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Weather Forecast Office Sioux Falls, SD

Missouri Basin River Forecast Center

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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 (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: Gauge reading may be affected by ice. NOTE: Forecasts for the Ocheyedan River near Spencer are issued as needed during times of high water, but are not routinely available. Vertical Datum updated from NGVD29 to NAVD88 by gauge owner.

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Upstream Gauge

Flood Categories (in feet) Major Flood Stage: 10.5 Moderate Flood Stage: 9.5 Flood Stage: 8 Action Stage: 7 Low Stage (in feet): -9999 Historic Crests (1) 12.89 ft on 06/18/1953 (2) 12.73 ft on 03/15/2019 (3) 12.70 ft on 06/21/2018 (4) 11.72 ft on 08/11/2010 (5) 11.51 ft on 07/15/2011 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 8.57 ft on 05/27/2020 (2) 12.73 ft on 03/15/2019 (3) 12.70 ft on 06/21/2018 (4) 9.15 ft on 05/22/2017 (5) 9.73 ft on 05/01/2016 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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17.5	the bridge on County Road M38 at the gage is overtopped.
16.5	the bridge south of the Ocheyedan WMA is overtopped.
14.5	water reaches the bottom of the bridges south of the Ocheyedan WMA and on County Road M38, and the bridge north of the Ocheyedan WMA is overtopped.
12.5	water reaches the bottom of the bridge north of the Ocheyedan WMA.
10.5	major agricultural flooding begins and some county roads are also flooded.
9.5	significant amounts of pasture and other farm land begin flooding.
8	minor flooding of pasture land begins.
7	minor flooding of some ditches begins.
Photos (1) Upstream View (2) Downstream View

About This Location

Latitude: 43.128056° N, Longitude: 95.210556° W, Horizontal Datum: NAD27 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 8 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 1312.03 1320.03 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 Spencer

Additional Information

How low could the river get?

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

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