Lock and Dam No. 22

Lock and Dam No. 22
Lock and Dam No. 22
	Mississippi River Lock and Dam No. 22
	Location of Lock and Dam No. 22 in Missouri
Location	Cincinnati Township, Pike County, Illinois / Saverton Township, Ralls County, Missouri,; near Saverton, Missouri
Coordinates	39°38′18″N 91°14′49″W / 39.63833°N 91.24694°W
Construction began	1934
Opening date	July 22, 1938
Operator(s)	U.S. Army Corps of Engineers, Rock Island District
Dam and spillways
Impounds	Upper Mississippi River
Length	1,224 feet (373.1 m) (movable portion)
Reservoir
Creates	Pool 22
Total capacity	80,000 acre⋅ft (0.099 km3)
Catchment area	137,500 sq mi (356,000 km2)
	Lock and Dam No. 22 Historic District
	U.S. National Register of Historic Places
	U.S. Historic district
Location	Secondary Rd. E, New London, Missouri
Area	126.8 acres (51.3 ha)
Built	1938
Architect	US Army Corps of Engineers; Abbott, Edwin E., et al.
MPS	Upper Mississippi River 9-Foot Navigation Project MPS
NRHP reference No.	04000182
Added to NRHP	March 10, 2004

Lock and Dam No. 22 is a lock and dam located near Saverton, Missouri, on the Upper Mississippi River around river mile 301.2. The movable portion of the dam is 1,224 feet (373.1 m) long and consists of three roller gates and ten tainter gates. A 1,600 feet (487.7 m) long submersible earthen dike extends to a flood control levee on the Illinois shore. The main lock is 110 feet (33.5 m) wide by 600 feet (182.9 m) long; there is also an incomplete auxiliary lock.^[2] In 2004, the facility was listed in the National Register of Historic Places as Lock and Dam No. 22 Historic District, #04000182 covering 1,268 acres (5.1 km²), 1 building, 5 structures, 4 objects.

When the northern part of Mississippi froze in the first week of February 2007, upwards of 20 bald eagles flew down to fish in the churning waters below Lock and Dam No. 22.^{[citation needed]}