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692 datasets

i04 CIMIS Reference Evapotranspiration Zones v1999

Published by: California Department of Water Resources
Last updated: Friday, May 22, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

The ETo Zones Map allows users to view the grass-reference evapotranspiration (ETo) Zones for the State of California. The map was developed by DWR an...

DSM2 8.2.0 beta1

Published by: California Department of Water Resources
Last updated: Friday, May 22, 2026
File types: TXT

DSM2 V8.2.0b1 release applies the daily DCD v1.0 channel depletions. Main differences with DSM2 V8.1.2 release: 1. DCD v1.0 daily channel d...

DMUG December 7, 2021

Published by: California Department of Water Resources
Last updated: Friday, May 22, 2026
File types: DOCX, MP4

presentations...

DSM2 2022.01 Historical Update

Published by: California Department of Water Resources
Last updated: Friday, May 22, 2026
File types: ZIP

DSM2 historical data updated through December 31, 2021...

Cross Section Development Program NAVD88 Update

Published by: California Department of Water Resources
Last updated: Friday, May 22, 2026
File types: PDF

Cross Section Development Program (CSDP) is a tool used to develop cross-sectional information for the hydrodynamic model DSM2. DSM2 has adopted the N...

Statewide Irrigation Systems Methods Survey

Published by: California Department of Water Resources
Last updated: Friday, May 22, 2026
File types: XLSM

Beginning in 1991 and approximately every 5 - 10 years an irrigation questionnaire form is distributed by mail and online survey to California growers...

i12 Flood Bypasses 2012

Published by: California Department of Water Resources
Last updated: Friday, May 22, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This feature class is a vector file containing polygons that represent the flood control bypasses of the Sacramento and San Joaquin Rivers. Bypasses c...

i12 Flood Bypasses 2014

Published by: California Department of Water Resources
Last updated: Friday, May 22, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This feature class is a vector file containing polygons that represent the flood control bypasses of the Sacramento and San Joaquin Rivers. Bypasses c...

i16 Census BlockGroup EconomicallyDistressedAreas 2023

Published by: California Department of Water Resources
Last updated: Friday, May 22, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

This is a copy of the statewide Census Block Group GIS Tiger file. The IRWM web based EDA mapping tool uses this GIS layer. Created by joining ACS 201...

i17 Delta Levees Anatomy 2017

Published by: California Department of Water Resources
Last updated: Friday, May 22, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

The use of high-resolution LiDAR, and the products derived from it, allow for levee anatomy to be captured for the surveyed area. The resulting data i...