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512 datasets, newest updates first
- California Open Data
Surface Water - Freshwater Harmful Algal Blooms
California State Water Resources Control BoardUpdated 14 Nov 2026
Freshwater harmful algal bloom (HAB) data are sourced from the Freshwater Harmful Algal Bloom (FHAB) data system. The FHAB data system is the California State Water Resources Control Board’s platform for data and information voluntarily rep …
- CSV
- California Open Data
Surface Water - Fecal Indicator Bacteria Monitoring Results
California State Water Resources Control BoardUpdated 13 Nov 2026
This dataset contains fecal indicator bacteria (FIB) monitoring results collected from surface waters across California. It includes results for _Escherichia coli_ (E. coli), enterococci, fecal coliforms, and total coliforms - key indicator …
- CSV
- California Open Data
Vehicle Fuel Type Count by Zip Code
California Department of Motor VehiclesUpdated 13 Nov 2026
These datasets provide vehicle counts broken down by ZIP code, model year, fuel type, make and duty (light/heavy) of registered vehicles with specific as of dates.
- CSV
- California Open Data
Housing Element Compliance Report
California Department of Housing and Community DevelopmentUpdated 13 Nov 2026
California requires that all local governments (cities and counties) adequately plan to meet the housing needs of everyone in the community. California’s local governments meet this requirement by adopting housing plans as part of their “ge …
- CSV
- California Open Data
Drinking Water - SAFER Dashboard Failing and At-Risk Drinking Water Systems
California State Water Resources Control BoardUpdated 13 Nov 2026
The Division of Drinking Water (DDW) identifies Failing and At-Risk community water systems and K-12 non-transient, non-community schools. This information is displayed online in the Safe and Affordable Funding for Equity and Resilience (SA …
- EXCEL (XLSX)
- CSV
- California Open Data
DISCONTINUED - California Water Rights Measurement Devices (Reported in Annual Report)
California State Water Resources Control BoardUpdated 12 Nov 2026
This dataset hasn't been updated since July 2025, and it no longer matches the State Water Board's current water rights records. This dataset will be removed in the near future to reduce confusion. We're replacing these older files with new …
- CSV
- XLSX
- DOCX
- California Open Data
DISCONTINUED - California Water Rights Petitions LIST
California State Water Resources Control BoardUpdated 12 Nov 2026
This dataset hasn't been updated since July 2025, and it no longer matches the State Water Board's current water rights records. This dataset will be removed in the near future to reduce confusion. We're replacing these older files with new …
- CSV
- California Open Data
DISCONTINUED - California Water Rights Annual Reports (Detail Summary List)
California State Water Resources Control BoardUpdated 12 Nov 2026
This dataset hasn't been updated since July 2025, and it no longer matches the State Water Board's current water rights records. This dataset will be removed in the near future to reduce confusion. We're replacing these older files with new …
- CSV
- XLSX
- DOC
- California Open Data
DISCONTINUED - California Water Rights Uses and Seasons
California State Water Resources Control BoardUpdated 12 Nov 2026
This dataset hasn't been updated since July 2025, and it no longer matches the State Water Board's current water rights records. This dataset will be removed in the near future to reduce confusion. We're replacing these older files with new …
- CSV
- XLSX
- DOCX
- California Open Data
DISCONTINUED - California Water Rights Irrigation Use Annual Reports
California State Water Resources Control BoardUpdated 12 Nov 2026
This dataset hasn't been updated since July 2025, and it no longer matches the State Water Board's current water rights records. This dataset will be removed in the near future to reduce confusion. We're replacing these older files with new …
- CSV
- XLSX
- DOC
- California Open Data
Discontinued - California Water Rights Water Use Reported
California State Water Resources Control BoardUpdated 12 Nov 2026
This dataset hasn't been updated since July 2025, and it no longer matches the State Water Board's current water rights records. This dataset will be removed in the near future to reduce confusion. We're replacing these older files with new …
- XLSX
- ZIP
- CSV
- DOCX
- California Open Data
CALAND version 3
California Natural Resources AgencyUpdated 12 Nov 2026
The California Natural and Workings Lands Carbon and Greenhouse Gas Model (CALAND) v3 estimates the effects of more than 16 specific land management activities on California’s landscape carbon budget. The model is based on field data from C …
- WEBSITE
- ZIP
- California Open Data
Open Data Documentation
California Department of Parks and RecreationUpdated 12 Nov 2026
Useful information and links for navigating this site, understanding and utilizing Open Data
- California Open Data
Climate Change Projections for Water Storage Investment Program (WSIP)
California Water CommissionUpdated 12 Nov 2026
To aid applicants with quantification and monetization of benefits of proposed water storage projects per Chapter 8 of Proposition 1 (Water Code section 79750 et. seq.), the California Water Commission (Commission) developed a Technical Ref …
- ZIP
- California Open Data
Independent Medical Review (IMR) Determinations, Trend
California Department of Managed Health CareUpdated 12 Nov 2026
This data is from the California Department of Managed Health Care (DMHC). It contains all decisions from Independent Medical Reviews (IMR) administered by the DMHC since January 1, 2001. An IMR is an independent review of a denied, delayed …
- CSV
- ZIP
- California Open Data
Enforcement Actions, Trend
California Department of Managed Health CareUpdated 12 Nov 2026
This data is from the Office of Enforcement in the California Department of Managed Health Care (DMHC). It contains enforcement actions with the information of the organization type, organization name, action date, penalty amount, related p …
- CSV
- ZIP
- California Open Data
Rate Review Detail, Trend
California Department of Managed Health CareUpdated 12 Nov 2026
This data is from the California Department of Managed Health Care (DMHC). It contains all information on health plan proposed premium rates filed with the DMHC since January 1, 2011. The DMHC is committed to providing the public with infor …
- CSV
- ZIP
- California Open Data
Quarterly Provider Complaints
California Department of Managed Health CareUpdated 12 Nov 2026
This data is from the California Department of Managed Health Care (DMHC). It contains all Provider complaints received by the DMHC since January 1, 2019.
- CSV
- ZIP
- California Open Data
Spatial and Economic Human Uses, California South Coast MPA Baseline Study, 1992 to 2012
California Ocean Protection CouncilUpdated 12 Nov 2026
This study addresses the South Coast MPA Baseline Program objectives by describing human use patterns across the study region and establishing initial data points for long-term tracking of conditions and trends in the South Coast. This stud …
- ZIP
- CSV
- XML
- California Open Data
Sandy Beach Ecosystems, California South Coast MPA Baseline Study, 2011 to 2013
California Ocean Protection CouncilUpdated 12 Nov 2026
Sandy beaches are among the most intensely used coastal ecosystems for human recreation and are vitally important to coastal economies. Beaches support unique biodiversity and provide essential ecosystem functions and services including end …
- ZIP
- CSV