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CA SWRCB / DWR Water

Free

CA State Water Resources Control Board plus DWR: drinking-water system area boundaries, Bulletin 118 groundwater basins, and California stream gages. ~5K SABL polygons, ~515 B118 basin/subbasin polygons, and ~2.6K USGS, DWR, and local stream gages.

environmentalwaterdrinking-watergroundwaterstream-gagescaliforniaswrcbdwrbulletin-118
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What you can ask

  • “What does CA SWRCB / DWR Water have for the area or asset I'm working on?”
  • “Pull the most recent CA SWRCB / DWR Water records and put them in a table.”
  • “What does CA SWRCB / DWR Water cover, and how fresh is the data?”

About this source

California State Water Resources Control Board + DWR — drinking water systems + Bulletin 118 basins + stream gages. - searchDrinkingWaterSystems ⭐ ~5K SABL polygons. county UPPERCASE - searchGroundwaterBasins ⭐ ~515 DWR Bulletin 118 basin/subbasin polygons. NO county - searchStreamGages ~2.6K USGS+DWR+local. Filter hasFlow/hasStage/gageStatus upstream quirks: Multi-host — gispublic.waterboards.ca.gov (SWRCB native) for Drinking Water + StreamGages; utility.arcgis.com (DWR utility map) for Bulletin 118. SWRCB Drinking Water OWNER_TYPE_CODE has trailing space ('L ', 'P ' etc) — handler matches both forms. Bulletin 118 is published by DWR, exposed here for one-stop water context.

Connector ID swrcb-water

Provenance

PublisherCA SWRCB / DWR Water
API basehttps://gispublic.waterboards.ca.gov/portalserver/rest/services

Freshness & coverage

FreshnessFreshness not declared
GeographicNot declared
TemporalNot declared
AuthenticationNo credentials required

› Methods (4)

Technical detail for developers: parameters, pagination, units, and freshness per method.

  • searchDrinkingWaterSystems

    read

    SWRCB SABL Drinking Water System Areas (~5K). Filter county/pwsId/federalClassification.

    COUNTY UPPERCASE. OWNER_TYPE_CODE has trailing space — handler matches both.

  • searchGroundwaterBasins

    read

    DWR Bulletin 118 Groundwater Basins (~515). Filter basinNumber/basinName/regionOffice.

    NO county column — basin polygons span multiple counties.

  • searchStreamGages

    read

    CA Stream Gages (~2.6K) USGS+DWR+local. Filter operator/gageStatus/hasFlow/hasStage.

    NO county column — bbox/near only for spatial.

  • getServiceInfo

    read

    Schema + record counts for any of 3 services (CA SWRCB / DWR Water). Pass `service` to scope.