By Charles A. Kaehler and Kenneth Belitz
U.S. GEOLOGICAL SURVEY
Water-Resources Investigations Report 03-4039
Sacramento, California 2003
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As a component in the management of water resources in the Menifee, Winchester, and Perris-South subbasins in Riverside County, California, ponds are operated by the Eastern Municipal Water District for the temporary storage of reclaimed water that is produced by several regional water-reclamation facilities. A primary goal of this study was to evaluate the potential for using various ground-water constituents or characteristics as tracers of reclaimed water that has infiltrated from the storage ponds into the ground water in the three subbasins. A secondary goal was to estimate the degree to which the infiltrated reclaimed water has mixed with the native ground water. The evaluation of potential tracers and the estimation of mixing focused on data from wells located relatively close to the ponds.
Introduction
Background
Purpose and Scope
Approach
Methods of Sample Collection and Analysis
Quality Control
Description of the Study Area
Acknowledgments
Inorganic and Organic Tracers
Inorganic Tracers
Inorganic-Constituent Mixing Models
Organic Tracers
Tracing Reclaimed Water in the Three Subbasins
Menifee Subbasin
Winchester Subbasin
Perris-South Subbasin
Summary and Conclusions
References Cited
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