Historical groundwater chemistry data compiled for the San Ardo Oil Field and vicinity, Monterey County, central California

This digital dataset contains historical geochemical and other information for 255 samples of groundwater from 41 wells located within 3-miles of the San Ardo Oil Field in Monterey County, central California. Data were compiled from preexisting datasets into two separate data files described as follows: 1) a summary data file identifying each well, it's location, basic well construction, the number of chemistry samples and period of record, and data sources; and 2) a data file of geochemistry analyses for selected water-quality indicators, major and minor ions, nutrients, and trace elements, plus parameter code and (or) method, reporting level, reporting level type, and supplemental notes. A data dictionary was created to describe the geochemistry data file and is provided with this data release.

Data and Resources

Field Value
accessLevel public
bureauCode {010:12}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier USGS:5f4c147e82ce4c3d12317ee6
metadata_type geospatial
modified 20210331
old-spatial -120.9575, 35.8790, -120.7441, 36.0384
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 6d7320eef8e6d378e71741cbe58268b60d8a25b6
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-120.9575, 35.8790], [-120.9575, 36.0384], [ -120.7441, 36.0384], [ -120.7441, 35.8790], [-120.9575, 35.8790]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • ckan
  • environment
  • geo
  • geochemistry
  • geoscientificinformation
  • geoss
  • groundwater
  • inorganic-constituents
  • national
  • north-america
  • oil-field
  • total-dissolved-solids
  • united-states
  • usgs-5f4c147e82ce4c3d12317ee6
  • water-quality
  • water-well
isopen False
license_id notspecified
license_title License not specified
maintainer Loren F Metzger
maintainer_email lmetzger@usgs.gov
metadata_created 2025-11-20T14:05:54.028406
metadata_modified 2025-11-20T14:05:54.028411
notes This digital dataset contains historical geochemical and other information for 255 samples of groundwater from 41 wells located within 3-miles of the San Ardo Oil Field in Monterey County, central California. Data were compiled from preexisting datasets into two separate data files described as follows: 1) a summary data file identifying each well, it's location, basic well construction, the number of chemistry samples and period of record, and data sources; and 2) a data file of geochemistry analyses for selected water-quality indicators, major and minor ions, nutrients, and trace elements, plus parameter code and (or) method, reporting level, reporting level type, and supplemental notes. A data dictionary was created to describe the geochemistry data file and is provided with this data release.
num_resources 2
num_tags 18
title Historical groundwater chemistry data compiled for the San Ardo Oil Field and vicinity, Monterey County, central California