Lock and Dam No. 11

Lock and Dam No. 11 ( lock and dam No. 11) is one of 29 dams that enable navigation on the upper Mississippi. Built in 1934-1937 by the United States Army Corps of Engineers combined building is located between Dubuque, Iowa and the Grant County, Wisconsin. In 2004, the Lock and Dam No. was. 11 Historic District was added to the NRHP.

Barrage

To barrage include a 1,018 meters long stone dam on the Wisconsin side and a 450.5 m long variable part, which consists of a segment 13teiligen weir and three jam rolls.

The dam height is nine feet (2.70 m). The purpose of the weir is not in the first line of flood protection, but the damming of the Mississippi for navigation.

Lock

The lock is 182.9 m long and 33.5 m wide. Next to it is a second, but not completed smaller airlock chamber.

Dubuque (Iowa) Grant County (Wisconsin) Roller dam Lock and Dam No. 10 Lock and Dam No. 12 Lock and Dam No. 13 Lock and Dam No. 14 Lock and Dam No. 15 Lock and Dam No. 16 Lock and Dam No. 21 Lock and Dam No. 22 Lock and Dam No. 24 Lock and Dam No. 25 Melvin Price Locks and Dam Chain of Rocks Lock
527101
de