Building the Canal to Save Chicago

Chapter 5 Photos, 24–45

(photos 1–23 here)

Rock Section

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Lake Claremont Press

Lake Claremont Press: A Chicago Joint

S. Woodhouse Books

BC-Photo 5.40

Details of the downstream leaf of the Bear Trap Dam, February 7, 1899. The holes in the foundation allow flow to enter or exit the chamber providing buoyancy to reduce the dead weight of the leaves and to facilitate raising or lowering the dam. (MWRD photo, disc 8, image 3)