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The Upper Mississippi River is the portion of the Mississippi River upstream of St. Louis, Missouri, United States, [1] a city at the confluence of its main tributary, the Missouri River. [ citation needed ] Historically, it may refer to the area above the Arkansas Post , above the confluence of Ohio River , or above Cape Girardeau .
HAER No. MO-35, "Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 22, Saverton, Ralls County, MO", 21 photos, 15 data pages, 2 photo caption pages HAER No. MO-36, " Upper Mississippi River Nine-Foot Channel Project, Lock & Dam No. 24, Clarksville, Pike County, MO ", 44 photos, 9 data pages, 3 photo caption pages
The Army Corps operates 29 locks and dams on the upper Mississippi River, from Minneapolis to Granite City, Illinois, north of St. Louis. The lower Mississippi does not need locks and dams because ...
The uppermost lock and dam on the Upper Mississippi River is the Upper St. Anthony Falls Lock and Dam in Minneapolis. Above the dam, the river's elevation is 799 feet (244 m). Below the dam, the river's elevation is 750 feet (230 m). This 49-foot (15 m) drop is the largest of all the Mississippi River locks and dams.
The Upper Mississippi River National Wildlife and Fish Refuge is the longest contiguous river refuge in the continental U.S., spanning 261 river miles from Wabasha, Minnesota to Rock Island, Illinois.
This past spring, many towns along the upper Mississippi saw near-record flooding, including McGregor, Iowa, across the river from Prairie du Chien, where the river hit its third-highest crest on ...
The inland and intercoastal waterways, with the Upper Mississippi highlighted in red. This is a list of all current and notable former bridges or other crossings of the Upper Mississippi River which begins at the Mississippi River's source and extends to its confluence with the Ohio River at Cairo, Illinois.
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