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Tower Rock, also known as Grand Tower, is a rock formation and landmark island in the Mississippi River, in Brazeau Township, Perry County, Missouri, near the town of Wittenberg, Missouri, and across the river from Grand Tower, Illinois. It was listed on the National Register of Historic Places in 1970. [1]
Lock and Dam No. 22 is a lock and dam located near Saverton, Missouri, on the Upper Mississippi River around river mile 301.2. The movable portion of the dam is 1,224 feet (373.1 m) long and consists of three roller gates and ten tainter gates.
After 1940, only a single impediment prevented the maintenance of a safe and reliable 9-foot (2.7 m) navigation channel on the Mississippi River from St. Paul, Minnesota, to New Orleans. This impediment, known as the Chain of Rocks Reach, was a 17-mile (27 km) series of rock ledges that began just north of St. Louis and was extremely difficult ...
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
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.
Lock and Dam No. 20 is a lock and dam located on the Upper Mississippi River, the lock side in Canton, Missouri and the dam crossing to Meyer, Illinois. The structure is located at river mile 343.1. It includes a 2,369 feet (722 m) long dam, 40 tainter gates , 3 roller gates , and a lock chamber that is 110 feet (34 m) wide by 600 feet (183 m ...
Construction began in 1979, the main lock opened in 1990, and the full structure was completed in 1994. It replaced the earlier Lock and Dam No. 26, demolished in 1990, and is the first replacement structure on the Upper Mississippi River nine-foot navigation project. The main lock is 1,200 feet (370 m) long and 110 feet (34 m) wide; the ...
The immigrant group would eventually form the backbone of the Lutheran Church–Missouri Synod, and they considered Tower Rock, nearby in the Mississippi River, to be their own version of Plymouth Rock in their search for religious freedom. [5] At its high point, Wittenberg had as many as 400 residents.