Groundwater storage—The Western Experience

Jones, Jeanine

doi:10.1002/j.1551-8833.2003.tb10293.x

Cited by 3 publications

(1 citation statement)

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“…Managed aquifer recharge, including the storage of potable water in accessible aquifers as an alternative to surface reservoir storage, is a valuable water resource management tool for water purveyors (Bouwer, 2002;Jones, 2003;Pyle, 1988). Nonetheless, managed recharge entails the introduction of a water composition that is often out of thermodynamic equilibrium with local aquifer mineral assemblages, potentially resulting in mineral precipitation/dissolution reactions, redox reactions, and trace element mobilization that can exert detrimental effects on water quality as well as local aquifer permeability.…”

Section: Introductionmentioning

confidence: 99%

California GAMA Special Study: Ion exchange and trace element surface complexation reactions associated with applied recharge of low-TDS water in the San Joaquin Valley, California

McNab¹,

Singleton²,

Moran³

et al. 2010

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Executive SummaryUnder the Special Studies portion of the State Water Resources Control Board's Groundwater Ambient Monitoring and Assessment (GAMA) program, water quality topics of statewide relevance are addressed through focused research studies carried out in collaboration with Lawrence Livermore National Laboratory. The study described here addresses changes in groundwater quality associated with managed aquifer recharge of high quality water.Managed aquifer recharge, including the storage of potable water in accessible aquifers as an alternative to surface reservoir storage, is a valuable water resource management tool for water purveyors. Managed recharge usually entails the infiltration of water that is out of chemical equilibrium with local aquifer minerals, potentially resulting in mineral reactions, redox reactions, and trace element mobilization that can affect water quality and local aquifer permeability. Improvements to recharge water quality (e.g., remineralization of organic material, removal of organic compounds, denitrification) have been observed with recharge of agricultural return water and wastewater. In contrast, water quality changes associated with managed recharge of high quality surface water, e.g. Sierra Nevada runoff containing very low total dissolved solids (TDS), have received less attention.The objective of this study was to understand the geochemical interactions of high quality, imported recharge water with underlying aquifer materials associated with a four-year-old managed aquifer recharge project underway near Stockton, California, U.S.A. in California's San Joaquin Valley. The study employed advanced analytical methods to delineate mixing of ambient groundwater and recharge water in the subsurface, including both an introduced dissolved gas tracer and groundwater age dating (He method). This information, used in concert with extensive major ion, trace element, and isotopic data, allowed development of a geochemical model that provides a framework for interpreting the geochemical response of the local groundwater system to recharge of imported water.The study site, operated by Stockton East Water District (SEWD), consists of ponds adjacent to agricultural fields and a surface water treatment plant. Approximately 7000 acre-ft of imported water from New Melones and New Hogan reservoirs are recharged annually. Wells adjacent to the pond had tracer detections 6 to 11 days after the peak tracer detection in the pond, while nested monitoring wells downgradient had detections after 17 days. Production wells screened below semi-confining units had no tracer detections and had groundwater ages indicating that produced water recharged at least several decades ago.Overall groundwater quality in the area is very good, with <17 mg/L nitrate (as NO 3 -), total organic carbon < 1 mg/L, and a low frequency of detection of low level volatile organic compounds. Major element chemistry of recharged water is controlled by 1) mixing between low TDS recharge water and higher TDS ambient groundwat...

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Section: Introductionmentioning

confidence: 99%

California GAMA Special Study: Ion exchange and trace element surface complexation reactions associated with applied recharge of low-TDS water in the San Joaquin Valley, California

McNab¹,

Singleton²,

Moran³

et al. 2010

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Ion exchange and trace element surface complexation reactions associated with applied recharge of low-TDS water in the San Joaquin Valley, California

McNab

Singleton

Moran

et al. 2009

Applied Geochemistry

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Modeling Conjunctive Use Operations and Farm Decisions with Two-Stage Stochastic Quadratic Programming

Marques

Lund

Howitt

2010

J. Water Resour. Plann. Manage.

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This paper applies two-stage stochastic quadratic programming to optimize conjunctive use operations of groundwater pumping and artificial recharge with farmer's expected revenue and cropping decisions. The two-stage programming approach allows modeling of water and permanent crop production decisions, with recourse for uncertain conditions of hydrology, annual crops, and irrigation technology decisions. Results indicate potential gains in expected net benefits and reduction in income variability from conjunctive use, with increase in high value permanent crops along with more efficient irrigation technology.

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Groundwater storage—The Western Experience

Cited by 3 publications

References 0 publications

California GAMA Special Study: Ion exchange and trace element surface complexation reactions associated with applied recharge of low-TDS water in the San Joaquin Valley, California

California GAMA Special Study: Ion exchange and trace element surface complexation reactions associated with applied recharge of low-TDS water in the San Joaquin Valley, California

Ion exchange and trace element surface complexation reactions associated with applied recharge of low-TDS water in the San Joaquin Valley, California

Modeling Conjunctive Use Operations and Farm Decisions with Two-Stage Stochastic Quadratic Programming

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