Supporting groundwater salinity data used for salinity mapping adjacent to the Lost Hills and Belridge oil fields, Kern County, California
Dates
Publication Date
2020-02-25
Start Date
2004-01-01
End Date
2018-12-31
Citation
Ball, L.B., and Davis, T.A., 2020, Supporting groundwater salinity data used for salinity mapping adjacent to the Lost Hills and Belridge oil fields, Kern County, California: U.S. Geological Survey data release, https://doi.org/10.5066/P90SWJAV.
Summary
This dataset contains summarized historical groundwater salinity observations from wells near the Lost Hills and Belridge oil fields in the southwestern San Joaquin Valley, Kern County, California. Total dissolved solids (TDS) concentration, electrical fluid conductivity (EC), and well construction information were aggregated from public data sources and local water management agencies. Trends in total-dissolved solids (TDS) concentrations and fluid conductivity were assessed on a well-by-well basis to develop a dataset of salinity observations to support the interpretation of resistivity data derived from an airborne electromagnetic (AEM) survey flown in October 2016. Results of the trend analysis were used to identify wells that [...]
Summary
This dataset contains summarized historical groundwater salinity observations from wells near the Lost Hills and Belridge oil fields in the southwestern San Joaquin Valley, Kern County, California. Total dissolved solids (TDS) concentration, electrical fluid conductivity (EC), and well construction information were aggregated from public data sources and local water management agencies. Trends in total-dissolved solids (TDS) concentrations and fluid conductivity were assessed on a well-by-well basis to develop a dataset of salinity observations to support the interpretation of resistivity data derived from an airborne electromagnetic (AEM) survey flown in October 2016. Results of the trend analysis were used to identify wells that were stable with respect to three salinity categories between 2004 and 2014: fresh (TDS less than 3,000 mg/L), brackish (TDS between 3,000 and 10,000 mg/L), and saline (TDS greater than 10,000 mg/L). Salinity observations considered to be contemporary with respect to the AEM survey (2015-2018) are also included in this dataset.
These data were aggregated and analyzed for probabilistic groundwater salinity mapping adjacent to the Lost Hills, North Belridge, and South Belridge oil fields as part of the California Oil Gas and Groundwater project and the California State Water Resources Control Board’s Regional Monitoring Program of Water Quality in Areas of Oil and Gas Production. These data serve as an input to determine the regional relationship between groundwater salinity and bulk resistivity derived from an airborne electromagnetic survey collected in 2016 covering the same region.
