Lock and Dam No. 24

Lock and Dam No. 24 ( lock and dam No. 24) is one of 29 dams that enable navigation on the upper Mississippi. Built in 1936-1940 by the United States Army Corps of Engineers combined building is located in Clarksville in Pike County, Missouri. On the opposite left bank of the Calhoun County is located in Illinois. In 2004, the Lock and Dam No. was. 24 Historic District was added to the NRHP.

Barrage

To barrage include a 829.1 m long stone dam on the Illinois side, and a 408.4 m long variable part, which consists of a 15 -slice weir.

The dam height is 9 feet (2.70 m). The purpose of the weir is not the flood, but the damming of the Mississippi for navigation.

Lock

The lock is 182.9 m long and 33.5 m wide. Next to it is a second, but not completed smaller airlock chamber.