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Groundwater Modeling Initiatives (1999)

EAA Groundwater Modeling Initiatives Presented to: National Academy of Sciences National Research Council Committee Presented by: Geary M. Schindel Chief Technical Officer Aquifer Sciences – Program Manager Edwards Aquifer Authority. Groundwater Modeling Initiatives (1999).

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Groundwater Modeling Initiatives (1999)

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  1. EAA Groundwater Modeling InitiativesPresented to:National Academy of Sciences National Research Council CommitteePresented by:Geary M. SchindelChief Technical OfficerAquifer Sciences – Program ManagerEdwards Aquifer Authority

  2. Groundwater Modeling Initiatives (1999) • < 1999 Edwards Aquifer models produced by US Geological Survey (USGS), Edwards Aquifer Research Data Center (EARDC), and Texas Water Development Board (TWBD) (GWSIM IV) • Optimization Technical Studies Report (May 1999) • Model development one of 17 research initiatives

  3. Groundwater Modeling Initiatives (1999) • USGS and TBEG selected as contractor • EAA, Department of Defense (DOD), San Antonio Water Systems (SAWS), and USGS were funding partners • Formed Groundwater Modeling Advisory Panel (GMAP) to provide oversight to contractors • MODFLOW groundwater modeling software selected

  4. Groundwater Modeling Initiatives (1999 – 2004) • GMAP composed of representatives from EAA, SAWS, TWDB, Southwest Research Institute (SWRI), DOD, two outside karst scientists and four consultants • Oversight and guidance to USGS and Texas Bureau Economic Geology (BEG) • How to model convergent/turbulent flow system using a laminar flow model • No good numerical models for karst • Recharge, dry cells, springs, faults, etc.

  5. Groundwater Modeling Initiatives (1999 – 2004) • Model to be used for: • Demand Management/Critical Period Management Issues • Enhanced recharge evaluations • Evaluation of aquifer cap issues • HCP • ASR • Spring Augmentation • Recharge and Recirculation

  6. Groundwater Modeling Initiatives (2004) • USGS MODFLOW model completed in 2004. • Management modules

  7. Groundwater Modeling Initiatives (2011) • 2011 Groundwater Model Initiative • Improve confidence in modeling efforts • Provide additional research tool • Improve model resolutions • MODFLOW • Verification and post audit process • Finite Element initiative

  8. Groundwater Modeling Initiatives (2012) • Finite Element initiative • March 2012 • SWRI Contractor Selected • Groundwater Model Review Panel formed • Martin Saar • NevenKresic • Bill Hutchison • James Beach (appointed by SAWS)

  9. Groundwater Modeling Initiatives (2011 – 2014) • MODFLOW model updates initiated • Data Set updates (2001 – 2009) • Model Verification process • Post Audit

  10. Groundwater Modeling Initiatives (2014) • Two current EAA modeling initiatives • MODFLOW Post Audit Updates • Finite Element Model • Both to be completed by December 2014 • EAA Modeling efforts are a “continuous improvement process”

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