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.

DID YOU KNOW... Please try our new TEST hydrograph page link at: https://preview.water.noaa.gov/gauges/abcde - Just replace “abcde” with your local hydrograph five character ID found in the lower left corner of the hydrograph.  In late March of 2024, the base URL path will become water.noaa.gov.  Feedback can be provided HERE

Weather Forecast Office Sioux Falls, SD

Missouri Basin River Forecast Center

Hydrograph

River at a Glance

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

NOTE: No forecasts are available for this location NOTE: Gauge reading may be affected by ice. NOTE: Forecasts are not available for the Little Rock River near George. Only observed stages are available for this point.

Default Hydrograph Scale to Flood Categories   Return to Area Map

Downstream Gauge

Flood Categories (in feet) Major Flood Stage: 1315.5 Moderate Flood Stage: 1313.5 Flood Stage: 1311.5 Action Stage: 1309.5 Low Stage (in feet): -9999 Historic Crests (1) 1,304.08 ft on 07/08/2020 (P): Preliminary values subject to further review. Recent Crests (1) 1,304.08 ft on 07/08/2020 (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:16 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

If you notice any errors in the below information, please contact our Webmaster
1321.5	the bridge on 230th Street is overtopped.
1320.5	the bridge on Indian Avenue is overtopped, and water reaches the bottom of the bridge on 230th Street.
1319.5	the bridge on Hickory Avenue is overtopped.
1318.5	the bridge on Jackson Avenue is overtopped, and water reaches the bottom of the brige on Indian Avenue.
1317.5	water reaches the bottom of the bridge on Hickory Avenue, and Hickory Avenue begins to flood south of the bridge.
1316.5	water reaches the bottom of the bridge on Jackson Avenue.
1315.5	County Road L14, 230th Street, 240th Street, and Indian Avenue begin to flood, and water overtops the bridges on 250th Street and County Road L14.
1314.5	water reaches the bottom of the bridge on County Road L14 south of George.
1313.5	major agricultural flooding begins. Water reaches the bottom of the bridge on 250th Street, and 250th Street begins to flood east of the bridge.
1311.5	significant agricultural flooding begins.
1309.5	the lower banks overtop with some minor agricultural flooding.
1307.5	the lowest banks near County Road L14 south of George overtop with minor lowland flooding.

About This Location

Latitude: 43.325400° N, Longitude: 96.097000° W, Horizontal Datum: NAD27 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 1311.5 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 0.00 1311.50 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

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Upper Missouri River Basin Monitoring Network Missouri Basin River Forecast Center North Central River Forecast Center NOHRSC Snow Information Drought Monitor USGS HADS River Stage Data Inundation Mapping Locations Precipitation Frequency Data South Dakota Flood Information System Iowa Flood Center Minnesota DNR FEMA Region VIII Flood Information ___

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management SDSU Climate and Weather SDSU Drought Dashboard Iowa State University Soil Temperatures Iowa DNR State Beach Water Quality Daily High Temperature Map Daily Low Temperature Map Daily Precipitation Map Daily Snowfall Map Daily Snow Depth Map

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 Sioux Falls Weather Forecast Office 26 Weather Lane Sioux Falls, SD 57104-0198 (605) 330-4247 Ask Questions/Webmaster Page last modified: 2-Nov-2020 7:29 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities