National Weather Service Advanced Hydrologic Prediction Service

weather.gov

Home

News

Organization

Search by city or zip code. Press enter or select the go button to submit request

National Conditions
    Rivers
    Satellite
    Climate
    Observed Precip

Local Conditions
    Warnings
    Weather Forecast
    Radar

AHPS Documentation
User Guide
User Brochure

What is AHPS?
Facts
Our Partners

Feedback/Questions
Provide Feedback
Ask Questions

This probabilistic forecast is issued by the Missouri Basin River Forecast Center.

	Hydrograph			River at a Glance			Download			Probability Information Weekly Chance of Exceeding Levels Chance of Exceeding Levels During Entire Period Short-term Probabilistic Guidance (Experimental)

About this graph

Forecasts for the Missouri River at Decatur are issued as needed during times of high water, but are not routinely available.

Return to Area Map

Upstream Gauge

Downstream Gauge

Zoom Level:14

Flood Categories (in feet)

Major Flood Stage:	41
Moderate Flood Stage:	38
Flood Stage:	35
Action Stage:	33
Low Stage (in feet):	-9999

Historic Crests
(1) 44.41 ft on 04/16/1952
(2) 40.24 ft on 07/21/2011
(3) 36.51 ft on 03/17/2019
(4) 36.42 ft on 09/20/2019
(5) 35.72 ft on 06/03/2019
(6) 34.60 ft on 06/26/1984
(7) 32.31 ft on 07/18/1996
(8) 32.19 ft on 07/16/1993
(9) 32.18 ft on 06/27/2018
(10) 31.99 ft on 04/15/1997
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 21.80 ft on 09/01/2021
(2) 27.64 ft on 04/02/2020
(3) 36.42 ft on 09/20/2019
(4) 35.72 ft on 06/03/2019
(5) 36.51 ft on 03/17/2019
(6) 32.18 ft on 06/27/2018
(7) 24.69 ft on 05/30/2017
(8) 23.64 ft on 06/19/2016
(9) 22.57 ft on 07/11/2015
(10) 31.01 ft on 06/20/2014
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 13.78 ft on 01/09/1989

	Gauge Location	Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.

Flood Impacts & Photos

If you notice any errors in the below information, please contact our Webmaster
44	Widespread major flooding would be prevalent along the entire reach from just upstream of Decatur downstream to the mouth of the Little Sioux River.
38.8	This level represents a flood that has a 0.2-percent chance of being equaled or exceeded in any given year. For more information click here.
38	Extensive flooding along the reach would be encountered. Areas impacted will include Marina Drive as well as numerous homes along the river.
36.3	This level represents a flood that has a 1-percent chance of being equaled or exceeded in any given year. For more information click here.
35	Local marinas, boat docks and low lying areas begin to flood.
Photos (1) Looking downstream (2) Looking upstream (3) Gage house (4) Radar Gage

Other Real-time and/or Archive Data Sources:

U.S. Geological Survey (USGS) Data and Site Info for Decatur

Additional Information

The graph below is from the USGS and represents river discharge.

USGS 7-Day Streamflow Duration Hydrograph for this location:

USGS Cumulative Streamflow Hydrograph for this location:

How low could the river get?

Collaborative Agencies

The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.

NWS Information

National Weather Service
Omaha/Valley Weather Forecast Office
6707 N. 288th Street
Valley, NE 68064-9443
(402) 359-5166
Ask Questions/Webmaster
Page last modified: 2-Nov-2020 7:29 PM

Disclaimer
Credits
Glossary