National Weather Service Advanced Hydrologic Prediction Service

Visit https://www.weather.gov/owp/operations for access to new EXPERIMENTAL products and services from the National Water Center: National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook and the National Water Center Visualization Services, a suite of geospatial services depicting River Forecast Center and National Water Model information.

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NOTE: No forecasts are available for this location NOTE: Graphical forecasts are not available for the East Okoboji Lake at Spirit Lake. During times of high water, forecast crest information can be found in the text products.

Default HydrographScale to Flood Categories

Flood Categories (in feet) Major Flood Stage: 21 Moderate Flood Stage: 18 Flood Stage: 16 Action Stage: 15 Low Stage (in feet): 0 Historic Crests (1) 13.44 ft on 05/17/2018 (P): Preliminary values subject to further review. Recent Crests (1) 13.44 ft on 05/17/2018 (P): Preliminary values subject to further review. Low Water Records Currently none available.

Legend 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.

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21	Homes and businesses along the lake shore will begin flooding.
18	Boat ramps and parking lots will be flooded, and water will reach into the yards of home along the lake shore.
16	Some of the boat docks will be flooded.

Latitude: 43.426400° N, Longitude: 95.093100° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 16 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 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:

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.