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Category: Water Management - Missouri River
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  • 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.

  • Fall public meetings on Missouri River operations set for Oct. 22-25

    Seven public meetings will be conducted throughout the basin Oct. 22-25. The purpose of these meetings is to update the region on current hydrologic conditions and review operation of the mainstem reservoir system. Presenters include staff from the National Weather Service and the USACE Missouri River Water Management Division.

  • Corps hosts call to update stakeholders on reservoir storage plans

    Record rains in the Upper Missouri Basin during the first two weeks of September, has prompted changes to releases from the Missouri River Mainstem dams. An ad-hoc conference call was held Monday, Sept. 16, to provide an update to basin stakeholders. About 100 callers representing elected officials, emergency managers, levee sponsors and the media participated on the call.

  • Releases from Gavins Point Dam changing

    Recent rains are bringing more changes to releases from the Missouri River Mainstem System of dams. According to the National Weather Service, rainfall during first two weeks of September have brought between 200 and 600% of normal rainfall over the entire Missouri River Basin. The NWS has issued river several river flood alerts and warnings.  In response to these changing conditions the U.S. Army Corps of Engineers is planning the following changes to the releases at Gavins Point Dam.  Intra-system releases will be adjusted to account for the changes at Gavins Point Dam.