Chicago Harbor Lock

Chicago Harbor Lock
Map
41°53′18″N 87°36′23″W / 41.8884°N 87.6064°W / 41.8884; -87.6064
WaterwayChicago River
CountryUnited States
StateIllinois
CountyCook County
Maintained byUS Army Corps of Engineers
OperationHydraulic
First built1938
Latest built2011
Length600 ft (180 m)
Width80 ft (24 m)
Fall2 to 5 ft (0.61 to 1.52 m)
Above sea level582 ft (177 m)[1]
Satellite view of the Chicago Harbor Lock separating the Chicago River (left) from Lake Michigan (right). The west gate is open and the east gate is closed putting the lock chamber at the level of the river.
View towards lock from one of Chicago's high-rises, with the Outer Drive Bridge in the foreground

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.

  1. ^ "Great Lakes Water Level Observations". NOAA. Archived from the original on 12 August 2020. Retrieved 17 July 2020.{{cite web}}: CS1 maint: bot: original URL status unknown (link)