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 Elevation Update Baseflow Improvements More Quality Assurance Checks
USGS 3D Elevation Program Bare earth ground readings Supersedes NED derived from the highest quality DEMs available
Baseflow Improvements Baseflow Update Post-processing Ratio approach Hydrograph Separation Update with observed river stages Mostly Georgia rivers
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%
Water Supply Plan Scenarios 2009 reference year Projected water use Pumps-off
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
Next Steps PEST Calibration (2001 and 2009) Technical Team Review Model Scenarios Upcoming Meetings Technical Team Meetings March 09, 2016
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