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410 datasets

California's Groundwater Update 2025 (Bulletin 118)

Published by: California Department of Water Resources
Last updated: Monday, December 22, 2025
File types: PDF

California's Groundwater: Bulletin 118 Updates (CalGW Updates) are California's foremost technical publications on groundwater in the state. The Depar...

California's Groundwater Live Supporting Data

Published by: California Department of Water Resources
Last updated: Monday, December 22, 2025
File types: HTML, JPEG, PDF, DOCX, ZIP

This dataset contains files and materials in support of the California's Groundwater Live website. California's Groundwater Live is a user-friendly pl...

California's Groundwater Semi-Annual Conditions Updates

Published by: California Department of Water Resources
Last updated: Monday, December 22, 2025
File types: PDF

Semi-annual Conditions Updates are more frequent supplements to the comprehensive 5-year CalGW Updates, and also provide additional perspective on the...

Bulletin 118 Update 2003 - Basin Reports (formerly known as Basin Descriptions)

Published by: California Department of Water Resources
Last updated: Monday, December 22, 2025
File types: PDF

This dataset includes the basin reports for the 515 groundwater basins developed as part of Bulletin 118 Update 2003. The reports include descriptions...

California Groundwater Elevation Monitoring (CASGEM) Program

Published by: California Department of Water Resources
Last updated: Monday, December 22, 2025
File types: PDF

Since 2009, the [California Statewide Groundwater Elevation Monitoring (CASGEM) Program](https://water.ca.gov/programs/groundwater-management/groundwa...

Annual Precipitation Data for Northern California 1944-Current

Published by: California Department of Water Resources
Last updated: Monday, December 22, 2025
File types: CSV, PDF

The California Department of Water Resources (DWR), Northern Region Office (NRO), maintains 33 precipitation stations that were installed starting in ...

Water quality, fish, phytoplankton, clams and zooplankton monitoring to support the Summer-Fall Suisun Marsh Salinity Control Gates Action

Published by: California Department of Water Resources
Last updated: Monday, December 22, 2025
File types:

The Suisun Marsh Salinity Control Gates (SMSCG) have the potential to increase low-salinity-zone habitat for endangered Delta Smelt (Hypomesus transpa...

Sacramento River Geomorphic Atlas, Red Bluff to Colusa, California (1896–2012)

Published by: California Department of Water Resources
Last updated: Monday, December 22, 2025
File types: PDF

The Sacramento River Geomorphic Atlas (1896–2012) (SRGA) documents the geomorphology of the middle reach of the Sacramento River from Red Bluff to Col...

Interagency Ecological Program: Discrete dissolved oxygen monitoring in the Stockton Deep Water Ship Channel, collected by the Environmental Monitoring Program, 1997-2018

Published by: California Department of Water Resources
Last updated: Monday, December 22, 2025
File types:

The Interagency Ecological Program’s (IEP) Environmental Monitoring Program (EMP) has historically monitored discrete water quality and nutrients in t...

Paleo-Dendrochronological "Tree-Ring" Hydroclimatic Reconstructions for Northern and Southern California River Basins

Published by: California Department of Water Resources
Last updated: Monday, December 22, 2025
File types: PDF, CSV, ZIP

### Background Tree-ring chronologies allow assessment of hydrologic variability over centuries to millennia, gives historic context for assessing re...