Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS), with a target of Spring 2024. Existing AHPS content and features will be preserved and expanded within NWPS. The NWS is now accepting feedback on NWPS. Please visit https://www.weather.gov/owp/operations for more information.

Experimental National Water Center Products: Flood Inundation Mapping services are now available for 10% of the U.S. population. Please visit https://www.weather.gov/owp/operations for more information. The National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via the URL above, as described in the StoryMap here.

Weather Forecast Office Bismarck, ND

Missouri Basin River Forecast Center

Hydrograph

River at a Glance

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Probability Information Weekly Chance of Exceeding Levels Chance of Exceeding Levels During Entire Period Short-term Probabilistic Guidance (Experimental)

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Printable Image About this graph Tabular Data (UTC) Tabular Data (MST) Datum: NAVD88 Metadata

NOTE: River Forecasts typically include ONLY 2 days of future rain from forecast issuance time (lower right of graph). Occasionally 3 days of future rain included. NOTE: Forecasts for the Little Missouri River at Medora are issued as needed during times of high water, but are not routinely available.

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Upstream Gauge

Downstream Gauge

Flood Categories (in feet) Major Flood Stage: 20 Moderate Flood Stage: 18 Flood Stage: 15 Action Stage: 13 Low Stage (in feet): -9999 Historic Crests (1) 20.50 ft on 03/23/1947 (2) 20.39 ft on 05/25/2011 (3) 18.68 ft on 03/11/1972 (4) 18.57 ft on 03/25/2019 (5) 17.32 ft on 04/08/1952 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 3.88 ft on 03/09/2021 (2) 15.71 ft on 03/02/2020 (3) 18.57 ft on 03/25/2019 (4) 12.92 ft on 04/16/2018 (5) 10.20 ft on 02/19/2017 Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records Currently none available. For more information on your flood risk go to www.floodsmart.gov. Show FEMA's National Flood Hazard Layers FEMA's National Flood Hazard Layers not showing? Why aren't the FEMA National Flood Hazard Layers showing on the ESRI Map? Possible reasons: There are no FEMA National Flood Hazard Layers for the location which you are viewing on ESRI Maps. The FEMA Web Mapping Service (WMS) is down. Note: Your zoom level may have changed. ESRI's zoom levels must be between 14 and 16 to show National Flood Hazard layers.

Zoom Level:14 Legend FEMA Layer 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

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19	Much of the town of Medora is susceptible to flooding. The steep bank on the left side is subject to overflow.
18	Highway 10 begins to flood-town of Medora very flat and is subject to flooding.
17	A few rural homes next to the river near Medora may be flooded.
15	Right bank overflows and damages camping area on the west side of Medora.
13	Water backs up into ditches along Highway 10. Cottonwood campground-5 mi into park has water out of banksin very low spots. Campground and Visitor Center unharmed.
12	Low spots on right bank overflow.
Photos (1) Little Missouri River at Medora-Upstream View (2) Downstream View

About This Location

Latitude: 46.919444° N, Longitude: 103.527778° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 15 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps Vertical Datum Elevation (gauge height = 0) Elevation (gauge height = flood stage) Elevation information source NAVD88 2248.4 2263.4 Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks Other Not Available Not Available USGS elevation data. Current/Historical Observations: U.S. Geological Survey (USGS) Data and Site Info for Medora

Additional Information

How low could the river get?

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Inundation Mapping Locations

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Snow Information AHPS User Guide for the Public USGS ND River Data

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 Bismarck Weather Forecast Office 2301 University Drive, Building 27 Bismarck, ND 58502-1016 (701) 250-4224 Ask Questions/Webmaster Page last modified: 2-Nov-2020 7:29 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities