Chicago had a filthy problem in the late 1800s. Its citizens kept dumping raw sewage into Lake Michigan, the very source of their drinking water. Typhoid ran rampant. To fix this, engineers did something radical. They reversed a river. The Lockport Lock, Dam and Power House Historic District, built at the terminus of the Chicago Sanitary and Ship Canal, made this engineering miracle work. Opened in 1907, the site served as the master valve. It controlled the flow of Chicago's waste flushed down the brand-new canal.
The power house itself looks surprisingly elegant for a sewage-management hub. Designers used light gray Bedford limestone to build it in the Renaissance Revival style. But its job was pure utility. Inside, massive turbines harnessed the canal's 40-foot drop. This power lit Chicago's streetlights. Look closely at the structures today. You can still see the massive steel butterfly valves. They regulated the torrents of water. Nearby, the concrete lock chambers look like artificial canyons. The 1933 lock replaced an earlier, smaller version. It still lifts barges loaded with coal, road salt, and chemicals. Over forty feet of vertical travel.
Missouri actually sued Illinois over this project. St. Louis residents hated the idea of drinking Chicago's diluted waste. So they took the fight to the U.S. Supreme Court in 1901. Illinois won, though. The Lockport facilities proved that humans could bend continental hydrology to their will. This site connected the Great Lakes basin to the Mississippi River watershed. It permanently altered North American ecology. Invasive species like carp use this highway now. It is a messy, complicated legacy. But without this concrete plug in Will County, modern Chicago simply could not exist.
What Makes Lockport Lock, Dam and Power House Historic District Special:
