CA Bulletin 118 Groundwater Basins 2003

The dataset is a feature class showing the boundaries of 515 groundwater basins and subbasins as defined by the California Department of Water Resources (Bulletin 118, 2003). The file is in ESRI geodatabase format and is intended for use with compatible GIS software. Groundwater basins are represented as polygon features and designated on the basis of geological and hydrological conditions - usually the occurrence of alluvial or unconsolidated deposits. When practical, large basins are also subdivided by political boundaries, as in the Central Valley. Basins are named and numbered per the convention of the Department of Water Resources.

Data and Resources

Field Value
accessLevel public
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 3130c40e-79e1-4795-8274-09cf324effb6
issued 2018-02-09T03:39:58.000Z
modified 2021-07-29T15:09:48.000Z
publisher California Department of Water Resources
resource-type Dataset
source_datajson_identifier true
source_hash 9b31b8ae8bda70e5d9dc1c4e019dd02e4f412b20
source_schema_version 1.1
theme {"Natural Resources",Water}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • aquifer
  • aquifers
  • b-118
  • b118
  • basin
  • boundaries
  • bulletin-118
  • california
  • california-department-of-water-resources
  • california-natural-resources-agency
  • caopendata
  • ckan
  • department-of-water-resources
  • dept-of-water-resources
  • dwr
  • geo
  • geology
  • geoss
  • ground-water
  • groundwater
  • hydrogeology
  • national
  • north-america
  • sub-basin
  • united-states
isopen False
license_id notspecified
license_title License not specified
maintainer GIS.Admin@DWR
maintainer_email gis@water.ca.gov
metadata_created 2025-11-22T07:06:59.424275
metadata_modified 2025-11-22T07:06:59.424278
notes The dataset is a feature class showing the boundaries of 515 groundwater basins and subbasins as defined by the California Department of Water Resources (Bulletin 118, 2003). The file is in ESRI geodatabase format and is intended for use with compatible GIS software. Groundwater basins are represented as polygon features and designated on the basis of geological and hydrological conditions - usually the occurrence of alluvial or unconsolidated deposits. When practical, large basins are also subdivided by political boundaries, as in the Central Valley. Basins are named and numbered per the convention of the Department of Water Resources.
num_resources 6
num_tags 27
title CA Bulletin 118 Groundwater Basins 2003