See also the list of general California Gazetteers (Place Names).
Western Water (Water Education Foundation) (Periodical Collection TD 201 W4) Bimonthly magazine from the non-profit Water Education Foundation which aims to create a better understanding of water issues and help resolve water resource problems. Thematic issues cover such topics as water supply, water quality, the Colorado River, the Sacramento-San Joaquin Delta, groundwater, and endangered species. The Western Water Magazine Archiveslists all issues from 1997 to the present with online fulltext of selected articles. Articles are searchable from the Water Education Foundation home page.
See Water Feature Place Names for names and location of current and historical water features in California.
Guides and Indexes
Maps and Atlases
Following are directories to governmental and other organizations that focus on water and watersheds:
Following are few major government agencies and organizations:
California Data Exchange Center (CDEC) (California Department of Water Resources) Operates a hydrologic data collection network within California and maintains an extensive database of hydrometeorological information submitted by over 140 state, federal and other cooperating agencies, including the National Weather Service, US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers and Pacific Gas and Electric. Currently there are over 800 operational recording stations in California. The database contains both real-time and historical operational hydrologic data on river stages/flow, river forecasts, reservoir conditions, precipitation, snow depth and water content, temperature, wind direction and speed, and fuel moisture. Use the CDEC Stations Search or the CDEC Station Locator to locate stations by geographic location or type of data collected.
California Environmental Data Exchange Network (CEDEN) Multi-agency repository for data sets on California’s water, including its streams, lakes, rivers and coastal ocean.
California Nevada River Forecast Center (US National Weather Service) Includes precipation data grouped by drainage area for periods covering the past 1, 2, 3, 6, 12, and 24 hours; river stage/flow for the past 5 hours, river flood outlook, and other related data.
California Streamflow Characteristics (from Records through 1968) ( Jorgensen) 1971 (U.S. Geological Survey Open File Report) (Docs I 19.76: 1971-6/3) Summarizes streamflow data for individual recording stations in California from the earliest period of record (early 1900's in some cases) to 1968. For each station gives duration tables of daily discharge, highest and lowest mean discharge each year for specified consecutive periods, and statistics for monthly and annual mean discharges.
California Water Supply Outlook (US Natural Resources Conservation Service) Monthly reports generated between January and May for California that summarize the current state of snowpack, precipitation, reservoir and streamflow conditions and makes projections for future streamflow by river basin.
Data for Springs in the Colorado Desert Area of California (Berkstresser) 1969 (US Geological Survey Open File Report)
Data for Springs in the Northern Coast Ranges and Klamath Mountains of California(Berkstresser) 1968 (US Geological Survey Open File Report 68-9) Lists the results of chemical analyses of water from 201 springs. Spring data is presented alphabetically by county, and within each county, numerically by township and range.
Data for Springs in the Southern Coast, Transverse, and Peninsular Ranges of California(Berkstresser) 1968 (US Geological Survey Open File Report 68-10) Lists the results of chemical analyses of water from 184 springs. Spring data is presented alphabetically by county, and within each county, numerically by township and range.
EPA-Established TMDLs (US Environmental Protection Agency Region 9) (print copies of local watersheds available in the Humboldt County Collection) Contains links to California watersheds where Total Maximum Daily Loads (TMDLs) have been prepared for sediment load and temperature. A TMDL is a quantitative assessment of water quality problems, contributing sources, and load reductions or control actions needed to restore and protect a specific water body. A TMDL specifies the maximum amount of a pollutant that a water body can receive and still meet water quality standards and allocates pollutant loads among point and nonpoint sources. For additional information see Total Maximum Daily Load (TMDL) Program.
Groundwater Ambient Monitoring & Assessment Program (California State Water Resources Control Board) Collects data by testing untreated, raw water in different types of wells for naturally-occurring and man-made chemicals and compiles these test results with existing groundwater quality data from other agencies into a publicly-accessible database, GeoTracker GAMA.
Hydro-Climatic Data Network (HCDN): Streamflow Data Set, 1874-1988: California (Slack, Lumb, and Landwehr) 1993 (USGS Water Resources Investigations Report 93-4076) USGSstreamflow dataset developed for studying the variation in surface-water conditions as it relates to climate variation. Contains daily values, monthly mean values, and yearly mean values in tabular format for individual stations that were chosen because of their relative freedom from confounding anthropogenic influences. There are 1659 total US stations, including 118 in California and 28 in northwestern California.
Instantaneous Data Archive (IDA): California (US Geological Survey) Database containing instantaneous discharge (streamflow) data records from USGS gaging sites at the time intervals at which it was collected, typically 15 minute to hourly intervals. Available data extends back to around 1990. These instantaneous data records have typically been processed into and published as various daily values, such as the daily maximum, minimum, and/or mean.
Integrated Water Resources Information System (IWRIS) (Californnia Department of Water Resources) Web-based geographic information system that allows users to access, integrate, query, and visualize multiple sets of data. The database includes Water Data Library data,California Data Exchange Center data, United States Geological Survey streamflow data, Local Groundwater Assistance Grants (AB303) data, and data from local agencies.
My Water Quality (California Water Quality Monitoring Council) Presents California water quality monitoring data and assessment information in the following areas: safety of drinking water, safety of swimming water, safety of fish and shellfish for eating, health of aquatic ecosystems.
STORET (US Environmental Protection Agency) Repository of biological, chemical, and physical water quality monitoring data on surface and ground water collected by federal, state and local agencies, Indian Tribes, volunteer groups, academics, and others. Records date from the early 20th century and are contained in two databases--a pre 1999 legacy database and a modern database for post 1999 data. The search interface allows you to search by county, geographic coordinates, or watershed basin; data type; date; and organization. The downloaded raw data can be imported into Excel.
StreamStats (US Geological Survey) Web-based GIS that provides users with access to analytical tools for water-resources planning and management and for engineering applications. Users can obtain streamflow statistics, drainage-basin characteristics and other information for specific sites using an interactive map. If a user selects the location of a USGS data-collection station, StreamStates will provide a list of published information for the station. If a user selects a location where no data are available (an ungaged site), StreamStats will delineate the drainage-basin boundary, measure basin characteristics and estimate streamflow statistics for the site. The California application provides peak-flow statistics with annual exceedance probabilities of 50, 20, 10, 4, 2, 1, and 0.002 percent. These peak flows have recurrence intervals of 2-, 5-, 10-, 25-, 50-, 100-, and 500-year floods.
Surf Your Watershed (US Environmental Protection Agency) Each watershed has links to sites that include information on watershed health, air quality, toxic waste, water quality, stream flow, water use, land characteristics, and environmental organizations. Locate watersheds by zip code, county, placename, or watershed.
USGS Water Data for California (US Geological Survey) Part of the National Water Information System (NWIS). Major database of real time and historical surface water, ground water, and water quality records for California. Use the Site Inventory for California to find sites by county, hydrologic unit, geographic coordinate, site name and other parameters; or use the interactive mapper to find sites.
California precipitation data was first collected in 1849, stream gage data in 1878, and the measurement of groundwater levels in the early 1900's. Index to Sources of Hydrologic Datacontains a comprehensive list of hydrologic data stations. The data complements hydrologic data available from the U.S. Geological Survey and the National Weather Service/National Climatic Data Center.
The HSU Library has the following hydrologic data compilations in print format: