The collection consists of correspondence, reports, documents, and memoranda, relating to California's Central Valley Project, Lake Tahoe, East Bay Municipal Utility District, Pacific Gas and Electric Company, and public water and power supply system for other California municipalities.

This collection is the result of Frank E. Bonner's work as a consulting engineer for four California water agencies. The materials in this collection consist of water and hydroelectric power studies, maps, designs, computations, drawings, photographs, and reports on various constructed or proposed water developments in the Sierra Nevada.

The collection consists of press releases, speeches (many by former DWR Directors), news clippings, reports, photographs, and miscellaneous memoranda on California water resources development during the period 1950-1965.

The collection consists of correspondence, reports, photographs, and miscellaneous material, relating to various bridges, dams, water supply systems, and hydroelectric power installations in California, including the Hetch Hetchy Project, the Los Angeles Aqueduct, the Golden Gate Bridge, the San Francisco-Oakland Bay Bridge, and to electrical distribution systems in California and British Columbia.

The collection consists of articles, addresses by Hyatt, and clippings, pertaining to dams, water rights, salt water intrusion, hydroelectric power, the California Water Plan, and other aspects of water in California.

The collection consists of reports and papers on hydraulic power systems, hydroelectric developments in California and the West, land reclamation and valuation.

The collection consists of correspondence, reports, documents, and clippings pertaining to Amador Power Project, Sacramento River Deep Water Ship Channel Project, Eel River investigation, Kern River water rights and storage agreement, and the Isabella Project.