Lock and Dam No. 21 is a lock and dam located at Quincy, Illinois on the UpperMississippi 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. The main lock is 110 feet (33.5 m) wide by 600 feet (182.9 m) long and 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. 21 Historic District, #04000181 covering 1,075 acres (4.4 km2), 1 building, 4 structures, 4 objects.
Media related to Mississippi River Lock and Dam number 21 at Wikimedia Commons
Historic American Engineering Record (HAER) No. IL-30, "Mississippi River 9-Foot Channel Project, Lock & Dam No. 21, Upper Mississippi River, Quincy, Adams County, IL"
Lock and Dam No. 21 - U.S. Army Corps of Engineers
lock, lock, located, quincy, illinois, upper, mississippi, river, around, river, mile, movable, portion, feet, long, consists, three, roller, gates, tainter, gates, feet, long, submersible, dike, continues, missouri, shore, main, lock, feet, wide, feet, long, . 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 The main lock is 110 feet 33 5 m wide by 600 feet 182 9 m long and 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 21 Historic District 04000181 covering 1 075 acres 4 4 km2 1 building 4 structures 4 objects Lock and Dam No 21Mississippi River Lock and Dam number 21LocationMelrose Township Adams County Illinois Fabius Township Marion County Missouri near Quincy Illinois USACoordinates39 54 21 97 N 91 25 55 87 W 39 9061028 N 91 4321861 W 39 9061028 91 4321861Construction began1933Opening dateJuly 23 1938Operator s U S Army Corps of Engineers Rock Island DistrictDam and spillwaysImpoundsUpper Mississippi RiverLength1 265 feet 385 6 m movable portion ReservoirCreatesPool 21Total capacity62 000 acre ft 0 076 km3 Catchment area135 000 sq mi 350 000 km2 Lock and Dam No 21 Historic DistrictU S National Register of Historic PlacesU S Historic districtShow map of IllinoisShow map of the United StatesLocation0 5 mi W of IL 57 Quincy IllinoisArea107 5 acres 43 5 ha Built1938ArchitectUS Army Corps of Engineers Abbott Edwin E et al MPSUpper Mississippi River 9 Foot Navigation Project MPSNRHP reference No 04000181 1 Added to NRHPMarch 10 2004 Currently there is a study being conducted by the city of Quincy to convert Lock amp Dam No 21 20 and 22 into being hydroelectric by 2016 3 Lock and Dam 21 View is from the Illinois side of the river looking upriver to the north See also editPublic Works Administration dams listReferences edit National Register Information System National Register of Historic Places National Park Service July 9 2010 Lock amp Dam 21 PDF U S Army Corps of Engineers Archived from the original PDF on January 6 2014 Retrieved January 5 2014 WGEM Archived September 27 2007 at the Wayback MachineExternal links edit nbsp Media related to Mississippi River Lock and Dam number 21 at Wikimedia Commons Historic American Engineering Record HAER No IL 30 Mississippi River 9 Foot Channel Project Lock amp Dam No 21 Upper Mississippi River Quincy Adams County IL Lock and Dam No 21 U S Army Corps of Engineers This article about a property in Marion County Missouri on the National Register of Historic Places is a stub You can help Wikipedia by expanding it vte This article about a property in Adams County Illinois on the National Register of Historic Places is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Lock and Dam No 21 amp oldid 1197856785, wikipedia, wiki, book, books, library,
