Lock and Dam No. 8

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Mississippi River Lock and Dam number 8.
Location Jefferson Township, Houston County, Minnesota / Genoa, Vernon County, Wisconsin,
near Genoa, Wisconsin, USA
Coordinates 43°34′12″N 91°13′54″W / 43.57000°N 91.23167°W / 43.57000; -91.23167
Construction began 1933
Opening date April 1937
Operator(s) United States Army Corps of Engineers
Dam and spillways
Impounds Upper Mississippi River
Creates Pool 8
Total capacity 260,000 acre·ft (0.32 km3)
Catchment area 64,770 sq mi (167,800 km2)

Lock and Dam No. 8 is a lock and dam located near Genoa, Wisconsin on the Upper Mississippi River near river mile 679.2. It was constructed and put into operation by April 1937. The site underwent major rehabilitation from 1989 through 2003.

The dam consists of a concrete structure 934 feet (284.7 m) long with five roller gates and 10 tainter gates. The earth embankment is 17,500 feet (5,334.0 m) long with two submersible spillways, 938 feet (285.9 m) long and 1,338 feet (407.8 m) long. The lock is 110 feet (33.5 m) wide by 600 feet (182.9 m) long.

Aerial view

External links[edit]

Coordinates: 43°34′12″N 91°13′54″W / 43.57000°N 91.23167°W / 43.57000; -91.23167

Locks and dams of the Upper Mississippi River
Lock and Dam No. 7
Lock and Dam No. 9