Chain of Rocks Lock, also known as Locks No. 27, is a lock situated at the southern end of Chouteau Island near St. Louis, Missouri on the Upper Mississippi River. Its associated dam is just downstream of the Chain of Rocks Bridge, and the lock is located over 3 miles (4.8 km) southeast on the Chain of Rocks canal.
Latitude: 38° 42' 6.59" N
Longitude: -90° 10' 30.60" W
Nearest city to this article: Granite City Read about Chain of Rocks Lock in the Wikipedia Satellite map of Chain of Rocks Lock in Google Maps