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883 datasets

Data Brief: Avoidable Emergency Department Visits Vary Widely Across California

Published by: Department of Health Care Access and Information
Last updated: Saturday, May 30, 2026
File types: XLSX, PDF, ZIP

The data includes a broader range of geographic units of analysis than have previously been made available in HPD public reports, in addition to other...

Early Development Project List

Published by: Caltrans
Last updated: Friday, October 31, 2025
File types: CSV, EXCEL (XLSX)

The project list serves as a resource to the public, stakeholders, and local communities to provide information on ongoing transportation projects cur...

OPA has moved

Published by: California Office of the Patient Advocate
Last updated: Monday, April 7, 2025
File types: HTML, ZIP

OPA has moved! Please update your bookmarks! CalHHS are pleased to announce that the Office of the Patient Advocate is now part of the new Center f...

Stream Habitat Reach Summary - Russian River [ds77]

Published by: California Department of Fish and Wildlife
Last updated: Saturday, May 30, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Results of in-stream habitat surveys (Downie et al 1998 method), summarized by stream reach, for DFG surveys conducted between 1994 and 2001 (inclusiv...

COVID-19 Wastewater Surveillance Data. California

Published by: California State Water Resources Control Board
Last updated: Tuesday, September 10, 2024
File types: CSV, DOCX, XLSX

NOTICE: As of September 6, 2024, the wastewater surveillance dataset will now be hosted on: https://data.chhs.ca.gov/dataset/wastewater-surveillance-d...

i03 Hydrologic Regions

Published by: California Department of Water Resources
Last updated: Saturday, May 30, 2026
File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Description for i03_DAU_county_cnty2018 is as follows:Detailed Analysis Unit-(DAU) Convergence via County Boundary cnty18_1 for Cal-Fire, (*See metada...

California Population Estimates by Age/Race_Ethnicity/Sex at local health jurisdiction level

Published by: California Department of Public Health
Last updated: Saturday, May 30, 2026
File types: CSV, XLSX, ZIP

Age-Race-Sex population estimates and projections for all California Local Health Jurisdictions and counties. Based on combining California Department...

Family PACT Sexually Transmitted Infection Test Volume for Males and Females by Fiscal Years

Published by: California Department of Health Care Services
Last updated: Saturday, May 30, 2026
File types: CSV, ZIP

This data file contains information on the volume of STI tests provided for males and females accessed through the Family Planning, Access, Care, and ...

Chlamydia Screening Percentages for Female Family PACT Clients by Age

Published by: California Department of Health Care Services
Last updated: Saturday, May 30, 2026
File types: CSV, ZIP

This data file contains information on the chlamydia screenings for female clients accessed through the Family Planning, Access, Care, and Treatment ...

Percentage of Family PACT Clients Tested for Selected STIs by Sex

Published by: California Department of Health Care Services
Last updated: Saturday, May 30, 2026
File types: CSV, ZIP

This data file contains information on the female and male clients tested for selected sexually transmitted infections (STIs) accessed through the Fam...