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Tag: Missouri River
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  • Modeling the Effect of Increased Sediment Loading on Bed Elevations of the Lower Missouri River

    Purpose: This US Army Corps of Engineers (USACE) National Regional Sediment Management Technical Note (RSM-TN) documents the effects of increased sediment loading to the Missouri River on bed elevations in the lower 498 miles. This was accomplished using a one-dimensional (1D) HEC-RAS 5.0.7 sediment model.
  • Drought conditions driving lowered runoff forecast

    Very dry conditions in April resulted in very low runoff in the upper Missouri River Basin. The upper Basin runoff was 44% of average, which was the 9th driest April in 123 years of record. The updated 2021 upper Basin runoff forecast is 17.8 million acre-feet (MAF), 69% of average, which, if realized, would rank as the 22nd lowest calendar year runoff volume.
  • 2021 runoff forecast remains below average; Virtual spring public meetings April 6

    Reservoir inflows in the Missouri River basin above Sioux City, Iowa (upper Basin) were well-below average in March. The updated 2021 upper Basin runoff forecast is 21.3 million acre-feet (MAF), 83% of average.
  • Missouri River virtual spring public meetings to be held April 6

    The Missouri River Water Management Division invites the public to participate in one of two virtual public meetings scheduled for April 6. The meetings will take place at 1 p.m. and 6 p.m. central time. Details for connecting to each webinar is posted to our website.
  • Corps completes decision on renewal of Missouri River commercial dredging permits

    The U.S. Army Corps of Engineers (USACE), Kansas City District has evaluated applications to renew commercial dredging permits for the Missouri River. USACE has renewed permits for six commercial dredging companies currently authorized to extract sand and gravel from the Missouri River.
  • Corps restores L-536 to full height

    As part of the ongoing repairs to Missouri River Levee System L-536 in northwest Missouri, contractors for the U.S. Army Corps of Engineers-Omaha District have returned the levee system to its pre-flood height.
  • 2021 runoff forecast remains below average; Virtual spring public meeting set for April 6

    *** Updated to add links to schedule for virtual public meetings *** Reservoir inflows in the Missouri River basin above Sioux City, Iowa (upper Basin) were well-below average in February. The 2021 calendar year runoff forecast for the upper basin remains below average. “Very cold February temperatures in the upper Basin locked up tributaries in ice and reduced inflows to the System reservoirs,” said John Remus, chief of the U.S. Army Corps of Engineers’, Missouri River Basin Water Management Division. “Mountain snowpack continues to accumulate in the Rocky Mountains; however, plains snowpack is well-below seasonal averages and soil moisture continues to be much drier than normal.”
  • Kansas City Corps of Engineers updates Missouri River channel and river structure repairs

    The Kansas City District, U.S. Army Corps of Engineers provides a report on the actions taken to repair and mitigate damage done to river structures on the Missouri River from high water over the last several years including major flooding in 2019.
  • Gavins Point releases increased slightly ahead of colder temperatures

    The U.S. Army Corps of Engineers increased Gavins Point releases from 17,000 cubic feet per second to 19,000 cfs at noon Friday. The National Weather Service’s forecast indicates the lower Missouri River basin will experience extreme cold temperatures for the next 7-10 days. The much colder temperatures have the potential to cause or exacerbate ice formation on tributaries and the mainstem of the lower Missouri River.
  • Below average runoff forecast for the upper Missouri River Basin in 2021

    **Updated to correct errors in hydropower table.** The updated 2021 calendar year runoff forecast for the Missouri River Basin above Sioux City, Iowa, continues to be below average. “Despite runoff being slightly above average in January, we expect 2021 runoff to be below average,” said John Remus, chief of the U.S. Army Corps of Engineers’, Missouri River Basin Water Management Division. “Both plains snowpack and mountain snowpack continue to lag behind seasonal averages, and soil moisture continues to be much drier-than-normal.”