Lock and Dam No. 24

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Mississippi River Lock and Dam number 24.jpg
Mississippi River Lock and Dam number 24
Location Belleview Precinct, Calhoun County, Illinois / Clarksville, Missouri, USA
Coordinates 39°22′36″N 90°54′30″W / 39.37667°N 90.90833°W / 39.37667; -90.90833
Construction began July 1936
Opening date March 12, 1940
Operator(s) United States Army Corps of Engineers
Dam and spillways
Impounds Upper Mississippi River
Length 1,340 feet (408.4 m)
Creates Pool 24
Total capacity 125,363 acre·ft (0.154633 km3)
Catchment area 140,900 sq mi (365,000 km2)
Lock and Dam No. 24 Historic District
Location 350 N. First St., Clarksville, Missouri
Area 102.7 acres (41.6 ha)
Built 1940
Governing body Federal
MPS Upper Mississippi River 9-Foot Navigation Project MPS
NRHP Reference # 04000183[1]
Added to NRHP March 10, 2004

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 110 feet (33.5 m) wide and 600 feet (182.9 m) 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 1,340 feet (408.4 m) long and consists of 15 submersible, elliptical, tainter gates. A 2,720 feet (829.1 m) submersible earthen dike extends from the movable dam to the Illinois shore. In 2004, the facility was listed in the National Register of Historic Places as Lock and Dam No. 24 Historic District, #04000183 covering 1,027 acres (4.2 km2), 3 buildings, 15 structures, 4 objects.


  1. ^ "National Register Information System". National Register of Historic Places. National Park Service. 2010-07-09. 

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External links[edit]

Lock and Dam number 24. View is from the Missouri side of the river, looking northeast toward Illinois.
Locks and dams of the Upper Mississippi River
Lock and Dam No. 22
Lock and Dam No. 25

Coordinates: 39°22′36″N 90°54′30″W / 39.37667°N 90.90833°W / 39.37667; -90.90833