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- Lock and Dam No. 21 (Schleuse und Staustufe Nr. 21) ist eines von 29 Stauwerken, die die Schifffahrt am oberen Mississippi ermöglichen. Das zwischen 1933 und 1938 vom United States Army Corps of Engineers errichtete kombinierte Bauwerk befindet sich in Quincy im Adams County, Illinois. Auf dem gegenüberliegenden rechten Flussufer liegt das Marion County in Missouri. Im Jahr 2004 wurde das Lock and Dam No. 21 Historic District in das NRHP aufgenommen. (de)
- 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. 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. Currently there is a study being conducted by the city of Quincy to convert Lock & Dam No. 21, 20, and 22 into being hydroelectric by 2016. (en)
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- 0001-03-10 (xsd:gMonthDay)
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- Mississippi River Lock and Dam number 21 (en)
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- near Quincy, Illinois, USA (en)
- Melrose Township, Adams County, Illinois / Fabius Township, Marion County, Missouri, (en)
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- Mississippi River 9-Foot Channel Project, Lock & Dam No. 21, Upper Mississippi River, Quincy, Adams County, IL (en)
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- 39.906102777777775 -91.43218611111111
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- Lock and Dam No. 21 (Schleuse und Staustufe Nr. 21) ist eines von 29 Stauwerken, die die Schifffahrt am oberen Mississippi ermöglichen. Das zwischen 1933 und 1938 vom United States Army Corps of Engineers errichtete kombinierte Bauwerk befindet sich in Quincy im Adams County, Illinois. Auf dem gegenüberliegenden rechten Flussufer liegt das Marion County in Missouri. Im Jahr 2004 wurde das Lock and Dam No. 21 Historic District in das NRHP aufgenommen. (de)
- 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. 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. (en)
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- Lock and Dam No. 21 (de)
- Lock and Dam No. 21 (en)
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