Big Creek, Florence Lake Dam - One of the four 1.5" diameter drains through the arch approximately 1' above the lower horizontal key before covering with facing steel. Pipes were sulfured and grouted in. 1.5" iron stop cocks were placed on the downstream ends of the pipes.
Southern California Edison Photographs and Negatives G. Haven Bishop (SCE) Southern California Edison Photographs and Negatives, Huntington Digital Library
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