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 and reports concerning the Colorado River and flooding in the Imperial Valley, the Hetch Hetchy Project, Los Angeles water supply, the Southern Sierra Power Company, the salinity of San Francisco Bay and Sacramento-San Joaquin River Delta, flood control and irrigation projects, groundwater, and land appraisal throughout California and other western states.