Bishop Creek Hydroelectric System, Plant 4, Lightning Arrestor Vault, Bishop Creek, Bishop, Inyo County, CA

Significance: Building 125, Plant 4 (the vault originally containing the Plant 4 lightning arresting equipment), is significant because of its contribution to an understanding of the historic character of the physical environment of the Plant 4 compound and because of its association with the original engineering and construction of the Bishop Creek System. Built in 1905, Plant 4 was the first on the Bishop Creek System, and it remains the system's operating headquarters. The Bishop Creek System is considered significant for its role: (1) in the expansion of hydroelectric generation technology, (2) in the development of eastern California, and (3) in the development of long-distance power transmission and distribution.
Survey number: HAER CA-145-4-I