The project design flood is a hypothetical "maximum probable" flood of the Mississippi River used by the United States Army Corps of Engineers to aid in the design and execution of flood protection in the Mississippi Valley. Once the project design flood was developed, flow rates at critical points are used to determine how high levees need to be, how deep the dredging needs to be, and the flowrates at which flood control structures need to be used.
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| - Crue de projet (fr)
- Project design flood (en)
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| - La crue de projet (aussi crue nominale ou crue type) dans un projet d'ouvrage hydraulique (barrage ou digue) est celle pour laquelle l'ouvrage a été dimensionné, et pour laquelle le transit s'effectuera sans risque ni dommage sur l'ouvrage. (fr)
- The project design flood is a hypothetical "maximum probable" flood of the Mississippi River used by the United States Army Corps of Engineers to aid in the design and execution of flood protection in the Mississippi Valley. Once the project design flood was developed, flow rates at critical points are used to determine how high levees need to be, how deep the dredging needs to be, and the flowrates at which flood control structures need to be used. (en)
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| - Cairo, Illinois
- Baton Rouge, Louisiana
- United States Army Corps of Engineers
- United States Congress
- Vicksburg, Mississippi
- United States Army Corps of Engineers
- Memphis, Tennessee
- Old River Control Structure
- White River (Arkansas)
- Great Mississippi Flood of 1927
- Mississippi River
- Mississippi River floods
- Mississippi Valley
- Missouri River
- Morgan City, Louisiana
- Levee
- Ohio River flood of 1937
- Dredger
- 1973 Mississippi River floods
- Mississippi River
- Cumberland River
- Paducah, Kentucky
- Flood Control Act of 1928
- Greenville, Mississippi
- Bonnet Carre Spillway
- Tennessee River
- Arkansas City, Arkansas
- Arkansas River
- Birds Point-New Madrid Floodway
- Yazoo River
- Red River Landing, Louisiana
- Southampton, St. Louis
- Natchez, Mississippi
- New Madrid, Missouri
- Crescent City
- Pittsburgh metropolitan area
- Red River of the South
- Mississippi River Commission
- Wax Lake
- Weather Bureau
- Senate Public Works Committee
- Morganza Floodway
- U.S. Weather Bureau
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| - La crue de projet (aussi crue nominale ou crue type) dans un projet d'ouvrage hydraulique (barrage ou digue) est celle pour laquelle l'ouvrage a été dimensionné, et pour laquelle le transit s'effectuera sans risque ni dommage sur l'ouvrage. (fr)
- The project design flood is a hypothetical "maximum probable" flood of the Mississippi River used by the United States Army Corps of Engineers to aid in the design and execution of flood protection in the Mississippi Valley. The current project design flood was developed in 1956 by the Mississippi River Commission with input from the Weather Bureau. It is based on a scenario of three rain events in the lower Mississippi Valley occurring 3 days apart: the January 1937 (increased by 10%), January 1950, and then the February 1938 rain event with its center adjusted 90 miles (140 km) to the north and rainfall pattern rotated to achieve a hypothetical worst-case flood of the tributaries of the Mississippi River. Assumptions were made based on the completion of tributary reservoirs and dams by 1960. When the Commission reviewed the plan after the 1973 Mississippi River floods, the Project Design Flood in use was determined to be "based on sound technology that was still reliable by current standards. The project design flood peak discharges remained unchanged." Once the project design flood was developed, flow rates at critical points are used to determine how high levees need to be, how deep the dredging needs to be, and the flowrates at which flood control structures need to be used. (en)
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