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Arrowrock dam site. Diversion tunnel looking downstream. Timbering and timber lining of area, though section under dams, has been removed and this section is being cleaned up preparatory to filling with concrete. Upstream key in side lining shows above foreground. One of the three shafts for filling from inspection gallery shows indistinctly at top of picture.

December 5, 1914. Arrowrock dam site. Diversion tunnel looking downstream. Timbering and timber lining of area, though section under dams, has been removed and this section is being cleaned up preparatory to filling with concrete. Upstream key in side lining shows above foreground. One of the three shafts for filling from inspection gallery shows indistinctly at top of picture.



Last Updated: 9/26/23