Groundwater Management Area (GMA) Process and Implementations
Post on 02-Jan-2016
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Groundwater Management Groundwater Management Area (GMA) ProcessArea (GMA) Process
and Implementationsand Implementations
TWCA Mid-Year ConferenceTWCA Mid-Year Conference
Galveston, TexasGalveston, Texas
Gary Westbrook, General Manager Post Oak Savannah GCD
Preliminary Desired Future Preliminary Desired Future ConditionsConditions
Groundwater Management Area 12Groundwater Management Area 12
Primarily Based on Water Levels (WL)Primarily Based on Water Levels (WL) Definitive and Direct Measurement of Groundwater (GW)Definitive and Direct Measurement of Groundwater (GW) Reliable and consistentReliable and consistent WL used to calibrate GAMsWL used to calibrate GAMs Key GW issues can be addressed through analysis of WLKey GW issues can be addressed through analysis of WL
Protection of Existing Users (WL compared to well screens)Protection of Existing Users (WL compared to well screens) Change in Aquifer Storage (change in WL x aquifer storativity)Change in Aquifer Storage (change in WL x aquifer storativity) GW-SW interaction (WL compared to bottom of stream)GW-SW interaction (WL compared to bottom of stream) Flow Direction and Amount (application of Darcy’s Law)Flow Direction and Amount (application of Darcy’s Law)
Post Oak Savannah GCDPost Oak Savannah GCDPriorities and ConcernsPriorities and Concerns
Needs of well owners and land owners within Needs of well owners and land owners within GMA 12GMA 12
Improvement of Groundwater Availability Model Improvement of Groundwater Availability Model for GMA 12for GMA 12 Include more available data for calibrationInclude more available data for calibration Improve SW-GW interaction, Recharge, & FaultsImprove SW-GW interaction, Recharge, & Faults
Focus on DFCsFocus on DFCs Define function and purpose of DFCsDefine function and purpose of DFCs Use MAG as guideline, but manage based on DFCUse MAG as guideline, but manage based on DFC
Provides actual evidence of impactsProvides actual evidence of impacts Monitoring Network and ProgramMonitoring Network and Program
Post Oak Savannah Post Oak Savannah GCDGCD
Website: Website: www.posgcd.org Regularly scheduled Board meetings on second Regularly scheduled Board meetings on second
Tuesdays of month @ District office @ 5:30 pmTuesdays of month @ District office @ 5:30 pm Office hours Monday - Friday 8:00 am to 4:00 Office hours Monday - Friday 8:00 am to 4:00
pmpm Phone: 512-455-9900 Fax: 512-455-9909Phone: 512-455-9900 Fax: 512-455-9909 Email: posgcd@tconline.netEmail: posgcd@tconline.net
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