Aquifer Recharge, Storage, and Recovery - Southwest Hydrology ...

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Well Problem IdentificationInvestigative Water Consulting and Diagnostic Laboratory• Biological and Mineral Fouling• Production Loss• Taste & Odor Issues• Water Quality• Corrosion• ASR SystemsWater Systems Engineering, Inc.phone: 785.242.6166 and 785.242.5853URL: http://www.h2osystems.comR & D (continued)Springs area of Riverside County,California. The two agencies initiated thestudy in 1996 when it was first believedsubsidence was occurring there. USGSscientists used Global Positioning System(GPS) surveying and a satellite mappingprocess known as interferometric syntheticaperture radar (InSAR) to document dropsin elevation between 1996 and 2005.At all of the GPS benchmarks, somesubsidence occurred between 1996 and2005. At three benchmarks, the drop wasless than an inch, while at three otherssubsidence was about one foot. At onebenchmark, a one-foot drop in landsurfaceelevation happened from 2000to 2005.“The subsidence rates in many areas havemore than doubled since 2000,” saidMichelle Sneed, USGS scientist and leadauthor of the study. “All the subsidingareas are near sites where groundwaterlevels declined between 1996 and 2005,and some water levels in 2005 were at thelowest levels in their recorded histories.”The research, which has cost about$790,000 since 1995, has been fundedprimarily by USGS and CVWD, with theCity of Palm Desert contributing $17,000.Since the 1920s, groundwater has been amajor source of agricultural, municipal,and domestic supply in the CoachellaValley, resulting in significant groundwaterpumping that has contributed to waterleveldeclines of as much as 100 feet. Theheavy groundwater use, in turn, has ledto subsidence.The Conservation Currentis now exclusively online.Regional water conservation news provided quarterlyby the New Mexico Water Conservation AllianceDon’t miss an issue – sign up online. It’s quick and easy...Just visit http://wrri.nmsu.edu/wrdis/nmwca/alliance.htmland click “conservation current”In 2001, CVWD adopted a comprehensiveWater Management Plan (WMP) toaddress the groundwater overdraftproblem. The plan takes a three-tieredapproach to groundwater management:increasing the imported water supply,promoting and assisting conservationefforts, and providing existing groundwaterusers an alternative source of water.CVWD planned and prioritized nearly50 programs and projects for the38 • May/June 2008 • Southwest Hydrology
WMP. Current efforts aimed at keepinggroundwater levels stable includeconstruction of the $70 million Mid-Valley Pipeline to enable as manyas 50 golf courses to use a blend ofrecycled water and Colorado Riverwater in lieu of groundwater, and a $40million groundwater recharge facility.The 41-page report, “Detection and Measurement ofLand Subsidence Using Global Positioning SystemSurveying and Interferometric Synthetic ApertureRadar, Coachella Valley, California, 1996-2005,” isavailable at pubs.usgs.gov/sir/2007/5251/pdf/sir_2007-5251.pdf.increase in extreme precipitationfrequency, at 61 percent. “Extreme”precipitation was defined relative to thelocal climate at each weather station asany storm with a 24-hour precipitationtotal equal or larger than the least of the59 largest one-day precipitation totalsover the 59-year period of analysis.In the Southwest, where total annualprecipitation is projected to decline,extreme downpours may punctuate longerperiods of relative dryness, increasingthe risk of drought. The increase since1948 in frequency of storms withextreme precipitation ranges from 26to 32 percent for Arizona, California,continued on next pageGlobal Warming Linked toExtreme PrecipitationA recent report published by EnvironmentAmerica found that global warmingis likely to cause an increase in theintensity of precipitation eventsregardless of whether the total annualrainfall increases or decreases.Researchers evaluated trends in thefrequency of storms with extreme levels ofrainfall or snowfall across the contiguousUnited States over the last 60 years. Theyanalyzed daily precipitation records from1948 through 2006 at more than 3,000weather stations, and examined patterns inthe timing of heavy precipitation relativeto the local climate at each. They foundthat storms with extreme amounts of rainor snowfall are happening more often.According to the report, global warmingincreases the intensity of precipitationin two key ways. First, by increasingthe temperature of the land and theoceans, global warming causes water toevaporate faster. Second, by increasingair temperature, global warming enablesthe atmosphere to hold more water vapor.These factors combine to make cloudsricher with moisture, making heavydownpours or snowstorms more likely.The researchers found that storms withextreme precipitation have increasedin frequency by 24 percent across thecontinental United States since 1948.New England experienced the largestMay/June 2008 • Southwest Hydrology • 39
Page 1 and 2: T h e R e s o u r c e f o r S e m i
Page 3 and 4: Levelogger Proven to beWorth its We
Page 5 and 6: [SOUND PRINCIPLE NO. 33]Irrigation
Page 7 and 8: When you work for the environment,
Page 9 and 10: May/June 2008 • Southwest Hydrolo
Page 11 and 12: and accrues the credits that entitl
Page 13 and 14: New Mexico and Texas Burythe Hatche
Page 16 and 17: An ASR PrimerCortney C. Brand - R.W
Page 18 and 19: Hydrogeology and ASR DesignGreg Bus
Page 20 and 21: ASR and the “Big Picture”Cat Sh
Page 22 and 23: ASR from a Legal PerspectiveDenise
Page 24 and 25: Water Quality Changes During Subsur
Page 26 and 27: What About the “R” in ASR?Betsy
Page 28 and 29: Water Spreading in the DesertMario
Page 30 and 31: ASR in Roseville:Navigating Water Q
Page 32 and 33: continued from previous page• a r
Page 34 and 35: R & DDire Predictions for ColoradoR
Page 36 and 37: R & D (continued)groundwater is not
Page 40 and 41: R & D (continued)Colorado, Nevada,
Page 42 and 43: T H E C A L E N D A RMAY 2008May 6-
Page 44: Treading Water?We Can Help. . .Logs

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