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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)

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About this graph Tabular Data (UTC) Tabular Data (CST) Datum: NGVD29 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: Stage may be affected by ice. NOTE: Forecasts for the Elkhorn River at Norfolk 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: 17 Moderate Flood Stage: 13 Flood Stage: 12 Action Stage: 10 Low Stage (in feet): -9999 Historic Crests (1) 17.22 ft on 06/15/2010 (2) 15.63 ft on 03/11/1949 (3) 15.59 ft on 03/14/2019 (4) 13.05 ft on 05/31/1995 (5) 11.80 ft on 05/13/1944 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 4.44 ft on 03/15/2021 (2) 5.52 ft on 05/25/2020 (3) 15.59 ft on 03/14/2019 (4) 5.68 ft on 06/26/2018 (5) 6.62 ft on 10/10/2017 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: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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19.5	Water reaches the bottom of the Highway 81 bridge.
19.25	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.
17	The local levee protecting Tahazouka Park is overtopped.
16	At 16.0 feet, U.S. Highway 81 will begin to be overtopped.
13	The river is bankfull within the city limits of Norfolk. Outside the Norfolk area, serious flooding of lowlands and bridge approaches take place. Some county roads and rural homes flood.
12	Considerable lowland flooding and approaches to bridges flood upstream and downstream of the gage for several miles.
10	The trail under Highway 81 begins to flood.
Photos (1) Gage house (2) Looking upstream (3) Looking downstream (4) Looking downstream, low flow (stage = 1.2 feet)

About This Location

Latitude: 42.003780° N, Longitude: 97.426033° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 12 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 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps NGVD 29 1500.95 ft 1512.95 ft 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 Norfolk

Additional Information

The graph below is from the USGS and represents river discharge. How low could the river get?

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Tabular River Summary (updated hourly) Area CoCoRaHS Reports (updated around 10 am)

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management 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: 2-Nov-2020 7:29 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities