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121 datasets

Drinking Water - Open Environmental Data Project - March 23, 2023 Workshop

  • Published by: California State Water Resources Control Board
  • Last updated: Monday, November 10, 2025
  • File types: PDF, HTML, CSV, SHP, ZIP, PPTX

The following datasets related to regulated drinking water system facilities in California have been developed and are available for the purpose of th...

Environmental Monitoring Program: Discrete Water Quality Data

  • Published by: California Department of Water Resources
  • Last updated: Wednesday, April 8, 2026
  • File types: CSV, PDF

The Interagency Ecological Program’s (IEP) Environmental Monitoring Program (EMP) was initiated in compliance with the Water Right Decision D-1379 (no...

Drinking Water - Public Water System Annually Reported Water Production and Delivery Information 2013-2022

  • Published by: California State Water Resources Control Board
  • Last updated: Wednesday, November 27, 2024
  • File types: PDF, ZIP, CSV, XLSX

Amount of water produced by month and by source and the water delivered by type of use and by month for every Public Water System (PWS) reporting. Pub...

Surface Water - Freshwater Harmful Algal Blooms

  • Published by: California State Water Resources Control Board
  • Last updated: Wednesday, April 8, 2026
  • File types: PDF, CSV

Freshwater harmful algal bloom (HAB) data from the Freshwater Harmful Algal Bloom (FHAB) data system. The FHAB data system is the California State Wat...

Urban Water Use Objectives – Relevant Data

  • Published by: California State Water Resources Control Board
  • Last updated: Friday, April 3, 2026
  • File types: CSV

The Making Conservation a California Way of Life regulation requires urban retail water suppliers (URWS) to annually calculate their Urban Water Use O...

Data for Calculating Efficient Outdoor Water Uses

  • Published by: California Department of Water Resources
  • Last updated: Wednesday, April 8, 2026
  • File types: CSV, XLS, XLSX

October 31, 2025 (Final DWR Data) The 2018 Legislation required DWR to provide or otherwise identify data regarding the unique local conditions to ...

Department of Water Resources_COVID-19 Data

  • Published by: California Department of Water Resources
  • Last updated: Wednesday, April 8, 2026
  • File types: XLSX, CSV

Data regarding the impacts of COVID-19 at the Department of Water Resources. Data includes information on the number employees who have tested positiv...

Drinking Water - Public Water System Annually Reported Number of Service Connections Metered and Unmetered by Service Connection Type

  • Published by: California State Water Resources Control Board
  • Last updated: Thursday, May 8, 2025
  • File types: PDF, CSV, ZIP

This dataset includes the number of service connections, categorized by type and metering status, as submitted by public water systems via the electro...

Urban Water Management Plans (UWMP) 2015

  • Published by: California Department of Water Resources
  • Last updated: Wednesday, April 8, 2026
  • File types: PDF, CSV

Urban Water Management Plans (UWMPs) are prepared by California's urban water suppliers to support their long-term resource planning, and ensure adequ...

Water Shrew Range - CWHR M010 [ds1806]

  • Published by: California Department of Fish and Wildlife
  • Last updated: Wednesday, April 8, 2026
  • File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML

Vector datasets of CWHR range maps are one component of California Wildlife Habitat Relationships (CWHR), a comprehensive information system and predi...