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Hydrograph River at a Glance Download
Wisconsin River below Grandfather Dam Tailwater (ft)Flow (kcfs)Observed: 1301.55 ft at 1:10PM Dec 03, 2021Observed: 1301.54 ft at 2:10PM Dec 03, 2021Observed: 1301.54 ft at 3:10PM Dec 03, 2021Observed: 1301.55 ft at 4:10PM Dec 03, 2021Observed: 1301.55 ft at 5:10PM Dec 03, 2021Observed: 1301.54 ft at 6:10PM Dec 03, 2021Observed: 1301.55 ft at 7:10PM Dec 03, 2021Observed: 1301.54 ft at 8:10PM Dec 03, 2021Observed: 1301.54 ft at 9:10PM Dec 03, 2021Observed: 1301.55 ft at 10:10PM Dec 03, 2021Observed: 1301.54 ft at 11:10PM Dec 03, 2021Observed: 1301.55 ft at 12:10AM Dec 04, 2021Observed: 1301.55 ft at 1:10AM Dec 04, 2021Observed: 1301.55 ft at 2:10AM Dec 04, 2021Observed: 1301.55 ft at 3:10AM Dec 04, 2021Observed: 1301.54 ft at 4:10AM Dec 04, 2021Observed: 1301.55 ft at 5:10AM Dec 04, 2021Observed: 1301.55 ft at 6:10AM Dec 04, 2021Observed: 1301.55 ft at 7:10AM Dec 04, 2021Observed: 1301.55 ft at 8:10AM Dec 04, 2021Observed: 1301.55 ft at 9:10AM Dec 04, 2021Observed: 1301.53 ft at 10:10AM Dec 04, 2021Observed: 1301.55 ft at 11:10AM Dec 04, 2021Observed: 1301.34 ft at 12:10PM Dec 04, 2021Observed: 1301.37 ft at 1:10PM Dec 04, 2021Observed: 1301.38 ft at 2:10PM Dec 04, 2021Observed: 1301.37 ft at 3:10PM Dec 04, 2021Observed: 1301.37 ft at 4:10PM Dec 04, 2021Observed: 1301.38 ft at 5:10PM Dec 04, 2021Observed: 1301.36 ft at 6:10PM Dec 04, 2021Observed: 1301.38 ft at 7:10PM Dec 04, 2021Observed: 1301.38 ft at 8:10PM Dec 04, 2021Observed: 1301.36 ft at 9:10PM Dec 04, 2021Observed: 1301.38 ft at 10:10PM Dec 04, 2021Observed: 1301.37 ft at 11:10PM Dec 04, 2021Observed: 1301.47 ft at 12:10AM Dec 05, 2021Observed: 1301.49 ft at 1:10AM Dec 05, 2021Observed: 1301.48 ft at 2:10AM Dec 05, 2021Observed: 1301.49 ft at 3:10AM Dec 05, 2021Observed: 1301.49 ft at 4:10AM Dec 05, 2021Observed: 1301.51 ft at 5:10AM Dec 05, 2021Observed: 1301.48 ft at 6:10AM Dec 05, 2021Observed: 1301.49 ft at 7:10AM Dec 05, 2021Observed: 1301.5 ft at 8:10AM Dec 05, 2021Observed: 1301.5 ft at 9:10AM Dec 05, 2021Observed: 1301.49 ft at 10:10AM Dec 05, 2021Observed: 1301.5 ft at 11:10AM Dec 05, 2021Observed: 1301.49 ft at 12:10PM Dec 05, 2021Observed: 1301.5 ft at 1:10PM Dec 05, 2021Observed: 1301.49 ft at 2:10PM Dec 05, 2021Observed: 1301.49 ft at 3:10PM Dec 05, 2021Observed: 1301.44 ft at 4:10PM Dec 05, 2021Observed: 1301.44 ft at 5:10PM Dec 05, 2021Observed: 1301.45 ft at 6:10PM Dec 05, 2021Observed: 1301.56 ft at 7:10PM Dec 05, 2021Observed: 1301.56 ft at 8:10PM Dec 05, 2021Observed: 1301.64 ft at 9:10PM Dec 05, 2021Observed: 1301.65 ft at 10:10PM Dec 05, 2021Observed: 1301.63 ft at 11:10PM Dec 05, 2021Observed: 1301.64 ft at 12:10AM Dec 06, 2021Observed: 1301.63 ft at 1:10AM Dec 06, 2021Observed: 1301.72 ft at 2:10AM Dec 06, 2021Observed: 1301.69 ft at 3:10AM Dec 06, 2021Observed: 1301.71 ft at 4:10AM Dec 06, 2021Observed: 1301.73 ft at 5:10AM Dec 06, 2021Observed: 1301.73 ft at 6:10AM Dec 06, 2021Observed: 1301.73 ft at 7:10AM Dec 06, 2021Observed: 1301.74 ft at 8:10AM Dec 06, 2021Highest Observation: 1301.75 ft at 9:10AM Dec 06, 2021Observed: 1301.73 ft at 10:10AM Dec 06, 2021Observed: 1301.74 ft at 1:10PM Dec 06, 2021Observed: 1301.74 ft at 2:10PM Dec 06, 2021Observed: 1301.65 ft at 3:10PM Dec 06, 2021Observed: 1301.67 ft at 4:10PM Dec 06, 2021Observed: 1301.62 ft at 5:10PM Dec 06, 2021Observed: 1301.56 ft at 6:10PM Dec 06, 2021Observed: 1301.52 ft at 7:10PM Dec 06, 2021Observed: 1301.41 ft at 8:10PM Dec 06, 2021Observed: 1301.42 ft at 9:10PM Dec 06, 2021Observed: 1301.32 ft at 10:10PM Dec 06, 2021Observed: 1301.32 ft at 11:10PM Dec 06, 2021Observed: 1301.26 ft at 12:10AM Dec 07, 2021Observed: 1301.27 ft at 1:10AM Dec 07, 2021Observed: 1301.27 ft at 2:10AM Dec 07, 2021Observed: 1301.27 ft at 3:10AM Dec 07, 2021Observed: 1301.27 ft at 4:10AM Dec 07, 2021Observed: 1301.29 ft at 5:10AM Dec 07, 2021Observed: 1301.31 ft at 6:10AM Dec 07, 2021Observed: 1301.36 ft at 7:10AM Dec 07, 2021Observed: 1301.35 ft at 8:10AM Dec 07, 2021Observed: 1301.36 ft at 9:10AM Dec 07, 2021Observed: 1301.35 ft at 10:10AM Dec 07, 2021Observed: 1301.38 ft at 11:10AM Dec 07, 2021Observed: 1301.37 ft at 12:10PM Dec 07, 2021Observed: 1301.38 ft at 1:10PM Dec 07, 2021Observed: 1301.39 ft at 2:10PM Dec 07, 2021Observed: 1301.45 ft at 3:10PM Dec 07, 2021Observed: 1301.45 ft at 4:10PM Dec 07, 2021Observed: 1301.43 ft at 5:10PM Dec 07, 2021Observed: 1301.44 ft at 6:10PM Dec 07, 2021Observed: 1301.42 ft at 7:10PM Dec 07, 2021Observed: 1301.42 ft at 8:10PM Dec 07, 2021Observed: 1301.44 ft at 9:10PM Dec 07, 2021Observed: 1301.43 ft at 10:10PM Dec 07, 2021Observed: 1301.44 ft at 11:10PM Dec 07, 2021Observed: 1301.43 ft at 12:10AM Dec 08, 2021Observed: 1301.43 ft at 1:10AM Dec 08, 2021Observed: 1301.42 ft at 2:10AM Dec 08, 2021Observed: 1301.42 ft at 3:10AM Dec 08, 2021Observed: 1301.43 ft at 4:10AM Dec 08, 2021Observed: 1301.44 ft at 5:10AM Dec 08, 2021Observed: 1301.44 ft at 6:10AM Dec 08, 2021Observed: 1301.44 ft at 7:10AM Dec 08, 2021Observed: 1301.44 ft at 8:10AM Dec 08, 2021Observed: 1301.44 ft at 9:10AM Dec 08, 2021Observed: 1301.44 ft at 10:10AM Dec 08, 2021Observed: 1301.42 ft at 12:10PM Dec 08, 2021GRFW3(plotting HTIRP) Graph Created (1:05PM Dec 8, 2021)ObservedLatest observed value: 1301.42 ft at 12:10 PM CST 8-Dec-2021. Flood Stage is 1308 ft
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About this graph
Tabular Data (UTC)
Tabular Data (CST)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Gauge reading affected by power generation.

NOTE: Stage may be affected by ice.

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

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Upstream Gauge - below Tomahawk Dam Upstream Gauge Downstream Gauge Downstream Gauge - below Alexander Dam
Flood Categories (in feet)
Major Flood Stage: 1314
Moderate Flood Stage: 1312
Flood Stage: 1308
Action Stage: 1306
Low Stage (in feet): 0

Historic Crests
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.
Zoom Level:16
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Gauge LocationGauge Map Marker
 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 Collapse
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1314 Several feet of water may be surrounding homes and cottages along the river...which includes areas near Gibson Drive...Mathers Road and River Road. Low-lying areas along Highway 107 will also be impacted.
1312 Up to a foot of water may be surrounding homes and cottages near Gibson Drive...Mathews Road and River Road. Some low-lying areas of Highway 107 may be impacted.
1308 Water may approach a few structures by Newwood River near Gibson Drive and Mathews Road.
1305 Low-lying flooding is occurring.
Photos
(1) Wisconsin River upstream of Grandfather dam
About This Location Collapse

Latitude: 45.313056° N, Longitude: 89.783889° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 1308 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  
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Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
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
National Weather Service
Green Bay Weather Forecast Office
2485 South Point Road
Green Bay, WI 54313
(920) 494-2363
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