ALERT: December 5th update on the status of the nationwide data transmission error preventing stream gauge data collected at affected locations from being displayed on the Advanced Hydrologic Prediction Services (AHPS) webpages. As of 11/08/2018, The USGS has restored all impacted operational stream gauges to transmitting status. The status map of gauge outages from other agencies is here. The outage map will be updated each Thursday. We apologize for the service interruption and hope to have the data restored as soon as possible.

Weather Forecast Office Omaha/Valley, NE

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) Not Available

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

NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time. NOTE: Forecasts for the Missouri River near Blair 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: 33 Moderate Flood Stage: 28.2 Flood Stage: 26.5 Action Stage: 23.5 Low Stage (in feet): 8 Historic Crests (1) 33.50 ft on 04/17/1952 (2) 32.73 ft on 06/29/2011 (3) 27.53 ft on 12/17/1969 (4) 27.48 ft on 06/27/1984 (5) 27.43 ft on 07/10/1993 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 27.01 ft on 06/28/2018 (P) (2) 20.32 ft on 10/08/2017 (3) 20.22 ft on 05/01/2016 (4) 18.93 ft on 07/29/2015 (5) 26.62 ft on 06/22/2014 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:12 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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34.12	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.
33.5	Water reaches levels not seen since the flood of 1952. Major flooding will be occurring from Blair to Fort Calhoun.
31.62	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.
30	Floodwaters will impact Interstate 29 in areas north of the Crescent and the Interstate 680 interchange.
26.5	Flooding is occurring in the Fort Calhoun area. This flooding affects several homes and includes County Roads 34, 47 and 51.
25	Minor flooding occurs at the Fort Calhoun trailer park.
23.5	Flooding begins to occur at Wilson Island State Park.
Photos (1) Gage house (2) Site overview (3) Looking downstream (4) Looking upstream

Low Water Impacts

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5	Water intake structures begin to be shutoff at this level.
8	Water intake structures along this stretch of the river begin to be monitored for possible exposure.

About This Location

Latitude: 41.550807° N, Longitude: 96.096865° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 26.5 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 977.473 1003.973 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   Current/Historical Observations: U.S. Geological Survey (USGS) Data and Site Info for Blair

Additional Information

How low could the river get?

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary KMZ file of NWS Omaha Flood Warning Polygons Tabular River Summary (updated hourly) Area CoCoRaHS Reports (updated around 10 am) Omaha Area Precipitation Summary (updated by 10:15 am)

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Flood Damage Costs/Fatalities in the US, 1903 - 2014 AHPS Web Brochure Drought Monitor Snowpack Information (Missouri River Basin) Snowpack Information (zoomed) Mountain Snowpack Information (USACE) Mountain Snowpack Information (from NRCS) USGS Water Alert AHPS Feedback

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: 21-Dec-2016 5:20 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities