There is a lot of information available on groundwater in the Borrego Valley. Studies of the valley's groundwater occurred as early as 1909, following the development of major agricultural wells. In the early 1980's the County of San Diego Hydrologist, John Peterson, began systematically monitoring water levels in non-operating wells throughout the valley. That monitoring continues today. Since the early 1980's also, there have been extensive studies of the aquifer conducted by county, state and federal agencies. In the Spring of 2004, two new monitor wells were built to provide additional data on groundwater quality and quantity in the valley. In the Spring of 2006, two additional monitor wells were built to further expand knowledge of the valley's hydrogeology.
AgbabianAssociates, 1997. Geophysical Studies. Unpublished data.
Borrego Water District, 2001. Groundwater Management Study, Report of the Technical Committee, February 2, 2001.
Borrego Water District, 2002. Groundwater Management Plan, September 25, 2002.
Burnham, W.L., 1954. Data on water wells in Borrego, Ocotillo, San Felipe, and Vallecito Valley areas, eastern San Diego County California U.S. Geological Survey Open-File Report.
California Department of Water Resources, 1968, Water Wells and Springs in Borrego, Carrizo, and San Felipe Valley Areas. Bulletin No. 91-15, 16 p.
_____, 1981. A Preliminary Evaluation of Recharging the Borrego Valley Ground Water Basin with Local Runoff. Technical Information Record 1335-4301-A, by H. Iwanaga.
_____, 1983a. A Preliminary Evaluation of Cost of Imported Water Supplies to the Borrego Valley. Technical Information Record 1335-12-C-3, by K.K. Hatai.
_____, 1983b. A Preliminary Evaluation of Historical and Projected Water Demand for Borrego Valley Technical Information Record 1335-12-C-1, by K.K. Hatai.
_____, 1983c. Preliminary Evaluation of Annual Recharge to the Borrego Valley Ground Water Basin Technical Information Record 1335-11-B-1, by K.K. Hatai.
_____, 1984a. Evaluation of Future Operations of the Borrego Valley Ground Water Basin Technical Information Record 1335-11-B-2, by P. Louie and H. Iwanaga..
_____, 1984b. Borrego Valley Water Management Plan.
_____, Southern District, Resources Assessment Branch, Groundwater Section, 2007, An Interpretation of Geologic Materials Encountered in the Boring of Borrego Water District Monitoring Well MW-5: Technical Information Record SD-07-02, 18 p.
Cassiliano, Michael L., 2002, Revision of the Stratigraphic Nomenclature of the Plio-Pleistocene Palm Springs Group (New Rank), Anza-Borrego Desert, Southern California: San Diego, California, Proceedings of the San Diego Society of Natural History, No, 38, 30 p.
Dibblee, T. W. Jr., 1954, Geology of the Imperial Valley Region, California: in Jahns, R. H. ed., Geology of Southern California, California Division of Mines Bulletin170, Ch. II, p. 21-28.
_____, 1984, Stratigraphy and Techtonics of the San Felipe Hills, Borrego Badlands, Superstition Hill, and Vicinity: in Rigsby, C. A., ed., The Imperial Basin - Tectonics, Sedimentation, and Thermal Aspects: Pacific Section S.E.P.M., p. 31-44.
Dorsey, R. J., 2005, Stratigraphy Techtonics, and Basin Evolution in the Anza-Borrego Desert Region: in Jefferson, G. T. and Lindsey, L. E., eds., Fossil Treasures of the Anza-Borrego Desert, Sunbelt Publications, San Diego, CA, p. 89-104.
Henderson, T.W., 2001. Hydrogeology and Numerical Modeling of the Borrego Valley Aquifer System. Masters Thesis, San Diego State University, Fall 2001.
Lough'>, C. F., 1974, Water Budget for Borrego Valley, San Diego, County of San Diego Integrated Planning Office.
Martin, C.M., 1995. The Re-Interpretation of Gravity Data from Borrego Valley, California, Senior Thesis, San Diego State University, Fall 1995.
Mitten, H.T., G.C. Lines, C. Berenbrock, and T.J. Durbin, 1988. Water Resources of Borrego Valley and Vicinity, San Diego County California: Phase 2--Development of Ground-Water Flow Model. U.S. Geological Survey Water-Resources Investigations Report 87-4199, 27 pp.
Moyle, Jr., W.R., 1968. Water Wells and Springs in Borrego, Carrizo, and San Felipe ValleyAreas, San Diego and Imperial Counties California. California Department of Water Resources Bulletin 91-15, 16 p.
_____ 1982. Water Resources of Borrego Valley and Vicinity, California, Phase 1-- Definition of Geologic and Hydrologic Characteristics of Basin. U.S. Geological Survey Open-File Report 82-855, 39 pp.
Netto, S.P. (2001). Hydrogeology of Borrego Valley, Unpublished master's thesis, San Diego State University, San Diego, CA.
Peterson, John, et al., (circa 1980 - date) Recording data from monitoring water levels in non-operating wells in the Borrego Valley. Unpublished data available from the Office of the County of San Diego Hydrogeologist.
Phoenix, D. A., 1979, An Appraisal of the Groundwater Resources in the Northern Subbasin of the Borrego Valley Reservoir, San Diego County, with Emphasis on the Recovery of Groundwater from the Borrego Springs Park area: Consultant Report for Federated Development Company, 45 p.
Simoni, Tully R. Geophysical and lithologic data from a test well on Clark Lake, San Diego County, California Series: Open-file report (Geological Survey (U.S.)) ; 80-1302. [Reston, Va.] : U.S. Geological Survey, 1980.
Threet, R.L., 1972. Hydrogeology of Southern Borrego Valley. Prepared April 13, 1972 for: George J. Kuhrts III, Borrego Springs, California.
U. S. Bureau of Reclamation, 1968, Interim Report, Inland Basins Project, Borego Valley California: Boulder City, Nevada, United States Department of Interior, 62 p.
U. S. Environmental Protection Agency, Borrego Springs Pipeline Feasilibility Study, Draft - Final Report, U. S. EPA Region 9 - Tracking Number 10-430, February 2012, 39 p.
Winker, C. C., 1987, Neogene Stratigraphy of the Fish Creek-Vallecito Section, Southern California: Implications for Early History of the Northern Gulf of California and Colorado Delta: University of Arizona, Tucson, Ph.D. Dissertation, 494 p.