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Geochemical and geophysical data for selected wells in and surrounding the South Cuyama oil and gas field The U.S. Geological Survey (USGS) in cooperation with the California State Water Resources Control Board and Bureau of Land Management compiled and analyzed data for mapping groundwater salinity in selected oil and gas fields in California. The data for the South Cuyama oil field includes well construction data, digitized borehole geophysical data, geochemical analyses of water samples from oil and gas wells and groundwater wells, geological formation depths, and the groundwater total dissolved solids (TDS) calculations. These data have been compiled from many sources and span several decades. The well construction data includes attributes such as the date drilling began (spud date), borehole orientation, well depth... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: California, Central Cuyama oil field, Cuyama, Cuyama Valley, Geochemistry, All tags... Geophysics, Hydrogeology, South Cuyama oil field, USGS Science Data Catalog (SDC), Water Resources, borehole geophysics, geochemistry, geological formation, groundwater, groundwater salinity, oil and gas, produced waters, Fewer tags Water chemistry data for samples collected at groundwater sites near the Fruitvale oil field, September 2016–February 2017, Kern County, California (ver. 2.0, July 2020) As part of the California State Water Resources Control Board’s Oil and Gas Regional Monitoring Program , the U.S. Geological Survey collected groundwater and quality-control (QC) samples during September 2016–February 2017 from 14 water-production wells located within a one-mile buffer zone of and in the Fruitvale Oil field, Kern County, California. Samples were analyzed for water-quality indicators, major and minor ions, nutrients, trace elements, volatile organic compounds, naturally occurring radioactive material, geochemical and age-dating tracers, dissolved organic carbon, dissolved standard and hydrocarbon gases, and dissolved noble and atmospheric gases. In total, 235 constituents and water-quality indicators... Categories: Data, Data Release - Revised; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Bakersfield, California, Central Valley, Fruitvale, Fruitvale oil field, All tags... Groundwater, Groundwater, Kern, Kern River, Regional Monitoring Program, USGS Science Data Catalog (SDC), Water quality, aquifer, geochemistry, groundwater, groundwater aquifer, groundwater quality, inlandWaters, none, salinity mapping, water chemistry, Fewer tags Water chemistry data for samples collected at groundwater sites near the Oxnard oil field, June 2017–August 2017, Ventura County, California In cooperation with the California State Water Resources Control Board’s oil and gas Regional Monitoring Program, the U.S. Geological Survey collected and analyzed groundwater and associated quality control (QC) samples during June 2017 – August 2017. Groundwater samples were collected from one public supply well, four monitoring wells, and nine irrigation wells located within a three- mile buffer zone overlying and surrounding the Oxnard oil field administrative boundary in Ventura County, California. Samples were collected using established groundwater data-collection protocols and procedures. Samples were analyzed for water-quality indicators, major and minor ions, nutrients, trace elements, volatile organic... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: California, Geochemistry, Groundwater, Hydrology, Oxnard City, All tags... Oxnard oil field, Regional Groundwater Monitoring Program, USGS Science Data Catalog (SDC), Ventura County, Water Resources, aquifer, geochemistry, groundwater, groundwater aquifer, groundwater quality, inlandWaters, salinity, salinity mapping, water chemistry, Fewer tags Historical produced water chemistry data compiled for the Fruitvale Oilfield, Kern County, California This dataset contains geochemical and other information for 204 samples of produced water from the Fruitvale petroleum field. Produced water is water coexisting with oil and gas. The historical produced water chemistry data was compiled from preexisting datasets and scanned images into a numerical dataset to characterize produced water chemical characteristics. Each sample is identified by its API (American Petroleum Institute) number, excluding the state code, which is 04 in all California wells, latitude and longitude, well name, formation name, perforation interval, and date tested. The geochemical analyses include major ions, some minor ions, total dissolved solids (TDS), pH, specific gravity, resistivity, electrical... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Geochemistry, Hydrogeology, USGS Science Data Catalog (SDC), Water Quality, Water Resources Water chemistry data for samples collected at groundwater sites near the Fruitvale oil field, September 2016–February 2017, Kern County, California Note: This data release has been revised. The updated version is available here: https://doi.org/10.5066/P9DR22GD. As part of the California State Water Resources Control Board’s Regional Groundwater Monitoring Program of Water Quality in Areas of Oil and Gas Production, during September 2016–February 2017, the U.S. Geological Survey collected and analyzed groundwater and associated quality-control (QC) samples from 14 water-production wells located within a three mile buffer zone of and in the Fruitvale Oil field, Kern County, California. Samples were analyzed for water-quality indicators, major and minor ions, nutrients, trace elements, volatile organic compounds, naturally occurring radioactive material, geochemical... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Bakersfield, California, Central Valley, Fruitvale oil field, Geochemistry, All tags... Groundwater, Hydrogeology, Kern County, Kern River, Protected groundwater aquifer, Regional Groundwater Monitoring Program, USGS Science Data Catalog (SDC), Water Quality, Water Resources, geochemistry, inlandWaters, protected groundwater, salinity mapping, water quality, water-quality data, Fewer tags