US Army Corps of Engineers
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Category: Water Management - Missouri River
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  • Corps steps down releases from Gavins Point Dam to winter release rate

    The U.S. Army Corps of Engineers began reducing Gavins Point releases to the winter release rate on Nov. 30. The releases will be stepped down at a rate of 3,000 cubic feet per second per day until they reach 27,000 cfs where they are expected to remain through December. Releases will be reduced to 25,000 cfs in January and remain near that rate for the remainder of the winter. Gavins Point Dam winter releases normally range between 12,000 and 17,000 cfs. Higher-than-average winter releases from the Missouri River Mainstem System projects, including Gavins Point, continue emptying water from the 2019 runoff season still in storage.
  • Releases reductions from at Missouri River dams to begin Wednesday

    Releases reductions from Missouri River mainstem dams will begin Wednesday, Nov. 20 at Garrison Dam. Release reductions are also scheduled for Friday, Nov. 22 at Fort Randall Dam and Saturday, Nov. 23 at Gavins Point Dam. Inflows into reservoirs at Fort Randall and Gavins Point Dams since Nov. 1 have been lower than forecasted, and the reservoir elevation at Garrison Dam is declining faster than forecasted meaning Missouri River Mainstem System storage is declining faster than planned.
  • Missouri Basin flood response update – 11/7

    U.S. Army Corps of Engineers emergency and water management officials held a call Nov. 7 to communicate to Midwest Congressional representatives, Tribal, state and local government officials (including levee sponsors and emergency managers) an update of current runoff conditions, system storage and a status of flooding response and recovery activities.
  • Releases aimed at preparing Missouri River Reservoir System for 2020 runoff season

    Higher-than-average releases from all Missouri River Mainstem System projects, including Gavins Point Dam, will continue through November, the U.S. Army Corps of Engineers announced today. Runoff in all reaches except for the Fort Randall reach was above average for the month of October. The Garrison to Oahe reach runoff was over six times the long-term average and runoff in the Gavins Point to Sioux City reach was more than 10 times the long-term average. The 2019 upper basin runoff forecast was lowered slightly to 60.2 million acre-feet. If realized, this runoff total would be 0.8 MAF less than 2011 (61.0 MAF), which is the highest runoff in 121 years of record-keeping. The January-October observed runoff (56.7 MAF) has already exceeded the second highest runoff, 49.0 MAF observed in 1997, with two months still remaining.
  • Missouri Basin flood response update – 10/11

    U.S. Army Corps of Engineers emergency and water management officials held a call Oct. 10 to communicate to Midwest Congressional representatives, Tribal, state and local government officials (including levee sponsors and emergency managers) an update of current runoff conditions, system storage and a status of flooding response and recovery activities.
  • Releases from Missouri River projects to remain at high levels for fall and winter; Public meetings set for Oct. 22-25

    Widespread and heavy rainfall in the Missouri River basin above Sioux City, IA (upper basin) resulted in another month of much above average runoff. Precipitation during September was more than 200 percent of normal in eastern Montana, much of North Dakota, portions of South Dakota and northern Nebraska. As a result, September runoff into the upper basin above Sioux City, was nearly twice the record runoff, which was recorded in 1986.