News Releases

Keeping key stakeholders informed of regional response

Northwestern Division
Published June 25, 2024
Updated: June 26, 2024
National Weather Service map showing river stages and forecasts in the Missouri River Basin.Ranging from Green to Red, dots show areas of no flood (green), yellow (action flood), orange (minor flood), red (moderate flood), and purple (major flood). Squares show forecasts and Circles show observations.

National Weather Service map showing river stages and forecasts in the Missouri River Basin. Extremely heavy rains fell June 20-23 in southeastern South Dakota, southwestern Iowa, and central and northeastern Nebraska resulting in devastating flooding on many uncontrolled tributaries that join the Missouri River downstream of Gains Point Dam. The U.S. Army Corps of Engineers Omaha and Kansas City Districts are providing support to communities in the region.

Key stakeholders in the upper Midwest are staying informed with daily conference calls.

Following extremely heavy rain in southeastern South Dakota, northwestern Iowa, and central and northeastern Nebraska, officials from the National Weather Service, the U.S. Army Corps of Engineers' Missouri River Water Management Division and the Omaha and Kansas City Districts are holding daily calls to keep key stakeholders including Congressional representatives, Tribal, state and local government officials, levee sponsors, emergency managers, and the media informed of actions along uncontrolled tributaries in the region and the Missouri River.

These calls include runoff conditions and weather forecasts, reservoir release plans, and the Omaha and Kansas City Districts report details about support they are providing to local communities in the affected areas,

Recordings are posted to the Defense Video and Imagery Distribution Service for media reuse at are available for free on all podcast applications under the name "Missouri River Basin Water Management."

From the National Weather Service Missouri Basin River Forecast Center:

Tributaries that enter the Missouri River after Gavins Point Dam

  • James River, South Dakota, crested the night of June 24, at 22.17 feet with flows around 27,000 cubic feet per second
  • Vermillion River at the mouth crested on the evening of June 24 at 32.7 feet with flows at nearly 34,000 cfs
  • Big Sioux at Sioux City, Iowa, crested the afternoon of June 24 at 44.98 feet with flows of about 96,000 cfs
  • Floyd River at the mouth crested the morning of June 23 at 32.39 feet with flows of nearly 46,000 cfs
  • Little Sioux River was forecast to crest overnight June 25, at 27.6 feet with flows of around 42,000 cfs 

Crests on the Missouri River main stem after Gavins Point Dam 

  • At Sioux City the crest passed the morning of Tuesday, June 25, at 32.2 feet should remain above flood stage until mid-day June 26
  • At Omaha the afternoon of Thursday, June 27, at 35.4 feet
  • At Nebraska City the morning of Friday, June 28, at 25.2 feet
  • At Brownville the morning of Saturday, June 29, at 42.2 feet 
  • At Rulo the evening of Saturday, June 29, at 23.8 feet

*These forecasts are subject to change and include any rainfall forecast for the next 24 hours. 

And finally Rulo expecting a crest of 23.8 Saturday night into Sunday morning. Looking ahead as far as rain chances, there's rain chances somewhere just about every day moving forward, but nothing.

Preliminary indications show the following river stage records set following the rains that fell between June 20 and 23. 

These are provisional stage records with this event. They have not been verified for accuracy and are a comparison of recent crests compared to the record stages and times.  The U.S. Geological Survey typically verifies data for historical records.

All rivers are tributaries that join the Missouri River after Gavins Point Dam.

River Location Station ID new record (feet) new time old record (feet) old time 
Big Sioux Akron AKRI4 27.34 2024-06-23 03:00:00 25.59 2014-06-18
Floyd Alton ALTI4 26.81 2024-06-22 16:00:00 21.96 2018-09-20
Little Sioux Correctionville CRRI4 31.52 2024-06-24 20:30:00 26.45 2019-03-15
Vermillion Davis DVSS2 17.9 2024-06-22 22:00:00 16.4 2010-03-15
Big Sioux Hawarden HWDI4 40.94 2024-06-22 19:15:00 35.2 2019-03-15
Floyd James JMEI4 36.32 2024-06-23 14:15:00 31.48 2019-03-15
Little Sioux Linn Grove LNNI4 29.98 2024-06-23 18:15:00 24.13 2019-03-16
Little Sioux Milford MIFI4 22.6 2024-06-22 18:00:00 20.1 2018-06-25
Floyd River Merrill MRLI4 20.27 2024-06-23 05:00:00 20 1926-09-18
West Fk Vermillion Parker PKRS2 15.4 2024-06-22 07:15:00 13.14 1993-05-08
Rock R Rock Rapids RAPI4 28.65 2024-06-22 08:30:00 26.98 2014-06-17
Rock R Rock Valley RKVI4 28.54 2024-06-22 14:15:00 22.72 2014-06-17
Ocheyedan Spencer SPOI4 17.2 2024-06-22 14:30:00 14.75 2019-03-14
Big Sioux Sioux City SXCI4 44.98 2024-06-24 03:30:00 37.7 2014-06-20
Vermillion Davis VERS2 32.74 2024-06-24 12:30:00 29.87 2019-03-16
Vermillion Wakonda WKAS2 18.93 2024-06-22 20:15:00 18.11 2019-03-15

Future rainfall can be viewed here:

The public can also view future precipitation here:

Releases from Gavins Point Dam

Releases from Gavins Point Dam are 24,000 cfs with 15,000 cfs through the spillway and 9,000 cfs through the power house.

Releases from Fort Randall Dam 

Minimal with periods of zero release. 

The Omaha and Kansas City Districts are providing information and support to levee sponsors and local emergency managers with several teams dispatched across the region.

More details are provided in the call and from each District. 



Eileen Williamson

Release no. 24-017