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The Chicago Harbor Lock, also known as the Chicago River & Harbor Controlling Works, is a stop lock and dam located within the Chicago Harbor in Chicago, Illinois at the mouth of the Chicago River. It is a component of the Chicago Area Waterway System , and is used to control water diversion from Lake Michigan into the river and for navigation.
The main entrance to this harbor is marked by the Chicago Harbor Lighthouse. The Jardine Water Purification Plant, Navy Pier, the Chicago Harbor Lock, Coast Guard Station Chicago, two municipal harbors (DuSable Harbor and Monroe Harbor), the Chicago Yacht Club, and the Columbia Yacht Club are all located here. [2]
There are three major locks within the CAWS, operated by the Army Corps of Engineers: the Chicago Harbor Lock, the Lockport Lock & Dam, and the T.J. O'Brien Lock and Dam. [4] Artificial waterways connecting the Mississippi and Great Lakes systems via the Chicago area, over the Chicago Portage, began with the I&M Canal in 1848. [5]
Chicago Harbor Lock; L. Lock and Dam Number 52; Lock and Dam Number 53; M. Melvin Price Locks and Dam; O. Olmsted Locks and Dam; S. Smithland Lock and Dam; T. T.J. O ...
To reduce the impacts from flooding, the Chicago Harbor Lock was opened for the first time since it was constructed at the mouth of the river in the 1930s. Outside of Chicago, flash flooding occurred in urban areas and along creeks across large portions of the metropolitan area and rural areas to the west.
The lock chamber measures 1,000 by 110 feet (305 m × 34 m) with a maximum lift capability of 5 feet (1.5 m). [ 1 ] [ 2 ] The lock contains a pair of sector gates at either end, which were chosen as they both reduce the cost of engineering and are more conducive to operations in a waterway which can reverse direction.
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In March 2022, Friends of the Chicago Harbor Lighthouse (FOCHL), a 501(c)(3) not-for-profit charity was formed with the mission to preserve, restore and celebrate the Chicago Harbor Lighthouse. In December of 2023, FOCHL submitted an application to the National Park Service for transfer of ownership of the lighthouse from the City of Chicago to ...