West by Southwest to Stickney

Chapter 4 Photos, 38–73

(photos 1–37 here)

Extending the Sanitary & Ship Canal

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Photo 4.50

It took less than two hours to fill the small space between the cofferdam and Butterfly Dam, and later on August 27, 1907, the valves in the Butterfly Dam were opened to let water into the much larger space between the Butterfly Dam and the powerhouse, two miles downstream. (MWRD photo 3662N)