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434 datasets

i08 FaultLines SacramentoValley

Published by: California Department of Water Resources
Last updated: Saturday, July 18, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This data set is a series of polylines denoting fault lines mapped in USGS Publication MF-1790, "Geologic Map of the Late Cenozoic Deposits of the Sac...

i03 Adjudicated Areas

Published by: California Department of Water Resources
Last updated: Saturday, July 18, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Adjudication is a form of groundwater management in California through the courts. When groundwater resources do not meet water demands in an area, la...

i08 GroundwaterLevelChangeSeasonal Points

Published by: California Department of Water Resources
Last updated: Saturday, July 18, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This dataset depicts change in groundwater level at selected monitoring locations (wells) between two specified years, by season. Change values repres...

i08 GroundwaterLevelChangeSeasonal Contours

Published by: California Department of Water Resources
Last updated: Saturday, July 18, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This dataset depicts contours of estimated change in groundwater piezometric surfaces in the unconfined or uppermost semi-confined aquifers, between t...

Estimated Inundation Periods in the Yolo Bypass, 1998 – 2022

Published by: California Department of Water Resources
Last updated: Saturday, July 18, 2026
File types:

Largely supported by the Interagency Ecological Program (IEP), California Department of Water Resources (DWR) has operated a fish monitoring program i...

i15 Parcels SWP

Published by: California Department of Water Resources
Last updated: Saturday, July 18, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This dataset is a compilation of ownership rights represented as parcels owned by the State of California, Department of Water Resources. The associat...

i08 ChicoMonoclineLineaments SacramentoValley

Published by: California Department of Water Resources
Last updated: Saturday, July 18, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This data set is a series of polylines denoting lineaments associated with the Chico Monocline as mapped in USGS Publication MF-1790, "Geologic M...

i17 LeveeCenterlineClass 2012

Published by: California Department of Water Resources
Last updated: Saturday, July 18, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This line feature class represents levee centerlines for 93 Levee Maintenance Agencies/Reclamation Districts in the Sacramento-San Joaquin Delta. The ...

i13 EncroachmentPermits DWR

Published by: California Department of Water Resources
Last updated: Saturday, July 18, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This dataset represents the relative position and extent of encroachment permits created by the Geomatics Branch to support real property management w...

CalSIP Stream Gages

Published by: California Department of Water Resources
Last updated: Saturday, July 18, 2026
File types: ARCGIS GEOSERVICES REST API, CSV

### More information can be found at the CA DWR California Stream Improvement Program webpage at https://water.ca.gov/Work-With-Us/Technical-Assistanc...