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Texas Groundwater Summit
               Austin, TX
           August 29, 2012
The GCD Panel:
Drought Management by GCDs


     Kirk Holland, P.G., General Manager
Barton Springs/Edwards Aquifer Conservation District



                  August 29, 2012
The BSEACD Context:
 Small, karst aquifers prone to regular,
 multi-year drought cycles
 Public water supply is principal
 groundwater use, in burgeoning growth
 area
 Major aquifer is already beyond its
 Extreme Drought MAG
Other Types of Droughts Are Not
Necessarily Groundwater Drought
 Aquifer water-level conditions may not reflect
 meteorological or agricultural droughts
 Consider drought acceleration potential in
 looking at water demand during actual
 groundwater drought
 Need to base drought management on actual
 aquifer water-level measurements and related
 drought-stage triggers.
Aquifer Characteristics Define
Drought Management Program
 Aquifer response to drought is dynamic;
 look at it as a system using real data
 Consider response times (to changes in
 pumping) as well as amounts of
 inputs/outputs, relative to triggers
 Strategies must be tailored to aquifer and
 regional conditions
“You can’t manage what you
don’t measure.”
 Meter actual groundwater use for non-
 exempt wells in some fashion
 Reporting frequency depends on what is
 required for effective management response
 Consider higher frequency reporting as
 drought deepens
Alignment of Regulatory
Requirements and GW Drought
 Reference DFCs to at least DOR = greater defensibility
 Well permitting is key:
   Build-in mandatory drought contingency requirements
   Renew permits with a drought-relevant frequency
   Use water balance for permit term; exclude truly
   speculative use
   Consider junior/senior permits once drought MAG is
   reached
 Carrots (conservation/compliance credits and
 rebates) and sticks (enforceable and significant fines)
The Take-away Points
1. Differentiate Groundwater Drought
   From Other Types of Drought
2. Tailor Drought Management to Aquifer
   Characteristics
3. Measure Actual Use On Relevant Time
   Scale
4. Integrate Drought Management Into
   The Regulatory Program
Contact Info:

              W F (Kirk) Holland, P.G.
             General Manager and COO
Barton Springs/Edwards Aquifer Conservation District
               kholland@bseacd.org
                   (512) 282-8441

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GCD Panel - Drought Response, Kirk Holland

  • 1. Texas Groundwater Summit Austin, TX August 29, 2012
  • 2. The GCD Panel: Drought Management by GCDs Kirk Holland, P.G., General Manager Barton Springs/Edwards Aquifer Conservation District August 29, 2012
  • 3. The BSEACD Context: Small, karst aquifers prone to regular, multi-year drought cycles Public water supply is principal groundwater use, in burgeoning growth area Major aquifer is already beyond its Extreme Drought MAG
  • 4. Other Types of Droughts Are Not Necessarily Groundwater Drought Aquifer water-level conditions may not reflect meteorological or agricultural droughts Consider drought acceleration potential in looking at water demand during actual groundwater drought Need to base drought management on actual aquifer water-level measurements and related drought-stage triggers.
  • 5. Aquifer Characteristics Define Drought Management Program Aquifer response to drought is dynamic; look at it as a system using real data Consider response times (to changes in pumping) as well as amounts of inputs/outputs, relative to triggers Strategies must be tailored to aquifer and regional conditions
  • 6. “You can’t manage what you don’t measure.” Meter actual groundwater use for non- exempt wells in some fashion Reporting frequency depends on what is required for effective management response Consider higher frequency reporting as drought deepens
  • 7. Alignment of Regulatory Requirements and GW Drought Reference DFCs to at least DOR = greater defensibility Well permitting is key: Build-in mandatory drought contingency requirements Renew permits with a drought-relevant frequency Use water balance for permit term; exclude truly speculative use Consider junior/senior permits once drought MAG is reached Carrots (conservation/compliance credits and rebates) and sticks (enforceable and significant fines)
  • 8. The Take-away Points 1. Differentiate Groundwater Drought From Other Types of Drought 2. Tailor Drought Management to Aquifer Characteristics 3. Measure Actual Use On Relevant Time Scale 4. Integrate Drought Management Into The Regulatory Program
  • 9. Contact Info: W F (Kirk) Holland, P.G. General Manager and COO Barton Springs/Edwards Aquifer Conservation District kholland@bseacd.org (512) 282-8441