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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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: 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: Gauge reading may be affected by ice. NOTE: Forecasts for the Vermillion River near Wakonda 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: 15.5 Flood Stage: 14 Action Stage: 13 Low Stage (in feet): -9999 Historic Crests (1) 18.11 ft on 03/15/2019 (2) 17.62 ft on 06/23/1984 (3) 17.60 ft on 03/17/2010 (4) 17.50 ft on 06/25/2018 (5) 17.38 ft on 03/20/2011 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 15.10 ft on 03/09/2020 (2) 18.11 ft on 03/15/2019 (3) 17.50 ft on 06/25/2018 (4) 12.64 ft on 05/01/2017 (5) 16.72 ft on 05/17/2016 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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19.5	Water reaches the bottom of the bridge on 461st Avenue near Lodi, and the highest levees will be overtopped.
19	The intersection of Highway 19 and 46 begins to flood. The bridge on 302nd Street 1 mile east of Colfax Corner is overtopped.
18.5	The bridge on highway 19 near Lodi, and the bridge on 461st Avenue northeast of Colfax Corner, are both overtopped.
18	Water reaches the bottom of the bridge on 303rd Street between Lodi and Colfax Corner.
17.5	The bridge on 304th Street west of Dalesburg is overtopped. Water reaches the bottom of the bridge on Highway 19 at the gauge location.
17	Highway 19 south of Centerville is flooded. Water reaches the bottom of the bridge on 302nd Street east of Colfax Corner, and many of the levees will start to be overtopped with approximately 25000 acres flooded between Davis and Vermillion.
16.5	Hwy 19 north of the gage location begins to flood. Water reaches the bottom of the bridge on 461st Avenue northeast of Colfax Corner, and major flooding of agricultural land south of Davis begins.
16	Water reaches the bottom of the bridge on 304th Street west of Dalesburg, Highway 19 near 299th Street begins to flood, 302nd Street near Colfax Corner will be flooded, and approximately 10000 acres could be flooded between Centerville and Vermillion.
15.5	Water reaches the bottom of the bridge on highway 19 near Lodi, and 306th Street near Hub City will flood along with several other county roads.
15	Highway 19 south of Centerville could start flooding if the levees fail.
14	Minor flooding of low lying areas begins in non-leveed areas and some agricultural land will flood if the levees fail.
Photos (1) Downstream View (6/13/2023) (2) Upstream View (6/13/2023)

About This Location

Latitude: 42.990278° N, Longitude: 96.963333° W, Horizontal Datum: NAD27 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 14 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 1150.90 1164.90 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 Wakonda

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 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

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