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'View inside the cofferdam for the weir part of the dam. Taken from the center pier. Building and filling  (with loose stone) the permanent cribs for the weir foundation in progress. Also excavating the 'stop-off ditch' in the hardpan to form part of the concrete core between the two lines of cribs. The foundations of this dam rest on hardpan - an indurated clay - from 18 to 24 feet below extreme low-water mark.'

1. Lock and Dam No. 11 During Construction, Chanoine Wicket Dam, Kanawha River, W.Va.