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- Chain of Rocks Lock (Chain of Rocks-Schleuse, auch Locks #27 genannt) ist die unterste von 29 Schleusen am oberen Mississippi und die einzige unterhalb der Missourimündung. Die Schleuse liegt am Chain of Rocks Canal, der einen nicht schiffbaren Abschnitt, die "Chain of Rocks" (dt.:Felsenkette), im Hauptbett des Mississippi umgeht. Das zwischen 1947 und 1964 vom United States Army Corps of Engineers errichtete Bauwerk befindet sich zwischen Granite City und Madison im beiderseits des Kanals liegenden Madison County in Illinois. Die Schleuse liegt im Metro-East genannten östlichen Teil der Metropolregion Greater St. Louis um die Stadt St. Louis im benachbarten Missouri. (de)
- Chain of Rocks Lock and Dam, also known as Locks No. 27, is a lock situated at the southern end of Chouteau Island near St. Louis, Missouri on the Upper Mississippi River. Its associated dam is just downstream of the Chain of Rocks Bridge, and the lock is located over 3 miles (4.8 km) southeast on the Chain of Rocks canal. The canal and locks allow river traffic to bypass a portion of the river that is unnavigable in low water due to an anticlinal exposure of bedrock in the river—a "chain of rocks". The 8.4-mile (13.5 km) canal, 1,200-foot (370 m) main lock, and 600-foot (180 m) auxiliary lock were built in the late 1940s and early 1950s to allow a by-pass of the Chain of Rocks lying in the main channel of the Mississippi River. This stretch of river in low water seasons was treacherous for commercial tow boats and barges, often requiring them to wait several days for the river to rise. The dam for lock 27 is atypical for the Mississippi, being a weir made of tons of rock laid in the Mississippi to create a small pool elevation upstream from the Chain of Rocks. The drop at Locks 27 can vary from a few feet to over a ten-foot drop depending on the river stage. The Chain of Rocks Lock is operated by the St. Louis District of the U.S. Army Corps of Engineers. Locks No. 27 are the southernmost locks on the Mississippi River and they are the only Locks south of the confluence of the Mississippi River and Missouri River. As such, the Locks move more cargo than any other navigation structure on the Mississippi River. (en)
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- 6323 (xsd:nonNegativeInteger)
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- no further locks and dams (en)
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- Chain of Rocks Lock and Dam (en)
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- Upper Mississippi River 9-Foot Channel Project, Lock & Dam 27, Granite City, Madison County, IL (en)
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- Chain of Rocks Lock (Chain of Rocks-Schleuse, auch Locks #27 genannt) ist die unterste von 29 Schleusen am oberen Mississippi und die einzige unterhalb der Missourimündung. Die Schleuse liegt am Chain of Rocks Canal, der einen nicht schiffbaren Abschnitt, die "Chain of Rocks" (dt.:Felsenkette), im Hauptbett des Mississippi umgeht. Das zwischen 1947 und 1964 vom United States Army Corps of Engineers errichtete Bauwerk befindet sich zwischen Granite City und Madison im beiderseits des Kanals liegenden Madison County in Illinois. Die Schleuse liegt im Metro-East genannten östlichen Teil der Metropolregion Greater St. Louis um die Stadt St. Louis im benachbarten Missouri. (de)
- Chain of Rocks Lock and Dam, also known as Locks No. 27, is a lock situated at the southern end of Chouteau Island near St. Louis, Missouri on the Upper Mississippi River. Its associated dam is just downstream of the Chain of Rocks Bridge, and the lock is located over 3 miles (4.8 km) southeast on the Chain of Rocks canal. The canal and locks allow river traffic to bypass a portion of the river that is unnavigable in low water due to an anticlinal exposure of bedrock in the river—a "chain of rocks". (en)
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- Chain of Rocks Lock (de)
- Chain of Rocks Lock (en)
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- POINT(-90.180938720703 38.703109741211)
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- Locks No. 27 (en)
- Chain of Rocks Lock and Dam (Lock and Dam No. 27) (en)
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