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.

Collection also described in Water Resources Reports and Data in the Bernard A. Etcheverry Collection, compiled by Morrill G. Folsom and Wilma J. Woodward. (Water Resources Collections and Archives, University of California, Riverside, 1958).