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  • Drought conditions persist in the upper Missouri River Basin

    Drought conditions continue to impact the upper Missouri River Basin above Sioux City, Iowa (upper Basin). July runoff in the upper Basin was 34% of average. July runoff above Fort Peck Dam was the lowest in 123 years of record-keeping. The updated 2021 upper Basin runoff forecast is 14.6 million acre-feet (MAF), 57% of average. If realized, this runoff amount would be the 10th driest year in the upper Basin since 1898. System storage on August 1 was 53.9 MAF, 2.2 MAF below the base of the Annual Flood Control and Multiple Use Zone. System storage is expected to decline further into the Carryover Multiple Use Zone during the remainder of 2021.

  • Cyanobacteria Harmful Algal Blooms (HABs) and US Army Engineer Research and Development Center (ERDC): Research and Services

    Abstract: This factsheet details the research and services available from the US Army Engineer Research and Development Center–Environmental Laboratory’s Harmful Algal Blooms team.

  • USACE implements drought conservation measures

    Water conservation measures were enacted for the second half of the navigation flow support season based on the July 1 Missouri River Mainstem Reservoir System storage, per the guidelines outlined in the Master Manual. Very dry conditions continue to impact the upper Missouri River Basin above Sioux City, IA (upper Basin) despite recent heavy rainfall in the lower Basin. As a result of the low precipitation and widespread drought conditions, June runoff in the upper Basin was 52% of average. The updated 2021 upper Basin runoff forecast is 15.6 million acre-feet (MAF), 60% of average. If realized, this runoff amount would be the 10th driest year in the upper Basin since 1898. System storage on July 1 was 55.2 MAF, 0.9 MAF below the base of the Annual Flood Control and Multiple Use Zone. System storage is expected to decline further into the Carryover Multiple Use Zone during the remainder of 2021.

  • Missouri River navigation support; full-length season, reduced service levels

    The Missouri River Water Management Division will reduce navigation flow support beginning today for the second half of the navigation flow support season.  “We continue to monitor conditions throughout the basin and make adjustments as necessary. We will provide a full update for key stakeholders and the media on our regular July 8 call,” said John Remus, chief of the Missouri River Water Management Division. 

  • Upper basin runoff forecast continues to be below average

    After our June communication materials were sent, we received a few calls from the public seeking clarification on planned releases from Gavins Point Dam. The press release has been updated to highlight this information. Below-average precipitation and dry soil conditions persist in the upper Missouri River Basin above Sioux City, IA (upper Basin). The updated 2021 upper Basin runoff forecast is 17.9 million acre-feet (MAF), 69% of average. If realized, this runoff amount would be in the 22nd driest year in the upper Basin since 1898.

  • The Demonstration and Validation of a Linked Watershed-Riverine Modeling System for DoD Installations: User Guidance Report Version 2.0

    Abstract: A linked watershed model was evaluated on three watersheds within the U.S.: (1) House Creek Watershed, Fort Hood, TX; (2) Calleguas Creek Watershed, Ventura County, CA; and (3) Patuxent River Watershed, MD. The goal of this demonstration study was to show the utility of such a model in addressing water quality issues facing DoD installations across a variety of climate zones. In performing the demonstration study, evaluations of model output with regards to accuracy, predictability and meeting regulatory drivers were completed. Data availability, level of modeling expertise, and costs for model setup, validation, scenario analysis, and maintenance were evaluated in order to inform installation managers on the time and cost investment needed to use a linked watershed modeling system. Final conclusions were that the system evaluated in this study would be useful for answering a variety of questions posed by installation managers and could be useful in developing management scenarios to better control pollutant runoff from installations.

  • 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.

  • Water Management assesses water quality in Cumberland River Basin

    NASHVILLE, Tenn. (May 5, 2021) – The Water Quality Team, a component of the Water Management Section within the U.S. Army Corps of Engineers Nashville District, routinely collects water quality information at the 10 reservoir projects in the Cumberland River Basin.

  • 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.