Geology & Earth Sciences

There is a draft of the 2018 plan, and links to older editions.

Includes the Delta Plan, amended April 26, 2018. The Delta Plan includes 14 regulatory policies and 95 recommendations. Collectively, these policies and recommendations address current and predicted challenges related to the Delta’s ecology, flood management, land use, water quality, and water supply reliability.

Links to California water resources: agencies and data.

Basic explanation of 16 parts of the water cycle. Created by the USGS for schools. A good starting point.

A 2008 report from the CA Legislative Analyst's Office.

Loaded with information and links. Use it to find information, or just ideas for for research.

Describes the location, extent, geologic and hydrologic characteristics of important aquifers. Online edition includes California chapter. Or take a look at the print version:
2 North Atlas G 1526 .C3 P536 1995

Issued by the CA DWR (Dept. of Water Resources). Indexes the Bulletin series of the agency. Covers every aspect of water in Califonia (ground, surface, dams, pollution, economic, social effects, etc.)
2 North Ref Desk Collection TD 224 .C2 A3 1922-1999.

Access to the Dept. of Water Resources hydrologic data including river conditions, snow pack, river stages/flows, water supply, weather forecasts and more.

Data from the EPA for Pacific Southwest, Region 9. Use this site to find the pollutants in waterways in California.

Links to many drinking water related sites, including contamination and regulation.

The USGS investigates the occurrence, quantity, quality, distribution, and movement of surface and underground waters from all 50 states and the District of Columbia, Puerto Rico, the Virgin Islands, Guam, American Samoa and the Commonwealth of the Northern Mariana Islands