelson, USGS Geomorphology and Sediment Transport Laboratory Golden, CO Department of the Interior U.S. Geological Survey

  2. Overview • Computational model requirements for flow modeling • Current model data collection • Model construction and calibration • Some initial results

  3. Model requirements • Grid • Grid attributes • Topography • Roughness • Grain-size • Bed forms • Vegetation • Other larger scales • Grid Resolution • Boundary Conditions • Downstream – stage • Upstream - discharge

  4. Model requirements • Grid • Grid attributes • Topography • Roughness • Grain-size • Bed forms • Vegetation • Other larger scales • Grid Resolution • Boundary Conditions • Downstream – stage • Upstream - discharge

  5. Model requirements • Grid • Grid attributes • Topography • Roughness • Grain-size • Bed forms • Vegetation • Other larger scales • Grid Resolution • Boundary Conditions • Downstream – stage • Upstream - discharge

  6. Model requirements Discharge • Grid • Grid attributes • Topography • Roughness • Grain-size • Bed forms • Vegetation • Other larger scales • Grid Resolution • Boundary Conditions • Downstream – stage • Upstream - discharge Stage Elevation

  7. Current Model Data Collection • LiDAR Topography

  8. Current Model Data Collection • LiDAR Topography • Bathymetry

  9. Current Model Data Collection • LiDAR Topography • Bathymetry • LiDAR Vegetation

  10. Current Model Data Collection • LiDAR Topography • Bathymetry • LiDAR Vegetation • Measured Water-Surface Elevations

  11. Current Model Data Collection • LiDAR Topography • Bathymetry • LiDAR Vegetation • Measured Water-Surface Elevations • Synoptic Water-Surface Elevations

  12. Model Construction and Calibration • Map measured values to the grid • Assign boundary conditions • Calibrate

  13. Model Construction and Calibration

  14. Results

  15. Model Construction… • Retrieve synoptic water-level data following potential high flows (Mid-April) • Incorporate vegetation roughness • Calibrate model to the collected range of flows • Identify any remaining data gaps

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