Lock and Dam No. 25 - Misplaced Pages

Lock and dam near Winfield, Missouri

Dam in Missouri, USA

Dam and spillways
Mississippi River Lock and Dam No. 25
Location	Richwood Precinct, Calhoun County, Illinois / Burr Oak Township, Lincoln County, Missouri, near Winfield, Missouri, USA
Coordinates	39°00′17″N 90°41′11″W / 39.00472°N 90.68639°W / 39.00472; -90.68639
Construction began	1935
Opening date	May 18, 1939
Operator(s)	[REDACTED] U.S. Army Corps of Engineers, St. Louis District
Impounds	Upper Mississippi River
Length	1,296 feet (395.0 m)
Reservoir
Creates	Pool 25
Total capacity	176,000 acre⋅ft (0.217 km)
Catchment area	142,000 sq mi (370,000 km)
Surface area	18,000 acres (73 km)


Lock and Dam No. 25 Historic District
U.S. National Register of Historic Places
U.S. Historic district

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Location	10 Sandy Slough Rd., Winfield, Missouri
Area	316.4 acres (128.0 ha)
Built	1939
Architect	US Army Corps of Engineers; Griffin, Almern Frederick
MPS	Upper Mississippi River 9-Foot Navigation Project MPS
NRHP reference No.	04000184
Added to NRHP	March 10, 2004

Lock and Dam No. 25 is a lock and dam located near Winfield, Missouri, on the Upper Mississippi River around river mile 241.4. The movable portion of the dam is 1,296 feet (395.0 m) long and consists of three roller gates and 14 tainter gates. A 2,566 feet (782.1 m) submersible dike extends to the Illinois shore. A 5 miles (8.0 km) long dike is part of the facility extending upstream on the Missouri side of the river. The main lock is 110 feet (33.5 m) wide by 600 feet (182.9 m) long. In 2004, the facility was listed in the National Register of Historic Places as Lock and Dam No. 25 Historic District, #04000184 covering 3,164 acres (12.8 km), 2 buildings, 7 structures, 2 objects.

References

External links

USGS Reach 2, Pool 25
Historic American Engineering Record documentation:
- HAER No. MO-37, "Upper Mississippi River Nine-Foot Channel Project, Lock & Dam No. 25, Cap au Gris, Lincoln County, MO", 93 photos, 9 data pages, 7 photo caption pages
- HAER No. MO-50, "Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Nos. 24-27, Clarksville, Pike County, MO", 125 data pages

List of locks and dams of the Upper Mississippi River

Dams

Locks and dams

Upper Saint Anthony Falls
Lower Saint Anthony Falls
1
2
3
4
5
5A
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
24
25
26 (Melvin Price Locks and Dam)
27 (Chain of Rocks Lock)

Upstream:
Lock and Dam No. 24

Downstream:
Melvin Price Locks and Dam

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