Name/Title
Granite Rock/DerricksEntry/Object ID
TP6819Description
A black and white photo of Relief Dam showing derricks near granite rock wall. Work being done by the Union Construction Company, Vallecito, Ca.
Note: Relief Dam is a rockfill dam on Summit Creek, a tributary of the Middle Fork Stanislaus River, in Tuolumne County, California. The dam is part of the Spring Gap-Stanislaus Hydroelectric Project, and is owned and operated by Pacific Gas and Electric (PG&E).
Type: PaperCollection
TCHS - Tuolumne County Historical SocietyLexicon
Search Terms
Dam, Construction, Companies, Rivers, Dams, Construction, Relief Dam, Union Construction Company, Vallecito, Ca., Stanislaus River, Econ/Industry, Union Construction Co