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Experimental National Water Center Products: The National Hydrologic Discussion, Area Hydrologic Discussion, and Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via https://www.weather.gov/owp/operations, as described in the StoryMap here.

Weather Forecast Office Milwaukee/Sullivan, WI

North Central 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 (CDT) Datum: NAVD88 Metadata

NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time. Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions NOTE: Forecasts for the Pecatonica River at Martintown 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: 21 Moderate Flood Stage: 18 Flood Stage: 13.5 Action Stage: 9.5 Low Stage (in feet): -9999 Historic Crests (1) 22.41 ft on 03/16/2019 (2) 21.46 ft on 07/01/1969 (3) 20.98 ft on 07/01/1990 (4) 20.80 ft on 03/27/1916 (5) 20.57 ft on 03/24/1975 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 11.66 ft on 03/12/2021 (2) 18.83 ft on 10/07/2019 (3) 22.41 ft on 03/16/2019 (4) 13.52 ft on 02/08/2019 (P) (5) 18.78 ft on 10/08/2018 (P) Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records (1) 2.10 ft on 12/14/1939 (2) 3.65 ft on 09/12/2003 (3) 3.72 ft on 09/15/2005 (4) 4.20 ft on 07/16/2012 (5) 4.57 ft on 08/28/2015 Show More Low Water Records 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

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24.14	Some homes in the Martintown area have floodwaters in their first floors sustaining major damage. Martintown Road and West River Road are flooded. Upstream in Browntown, hwy 11, Highway MM and West Indies Road are flooded. Highway 73 is flooded about 1 mile downstream in Winslow Illinois. This level is the 1 percent flood meaning that there is a 1 percent chance of the river reaching this level in any given year.
23.27	Some homes in the Martintown area have floodwaters in their first floors sustaining major damage. Martintown Road and West River Road in Martintown are flooded. Upstream in Browntown, hwy 11, Highway MM and West Indies Road are flooded. Highway 73 downstream in Winslow Illinois is flooded. This level is the 2 percent flood meaning there is a 2 percent chance of the river reaching this level in any given year.
22.34	Some homes in the Martintown area have floodwaters in their basements and first floors sustaining major damage. Martintown Road and West River Road in Martintown are flooded. Upstream in Browntown, Hwy 11, Highway MM and West Indies Road are flooded. Highway 73 about 1 mile downstream in Winslow Illinois is flooded. This level is the 4 percent flood meaning there is a 4 percent chance of the river reaching this level in any given year.
20.96	Some homes in the Martintown area have floodwaters in their basements and first floors. Martintown Road and West River Road in the Martintown area are flooded. Hwy 11, Highway MM and West Indies Road upstream in Browntown are flooded. Highway 73 about 1 mile downstream in Winslow Illinois is flooded. This level is the 10 percent chance flood meaning there is a 10 percent chance of the river reaching this level in any given year.
19.44	Some homes in Martintown area have floodwaters in their basements and first floors, Highways MM and West Indies Road upstream in the Browntown area are flooded. Martintown Road and West River Road in Martintown are flooded as is Highway 73 about 1 mile downstream in Winslow Illinois. This level is the 20 percent chance flood meaning there is a 20 percent chance of the river reaching this level in any given year.
18.45	Some homes in the Martintown area have floodwaters in their basements and first floors. Martintown Road and West River Road are flooded. Upstream in Browntown, Highway MM and West Indies Road are flooded. About 1 mile downstream in Winslow, Illinois, Highway 73 is flooded.
18	Floodwaters are in the basements of some homes in the Martintown area. Martintown Road and West River Road are flooded. Upstream in Browntown, Highway MM and West Indies Road are flooded. About 1 mile downstream in Winslow, Illinois, Highway 73 is flooded.
17.5	Floodwaters are in the back years of some homes in the Martintown area. Martintown Road and West River Road are flooded. Upstream in Browntown, Highway MM and West Indies Road are flooded. About 1 mile downstream in Winslow Illinois, Highway 73 is flooded.
16.56	Floodwaters are in the back yards of some homes in Martintown. Floodwaters affect Martintown Road and West River Road in the Martintown area. Upstream in Browntown, floodwaters affect Highway MM and West Indies Road. This level is the 50 percent chance flood meaning that there is a 50 percent chance of the river reaching this level in any given year.
16	Floodwaters are in the back yard of at least one home in Martintown. Floodwaters affect Martintown Road and West River Road in the Martintown area. Upstream in Browntown, floodwaters affect Highway MM and West Indies Road.
13.5	Floodwaters affect Martintown Road and West River Road in the Martintown area. Upstream in Browntown, floodwaters affect highway MM and West Indies Road.
13	Tillable farmland is flooded.
11	There is minor lowland flooding.
9.5	There is minor lowland flooding.
Photos (1) Minor flooding in Martintown area (2) Minor flooding in Martintown area

About This Location

Latitude: 42.510556° N, Longitude: 89.801111° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 13.5 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 757.49 ft 771.49 ft Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps NGVD 29 757.83 ft 771.33 ft 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 Martintown

Additional Information

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Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Inundation Mapping Locations

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Long Term Palmer Drought Severity Index Snow Information USGS WI Water Science High Water Mark Signs Levee Safety Information June 2008 National Flood Assessment How to Estimate River Ice Thickness Flood Resiliency at Wastewater Plants Manure Management Advisory System Historic Flooding Events For Southern Wisconsin Ice Jam Potential-4 sites in SE Wis.

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