California Department of Water Resources
California Data Exchange Center and SGMA groundwater data
California reservoir storage, snowpack and snow water equivalent surveys, river stage and the groundwater level and subsidence monitoring required under the Sustainable Groundwater Management Act.
Rights
- Commercial reuse
- Yes
- Redistribution
- Yes
- Derivative use
- Yes
- Attribution required
- No
- Restrictions
- Applies to material authored by US federal agencies. Third-party material carried within a federal product may be separately protected.
- Terms last checked
- 23 August 2026
Access and coverage
- Publisher
- California Department of Water Resources
- Website
- https://cdec.water.ca.gov/
- Geographic coverage
- California
- Temporal coverage
- 1900 onwards
- Update frequency
- daily
- Formats
- csv, json, api
- Bulk download
- Available
- Registration required
- No
- Cost to Hydrionis
- Free
- Domains
- reservoir, snow ice, groundwater, drought