Graphics by Joshua Plueger | U.S. Army Corps of Engineers, Northwestern Division | 10.06.2025
System storage on Oct. 1 was 50.4 Million Acre Feet combined storage in the six Missouri River Mainstem reservoirs. The stored water indicates winter releases from Gavins Point Dam will be a minimum of 12,000 cfs with navigation support season ending at the Mouth of the Missouri River on Dec. 1....
Graphics by Eileen Williamson | U.S. Army Corps of Engineers, Northwestern Division | 09.25.2025
Public meetings are scheduled for October 27, October 30, November 3 and November 4, 2025. Locations include Smithville, MIssouri; Nebraska City, Nebraska; Bismarck, N.D.; Pierre, S.D.; and Sioux City, Iowa with an online meeting scheduled for October 30. Details are on the USACE, Northwestern Division website at https://www.nwd.usace.army.mil/mrwm/public-meetings/...
Graphics by Andy Hayes | U.S. Army Corps of Engineers, Mobile District | 07.22.2024
Hydropower: Using the Force of Falling Water to Generate Electricity outdoor display panel
Graphics by Eileen Williamson | U.S. Army Corps of Engineers, Northwestern Division | 05.04.2023
MISSOURI RIVER MAINSTEM RESERVOIR DATA Pool Elevation (feet above mean sea level) Water in Storage (1,000 acre-feet) On April 30 Change in April On April 30 % of 1967-2022 Average Change in April Fort Peck 2221.9 +2.4 12,417 86 +443 Garrison 1829.2 +4.5 15,332 86 +1,239 Oahe 1599.8 +5.0 16,403 93 +1,368 Big Bend 1420.9 +0.3 1,683 99 +24 Fort Randall 1355.1 -0.7 3,430 103 -17 Gavins Point......
Graphics by Eileen Williamson | U.S. Army Corps of Engineers, Northwestern Division | 04.07.2023
The Elements of Runoff - Plains snow water equivalent for Upper Missouri River Basin Runoff - plains snow melt is typically complete by April. Mountain snow begins to accumulate in October, peaks in April and snowmelt is usually complete by mid-July. The April 1 runoff forecast is 26.4 million acre feet. The plains snow is hanging on late into the season, which means an increased risk for......
Graphics by Eileen Williamson | U.S. Army Corps of Engineers, Northwestern Division | 04.07.2023
MISSOURI RIVER MAINSTEM RESERVOIR DATA Pool Elevation (feet above mean sea level) On March 31 Change in March Water in Storage (1,000 acre-feet) On March 31 % of 1967-2022 Average Change in March Fort Peck 2219.5 +0.9 11,974 83 +154 Garrison 1824.7 -1.0 14,093 79 -263 Oahe 1594.8 +0.7 15,035 85 +182 Big Bend 1420.6 -0.3 1,659 97 -22 Fort......
Graphics by Eileen Williamson | U.S. Army Corps of Engineers, Northwestern Division | 04.07.2023
MISSOURI RIVER MAINSTEM RESERVOIR DATA Pool Elevation (feet above mean sea level) On March 31 Change in March Water in Storage (1,000 acre-feet) On March 31 % of 1967-2022 Average Change in March Fort Peck 2219.5 +0.9 11,974 83 +154 Garrison 1824.7 -1.0 14,093 79 -263 Oahe 1594.8 +0.7 15,035 85 +182 Big Bend 1420.6 -0.3 1,659 97 -22 Fort......
Graphics by Eileen Williamson | U.S. Army Corps of Engineers, Northwestern Division | 01.06.2023
For the 2022 calendar year, Missouri River basin runoff above Sioux City, Iowa totaled 19.3 million acre-feet, 75% of average. This was the 30th lowest annual runoff for the Missouri River Basin in 125 years of record-keeping. The ongoing drought shows little relief in sight and the U.S. Army Corps of Engineers predicts runoff into the mainstem reservoir system will remain below normal. For......
