Missouri River Basin Water Management U.S. Army Corps of Engineers, Northwestern Division

May runoff for the Basin above Sioux City, Iowa was 3.5 MAF,104% of average. The annual runoff forecast above Sioux City, Iowa is 21.0 MAF, 82% of average, and 1.8 MAF higher than last month’s forecast. System storage is currently 55.0 MAF, 1.1 MAF below the top of the carryover multiple use zone. During May, System storage increased 1.0 MAF.

Test flows from Fort Peck Dam to comply with the 2018 Biological Opinion were lowered to a target of 10,000 cfs (at Wolf Point) and start increasing around mid-June to reach 22,000 cfs. The test is required under the Endangered Species Act for operation of the Missouri River Mainstem Reservoir System. These weekly virtual meetings are aimed at updating the public on test progress, monitoring and planned operations.

Test flows from Fort Peck Dam to comply with the 2018 Biological Opinion were lowered to a target of 10,000 cfs (at Wolf Point) and start increasing around June 11 reachng 22,000 cfs on June 20. The test is required under the Endangered Species Act for operation of the Missouri River Mainstem Reservoir System. These weekly virtual meetings are aimed at updating the public on test progress, monitoring and planned operations.

Test flows from Fort Peck Dam to comply with the 2018 Biological Opinion were lowered to a target of 10,000 cfs (at Wolf Point) and will held through mid-June. The test is required under the Endangered Species Act for operation of the Missouri River Mainstem Reservoir System. These weekly virtual meetings are aimed at updating the public on test progress, monitoring and planned operations.

Test flows from Fort Peck Dam to comply with the 2018 Biological Opinion were lowered to a target of 10,000 cfs (at Wolf Point) and will held through mid-June. The test is required under the Endangered Species Act for operation of the Missouri River Mainstem Reservoir System. These weekly virtual meetings are aimed at updating the public on test progress, monitoring and planned operations.

Spring precipitation in the Missouri River Basin brought some much-needed moisture. April runoff was 2.1 MAF, 71% of average, for the basin above Sioux City, Iowa. The annual runoff forecast for the upper Missouri River Basin above Sioux City is 19.2 MAF, 75% of average, and 1.7 MAF higher than last month’s forecast. Drought conditions in the upper Basin are likely to persist. System storage is 49.9 MAF, 6.2 MAF below the top of the carryover multiple use zone.