The U.S. Geological Survey California Water Science Center provides foundational data and scientific analysis to address water issues facing California. Explore your science through the themes and topics listed below.
California Water Data
Basic hydrologic data collection, processing, analysis, dissemination, and archiving are major parts of the California Water Science Center program.
California Water Science Center Laboratories
The California Water Science Center maintains two high quality, state-of-the-art scientific facilities that provide support to areas related to water science. This includes analytical capabilities, scientific support functions, experimental and modeling expertise, and field capabilities.
Science Topics
FAQs
Where can I find information about my local drinking water supply?
The best way to learn about your local drinking water quality is to read the annual drinking water quality report/consumer confidence report that water suppliers now send out by July 1 of each year. The reports are often sent out with water bills, but they may be sent separately. The reports tell where drinking water comes from, what contaminants are in it, and at what levels. The U.S...
Where can I get my well water tested?
Some counties offer free well water testing, so check with your county first. If they don't, use this EPA website to find a list of state-certified laboratories in your area that do water testing, or contact your county or state health department or your State Certification Officer for assistance. Prices will vary depending on the laboratory and the test(s), but most people consider the cost to be...
Where can I get real-time and historical streamflow information?
The best starting point for USGS streamflow data is the interactive National Water Information System (NWIS): Mapper website. Zoom in to your area of interest or use the search options in the left navigation window. The map displays active surface-water sites by default, but you can change the type of water site (surface-water, groundwater, springs, atmospheric) and select to show inactive sites...
Education
USGS Scientists Explain How Aquifer Compaction is Measured
A recent tour of California’s Central Valley given by the nonprofit organization Water Education Foundation included a stop at the USGS California Water Science Center’s extensometer near Porterville.
USGS Participates in 2021 Orange County Youth Environmental Summit
From April 19th through the 23rd, 2021, the USGS California Water Science Center (CAWSC) participated in the first virtual Orange County Youth Environmental Summit (YES). The award-winning program, formerly known as the Children's Water Education Festival, offers 3rd, 4th, and 5th graders opportunities for learning and engagement. Through interactive sessions, YES teaches youth that