Historical 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).
Annual Water Data Reports: Water Years 2005-2011
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 |
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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 |
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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
