Transcript Groundwater Conservation Districts (GCD) Powers and

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