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The Upper Mississippi River is today the portion of the Mississippi River upstream of St. Louis, Missouri, United States, [1] 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 .
Mississippi River. The Army Corps was forced to close the river to navigation, intermittently, from Lock and Dam No. 11 to Lock and Dam No. 25. As of Sunday, June 15, Locks 13 through 25 were closed, making 281 miles (452 km) of the Mississippi River inaccessible to commercial river traffic.
Saint Anthony Falls, or the Falls of Saint Anthony ( Dakota: Owámniyomni, lit.'whirlpool' [2] ), located at the northeastern edge of downtown Minneapolis, Minnesota, is the only natural major waterfall on the Mississippi River. Throughout the mid-to-late 1800s, various dams were built atop the east and west faces of the falls to support the ...
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 protects more than 240,000 acres of floodplain along the river from Wabasha, Minnesota, to Rock Island, Illinois, including much of ...
Madeline Heim is a Report for America corps reporter who writes about environmental issues in the Mississippi River watershed and across Wisconsin. Contact her at (920) 996-7266 or mheim@gannett.com .
The Spillway diverts part of the flow of the Mississippi River into Lake Pontchartrain. The Spillway is operated to limit the Mississippi River flow passing New Orleans, Louisiana, to the project design flood discharge of 1.25 million cubic feet per second (cfs). The peak diversion discharge through the Spillway of 213,000 cfs occurred on 19 ...
The Mississippi River System, also referred to as the Western Rivers, is a mostly riverine network of the United States which includes the Mississippi River and connecting waterways. The Mississippi River is the largest drainage basin in the United States. [3] In the United States, the Mississippi drains about 41% of the country's rivers.