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Category: Northwestern Division, U.S. Army Corps of Engineers
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  • 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.

  • Weekly Missouri Basin flood response update – 8/29

    U.S. Army Corps of Engineers emergency and water management officials held a call August 29 to communicate an update of current runoff conditions, system storage and a status of flooding response and recovery activities. Next week will mark the beginning of monthly calls. The first call will include a webinar in a format similar to the Monthly Update Webinars which are usually held from January until June or July and were an initiative launched in 2012. The most recent of these webinars was held March 7, 2019, and included a Spring Hydrologic Outlook from the National Weather Service, Missouri Basin River Forecast Center.

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