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Groundwater-quality data and ancillary data for selected wells in the San Joaquin Valley, California, 1900-2015


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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,


This report provides a full digitization of historic groundwater-quality and depth-to-water data from Mendenhall and others (1916) Water Supply Paper 398, “Ground Water in San Joaquin Valley, California” in a modern format suitable for further analysis of California’s water supply resources. Included are geochemical data for over 400 wells collected by Mendenhall in the fall of 1910, as well as depth-to-water and well construction information from over 4000 wells compiled by his team from over 15 years of well surveys throughout the San Joaquin Valley. Additionally, these data provide geospatial and geochemical data for sampled wells in California's San Joaquin Valley (SJV) in support of the publication: Jeffrey A. Hansen, Bryant C. [...]

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Point of Contact :
Jeffrey A Hansen
Originator :
Jeffrey A Hansen, Bryant C Jurgens, Miranda S Fram
Metadata Contact :
Jeffrey A Hansen
USGS Mission Area :
Water Resources
SDC Data Owner :
California Water Science Center
Distributor :
U.S. Geological Survey - ScienceBase

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The purpose of this report is to provide the datasets used for comparison of groundwater salinity in 1910 in the San Joaquin Valley, California to groundwater salinity in 1993-2015. These datasets are used in the following publication: Jeffrey A. Hansen, Bryant C. Jurgens, Miranda S. Fram, Quantifying anthropogenic contributions to century-scale groundwater salinity changes, San Joaquin Valley, California, USA, Science of The Total Environment, Volume 642, 15 November 2018, Pages 125-136, ISSN 0048-9697,

Additional Information


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DOI doi:10.5066/F7319T3K

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