A warm February led to increased snowmelt and runoff in the Missouri River Basin above Sioux City, Iowa. February runoff was 1.8 million acre-feet, 161% of average with above average runoff in every reach except Sioux City, which was near average. However, the updated 2024 calendar year runoff forecast for the basin continues to be below average.
“Despite the increased runoff in the month of February, and improved soil moisture conditions, we expect 2024 runoff to remain below average,” said John Remus, chief of the U.S. Army Corps of Engineers’, Missouri River Basin Water Management Division. “The much warmer-than-normal temperatures led to an early melt of the lower-than-average plains snow. In addition, mountain...
After an agreement to stay the Columbia River Basin litigation for up to 10 years, federal water managers will begin spilling more water over basin dams this spring than in past years. In the agreement, the U.S. Army Corps of Engineers (USACE) has committed to spill more water over spillways instead of through turbines during its annual âspring spillâ operations at dams on the lower Snake and Columbia rivers as well as expanding spill in...
U.S. Army Corps replaces and improves small locks' mechanical, electrical and controls equipment Feb. 26, at the Hiram M. Chittenden Locks, Seattle. Phase one, part of a multiphase project, includes concrete demolition and cutting for new operating equipment and electrical runways, and should be complete Sept. 6, 2024.
The U.S Army Corp of Engineers, Omaha District joined the Rocky Mountain Region Society of American Military Engineers for an industry day in Colorado Springs, Colorado Jan. 23 to help build engineering partnerships.
System Storage Checks: March and July system storage checks help determine the level of flow support for navigation and other downstream purposes as well as the navigation season length. March 15 - used to set service level for first half of the navigation season. July 1 - used to set service level for second half of navigation season and set season service length. September 1 - used to set the winter System release rate.
he dam is 7,365 feet long, rising approximately 183 feet above the streambed. It consists of a concrete structure with an earthfill embankment at the Oregon (south) abutment. The spillway is a concrete, gravity-type spillway dam. It is 1,310 feet long, and contains 22 vertical lift gates, each 50 feet by 51 feet. The crest is at elevation 291 feet mean sea level and is designed to pass a flood of 2,200,000 cubic feet per second.
U.S. Army Corps of Engineers (USACE) has committed to spill more water over spillways instead of through turbines during its annual “spring spill” operations at dams on the lower Snake and Columbia rivers as well as expanding spill in the fall and early spring.