USGS - science for a changing world

Historical Water Data

Hydrologic data collected by the USGS is published in annual hydrologic data reports for California, or in interpretive reports. Most of the data are also available on the Web through the USGS National Water Information System (NWISWeb).


2014-present: Water Year Summaries

Each Water-Year Summary for California will be available on-demand as soon as the water-year data are reviewed and approved as final. To retrieve modern Water Year Summaries, please follow these steps:

  1. Visit the USGS Water Data for California page on NWISWeb. Several search options are available from there, including a 'Current Conditions' list of active real-time sites and the NWIS Mapper.
  2. The various search options will help you find individual sites.
  3. Once at the site page, select "Water-Year Summary" from the 'Available data for this site' pull-down menu.
    For example, Site 07300000 water-year summary

Annual Water Data Reports: Water Years 2005-2013

Water Resources Data reports  were published annually for many decades for use by engineers, scientists, managers, educators, and the general public. These static archival products supplemented direct access to current and historical water data provided by the National Water Information System web interface (NWISWeb), the authoritative source for USGS water data.


Hydrologic Data Reports by Volume: Water Years 1975-2004


Year Volume 1: Colorado River Basin, Southern Great Basin from Mexican Border to Mono Lake Basin, and Pacific Slope Basins from Tijuana River to Santa Maria River Volume 2: Pacific Slope Basins from Arroyo Grande to Oregon State Line except Central Valley Volume 3: Southern Central Valley Basins and The Great Basin from Walker River to Truckee River Volume 4: Northern Central Valley Basins and The Great Basin from Honey Lake Basin to Oregon State Line Groundwater Data for California
2004 PDF Water Data Report: 2004 - Volume 1 PDF Water Data Report: 2004 - Volume 2 PDF Water Data Report: 2004 - Volume 3 PDF Water Data Report: 2004 - Volume 4 PDF Groundwater Fact Sheet: 2004
2003 PDF Water Data Report: 2003 - Volume 1 PDF Water Data Report: 2003 - Volume 2 PDF Water Data Report: 2003 - Volume 3 PDF Water Data Report: 2003 - Volume 4 PDF Groundwater Fact Sheet: 2003
2002 PDF Water Data Report: 2002 - Volume 1 PDF Water Data Report: 2002 - Volume 2 PDF Water Data Report: 2002 - Volume 3 PDF Water Data Report: 2002 - Volume 4 PDF Groundwater Fact Sheet: 2002
2001 PDF Water Data Report: 2001 - Volume 1 PDF Water Data Report: 2001 - Volume 2 PDF Water Data Report: 2001 - Volume 3 PDF Water Data Report: 2001 - Volume 4 PDF Groundwater Fact Sheet: 2001
2000 PDF Water Data Report: 2000 - Volume 1 PDF Water Data Report: 2000 - Volume 2 PDF Water Data Report: 2000 - Volume 3 PDF Water Data Report: 2000 - Volume 4 PDF Groundwater Fact Sheet: 2000
1999 PDF Water Data Report: 1999 - Volume 1 PDF Water Data Report: 1999 - Volume 2 PDF Water Data Report: 1999 - Volume 3 PDF Water Data Report: 1999 - Volume 4 PDF Groundwater Fact Sheet: 1999
1998 PDF Water Data Report: 1998 - Volume 1 PDF Water Data Report: 1998 - Volume 2 PDF Water Data Report: 1998 - Volume 3 PDF Water Data Report: 1998 - Volume 4 PDF Groundwater Fact Sheet: 1998
1997 PDF Water Data Report: 1997 - Volume 1 PDF Water Data Report: 1997 - Volume 2 PDF Water Data Report: 1997 - Volume 3 PDF Water Data Report: 1997 - Volume 4 PDF Groundwater Fact Sheet: 1997
1996 PDF Water Data Report: 1996 - Volume 1 PDF Water Data Report: 1996 - Volume 2 PDF Water Data Report: 1996 - Volume 3 PDF Water Data Report: 1996 - Volume 4 PDF Groundwater Fact Sheet: 1996
1995 PDF Water Data Report: 1995 - Volume 1 PDF Water Data Report: 1995 - Volume 2 PDF Water Data Report: 1995 - Volume 3 PDF Water Data Report: 1995 - Volume 4 PDF Groundwater Fact Sheet: 1995
1994 PDF Water Data Report: 1994 - Volume 1 PDF Water Data Report: 1994 - Volume 2 PDF Water Data Report: 1994 - Volume 3 PDF Water Data Report: 1994 - Volume 4 PDF Groundwater Fact Sheet: 1994
1993 PDF Water Data Report: 1993 - Volume 1 PDF Water Data Report: 1993 - Volume 2 PDF Water Data Report: 1993 - Volume 3 PDF Water Data Report: 1993 - Volume 4 PDF Groundwater Data Report: 1993
1992 PDF Water Data Report: 1992 - Volume 1 PDF Water Data Report: 1992 - Volume 2 PDF Water Data Report: 1992 - Volume 3 PDF Water Data Report: 1992 - Volume 4 PDF Water Data Report: 1992 - Groundwater Data
1991 PDF Water Data Report: 1991 - Volume 1 PDF Water Data Report: 1991 - Volume 2 PDF Water Data Report: 1991 - Volume 3 PDF Water Data Report: 1991 - Volume 4 PDF Water Data Report: 1991 - Groundwater Data
1990 PDF Water Data Report: 1990 - Volume 1 PDF Water Data Report: 1990 - Volume 2 PDF Water Data Report: 1990 - Volume 3 PDF Water Data Report: 1990 - Volume 4 PDF Water Data Report: 1990 - Groundwater Data
1989 PDF Water Data Report: 1989 - Volume 1 PDF Water Data Report: 1989 - Volume 2 PDF Water Data Report: 1989 - Volume 3 PDF Water Data Report: 1989 - Volume 4 PDF Water Data Report: 1989 - Groundwater Data
1988 PDF Water Data Report: 1988 - Volume 1 PDF Water Data Report: 1988 - Volume 2 PDF Water Data Report: 1988 - Volume 3 PDF Water Data Report: 1988 - Volume 4 PDF Water Data Report: 1988 - Groundwater Data
1987 PDF Water Data Report: 1987 - Volume 1 PDF Water Data Report: 1987 - Volume 2 PDF Water Data Report: 1987 - Volume 3 PDF Water Data Report: 1987 - Volume 4 PDF Water Data Report: 1987 - Groundwater Data
1986 PDF Water Data Report: 1986 - Volume 1 PDF Water Data Report: 1986 - Volume 2 PDF Water Data Report: 1986 - Volume 3 PDF Water Data Report: 1986 - Volume 4 PDF Water Data Report: 1986 - Groundwater Data
1985 PDF Water Data Report: 1985 - Volume 1 PDF Water Data Report: 1985 - Volume 2 PDF Water Data Report: 1985 - Volume 3 PDF Water Data Report: 1985 - Volume 4  
1984 PDF Water Data Report: 1984 - Volume 1 PDF Water Data Report: 1984 - Volume 2 PDF Water Data Report: 1984 - Volume 3 PDF Water Data Report: 1984 - Volume 4  
1983 PDF Water Data Report: 1983 - Volume 1 PDF Water Data Report: 1983 - Volume 2 PDF Water Data Report: 1983 - Volume 3 PDF Water Data Report: 1983 - Volume 4  
1982 PDF Water Data Report: 1982 - Volume 1 PDF Water Data Report: 1982 - Volume 2 PDF Water Data Report: 1982 - Volume 3 PDF Water Data Report: 1982 - Volume 4  
1981 PDF Water Data Report: 1981 - Volume 1 PDF Water Data Report: 1981 - Volume 2 PDF Water Data Report: 1981 - Volume 3 PDF Water Data Report: 1981 - Volume 4  
1980 PDF Water Data Report: 1980 - Volume 1 PDF Water Data Report: 1980 - Volume 2 PDF Water Data Report: 1980 - Volume 3 PDF Water Data Report: 1980 - Volume 4  
1979 PDF Water Data Report: 1979 - Volume 1 PDF Water Data Report: 1979 - Volume 2 PDF Water Data Report: 1979 - Volume 3 PDF Water Data Report: 1979 - Volume 4  
1978 PDF Water Data Report: 1978 - Volume 1 PDF Water Data Report: 1978 - Volume 2 PDF Water Data Report: 1978 - Volume 3 PDF Water Data Report: 1978 - Volume 4  
1977 PDF Water Data Report: 1977 - Volume 1 PDF Water Data Report: 1977 - Volume 2 PDF Water Data Report: 1977 - Volume 3 PDF Water Data Report: 1977 - Volume 4  
1976 PDF Water Data Report: 1976 - Volume 1 PDF Water Data Report: 1976 - Volume 2 PDF Water Data Report: 1976 - Volume 3 PDF Water Data Report: 1976 - Volume 4  
1975 PDF Water Data Report: 1975 - Volume 1 PDF Water Data Report: 1975 - Volume 2 PDF Water Data Report: 1975 - Volume 3 PDF Water Data Report: 1975 - Volume 4  


Hydrologic Data Reports by Volume: Water Years 1961-1974


Year Volume 1: Colorado River Basin, Southern Great Basin and Pacific Slope Basins excluding Central Valley Volume 2: Northern Great Basin and Central Valley Groundwater Data for California Water Quality Records
1974 PDF Water Data Report: 1974 - Volume 1 PDF Water Data Report: 1974 - Volume 2 PDF Water Data Report: 1974 - Groundwater Available Soon PDF Water Data Report: 1974 - Water Quality
1973 PDF Water Data Report: 1973 - Volume 1 PDF Water Data Report: 1973 - Volume 2 PDF Water Data Report: 1973 - Groundwater Available Soon PDF Water Data Report: 1973 - Water Quality
1972 PDF Water Data Report: 1972 - Volume 1 PDF Water Data Report: 1972 - Volume 2 PDF Water Data Report: 1972 - Groundwater Available Soon PDF Water Data Report: 1972 - Water Quality
1971 PDF Water Data Report: 1971 - Volume 1 PDF Water Data Report: 1971 - Volume 2 PDF Water Data Report: 1971 - Groundwater Available Soon PDF Water Data Report: 1971 - Water Quality
1970 PDF Water Data Report: 1970 - Volume 1 PDF Water Data Report: 1970 - Volume 2 PDF Water Data Report: 1970 - Groundwater Available Soon PDF Water Data Report: 1970 - Water Quality
1969 PDF Water Data Report: 1969 - Volume 1 PDF Water Data Report: 1969 - Volume 2 PDF Water Data Report: 1969 - Groundwater Available Soon PDF Water Data Report: 1969 - Water Quality
1968 PDF Water Data Report: 1968 - Volume 1 PDF Water Data Report: 1968 - Volume 2 PDF Water Data Report: 1966 to 1968 - Groundwater PDF Water Data Report: 1968 - Water Quality
1967 PDF Water Data Report: 1967 - Volume 1 PDF Water Data Report: 1967 - Volume 2 PDF Water Data Report: 1966 to 1968 - Groundwater PDF Water Data Report: 1967 - Water Quality
1966 PDF Water Data Report: 1966 - Volume 1 PDF Water Data Report: 1966 - Volume 2 PDF Water Data Report: 1966 to 1968 - Groundwater PDF Water Data Report: 1966 - Water Quality
1965 PDF Water Data Report: 1965 - Volume 1 PDF Water Data Report: 1965 - Volume 2 PDF Water Data Report: 1965 - Groundwater Available Soon PDF Water Data Report: 1965 - Water Quality
1964 PDF Water Data Report: 1964 - Volume 1 PDF Water Data Report: 1964 - Volume 2 Available Soon PDF Water Data Report: 1964 - Groundwater  Available Soon PDF Water Data Report: 1964 - Water Quality
1963 PDF Water Data Report: 1963 - Volume 1 PDF Water Data Report: 1963 - Volume 2 Available Soon PDF Water Data Report: 1963 - Groundwater Available Soon PDF Water Data Report: 1963 - Water Quality
1962 PDF Water Data Report: 1962 - Volume 1 PDF Water Data Report: 1962 - Volume 2 PDF Water Data Report: 1962 - Groundwater Available Soon  
1961 PDF Water Data Report: 1961 - Volume 1 PDF Water Data Report: 1961 - Volume 2 Available Soon PDF Water Data Report: 1961 - Groundwater Available Soon  


Additional reports and information can be found the USGS Publications Warehouse - Keyword search: California Water Science Center publications. Data and reports can also be requested from our Public Information Officer.

Document Accessibility: Part or all of these reports are presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view. Download the latest version of Adobe Reader, free of charge