ALERT: November 15 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 Sioux Falls, SD

Missouri Basin River Forecast Center

Dense Fog Advisory

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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NOTE: Gauge reading may be affected by ice. 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 Little Sioux River at Spencer 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: 16 Moderate Flood Stage: 14 Flood Stage: 10 Action Stage: 9 Low Stage (in feet): -9999 Historic Crests (1) 20.20 ft on 06/08/1953 (2) 17.60 ft on 06/21/1954 (3) 17.37 ft on 04/06/1965 (4) 17.00 ft on 07/01/1993 (5) 16.50 ft on 04/01/1951 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 12.20 ft on 05/23/2017 (2) 11.47 ft on 02/22/2016 (3) 15.18 ft on 06/20/2014 (4) 12.10 ft on 06/28/2013 (5) 11.90 ft on 05/31/2012 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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21	The levees in Spencer are overtopped, and Park Street and Grand Avenue in Spencer are flooded.
19.5	Flooding begins to affect the Breezy Meadows Addition in Spencer, and most of the city south of the river is flooded.
18	The Spencer Golf and Country Club begins flooding.
16.5	Highway 71 and Highway 18 begin to flood, and West Park Street, 1st Street, and 2nd Street in Spencer are flooded. Some homes and businesses in the southern portions of Spencer are also flooded.
16	Highway 18 near Hawk Valley WMA east of Spencer beings flooding.
14.5	County Road B40 southeast of Spencer begins flooding.
14	City sewers in Spencer can begin to back up. Highway 18 between Spencer and Dickens can start flooding if flows on the tributary creeks are also very high.
10	The right bank overflows, and minor flooding of the Spencer city park and some rural agricultural areas begins.
9.5	The lower left bank overflows and very minor flooding of low lands begins.
Photos (1) Upstream View (2) Downstream View

About This Location

Latitude: 43.136667° N, Longitude: 95.143889° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 10 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 1294.56 ft 1304.56 ft Older USGS topographic maps, NGVD29 benchmarks MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks Other Not Available Not Available

Additional Information

How low could the river get?

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary 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 FEMA Region VIII Flood Information Big Sioux Flood Information System Iowa Flood Center Minnesota DNR ___

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 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 Report on July 29-30, 2010 heavy rain/flood event in Jerauld County

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: 21-Dec-2016 10:37 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities