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Compilation of Public-Supply Well Construction Depths in California


Publication Date
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Levy, Z.F., and Borkovich, J.G., 2022, Compilation of Public-Supply Well Construction Depths in California: U.S. Geological Survey data release,


This data release is a compilation of construction depth information for 12,383 active and inactive public-supply wells (PSWs) in California from various data sources. Construction data from multiple sources were indexed by the California State Water Resources Control Board Division of Drinking Water (DDW) primary station code (PS Code). Five different data sources were compared with the following priority order: 1, Local sources from select municipalities and water purveyors (Local); 2, Local DDW district data (DDW); 3, The United States Geological Survey (USGS) National Water Information System (NWIS); 4, The California State Water Resources Control Board Groundwater Ambient Monitoring and Assessment Groundwater Information System [...]


Point of Contact :
Zeno F Levy, California Water Science Center
Originator :
Zeno F Levy, Joseph G Borkovich
Metadata Contact :
Zeno F Levy
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
SDC Data Owner :
California Water Science Center
USGS Mission Area :
Water Resources

Attached Files

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WellConstructionSourceData_Local.txt 31.99 KB text/plain
WellConstructionSourceData_DDW.txt 322.94 KB text/plain
WellConstructionSourceData_NWIS.txt 109.37 KB text/plain
WellConstructionSourceData_SWRCB.txt 192.82 KB text/plain
WellConstructionSourceData_WCR.txt 75.06 KB text/plain
WellConstructionCompilation_ToP.txt 351.3 KB text/plain
WellConstructionCompilation_BOT.txt 357.34 KB text/plain
WellConstructionCompilation_Summary.txt 454.59 KB text/plain


The purpose of this data release is to compile and summarize public-supply well (PSW) construction depth data from multiple sources. Summary construction data are inconclusive where multiple data sources report differing construction depths. Summary construction depth data can be used to characterize aquifer depth zones used for public drinking-water supply for use in various water-resource investigations.



  • USGS California Water Science Center
  • USGS Data Release Products



Additional Information


Type Scheme Key
DOI doi:10.5066/P90OHVIC

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