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Potential Explanatory Variables for Groundwater Quality in the Redding-Red Bluff Shallow Aquifer Assessment Study Unit, 2018-2019: California GAMA Priority Basin Project

Metadata Updated: October 28, 2023

This data release codifies and attributes explanatory variables that could potentially influence groundwater quality at 50 groundwater wells used for domestic water supply and 43 groundwater sites used for public water supply in the U.S. Geological Survey’s Priority Basin Project Redding-Red Bluff shallow aquifer (NSV-SA) study unit in 2018-2019 and Northern Sacramento Valley public-supply (NSV-PA) study unit in 2007, respectively. Water quality from domestic and public-supply groundwater sites was assessed as part of the California State Water Resources Control Board’s Groundwater Ambient Monitoring and Assessment (GAMA) program. The NSV-SA and NSV-PA study units include domestic and public-supply wells within sedimentary aquifers of the Central Valley province of California in Shasta and Tehama Counties. Study design and site selection for the NSV-SA and NSV-PA study units are detailed by Shelton and others (2020) and Bennett and others (2007), respectively. Potential explanatory factors are attributed to groundwater sites relating to: aquifer lithology, land use (percent agricultural, urban, and natural land use), septic tank and underground storage densities, distance to geothermal sites, hydrologic conditions (aridity index, elevation of the groundwater site), well construction (well depth, depth to the top of the open or perforated interval), groundwater age (tritium, carbon-14 and age classification), geochemical condition (pH, dissolved oxygen, groundwater redox classification). This data release contains a tab-delimited text file containing locations and potential explanatory factors for domestic groundwater sites (Table 1), a tab-delimited text file containing locations and potential explanatory factors for public groundwater sites (Table 2), and a data dictionary. These data support the following publications: Harkness, J.S.., 2022, Status and understanding of groundwater quality in the northern Sacramento Valley domestic-supply aquifer study unit, 2018–19—California GAMA Priority Basin Project: U.S. Geological Survey Scientific Investigations Report

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Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Created Date June 1, 2023
Metadata Updated Date October 28, 2023

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date October 28, 2023
Publisher U.S. Geological Survey
Identifier USGS:62509932d34e21f8276d09b8
Data Last Modified 20220707
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context
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Catalog Describedby
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Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -122.6019,39.9329,-121.9867,40.6556
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash ad5526b56b520d8ee5ed2263f8622d9369ba81b24b9dd3c8b475941cb9a4f26b
Source Schema Version 1.1
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