The collection consists of notes, memoranda, correspondence, speeches, reports, maps, photographs, and records relating to the U.S. Bureau of Reclamation, Central Valley Project, Sacramento-San Joaquin Delta Region, salinity, the Delta hearings, water rights, acreage limitations, the Reber Plan, fish and wildlife, USBR/CVP contracts and leases, floods and flood control, and miscellaneous power and energy issues.

The collection consists of correspondence, reports, hydrological data, maps and memoranda pertaining to reservoirs, canals, water delivery systems, flood control and irrigation projects, water supply and land appraisals throughout California and southern Oregon, with particular reference to units of the Central Valley Project.

The collection consists of reports, legal opinions, and comments concerning the Central Valley Project, water districts and reclamation districts, and water rights on the San Joaquin River and elsewhere in California.

The collection consists of the United States Bureau of Reclamation contracts with California water districts, irrigation districts, wildlife refuges, and municipalities.