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V, 2022, Status and understanding of groundwater quality in the Sacramento Metropolitan Domestic-Supply Aquifer study unit, 2017—California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2022–5021, 52 p., http://doi.org/10.3133/sir20225021 Harkness; J.S., 2022, Potential Explanatory Variables for Groundwater Quality in the Redding-Red Bluff Shallow Aquifer Assessment Study Unit, 2018-2019: California GAMA Priority Basin Project, U.S. Geological Survey data release, http://doi.org/10.5066/P9XQIWRU Bennett V; G.L., 2022, Potential Explanatory Factors for Groundwater Quality in the Sacramento Metropolitan Domestic-Supply Aquifer Study Unit, 2017: California GAMA Priority Basin Project, U.S. Geological Survey data release, http://doi.org/10.5066/P9H4P0XF Watson; E. and Johnson; T.D., 2021, California Groundwater Ambient Monitoring and Assessment (GAMA) Program Shallow Aquifer Assessment Study Unit Grid Cells for Assessment of Groundwater Resources, U.S. Geological Survey data release, http://doi.org/10.5066/P931PZRC Stork; S.V.; and Fram; M.S., 2021, Water use information for sites sampled by the California Groundwater Ambient Monitoring and Assessment Program Priority Basin Project (GAMA-PBP), 2004-2021 (ver. 3.0, October 2023), U.S. Geological Survey data release, http://doi.org/10.5066/P9EHLFZM Soldavini; A.L.; Burton; C.A.; and Lawrence; C.J., 2021, Detections of Fecal Indicator Bacteria and DNA Sequencing of Selected Bacterial Growths in Samples from the Madera/Chowchilla-Kings Domestic Aquifer Study unit, 2014, U.S. Geological Survey data release, http://doi.org/10.5066/P9X7JH11 Levy; Z.F. and Fram; M.S., 2021, Geologic Influences on the Quality of Groundwater Used for Domestic Supply in the Northern Sierra Nevada Foothills, U.S. Geological Survey Fact Sheet 2021-3013, 4 p., http://doi.org/10.3133/fs20213013 Levy; Z.F.; Balkan; M.; and Shelton; J.L., 2021, Quality of groundwater used for domestic supply in the northern San Joaquin Valley, California, U.S. Geological Survey Fact Sheet 2021-3040, 4 p., http://doi.org/10.3133/fs20213040 Levy; Z.F.; and Fram; M.S., 2021, Status and understanding of groundwater quality in the northern Sierra Nevada foothills domestic-supply aquifer study units, 2015–17—California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2021–5019, 120 p., http://doi.org/10.3133/sir20215019 Kent; R.H., 2021, Data sets for: Sampling for Per- and Polyfluoroalkyl Substances (PFAS) by the Groundwater Ambient Monitoring and Assessment Priority Basin Project (GAMA-PBP), U.S. Geological Survey data release, http://doi.org/10.5066/P92IPRJD Haugen; E.A.; and Arroyo-Lopez; J.A., 2021, Water Quality data compiled for Groundwater development leads to decreasing arsenic concentrations in the San Joaquin Valley, California, U.S. Geological Survey data release, http://doi.org/10.5066/P9OZ50BM Burton; C.A.; and Lawrence; C.J., 2021, Identification of bacteria in groundwater used for domestic supply in the southeast San Joaquin Valley, California, 2014, U.S. Geological Survey Scientific Investigations Report 2021-5030, 20 p.,, http://doi.org/10.3133/sir20215030 Balkan; M.; Levy; Z.F.; Shelton; J.L.; Johnson; T.D.; and Watson; E., 2021, Groundwater-quality data in the Northern San Joaquin Valley Domestic-Supply Aquifer Study Unit, 2019, U.S. Geological Survey data release, http://doi.org/10.5066/P9Q083IB Haugen; E.A.; Jurgens; B.C.; Arroyo-Lopez; J.A.; and Bennett; G.L., 2021, Groundwater Development Leads to Decreasing Arsenic Concentrations in the San Joaquin Valley, California, Science of The Total Environment, Volume 771, 2021, 145223, ISSN 0048-9697, http://doi.org/doi.org/10.1016/j.scitotenv.2021.145223 Kent; R.H., 2021, Sampling for Per- and Polyfluoroalkyl Substances (PFAS) by the Groundwater Ambient Monitoring and Assessment Priority Basin Project, U.S. Geological Survey Fact Sheet 2021-3028, 4 p., http://doi.org/10.3133/fs20213028 Levy; Z.F.; Fram; M.S.; Faulkner; K.E.; Alpers; C.N.; Soltero; E.M.; and Taylor; K.A., 2020, Effects of montane watershed development on vulnerability of domestic groundwater supply during drought, Hydrology, v. 583, article 124567, http://doi.org/10.1016/j.jhydrol.2020.124567 Jurgens; B.C.; Fram; M.S.; Rutledge; J.; and Bennett; G.L., 2020, Identifying areas of degrading and improving groundwater-quality conditions in the State of California, USA, 1974–2014, Environmental Monitoring and Assessment, v. 192, article 250, http://doi.org/10.1007/s10661-020-8180-y Bennett; G.L., 2020, Updated Study Reporting Levels (SRLs) for Trace-Element Data Collected for the California Groundwater Ambient Monitoring and Assessment (GAMA) Program Priority Basin Project, October 2009–October 2018, U.S. Geological Survey Scientific Investigations Report 2020-5034, 24 p., http://doi.org/10.3133/sir20205034 Harkness; J.S.; and Shelton; J.L., 2020, Groundwater Quality in the Redding–Red Bluff Shallow Aquifer Study Unit of the Northern Sacramento Valley, California, U.S. Geological Survey Fact Sheet 2020-3025, http://doi.org/10.3133/fs20203025 Bennett; G.L., 2020, Blank results for trace-element data collected for the California Groundwater Ambient Monitoring and Assessment (GAMA) Program Priority Basin Project, October 2009–October 2018, U.S. Geological Survey data release, http://doi.org/10.5066/P9TRFPUO Kent; R.; Johnson; T.D.; and Rosen; M.R., 2020, Status and trends of orthophosphate concentrations in groundwater used for public supply in California, Environmental Monitoring and Assessment, v. 192, article 550, http://doi.org/10.1007/s10661-020-08504-x Shelton; J.L; Bennett; G.L.; Watson; E.; and Johnson; T.D., 2020, Groundwater-quality data in the Redding-Red Bluff Shallow Aquifer Study Unit, 2018-2019: Results from the California GAMA Priority Basin Project, U.S. Geological Survey data release, http://doi.org/10.5066/P9ZKAH3O Levy; Z.F., 2020, Potential Explanatory factors for Groundwater Quality in the Northern Sierra Nevada Foothills Domestic-Aquifer Assessment Study Units, 2015-2017: California GAMA Priority Basin Project, U.S. Geological Survey data release, http://doi.org/10.5066/P9Z3O812 Fram; M.S., 2020, Pesticide constituent data from the California Groundwater Ambient Monitoring and Assessment Program Priority Basin Project (GAMA-PBP), August 2013 - May 2018, schedule 2437 constituents, U.S. Geological Survey data release, http://doi.org/10.5066/P9IYH6ZY Burow; K.R.; Floyd; W.D.; and Landon; M.K., 2019, Factors affecting 1, 2, 3-trichloropropane contamination in groundwater in California, Science of The Total Environment, v. 672, p. 324-334, http://doi.org/10.1016/j.scitotenv.2019.03.420 Groover; K.D.; and Goldrath; D.A., 2019, Groundwater quality in shallow aquifers in the western Mojave Desert, California, U.S. Geological Survey Fact Sheet 2019-3033, 4 p., http://doi.org/10.3133/fs20193033 Levy; Z.F.; Fram; M.S.; and Taylor; K.A., 2019, Effects of surface-water use on domestic groundwater availability and quality during drought in the Sierra Nevada Foothills, California, U.S. Geological Survey Fact Sheet 2019-3077, 4 p., http://doi.org/10.3133/fs20193077 Bennett; G.L.V., 2019, Groundwater quality in the Sacramento Metropolitan shallow aquifer, California, U.S. Geological Survey Open-File Report 2019-1047, 4 p., http://doi.org/10.3133/ofr20191047 Voss; S.A.; Jurgens; B.C.; Fram; M.S.; and Bennett; G.L.V., 2019, Delineation of spatial extent, depth, thickness, and potential volume of aquifers used for domestic and public water-supply in the Central Valley, California, U.S. Geological Survey Scientific Investigations Report 2019-5076, 34 p., http://doi.org/10.3133/sir20195076 Fram; M.S.; and Stork; S.V., 2019, Determination of study reporting limits for pesticide constituent data for the California Groundwater Ambient Monitoring and Assessment Program Priority Basin Project, 20042018Part 1: National Water Quality Schedules 2003, 2032, or 2033, and 2060, U.S. Geological Survey Scientific Investigations Report 2019-5107, 129 p., http://doi.org/10.3133/sir20195107 Rosen; M.R.; Burow; K.R.; and Fram; M.S., 2019, Anthropogenic and geologic causes of anomalously high uranium concentrations in groundwater used for drinking water supply in the southeastern San Joaquin Valley, CA, Journal of Hydrology, v. 577, article 124009, http://doi.org/10.1016/j.jhydrol.2019.124009 Voss; S.A.; Miller-Schulze; J.; and De Parsia; E.R., 2019, Sucralose Concentrations in Groundwater in California's Sacramento Valley Shallow Aquifer System, U.S. Geological Survey data release, http://doi.org/10.5066/P9GNEQX1 Lor; V.; Balkan; M.; and Stork; S.V., 2019, Pesticide Constituent Data from the California Groundwater Ambient Monitoring and Assessment Program Priority Basin Project (GAMA-PBP), 2004 - 2018, U.S. Geological Survey data release, http://doi.org/10.5066/P9344TOS Levy; Z.F.; and Faulkner; K.E., 2019, Dissolved Noble Gas Concentrations and Modeled Recharge Temperatures for Groundwater from Northern Sierra Nevada Foothills Shallow Aquifer Assessment Study Units, 2015-2017: Results from the California GAMA Priority Basin Project, U.S. Geological Survey data release, http://doi.org/10.5066/P9YETK9P Groover; K.D.; Goldrath; D.A.; Bennett; G.L.; Johnson; T.D.; and Watson; E.E., 2019, Groundwater-Quality Data in the Mojave Basin Shallow Aquifer Study Unit, 2018: Results from the California GAMA Priority Basin Project, U.S. Geological Survey data release, http://doi.org/10.5066/P9C7U6DW Fram; M.S., 2019, Water quality and ancillary data for assessment of uranium concentrations in groundwater, San Joaquin Valley, CA (ver. 1.1, December, 2019), U.S. Geological Survey data release, http://doi.org/10.5066/P94ME8S6 Bennett; G.L.; V.; Shelton; J.L.; Watson; E.; Johnson; T.D.; and Jasper; M., 2019, Groundwater-quality data in the Sacramento Metro shallow aquifer study unit, 2017: Results from the California GAMA Priority Basin Project, U.S. Geological Survey data release, http://doi.org/10.5066/P9BPGEGH Stork; S.V.; McGregor; A.M.; Balkan; M.; Arroyo-Lopez; J.; Borkovich; J.G.; Lor; V.; Peng; S.; and Jasper; M., 2019, Attributed California Water Supply Well Completion Report Data for Selected Areas, Derived from CA WCR OSCWR Data, U.S. Geological Survey data release, http://doi.org/10.5066/P9R1V41Q Hansen; J.A.; Jurgens; B.; and Fram; M.S., 2018, Quantifying anthropogenic contributions to century-scale groundwater salinity changes, San Joaquin Valley, California, USA, Science of the Total Environment, v. 642, p. 125-136, http://doi.org/10.1016/j.scitotenv.2018.05.333 Burton; C.A.; and Wright; M.T., 2018, Status and understanding of groundwater quality in the Monterey-Salinas Shallow Aquifer Study Unit, 2012-13: California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2018-5057, 132 p., http://doi.org/10.3133/sir20185057 U.S. Geological Survey, 2018, California Groundwater Ambient Monitoring and Assessment (GAMA) Program Priority Basin Project--Shallow aquifer assessment, U.S. Geological Survey Fact Sheet 2012-3136, 2 p., http://doi.org/10.3133/fs20123136 Bennett; G.L.; and Fram; M.S., 2018, Groundwater quality in the North San Francisco Bay shallow aquifer, California, U.S. Geological Survey Fact Sheet 2018-3007, 4 p., http://doi.org/10.3133/fs20183007 Burton; C.A., 2018, Groundwater quality in the shallow aquifers of the Monterey Bay, Salinas Valley, and adjacent highland areas, California, U.S. Geological Survey Fact Sheet 2018-3026, 4 p., http://doi.org/10.3133/fs20183026 Bennett; G.L.V., 2018, Comparing public-supply and shallow aquifer groundwater quality in the North San Francisco Bay Aquifers, California, U.S. Geological Survey Fact Sheet 2018-3064, 4 p., http://doi.org/10.3133/fs20183064 Burton; C.A., 2018, Comparing groundwater quality in public-supply and shallow aquifers in the Monterey Bay and Salinas Valley Basins, California, U.S. Geological Survey Fact Sheet 2018-3078, 4 p., http://doi.org/10.3133/fs20183078 Fram; M.S.; and Shelton; J.L., 2018, Groundwater quality in the shallow aquifers of the Madera-Chowchilla and Kings subbasins, San Joaquin Valley, California, U.S. Geological Survey Open-File Report 2017-1162, 4 p., http://doi.org/10.3133/ofr20171162 Fram; M.S.; and Shelton; J.L., 2018, Groundwater quality in the Mokelumne, Cosumnes, and American River Watersheds, Sierra Nevada, California, U.S. Geological Survey Open-File Report 2018-1047, 4 p., http://doi.org/10.3133/ofr20181047 Kent; R., 2018, Variations on a method for evaluating decadal-scale changes in the groundwater quality of two GAMA coastal study units 2004-14, California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2018-5088, 90 p., http://doi.org/10.3133/sir20185088 Voss; S.A.; and Jurgens; B.C., 2018, Spatial Point Data Sets and Interpolated Surfaces of Well Construction Characteristics for Domestic and Public Supply Wells in the Central Valley, California, USA, U.S. Geological Survey data release, http://doi.org/10.5066/F76Q1V9G Shelton; J.L.; Fram; M.S.; Goldrath; D.A.; Bennett; G.L.; V; and Jasper; M., 2018, Groundwater-quality data in the Mokelumne, Cosumnes, and American River Watersheds Shallow Aquifer Study Unit, 2016-2017: Results from the California GAMA Priority Basin Project, U.S. Geological Survey data release, http://doi.org/https://doi.org/10.5066/F78G8JXP Kent; R.H., 2018, Data sets for: Variations on a method for evaluating decadal-scale changes in the groundwater quality of two GAMA coastal study units 2004-2014, California GAMA Priority Basin Project, U.S. Geological Survey data release, http://doi.org/10.5066/F7GH9GF5 Johnson; T.D.; Watson; E.; and Belitz; K., 2018, California Groundwater Ambient Monitoring and Assessment (GAMA) Program Priority Basin Project Study Areas and grid cells for assessment of groundwater resources used for public drinking-water supply, U.S. Geological Survey data release, http://doi.org/10.5066/F79Z93CN Hansen; J.A.; Jurgens B.C.; and Fram; M.S., 2018, Groundwater-quality data and ancillary data for selected wells in the San Joaquin Valley, California, 1900-2015, U.S. Geological Survey data release, http://doi.org/10.5066/F7319T3K Fram; M.S., 2017, Groundwater quality in the Western San Joaquin Valley study unit, 2010: California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2017-5032, 130 p., http://doi.org/10.3133/sir20175032 Mathany; T.M.; and Burton; C.A., 2017, Status and understanding of groundwater quality in the Bear Valley and Lake Arrowhead Watershed Study Unit, 2010: California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2017-5043, 71 p., http://doi.org/10.3133/sir20175043 Fram; M.S., 2017, Groundwater quality in the shallow aquifers of the Tulare, Kaweah, and Tule Groundwater Basins and adjacent highlands areas, Southern San Joaquin Valley, California, U.S. Geological Survey Fact Sheet 2017-3001, 4 p., http://doi.org/10.3133/fs20173001 Fram; M.S., 2017, Groundwater quality in the western San Joaquin Valley, California, U.S. Geological Survey Fact Sheet 2017-3028, 4 p., http://doi.org/10.3133/fs20173028 Mathany; T.M.; Burton; C.A.; and Fram; M.S., 2017, Groundwater quality in the Bear Valley and Lake Arrowhead Watershed, California, U.S. Geological Survey Fact Sheet 2017-3037, 4 p., http://doi.org/10.3133/fs20173037 Fram; M.S.; Jasper; M.; and Taylor; K.A., 2017, Groundwater quality in the Yuba River and Bear River watersheds, Sierra Nevada, California, U.S. Geological Survey Open-File Report 2017-1115, 4 p., http://doi.org/10.3133/ofr20171115 Bennett; G.L.V., 2017, Status and understanding of groundwater quality in the North San Francisco Bay Shallow Aquifer study unit, 2012; California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2017-5051, 74 p., http://doi.org/10.3133/sir20175051 Shelton; J.L.; and Fram; M.S., 2017, Groundwater-quality data for the Madera/Chowchilla–Kings shallow aquifer study unit, 2013–14: Results from the California GAMA Program, U.S. Geological Survey Data Series 1019, http://doi.org/10.3133/ds1019 Jasper; M.; Bennett; G.L.; and Fram; M.S., 2017, Groundwater-Quality Data in the Yuba and Bear Watersheds Shallow Aquifer Study Unit, 2015-2016: Results from the California GAMA Priority Basin Project, U.S. Geological Survey data release, http://doi.org/10.5066/F73F4MS9 Mathany; T.M., 2017, Groundwater-quality data in 12 GAMA study units: Results from the 2006–10 initial sampling period and the 2008–13 trend sampling period, California GAMA Priority Basin Project, U.S. Geological Survey Data Series Report 1038, http://doi.org/10.3133/ds1038 Bennett; G.L.; V; Fram; M.S.; and Johnson; T.D., 2017, Groundwater-Quality Data in the Tulare Shallow Aquifer Study Unit, 2014-2015: Results from the California GAMA Priority Basin Project, U.S. Geological Survey data release, http://doi.org/10.5066/F7BP00W8 Jurgens; B.C.; Bohlke; J.K.; Kauffman; L.J.; Belitz; K.; and Esser; B.K., 2016, A partial exponential lumped parameter model to evaluate groundwater age distributions and nitrate trends in long-screened wells, Journal of Hydrology, v. 543, no. 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K.; Fram; M.S.; and Johnson; T.D., 2015, Metrics for assessing the quality of groundwater used for public Supply, CA, USA: equivalent-population and area, Environmental Science and Technology, v. 49, no. 14, p. 8330-8338, http://doi.org/10.1021/acs.est.5b00265 Izbicki; J.A.; Wright; M.T.; Seymour; W.A.; McCleskey; R.B.; Fram; M.S.; Belitz; K.; and Esser; B.K., 2015, Cr(VI) occurrence and geochemistry in water from public-supply wells in California, Applied Geochemistry, v. 63, p. 203-217, http://doi.org/10.1016/j.apgeochem.2015.08.007 Deeds; D.A.; Kulongoski; J.T.; Muhle; J.; and Weiss; R.F., 2015, Tectonic activity as a significant source of crustal tetrafluoromethane emissions to the atmosphere: observations in groundwaters along the San Andreas Fault, Earth and Planetary Science Letters, v. 412, p. 163-172, http://doi.org/10.1016/j.epsl.2014.12.016 Mathany; T.M.; and Belitz; K., 2015, Status and understanding of groundwater quality in the Northern Coast Ranges Study Unit, 2009: California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2014-5215, 86 p., http://doi.org/10.3133/sir20145215 Fram; M.S.; and Shelton; J.L., 2015, Status and understanding of groundwater quality in the Cascade Range and Modoc Plateau Study Unit, 2010: California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2014-5238, 131 p., http://doi.org/10.3133/sir20145238 Goldrath; D.A.; Kulongoski; J.T.; and Davis; T.A., 2015, Groundwater-quality data in the Monterey–Salinas shallow aquifer study unit, (ver. 1.1, January 2017): Results from the California GAMA Program, U.S. Geological Survey Data Series 987, 132 p., http://doi.org/10.3133/ds987 Kent; Robert, 2015, Groundwater quality data in 15 GAMA study units: Results from the 2006–10 initial sampling and the 2009–13 resampling of wells, California GAMA Priority Basin Project, U.S. Geological Survey Data Series 919, 219 p., http://doi.org/10.3133/ds919 Mathany; T.M.; and Belitz; K., 2015, Groundwater quality in the Northern Coast Ranges Groundwater Basins, California, U.S. Geological Survey Fact Sheet 2014-3114, 4 p., http://doi.org/10.3133/fs20143114 Fram; M.S.; and Shelton; J.L., 2015, Groundwater quality in the Cascade Range and Modoc Plateau, California, U.S. Geological Survey Fact Sheet 2014-3123, 4 p., http://doi.org/10.3133/fs20143123 Wright; M.T.; Fram; M.S.; and Belitz; K., 2015, Geochemical conditions and the occurrence of selected trace elements in groundwater basins used for public drinking-water supply, Desert and Basin and Range Hydrogeologic Provinces, 2006-11, U.S. Geological Survey Scientific Investigations Report 2014-5173, 48 p., http://doi.org/10.3133/sir20145173 Johnson; T.D.; and Belitz; K., 2015, Identifying the location and population served by domestic wells in California, Journal of Hydrology: Regional Studies, v. 3, p. 31-86, http://doi.org/10.1016/j.ejrh.2014.09.002 Wright; M.T.; Stollenwerk; K.G.; and Belitz; K., 2014, Assessing the solubility controls on vanadium in groundwater, northeastern San Joaquin Valley, CA, Applied Geochemistry, v. 48, no. 0, p. 42-53, http://doi.org/10.1016/j.apgeochem.2014.06.025 Bennett; G.L.; V; Fram; M.S.; and Belitz; K., 2014, Status and Understanding of Groundwater Quality in the Klamath Mountains Study Unit, 2010: California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2014-5065, 58 p., http://doi.org/10.3133/sir20145065 Fram; M.S.; and Belitz; K., 2014, Status and understanding of groundwater quality in the Sierra Nevada Regional Study Unit, 2008: California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2014-5174, 118 p., http://doi.org/10.3133/sir20145174 Johnson; T.D.; and Belitz; K., 2014, California groundwater units, U.S. Geological Survey Data Series 796, 34 p., http://doi.org/10.3133/ds796 Parsons; M.C.; and Belitz; K., 2014, Groundwater quality in the South Coast Interior Basins, California, U.S. Geological Survey Fact Sheet 2013-3088, 4 p., http://doi.org/10.3133/fs20133088 Bennett; G.L.; V; and Fram; M.S., 2014, Groundwater Quality in the Klamath Mountains, California, U.S. Geological Survey Fact Sheet 2014-3031, 4 p., http://doi.org/10.3133/fs20143031 Parsons; M.C.; and Belitz; K., 2014, Groundwater quality in the Borrego Valley, Central Desert, and low-use basins of the Mojave and Sonoran Deserts, California, U.S. Geological Survey Fact Sheet 2014-3001, 4 p., http://doi.org/10.3133/fs20143001 Fram; M.S.; and Belitz; K., 2014, Groundwater quality in the Sierra Nevada, California, U.S. Geological Survey Fact Sheet 2014-3096, 4 p., http://doi.org/10.3133/fs20143096 Parsons; M.C.; Hancock; T.C.; Kulongoski; J.T.; and Belitz; K., 2014, Status of groundwater quality in the Borrego Valley, Central Desert, and low-use basins of the Mojave and Sonoran Deserts study unit, 2008-2010: California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2014-5001, 88 p., http://doi.org/10.3133/sir20145001 Parsons; M.C.; Kulongoski; J.T.; and Belitz; K., 2014, Status and understanding of groundwater quality in the South Coast Interior groundwater Basins, 2008: California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2014-5023, 68 p., http://doi.org/10.3133/sir20145023 Davis; T.A.; Olsen; L.D.; Fram; M.S.; and Belitz; K., 2014, Updated study reporting levels (SRLs) for trace-element data collected for the California Groundwater Ambient Monitoring and Assessment (GAMA) Priority Basin Project, October 2009-March 2013, U.S. Geological Survey Scientific Investigations Report 2014-5105, 52 p., http://doi.org/10.3133/sir20145105 Mathany; T.M.; and Belitz; Kenneth, 2014, Groundwater-quality data in the Klamath Mountains study unit, 2010—Results from the California GAMA Program, U.S. Geological Survey Data Series 803, 82 p., http://doi.org/10.3133/ds803 Kent; Robert; Belitz; Kenneth; and Fram; M.S., 2014, Groundwater-quality data in seven GAMA study units: Results from initial sampling, 2004–2005, and resampling, 2007–2008, of wells: California GAMA Program Priority Basin Project, U.S. Geological Survey Data Series 795, 170 p., http://doi.org/10.3133/ds795 Davis; T.A.; and Shelton; J.L., 2014, Groundwater-quality data in the Santa Cruz, San Gabriel, and Peninsular Ranges Hard Rock Aquifers study unit, 2011–2012—Results from the California GAMA Program, U.S. Geological Survey Data Series 874, 142 p., http://doi.org/10.3133/ds874 Bennett; G.L.;V; and Fram; M.S., 2014, Groundwater-quality data in the North San Francisco Bay Shallow Aquifer study unit, 2012—Results from the California GAMA Program, U.S. Geological Survey Data Series 865, 94 p., http://doi.org/10.3133/ds865 Forrest; M.J.; Kulongoski; J.T.; Edwards; M.S.; Farrar; C.D.; Belitz; K.; and Norris; R.D., 2013, Hydrothermal contamination of public supply wells in Napa and Sonoma Valleys, California, Applied Geochemistry, v. 33, p. 25-41, http://doi.org/10.1016/j.apgeochem.2013.01.012 Burton; C.A.; Land; M.T.; and Belitz; K., 2013, Status and understanding of groundwater quality in the South Coast Range-Coastal Study Unit, 2008: California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2013-5053, 86 p., http://doi.org/10.3133/sir20135053 Kent; R.H.; and Landon; M.K., 2013, Trends in concentrations of nitrate and total dissolved solids in public supply wells of the Bunker Hill, Lytle, Rialto, and Colton groundwater Subbasins, San Bernardino County, California: Influence of legacy land use, Science of The Total Environment, v. 452-453, p. 125-136, http://doi.org/10.1016/j.scitotenv.2013.02.042 Landon; M.K.; Burton; C.A.; Davis; T.A.; Belitz; K.; and Johnson; T.D., 2013, Statistical evaluation of variables affecting occurrence of hydrocarbons in aquifers used for public supply, California, Journal of the American Water Resources Association, p. 1-17, http://doi.org/10.1111/jawr.12129 Shelton; J.L.; Fram; M.S.; and Belitz; K., 2013, Groundwater quality in the Madera and Chowchilla subbasins of the San Joaquin Valley, California, U.S. Geological Survey Fact Sheet 2012-3099, 4 p., http://doi.org/10.3133/fs20123099 Parsons; M.C.; Kulongoski; J.T.; and Belitz; K., 2013, Groundwater quality in the San Francisco Bay groundwater basins, California, U.S. Geological Survey Fact Sheet 2012-3111, 4 p., http://doi.org/10.3133/fs20123111 Burton; C.A.; and Belitz; K., 2013, Groundwater quality in the South Coast Range Coastal Groundwater Basins, California, U.S. Geological Survey Fact Sheet 2013-3015, 4 p., http://doi.org/10.3133/fs20133015 Parsons; M.C.; Kulongoski; J.T.; and Belitz; K., 2013, Status and understanding of groundwater quality in the San Francisco Bay groundwater basins, 2007: California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2012-5248, 76 p., http://doi.org/10.3133/sir20125248 Shelton; J.L.; Fram; M.S.; and Belitz; Kenneth, 2013, Groundwater-quality data in the Cascade Range and Modoc Plateau study unit, 2010—Results from the California GAMA Program, U.S. Geological Survey Data Series 688, 124 p., http://doi.org/10.3133/ds688 Mathany; T.M.; Landon; M.K.; Shelton; J.L.; and Belitz; Kenneth, 2013, Groundwater-quality data in the Western San Joaquin Valley study unit, 2010—Results from the California GAMA Program, U.S. Geological Survey Data Series 706, 102 p., http://doi.org/10.3133/ds706 Mathany; T.M.; and Belitz; Kenneth, 2013, Groundwater-quality data in the Bear Valley and Selected Hard Rock Areas study unit, 2010: Results from the California GAMA Program, U.S. Geological Survey Data Series 747, 86 p., http://doi.org/10.3133/ds747 Davis; T.A.; Kulongoski; J.T.; and Belitz; Kenneth, 2013, Groundwater-quality data in the Santa Barbara study unit, 2011—Results from the California GAMA Program, U.S. Geological Survey Data Series 742, 72 p., http://doi.org/10.3133/ds742 Kulongoski; J.T.; Hilton; D.R.; Barry; P.H.; Bradley; K.E.; Hillegonds; D.J.; and Belitz; K., 2012, Volatile fluxes through the Big Bend section of the San Andreas Fault, California: Helium and carbon-dioxide systematics, Chemical Geology, v. 339, p. 92-103, http://doi.org/10.1016/j.chemgeo.2012.09.007 Fram; M.S.; and Belitz; K., 2012, Status and understanding of groundwater quality in the Tahoe-Martis, Central Sierra, and Southern Sierra Study Units, 2006-2007: California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2011-5216, 222 p., http://doi.org/10.3133/sir20115216 Burton; C.A.; Shelton; J.L.; and Belitz; K., 2012, Status and understanding of groundwater quality in the two southern San Joaquin Valley study units, 2005-2006: California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2011-5218, 150 p., http://doi.org/10.3133/sir20115218 Landon; M.K.; and Belitz; K., 2012, Geogenic sources of benzene in aquifers used for public supply, California, Environmental Science & Technology, v. 46, no. 16, p. 8689-8697, http://doi.org/10.1021/es302024c Deeds; D.A.; Kulongoski; J.T.; and Belitz; K., 2012, Assessing California groundwater susceptibility using trace concentrations of halogenated volatile organic compounds, Environmental Science and Technology, v. 46, no. 24, p. 13128-13135, http://doi.org/10.1021/es303546b Fram; M.S.; and Belitz; K., 2012, Groundwater quality in the coastal Los Angeles Basin, California, U.S. Geological Survey Fact Sheet 2012-3096, 4 p., http://doi.org/10.3133/70039952 Kulongoski; J.T.; and Belitz; K., 2012, Groundwater quality in the San Fernando-San Gabriel groundwater basins, California, U.S. Geological Survey Fact Sheet 2011-3139, 4 p., http://doi.org/10.3133/fs20113139 Fram; M.S.; and Belitz; K., 2012, Groundwater quality in the Tahoe and Martis Basins, California, U.S. Geological Survey Fact Sheet 2011-3143, 4 p., http://doi.org/10.3133/fs20113143 Burton; C.A.; and Belitz; K., 2012, Groundwater quality in the Southeast San Joaquin Valley, California, U.S. Geological Survey Fact Sheet 2011-3151, 4 p., http://doi.org/10.3133/fs20113151 Burton; C.A.; and Belitz; K., 2012, Groundwater Quality in the Kern County Subbasin, California, U.S. Geological Survey Fact Sheet 2011-3150, 4 p., http://doi.org/10.3133/fs20113150 Fram; M.S.; and Belitz; K., 2012, Groundwater quality in the southern Sierra Nevada, California, U.S. Geological Survey Fact Sheet 2012-3011, 4 p., http://doi.org/10.3133/fs20123011 Fram; M.S.; and Belitz; K., 2012, Groundwater quality in the central Sierra Nevada, California, U.S. Geological Survey Fact Sheet 2012-3010, 4 p., http://doi.org/10.3133/fs20123010 Dawson; B.J.M.; and Belitz; K., 2012, Groundwater quality in the Owens Valley, California, U.S. Geological Survey Fact Sheet 2012-3032, 4 p., http://doi.org/10.3133/fs20123032 Dawson; B.J.M.; and Belitz; K., 2012, Groundwater quality in the Antelope Valley, California, U.S. Geological Survey Fact Sheet 2012-3033, 4 p., http://doi.org/10.3133/fs20123033 Dawson; B.J.M.; and Belitz; K., 2012, Groundwater quality in the Colorado River Basins, California, U.S. Geological Survey Fact Sheet 2012-3034, 4 p., http://doi.org/10.3133/fs20123034 Dawson; B.J.M.; and Belitz; K., 2012, Groundwater quality in the Indian Wells Valley, California, U.S. Geological Survey Fact Sheet 2012-3035, 4 p., http://doi.org/10.3133/fs20123035 Dawson; B.J.M.; and Belitz; K., 2012, Groundwater quality in the Mojave Area, California, U.S. Geological Survey Fact Sheet 2012-3036, 4 p., http://doi.org/10.3133/fs20123036 Kent; R.H.; and Belitz; K., 2012, Groundwater quality in the Upper Santa Ana Watershed study unit, California, U.S. Geological Survey Fact Sheet 2012-3037, 4 p., http://doi.org/10.3133/fs20123037 Dawson; B.J.M.; and Belitz; K., 2012, Groundwater quality in Coachella Valley, California, U.S. Geological Survey Fact Sheet 2012-3098, 4 p., http://doi.org/10.3133/fs20123098 Land; M.T.; Kulongoski; J.T.; and Belitz; K., 2012, Status of groundwater quality in the San Fernando-San Gabriel Study Unit, 2005: California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2011-5206, 66 p., http://doi.org/10.3133/sir20115206 Dawson; B.J.M.; and Belitz; K., 2012, Status of groundwater quality in the California Desert Region, 2006-2008: California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2012-5040, 110 p., http://doi.org/10.3133/sir20125040 Goldrath; D.A.; Fram; M.S.; Land; M.T.; and Belitz; K., 2012, Status of groundwater quality in the coastal Los Angeles Basin, 2006: California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2012-5048, 64 p., http://doi.org/10.3133/sir20125048 Kent; R.H.; and Belitz; K., 2012, Status of groundwater quality in the Upper Santa Ana Watershed, November 2006-March 2007: California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2012-5052, 88 p., http://doi.org/10.3133/sir20125052 Shelton; J.L.; Fram; M.S.; Belitz; K.; and Jurgens; B.C., 2012, Status and understanding of groundwater quality in the Madera-Chowchilla Study Unit, 2008 - California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2012-5094, 86 p., http://doi.org/10.3133/sir20125094 Fram; M.S.; Olsen; L.D.; and Belitz; K., 2012, Evaluation of volatile organic compound (VOC) blank data and application of study reporting levels to groundwater data collected for the California GAMA Priority Basin Project, May 2004 through September 2010, U.S. Geological Survey Scientific Investigations Report 2012-5139, 94 p., http://doi.org/10.3133/sir20125139 Mathany; T.M.; Wright; M.T.; Beuttel; B.S.; and Belitz; Kenneth, 2012, Groundwater-quality data in the Borrego Valley, Central Desert, and Low-Use Basins of the Mojave and Sonoran Deserts study unit, 2008–2010—Results from the California GAMA Program, U.S. Geological Survey Data Series 659, 100 p., http://doi.org/10.3133/ds659 Landon; M.K.; Green; C.T.; Belitz; K.; Singleton; M.J.; and Esser; B.K., 2011, Relations of hydrogeologic factors, groundwater reduction-oxidation conditions, and temporal and spatial distributions of nitrate, Central-Eastside San Joaquin Valley, California, USA, Hydrogeology Journal, v. 19, no. 6, p. 1203-1224, http://doi.org/10.1007/s10040-011-0750-1 Burton; C.A.; Montrella; J.; Landon; M.K.; and Belitz; K., 2011, Status and understanding of groundwater quality in the Santa Clara River Valley, 2007: California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2011-5052, 67 p., http://doi.org/10.3133/sir20115052 Kulongoski; J.T.; Belitz; K.; Landon; M.K.; and Farrar; C.D., 2011, Status and understanding of groundwater quality in the Monterey Bay and Salinas Valley Groundwater Basins 2005: California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2011-5058, 60 p., http://doi.org/10.3133/sir20115058 Wright; M.T.; and Belitz; K., 2011, Status and understanding of groundwater quality in the San Diego Drainages Hydrogeologic Province, 2004: California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2011-5154, 71 p., http://doi.org/10.3133/sir20115154 Fram; M.S.; and Belitz; K., 2011, Occurrence and concentrations of pharmaceutical compounds in groundwater used for public drinking-water supply in California, Science of The Total Environment, v. 409, no. 18, p. 3409-3417, http://doi.org/10.1016/j.scitotenv.2011.05.053 Fram; M.S.; and Belitz; K., 2011, Probability of detecting perchlorate under natural conditions in deep groundwater in California and the Southwestern United States, Environmental Science & Technology, v. 45, no. 4, p. 1271-1277, http://doi.org/10.1021/es103103p Wright; M.T.; and Belitz; K., 2011, Groundwater quality in the San Diego Drainages Hydrogeologic Province, California, U.S. Geological Survey Fact Sheet 2011-3111, 4 p., http://doi.org/10.3133/70006303 Bennett; G.L.; V; Fram; M.S.; and Belitz; K., 2011, Groundwater quality in the northern Sacramento Valley, California, U.S. Geological Survey Fact Sheet 2011-3004, 4 p., http://doi.org/10.3133/fs20113004 Bennett; G.L.; V; Fram; M.S.; and Belitz; K., 2011, Groundwater quality in the middle Sacramento Valley, California, U.S. Geological Survey Fact Sheet 2011-3005, 4 p., http://doi.org/10.3133/fs20113005 Bennett; G.L.; V; Fram; M.S.; and Belitz; K., 2011, Groundwater quality in the southern Sacramento Valley, California, U.S. Geological Survey Fact Sheet 2011-3006, 4 p., http://doi.org/10.3133/fs20113006 Burton; C.A.; Landon; M.K.; and Belitz; K., 2011, Groundwater quality in the Santa Clara River Valley, California, U.S. Geological Survey Fact Sheet 2011-3055, 4 p., http://doi.org/10.3133/fs20113055 Kulongoski; J.T.; and Belitz; K., 2011, Groundwater quality in the Monterey Bay and Salinas Valley Groundwater Basins, California, U.S. Geological Survey Fact Sheet 2011-3089, 4 p., http://doi.org/10.3133/fs20113089 Landon; M.K.; Green; C.T.; Belitz; K.; Singleton; M.J.; and Esser; B.K., 2011, Distribution of reduction-oxidation conditions and changes in nitrate concentrations over time in groundwater, Central-Eastside San Joaquin Valley, California, Hydrogeology Journal, v. 19, p. 1203-1224, http://doi.org/10.1007/s10040-011-0750-1 Mathany; T.M.; Dawson; B.J.; Shelton; J.L.; and Belitz; Kenneth, 2011, Groundwater-quality data in the northern Coast Ranges study unit, 2009: Results from the California GAMA Program, U.S. Geological Survey Data Series 609, 92 p., http://doi.org/10.3133/ds609 Landon; M.K.; Belitz; K.; Jurgens; B.C.; Kulongoski; J.T.; and Johnson; T.D., 2010, Status and understanding of groundwater quality in the Central-Eastside San Joaquin Basin, 2006, U.S. Geological Survey Scientific Investigations Report 2009-5266, 97 p., http://doi.org/10.3133/sir20095266 Kulongoski; J.T.; Belitz; K.; Landon; M.K.; and Farrar; C.D., 2010, Status and understanding of groundwater quality in the North San Francisco Bay groundwater basins, 2004: California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2010-5089, 65 p., http://doi.org/10.3133/sir20105089 Bennett; G.L.; V; Fram; M.S.; Belitz; K.; and Jurgens; B.C., 2010, Status and understanding of groundwater quality in the northern San Joaquin Basin, 2005: California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2010-5175, 67 p., http://doi.org/10.3133/sir20105175 Jurgens; B.C.; Fram; M.S.; Belitz; K.; Burow; K.R.; and Landon; M.K., 2010, Effects of groundwater development on uranium: Central Valley, California, USA, Ground Water, v. 48, no. 6, p. 913-928, http://doi.org/10.1111/j.1745-6584.2009.00635.x Mathany; T.M.; Burton; C.A.; Land; M.; and Belitz; K., 2010, Groundwater-Quality Data in the South Coast Range-Coastal Study Unit, 2008: Results from the California GAMA Program, U.S. Geological Survey Data Series 504, 106 p., http://doi.org/10.3133/ds504 Kulongoski; J.T.; and Belitz; K., 2010, Groundwater quality in the North San Francisco Bay groundwater basins, California, U.S. Geological Survey Fact Sheet 2010-3060, 4 p., http://doi.org/10.3133/fs20103060 Bennett; G.L.; V; and Belitz; K., 2010, Groundwater quality in the Northern San Joaquin Valley, California, U.S. Geological Survey Fact Sheet 2010-3079, 4 p., http://doi.org/10.3133/fs20103079 Olsen; L.D.; Fram; M.S.; and Belitz; K., 2010, Review of trace-element field-blank data collected for the California Groundwater Ambient Monitoring and Assessment (GAMA) Program, May 2004-January 2008, U.S. Geological Survey Scientific Investigations Report 2009-5220, 47 p., http://doi.org/10.3133/sir20095220 Bennett; G.L.; V; Fram; M.S.; Belitz; K.; and Jurgens; B.C., 2010, Status of groundwater quality in the Southern, Middle, and Northern Sacramento Valley Study Units, 2005-08: California GAMA Priority Basin Project, U.S. Geological Survey Scientific Investigations Report 2011-5002, 119 p., http://doi.org/10.3133/sir20115002 Belitz. K.; and Landon; M.K., 2010, Groundwater Quality in the Central Eastside San Joaquin Valley, California, U.S. Geological Survey Fact Sheet 2010-3001, http://doi.org/10.3133/fs20103001 Belitz; K.; Jurgens; B.; Landon; M.K.; Fram; M.S.; and Johnson; T., 2010, Estimation of aquifer scale proportion using equal area grids: Assessment of regional scale groundwater quality, Water Resources Research, v. 46, no. W11550, http://doi.org/10.1029/2010WR009321 Wright; M.T.; and Belitz; K., 2010, Factors controlling the regional distribution of vanadium in California groundwater, Groundwater, v. 48, no. 4, p. 515-525, http://doi.org/10.1111/j.1745-6584.2009.00666.x Shelton; J.L.; Fram; M.S.; Munday; C.M.; and Belitz; K., 2010, Groundwater-quality data for the Sierra Nevada study unit, 2008: Results from the California GAMA program, U.S. Geological Survey Data Series 534, 82 p., http://doi.org/10.3133/ds534 Johnson; T.D.; and Belitz; K., 2009, Assigning land use to supply wells for the statistical characterization of regional groundwater quality: Correlating urban land use and VOC occurrence, Journal of Hydrology, v. 370, no. 1-4, p. 100-108, http://doi.org/10.1016/j.jhydrol.2009.02.056 Goldrath; D.A.; Wright; M.T.; and Belitz; Kenneth, 2009, Groundwater-quality data in the Colorado River study unit, 2007: Results from the California GAMA program, U.S. Geological Survey Data Series 474, 66 p., http://doi.org/10.3133/ds474 Schmitt; S.J.; Milby Dawson; B.J.; and Belitz; Kenneth, 2009, Groundwater-quality data in the Antelope Valley study unit, 2008: Results from the California GAMA program, U.S. Geological Survey Data Series 479, 79 p., http://doi.org/10.3133/ds479 Ray; M.C.; Kulongoski; J.T.; and Belitz; Kenneth, 2009, Ground-water quality data in the San Francisco Bay study unit, 2007: Results from the California GAMA program, U.S. Geological Survey Data Series 396, 92 p., http://doi.org/10.3133/ds396 Montrella; Joseph; and Belitz; Kenneth, 2009, Ground-water quality data in the Santa Clara River Valley study unit, 2007: Results from the California GAMA Program, U.S. Geological Survey Data Series 408, 84 p., http://doi.org/ Mathany; T.M.; Kulongski; J.T.; Ray; M.C.; and Belitz; Kenneth, 2009, Groundwater-quality data in the South Coast Interior Basins study unit, 2008: Results from the California GAMA program, U.S. Geological Survey Data Series 463, 82 p., http://doi.org/10.3133/ds463 Kent; Robert; and Belitz; Kenneth, 2009, Ground-water quality data in the Upper Santa Ana Watershed Study Unit, November 2006 to March 2007: Results from the California GAMA Program, U.S. Geological Survey Data Series 404, 116 p., http://doi.org/10.3133/ds404 Goldrath; Dara; Wright; Michael T.; and Belitz; Kenneth, 2009, Ground-water quality data in the Coachella Valley study unit, 2007: Results from the California GAMA Program, U.S. Geological Survey Data Series 373, 70 p., http://doi.org/10.3133/ds373 Fram; M.S.; Munday; Cathy; and Belitz; Kenneth, 2009, Groundwater quality data for the Tahoe–Martis study unit, 2007: Results from the California GAMA Program, U.S. Geological survey Data Series 432, 88 p., http://doi.org/10.3133/ds432 Bennett; P.A.; Bennett; G.L.; V; Belitz; Kenneth, 2009, Groundwater quality data in the northern Sacramento Valley, 2007: Results from the California GAMA program, U.S. Geological Survey Data Series 452, 90 p., http://doi.org/10.3133/ds452 Mathany; T.M.; Land; M.; and Belitz; K., 2009, Ground-Water Quality Data in the Coastal Los Angeles Basin Study Unit, 2006: Results from the California GAMA Program, U.S. Geological Survey Data Series 387, http://doi.org/10.3133/ds387 Mathany; T.M.; and Belitz; K., 2009, Groundwater quality data in the Mojave study unit, 2008: Results from the California GAMA Program, U.S. Geological Survey Data Series 440, 81 p., http://doi.org/10.3133/ds440 Shelton; J.L.; Fram; M.S.; and Belitz; Kenneth, 2009, Groundwater-quality data for the Madera-Chowchilla study unit, 2008: results from the California GAMA program, U.S. Geological Survey Data Series 455, 80 p., http://doi.org/10.3133/ds455 Densmore; J.N.; Fram; M.S.; and Belitz; Kenneth, 2009, Ground-water quality data in the Owens and Indian Wells Valleys study unit, 2006: Results from the California GAMA program, U.S. Geological Survey Data Series 427, 86 p., http://doi.org/10.3133/ds427 Shelton; J.L.; Pimentel; I.; Fram; M.S. and Belitz; K., 2008, Ground-Water Quality Data in the Kern County Subbasin Study Unit, 2006—Results from the California GAMA Program, U.S. Geological Survey Data Series 337, 75 p., http://doi.org/10.3133/ds337 Schmitt; S.J.; Fram; M.S.; Milby Dawson; B.J.; Belitz; K., 2008, Ground-water quality data in the middle Sacramento Valley study unit, 2006—results from the California GAMA program, U.S. Geological Survey Data Series 385, 100 p., http://doi.org/10.3133/ds385 Landon; M.K.; and Belitz; K., 2008, Ground-Water Quality Data in the Central Eastside San Joaquin Basin 2006: Results from the California GAMA Program, U.S. Geological Survey Data Series 325, http://doi.org/10.3133/ds325 Land; M. and Belitz; K., 2008, Ground-Water Quality Data in the San Fernando–San Gabriel Study Unit, 2005—Results from the California GAMA Program, U.S. Geological Survey Data Series 356, http://doi.org/10.3133/ds356 Ferrari; M.J.; Fram; M.S.; and Belitz; K., 2008, Ground-Water Quality Data in the Central Sierra Study Unit, 2006—Results from the California GAMA Program, U.S. Geological Survey Data Series 335, http://doi.org/10.3133/ds335 Milby Dawson; B.J.; Bennett V; G.L.; and Belitz; K., 2008, Ground-Water Quality Data in the Southern Sacramento Valley, California, 2005—Results from the California GAMA Program, U.S. Geological Survey Data Series 285, http://doi.org/10.3133/ds285 Burton; C.A.; and Belitz; K., 2008, Ground-Water Quality Data in the Southeast San Joaquin Valley, 2005–2006—Results from the California GAMA Program, U.S. Geological Survey Data Series 351, http://doi.org/10.3133/ds351 Kulongoski; J.T. and Belitz; K., 2007, Ground-water quality data in the Monterey Bay and Salinas Valley Basins, California, 2005: results from the California GAMA Program, U.S. Geological Survey Data Series 258, http://doi.org/10.3133/ds258 Fram; M.S. and Belitz; K., 2007, Ground-water quality data in the Southern Sierra study unit, 2006— Results from the California GAMA program, U.S. Geological Survey Data Series 301, http://doi.org/10.3133/ds301 Bennett V; G.L.; Belitz; K.; and Milby Dawson; B.J., 2006, California GAMA Program: Ground-Water Quality Data in the Northern San Joaquin Basin Study Unit, 2005, U.S. Geological Survey Data Series 196, http://doi.org/10.3133/ds196 Kulongoski; J.T.; Belitz; Kenneth; and Dawson; B.J., 2006, Ground-water quality data in the North San Francisco Bay hydrologic provinces, California, 2004: Results from the California Ground-Water Ambient Monitoring and Assessment (GAMA) Program, U.S. Geological Survey Data Series Report 167, 100 p., http://doi.org/10.3133/ds167 Wright; M.T.; Belitz; K.; and Burton; C.A., 2005, California GAMA Program: Ground-Water Quality Data in the San Diego Drainages Hydrogeologic Province, California, 2004, U.S. Geological Survey Data Series 129, http://doi.org/10.3133/ds129 Densmore-Judy; J.N.; Belitz; K.; Wright; M.T.; Dawson; B.J.M.; Johnson; T.D.; and Hudson; G.B., 2005, Evaluation of volatile organic compounds in two Mojave Desert basins--Mojave River and Antelope Valley--in San Bernardino, Los Angeles, and Kern Counties, June-October 2002, U.S. Geological Survey Scientific Investigations Report 2004-5248, 51 p., http://doi.org/10.3133/sir20045248 Kulongoski; J.T.; and Belitz; K., 2004, Ground-water ambient monitoring and assessment program, U.S. Geological Survey Fact Sheet 2004-3088, 2 p., http://doi.org/10.3133/fs20043088 Wright; M.T.; Belitz; Kenneth; and Johnson; Tyler, 2004, Assessing the susceptibility to contamination of two aquifer systems used for public water supply in the Modesto and Fresno metropolitan areas, California, 2001 and 2002, U.S. Geological Survey Scientific Investigations Report 2004–5149, 35 p., http://doi.org/10.3133/sir20045149 Belitz; K.; Dubrovsky; N.M.; Burow; K.R.; Jurgens; B.C.; and Johnson; T.D., 2003, Framework for a ground-water quality monitoring and assessment program for California, U.S. Geological Survey Water Resources Investigations Report 03-4166, 78 p., http://doi.org/10.3133/wri034166 Johnson; T.D.; and Belitz; K., 2003, Hydrogeologic Provinces for California based upon established groundwater basins and watershed polygons, U.S. Geological Survey Open-File Report 2003-470, http://doi.org/10.3133/ofr03470