groundwater 101 groundwater impacts during drought nidis – middle acf meeting – may 18,2010

Download Groundwater 101 Groundwater Impacts During Drought NIDIS – Middle ACF Meeting – May 18,2010

Post on 02-Jan-2016

220 views

Category:

Documents

0 download

Embed Size (px)

TRANSCRIPT

Slide 1

Groundwater 101Groundwater Impacts During DroughtNIDIS Middle ACF Meeting May 18,2010 TopicsIntroduction Questions about groundwater?

Recharge, Surface Water, Groundwater Interactions

Major Georgia Aquifers and Recharge Areas

Surface/groundwater interactions in varying geologic conditions

Groundwater level response to drought recent examples

Conceptual Model of Groundwater Flow and Stream-Aquifer Interaction

Conceptual Model of Groundwater Flow and Stream-Aquifer Interaction

Source: USGS Circular 1139Major Aquifers and Aquifer Systems

Piedmont Aquifer Fracture Flow Dominated

Source: USGS OFR96-483

Middle ACF Cretaceous AquiferSource: USGS OFR96-492Lower ACF Typical Floridan

Source: USGS OFR95-321Georgia Groundwater Recharge Areas

Source: Georgia Geologic SurveyACF Groundwater Recharge Areas

Source: Georgia Geologic SurveyStatewide Groundwater Monitoring Network, GA 2008USGS NetworkAbout 180 continuously monitored wells (29 in real time)About 20 synoptic wells measured bimonthly

EPD is cooperator on 137 wells

Other cooperators include:City of Brunswick and Glynn County; Albany WG&L; City of Lawrenceville; Lee County; Flint River Planning and Policy Center; and, McIntosh County

Groundwater Monitoring NetworkSource: USGS Groundwater WatchOnline Data

Summary Statistics & Maps for Prior Yrs.Source: USGS SIR 2009-5070

Surficial AquiferSource: USGS SIR 2009-5070

UFA: Southwestern AreaSource: USGS SIR 2009-5070

UFA: Southwestern Area (Albany)Source: USGS SIR 2009-5070

Claiborne/Gordon AquiferSource: USGS SIR 2009-5070

Clayton AquiferSource: USGS SIR 2009-5070

Cretaceous Aquifer SystemSource: USGS SIR 2009-5070

Crystalline-rock AquifersSource: USGS SIR 2009-5070ConclusionsAlmost all aquifers affected by drought during recent eventVarious factors contribute to drought response time in aquiferAquifer typeProximity to recharge areasType of recharge and flowpath - flashiness of aquiferCompounding usage/issues (ag, municipal, over-usage, etc.)Water conservation/reuseRecent drought showed rate of decline increased as drought progressed

Thank You - Questions?For More Information Contact:

Joe VolpeGolder Associates Inc.Atlanta, GAjvolpe@golder.comwww.golder.com