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Lock and Dam No. 21 is a lock and dam located at Quincy, Illinois on the Upper Mississippi River around river mile 324.9. The movable portion of the dam is 1,265 feet (385.6 m) long and consists of three roller gates and ten tainter gates. A 1,400 feet (426.7 m) long submersible dike continues to the Missouri shore.
HAER No. IL-27, "Mississippi River 9-Foot Channel Project, Lock & Dam No. 15, Rock Island, Rock Island County, IL", 52 photos, 16 data pages, 4 photo caption pages HAER No. IL-28, " Mississippi River 9-Foot Channel Project, Lock & Dam No. 17, New Boston, Mercer County, IL ", 78 photos, 14 data pages, 5 photo caption pages
The present lock was constructed in 1958-1960 and opened for use on June 1, 1960. [1] The dam features a Spillway Crest 221' long at elevation 736.7, 50' long Hinged Crest Gate with variable height from 6" above spillway (737.2) to 730.3; installed in 2002, and 5 Sluice Gates that are 13.75' long.
Lock and Dam No. 18 is a lock and dam located near Gladstone, Illinois and Burlington, Iowa on the Upper Mississippi River around river mile 410.5. The movable dam is 1,350 feet (411.5 m) and consists of 3 roller gates and 14 tainter gates. The lock is 110 feet (33.5 m) wide by 600 feet (182.9 m) long.
The main lock is 1,200 feet (370 m) long and 110 feet (34 m) wide; the auxiliary is 600 feet (180 m) long and 110 feet (34 m) wide. The main lock has a vertical lift gate and a miter gate while the aux. lock has two miter gates. The dam is 1,160 feet (350 m) long with 9 tainter gates, each 110 feet (34 m) wide by 42 feet (13 m) high.
The Chicago Sanitary and Ship Canal reached Lockport, Illinois in the 1890s. As part of this construction, a lock and dam was built in Lockport. Seven waste gates, used to control the level of water in the canal and Des Plaines River, were part of this project. [2] From 1903 to 1907, the canal was extended from Lockport to Joliet. Construction ...
Lock and Dam No. 19 is a lock and dam located on the Upper Mississippi River near Keokuk, Iowa. In 1978, the Keokuk Lock and Dam was listed in the National Register of Historic Places , #78001234. In 2004, the facility was listed in the National Register of Historic Places as Lock and Dam No. 19 Historic District, #04000179 covering 1,605 acres ...
The lock has a standard 100-by-600-foot (30 m × 183 m) chamber, similar to other locks on the river, and a vertical lift of 11 feet (3.4 m). The dam is 536 feet (163 m) long and includes 108 wicket gates and a Tainter gate ; it is one of two Illinois dams that still use wicket gates. [ 4 ]