California Code, Government Code - GOV § 14715

The Veterans' Home of California, for all purposes including irrigation and domestic, shall have the first and prior right to all available water stored in Rector Dam on state property in Napa County.  Said right shall be prior to any allocation of said waters for the use of any other state institutions, including the State Game Farm and the Napa State Hospital.  In the event that there is more water available than necessary to meet the requirements of the Veterans' Home of California, the department may take and conduct from the dam such quantity of surplus water as may be determined by the Department of Water Resources to be necessary for the use of the Napa State Hospital and other state establishments located in the County of Napa, including the State Game Farm, and rights-of-way may be acquired, pursuant to the Property Acquisition Law, Part 11 (commencing with Section 15850) of Division 3 of Title 2, by purchase, lease, or condemnation for that purpose.