Lock and Dam No. 24 | |||||||||||||||||||
Dam Crosses: | Upper Mississippi River | ||||||||||||||||||
Res Name: | Pool 24 | ||||||||||||||||||
Location: | Belleview Precinct, Calhoun County, Illinois / Clarksville, Missouri, USA | ||||||||||||||||||
Operator: | U.S. Army Corps of Engineers, St. Louis District | ||||||||||||||||||
Dam Length: | 1340feet | ||||||||||||||||||
Construction Began: | July 1936 | ||||||||||||||||||
Opening: | March 12, 1940 | ||||||||||||||||||
Res Capacity Total: | 125363acre feet | ||||||||||||||||||
Res Catchment: | 140900mi2 | ||||||||||||||||||
Coordinates: | 39.3767°N -90.9083°W | ||||||||||||||||||
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Lock and Dam No. 24 is a lock and dam located near Clarksville, Missouri around river mile 273.4 on the Upper Mississippi River. The main lock is 110feet wide and 600feet long with its bottom at an elevation of 430 feet. The auxiliary lock is not operational. Normal pool elevation behind the dam is 449 feet. The movable portion of the dam is 1340feet long and consists of 15 submersible, elliptical, tainter gates. A 2720feet submersible earthen dike extends from the movable dam to the Illinois shore.[1] In 2004, the facility was listed in the National Register of Historic Places as Lock and Dam No. 24 Historic District, #04000183 covering 1027acres, 3 buildings, 15 structures, 4 objects.