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USACE increases releases from Fort Peck and Garrison Dams

Releases from Fort Peck and Garrison Dams were increased due to high inflows from rapidly melting mountain snowpack. Garrison Dam releases were stepped up from 37,000 cfs in early May to 39,000 cfs by May 23. Fort Peck Dam releases were gradually increased from 14,000 cfs in mid-May to 17,000 cfs by May 22. The Fort Peck Dam release is higher than the maximum powerhouse release, so releases are being made from both the powerhouse and spillway. Releases from Fort Peck and Garrison are expected to remain at these rates into the summer. [Read More]
Published: May-22-18

Missouri River Mainstem projects will maintain higher than average releases

The U.S. Army Corps of Engineers (Corps) Missouri River Basin Water Management Division plans to maintain higher-than-average releases from all System projects, including Gavins Point, over the next several months. Due to higher-than-average runoff being forecast in the Missouri River Basin above Sioux City, Iowa, we have increased the service level 15,000 cubic feet per second (cfs) above full service to facilitate the evacuation of stored flood waters. The increased service level means that Gavins Point releases may be increased to 42,000 cfs, and possibly higher, as downstream tributary flows recede. [Read More]
Published: May-08-18

Missouri River public meetings scheduled for April 17-19 throughout basin

The U.S. Army Corps of Engineers (Corps) Missouri River Basin Water Management Division will be conducting five public meetings throughout the basin April 17-19. The purpose of these meetings is to update the region on current hydrologic conditions and the planned operation of the mainstem reservoir system during the coming months. The 2018 runoff forecast in the Missouri River Basin above Sioux City, Iowa, is 30.2 million acre feet (MAF), 119 percent of average according to the Corps. “The updated forecast increased slightly from last month due to the continued accumulation of mountain and plains snowpack in the upper basin,” said John Remus, Chief of the Missouri River Basin Water Management Division. “Based on the current plains and mountain snowpack and precipitation outlooks, runoff into the Fort Peck and Garrison reservoirs is expected to be above average from March through August,” said Remus. For comparison, the 2017 runoff was 29.6 MAF, 117 percent of average. [Read More]
Published: Apr-05-18

2018 runoff forecast above average; Public meetings to be held April 17-19

The 2018 runoff forecast in the Missouri River Basin above Sioux City, Iowa, is 29.0 million acre feet (MAF), 115 percent of normal according to the U.S. Army Corps of Engineers (Corps) Missouri River Water Management Division. “The updated forecast increased from last month due to the continued accumulation of mountain and plains snowpack in the upper basin,” said John Remus, Chief of the Missouri River Basin Water Management Division. “Based on the current plains and mountain snowpack, runoff into the Fort Peck and Garrison reservoirs is expected to be above average from March through July,” said Remus. [Read More]
Published: Mar-06-18

Reservoir system prepared for 2018 runoff season

All 2017 stored flood waters were evacuated from the Missouri River mainstem reservoir system (System) as of January 15, when the total volume stored in the System reached 56.1 million acre-feet (MAF), according to the U.S. Army Corps of Engineers (Corps) Missouri River Water Management Division. “The System stands ready to capture spring runoff, reducing flood risk while providing support to other authorized project purposes,” said John Remus, Chief of the Missouri River Basin Water Management Division. [Read More]
Published: Feb-06-18

Preparing system for upcoming runoff season; Near normal runoff forecast for 2018

U.S. Army Corps of Engineers is continuing to prepare the Missouri River Mainstem Reservoir System (System) for the upcoming runoff season. Current Gavins Point Dam releases are 21,500 cubic feet per second (cfs). Gavins Point Dam winter releases normally range between 12,000 and 17,000 cfs. The total volume of water stored in the System is currently 56.3 million acre-feet (MAF), occupying 0.2 MAF of the 16.3 MAF combined flood control storage zones. Based on current soil moisture conditions, plains and mountain snowpack, the 2018 calendar year runoff forecast is 26.6 MAF above Sioux City, IA, 105 percent of average. Average annual runoff is 25.3 MAF. [Read More]
Published: Jan-09-18

Releases from Gavins Point Dam reduced to winter rate

Gavins Point Dam releases began the reduction to the winter release rate of 21,500 cubic feet per second (cfs) on December 4. “Based on the September 1 system storage, Gavins Point Dam winter releases will be at least 17,000 cfs. However, higher-than-normal runoff during the late summer and fall will allow us to provide a slightly higher release during the winter months. Higher winter releases will provide additional hydropower generation during the winter, which is one of the peak power demand periods. It will also benefit municipal and industrial water intakes below Gavins Point Dam, which can be impacted by low water levels during periods of ice formation,” said John Remus, chief of the U.S. Army Corps of Engineers’ (Corps) Missouri River Basin Water Management Division. Gavins Point Dam winter releases normally range between 12,000 and 17,000 cfs. [Read More]
Published: Dec-06-17

Releases from Gavins Point Dam to be reduced to winter release rate in late November

Gavins Point Dam releases will remain near 31,000 cubic feet per second (cfs) for the first half of November and then increased to 32,000 cfs. Releases will be held at that rate until late November and then stepped down approximately 3,000 cfs each day until they reach the winter release rate. “Based on the September 1 system storage, Gavins Point Dam winter releases will be at least 17,000 cubic feet per second (cfs). However, higher than normal runoff during the late summer and fall will allow us to provide a slightly higher release during the late fall and winter months. Higher winter releases will provide additional hydropower generation during the winter, one of the peak power demand periods. It will also benefit municipal and industrial water intakes below Gavins Point Dam, which can be impacted by low water levels during periods of ice formation,” said John Remus, chief of the U.S. Army Corps of Engineers’ Missouri River Basin Water Management Division. Gavins Point Dam winter releases normally range between 12,000 and 17,000 cfs. [Read More]
Published: Nov-06-17

Gavins Point releases reduced to lessen downstream flooding; public meetings set for mid-October

Gavins Point releases were reduced from 31,000 cubic feet per second (cfs) to 26,000 cfs to lessen downstream flooding. Heavy rainfall in the lower Missouri Basin resulted in increased tributary flows below the Missouri River Mainstem Reservoir System (System). Gavins Point releases will be increased back to 31,000 cfs as downstream flows recede. Fort Randall releases were reduced to as low as 19,500 cfs to limit the rise of the Gavins Point reservoir level, which was impacted by high runoff from localized rain and reduced releases. [Read More]
Published: Oct-10-17

Gavins Point winter releases determined; Corps to hold public meetings in mid-October

Based on the September 1 System storage check, the U.S. Army Corps of Engineers (Corps) announced that the Gavins Point winter release rate will be at least 17,000 cfs. The total volume of water stored in the Mainstem Reservoir System is currently 60.2 MAF, occupying 4.1 MAF of the 16.3 MAF combined flood control storage zones. “System storage peaked on July 9 at 61.8 MAF and is gradually declining. The water currently stored in the annual flood control zone will be released during the remainder of the year to serve navigation, water supply and other downstream purposes and will be completely evacuated prior to the start of next year’s runoff season,” said John Remus, chief of the Corps’ Missouri River Basin Water Management Division. Garrison releases will be reduced from the current release rate of 30,000 cubic feet per second (cfs) to the fall rate of 20,000 cfs beginning September 10. Missouri River stages in the Bismarck area will decline about 3.0 feet due to the release reduction from Garrison. [Read More]
Published: Sep-06-17
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