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i03 Hydrologic Regions

Published by: California Department of Water Resources
Last updated: Monday, February 17, 2025
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Department of Water Resources Hydrologic Region boundaries derived from i03_DAU_county_cnty2018....

i03 DAU county cnty2018

Published by: California Department of Water Resources
Last updated: Monday, February 17, 2025
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

DWR subdivided California into study areas for planning purposes. The largest study areas are the ten hydrologic regions (HR), corresponding to the St...