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The flood, rather than being a short term event, was anticipated to last from June through August 2011 as a result of attempts by the Corps of Engineers to regulate the release of water through 850 miles (1,370 km) of open river from Garrison Dam in North Dakota to the confluence with the Mississippi River at St. Louis.
In June 2011, in response to the 2011 Missouri River Floods, the dam was releasing more than 140,000 cubic feet per second (4,000 m 3 /s), which greatly exceeded its previous record release of 65,000 cu ft/s (1,800 m 3 /s) set in 1997. [8] The first use of the emergency spillway due to flooding started on June 1, 2011, at 8:00am. [9]
The 2011 Missouri River floods was a flooding event on the Missouri River in the United States, in May and June that year. The flooding was triggered by record snowfall in the Rocky Mountains of Montana and Wyoming along with near-record spring rainfall in central and eastern Montana.
A series of flood control reservoirs backed up by massive dams is a key factor driving the high water currently swelling the Missouri River. The abnormally high flow on the upper Missouri River ...
Signs that floodwaters were headed south began to emerge as the NWS issued a major flooding designation on Saturday for Osceola, Arkansas, where the Mississippi River reached above 35 feet (10.7 m ...
Big Bend Dam is a major embankment rolled-earth dam on the Missouri River in Central South Dakota, United States, creating Lake Sharpe. The dam was constructed by the U.S. Army Corps of Engineers as part of the Pick-Sloan Plan for Missouri watershed development authorized by the Flood Control Act of 1944. Construction began in 1959 and the ...
Residents of Winthrop, Missouri evacuated as Missouri River flooding snaked through farmlands heading towards homes.
On May 3, using the planned procedures for the Birds Point-New Madrid Floodway, the Corps of Engineers blasted a two-mile (3 km) hole in the levee protecting the floodway, flooding 130,000 acres (530 km 2) of farmland in Mississippi County, Missouri, in an effort to save the town of Cairo, Illinois and the rest of the levee system, from record-breaking flood waters. [19]