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Web Portal Changes: In Spring 2024, the Advanced Hydrologic Prediction Service (AHPS) hosted at will be replaced by the National Water Prediction Service (NWPS) at a repurposed A preview of NWPS is available here, where you can see your station hydrograph by replacing SSSSS with the station 5-character id:

Flood Inundation Mapping: Experimental real-time flood Inundation mapping services for 10% of the United States are now available via the NWS Map Viewer. Additional products and geospatial services depicting River Forecast Center and National Water Model forecasts continue to be accessible as described in the StoryMap here.

Please visit for more information.

Hydrograph River at a Glance Download
Wisconsin River below Biron Dam Tailwater (ft)Flow (kcfs)Observed: 1011.36 ft at 12:10AM Feb 25, 2024Observed: 1011.4 ft at 3:10AM Feb 25, 2024Observed: 1011.37 ft at 6:10AM Feb 25, 2024Observed: 1011.39 ft at 9:10AM Feb 25, 2024Observed: 1011.44 ft at 12:10PM Feb 25, 2024Observed: 1011.41 ft at 3:10PM Feb 25, 2024Observed: 1011.46 ft at 6:10PM Feb 25, 2024Observed: 1011.37 ft at 9:10PM Feb 25, 2024Observed: 1011.31 ft at 3:10AM Feb 26, 2024Observed: 1011.34 ft at 6:10AM Feb 26, 2024Observed: 1011.38 ft at 9:10AM Feb 26, 2024Observed: 1011.36 ft at 12:10PM Feb 26, 2024Observed: 1011.3 ft at 3:10PM Feb 26, 2024Observed: 1011.3 ft at 6:10PM Feb 26, 2024Observed: 1011.18 ft at 9:10PM Feb 26, 2024Observed: 1011.31 ft at 3:10AM Feb 27, 2024Observed: 1011.3 ft at 6:10AM Feb 27, 2024Observed: 1011.33 ft at 9:10AM Feb 27, 2024Observed: 1011.34 ft at 12:10PM Feb 27, 2024Observed: 1011.37 ft at 3:10PM Feb 27, 2024Observed: 1011.43 ft at 6:10PM Feb 27, 2024Observed: 1011.42 ft at 9:10PM Feb 27, 2024Observed: 1011.39 ft at 12:10AM Feb 28, 2024Observed: 1011.41 ft at 3:10AM Feb 28, 2024Observed: 1011.36 ft at 6:10AM Feb 28, 2024Observed: 1011.34 ft at 9:10AM Feb 28, 2024Observed: 1011.34 ft at 12:10PM Feb 28, 2024Observed: 1011.31 ft at 3:10PM Feb 28, 2024Observed: 1011.26 ft at 6:10PM Feb 28, 2024Observed: 1011.42 ft at 12:10AM Feb 29, 2024Observed: 1011.43 ft at 3:10AM Feb 29, 2024Observed: 1011.39 ft at 6:10AM Feb 29, 2024Observed: 1011.4 ft at 9:10AM Feb 29, 2024Observed: 1011.47 ft at 12:10PM Feb 29, 2024Highest Observation: 1011.49 ft at 3:10PM Feb 29, 2024Observed: 1011.38 ft at 6:10PM Feb 29, 2024Observed: 1011.48 ft at 9:10PM Feb 29, 2024BIRW3(plotting HTIRP) Graph Created (11:05PM Feb 29, 2024)ObservedLatest observed value: 1011.48 ft at 9:10 PM CST 29-Feb-2024. Flood Stage is 1017 ft
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Tabular Data (UTC)
Tabular Data (CST)
XML Data
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Datum: Not Available
NOTE: Gauge reading affected by power generation.

NOTE: Stage may be affected by ice.

NOTE: Forecasts are not available for the Wisconsin River below Biron Dam. Only observed stages are available for this point.

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Upstream Gauge - below Whiting Dam Upstream Gauge Downstream Gauge Downstream Gauge - below Wisconsin Rapids Dam
Flood Categories (in feet)
Major Flood Stage: 1022
Moderate Flood Stage: 1020
Flood Stage: 1017
Action Stage: 1015
Low Stage (in feet): 0

Historic Crests
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.

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Gauge LocationGauge Map Marker
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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1022 Several homes on South Biron Drive in Biron are surrounded by 4 feet of water. Highway 66 or County P is likely closed due to high water.
1020.5 Up to 2 feet of water surrounds some homes on South Biron Drive in Biron. Portions of Reddin Road are likely closed. Portions of Highway 66 or County Road P near the Stoney Brook Creek bridge are covered with water and may be closed.
1019 Widespread flooding in wooded lowland is occurring along the river. About a half-foot of water surrounds a few homes on South Biron Drive in Biron. Water may be over portions of Reddin Road. Water may also be approaching parts of Highway 66 or County Road P due to Stoney Brook Creek backing up.
1017 Widespread wooded lowland flooding. Water approaches a few homes on South Biron Drive in Biron.
1015 Wooded lowland flooding is occurring. There is minor shoreline flooding of some homes on South Biron Drive in Biron.
(1) Biron crest 1020.73 feet on South Biron Drive
(2) Biron dam and dike upstream on the Wisconsin River
About This Location Collapse

Latitude: 44.433611° N, Longitude: 89.781944° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 1017 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(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  
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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
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Green Bay Weather Forecast Office
2485 South Point Road
Green Bay, WI 54313
(920) 494-2363
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