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Model Status Update February 10, 2016 Agenda Major Reasons for - PowerPoint PPT Presentation

Model Status Update February 10, 2016 Agenda Major Reasons for Delay Latest Model Results Model Calibration Status Water Supply Plan Model Scenarios Next Steps Public Input Major Reasons for Delay Land Surface


  1. Model Status Update February 10, 2016

  2. Agenda  Major Reasons for Delay  Latest Model Results  Model Calibration Status  Water Supply Plan Model Scenarios  Next Steps  Public Input

  3. Major Reasons for Delay  Land Surface Elevation Update  Baseflow Improvements  More Quality Assurance Checks

  4. USGS 3D Elevation Program  Bare earth ground readings  Supersedes NED  derived from the highest quality DEMs available

  5. Baseflow Improvements  Baseflow Update  Post-processing  Ratio approach  Hydrograph Separation  Update with observed river stages  Mostly Georgia rivers

  6. Latest Calibration Statistics Statistical Criterion Proposed Target Percent 2001 2009 Both -5 feet < Mean Residual < 5 feet 80% 76% 78% 80% -2.5 feet < Mean Residual < 2.5 feet 50% 46% 52% 54% Mean Absolute Residual < 5 feet 80% 80% Mean Absolute Residual < 2.5 feet 50% 50% Root Mean Square of Errors < 5 feet 80% 79%

  7. Water Supply Plan Scenarios  2009 reference year  Projected water use  Pumps-off

  8. Model Status  HSPF Models  Calibration of models with ag and non-ag irrigation, RIBS, spray fields, golf courses, and septic field seepage completed  Groundwater Model  Updates and Refinement in progress

  9. Next Steps  PEST Calibration (2001 and 2009)  Technical Team Review  Model Scenarios Upcoming Meetings  Technical Team Meetings  March 09, 2016

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