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KICK OFF MEETING JUNE 14, 2007

WITHLACOCHEE MASTER REGIONALWATER SUPPLY PLANNING AND IMPLEMENTATION PROGRAM (PHASE VII): NORTHERN DISTRICT MODELING. KICK OFF MEETING JUNE 14, 2007. The Mega and the Northern District Models. Northern District Model. Developed by WRA Team member HGL for SWFWMD

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KICK OFF MEETING JUNE 14, 2007

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  1. WITHLACOCHEE MASTER REGIONALWATER SUPPLY PLANNING AND IMPLEMENTATION PROGRAM (PHASE VII):NORTHERN DISTRICT MODELING KICK OFF MEETING JUNE 14, 2007

  2. The Mega and the Northern District Models KickOff Meeting

  3. Northern District Model • Developed by WRA Team member HGL for SWFWMD • Incorporates most up-to-date and complete hydrogeologic and hydrologic data, e.g. NEXRAD rainfall data, and extent of surficial aquifer • Surficial aquifer is much better defined and is represented as an explicit layer in the NDWRAP Model; critical for assessing water use impacts on MFLs. • Enhanced resolution compared to the Sepulveda (“Mega”) model (smaller horizontal and vertical grid sizes). • The model was calibrated using steady-state data in 1995 and transient data between 1996 and 2002. KickOff Meeting

  4. NORTHERN DISTRICT MODELING: Sequence of Tasks • Request pumping data and precipitation data in 2005 from the SWFWMD • Update the ND model with the new pumping and precipitation data • Verify the model with 2005 potentiometric data • Transfer all the pumping increment information (increment between 2005 and 2025) from the Mega model to the ND model • Develop a change map: a map that shows changes in groundwater level between 2025 and 2005 base on the estimated 2025 groundwater demands • Identify proxy MFLs through the WRWSA area to constrain the ND model • Water bodies for which proxy MFLs are required are listed in the following slides. These water bodies were extracted from the SWFWMD priority list. KickOff Meeting

  5. Water bodies with proxy MFLs to be included as part of the analysis • Weeki Wachee River System • Weeki Wachee Spring • Blind Springs • Chassahowitzka River System • Chassahowitzka Spring • Rainbow Springs KickOff Meeting

  6. Water bodies with proxy MFLs to be included as part of the analysis (Ctd.) • Homosassa River System • Homosassa Spring • Upper Withlacoochee River System • Middle Withlacoochee River System • Lower Withlacoochee River System • Crystal River System KickOff Meeting

  7. Water bodies with proxy MFLs to be included as part of the analysis (Ctd.) Potential water bodies outside the WRWSA area: • Anclote River System • Pithlachascotee River System (Note: These two river systems may be impacted by pumping in Hernando County.) KickOff Meeting

  8. NORTHERN DISTRICT MODELING: Sequence of Tasks • Identify areas of surplus and deficit groundwater availability using the proxy MFLs. Associated amounts of surplus/deficit will also be estimated. • Prepare Technical Memorandum No. 1 which describes: • Modeling • Proxy MFLs • Areas with potential surplus or deficit of groundwater resources, and amounts of surplus or deficit KickOff Meeting

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