TornadoLiveMap

Wisconsin River below Grandfather Dam — water level right now

Lincoln County, Wisconsin · NWS gauge GRFW3
Loading the latest reading…
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current stage (ft)
 
1308
minor flood stage
 
–
flood status
official NWS category
Official NOAA forecast → Full US flood map →

Flood stages at this gauge

Where the water stands right now against the four official thresholds:

action · 1306
minor · 1308
moderate · 1312
major · 1314
Flood stageLevel (ft)What it means
Major flood stage1314extensive inundation and significant evacuations — a serious event
Moderate flood stage1312some buildings and roads inundated; evacuations possible
Minor flood stage1308low-lying roads and fields near the river start to flood
Action stage1306water is approaching flood level — time to pay attention

Highest floods on record here

The National Weather Service has no historic crest list on file for this gauge.

Where this gauge is

The marker is this gauge; nearby gauges load live and are clickable.

Nearby river gauges

Prairie River near Merrill 8 mi away · loading… Spirit River at Spirit Reservoir 9 mi away · loading… Wisconsin River below Alexander Dam 9 mi away · loading… Wisconsin River below Tomahawk Dam 9 mi away · loading… Wisconsin River at Merrill 11 mi away · loading… Spirit River near Spirit Falls 13 mi away · loading…

Gauge details

NWS gauge IDGRFW3
CountyLincoln
StateWisconsin
NWS forecast officeGreen Bay
River forecast centerNorth Central River Forecast Center
Coordinates45.313, -89.784
Time zoneCST6CDT
Turn Around, Don't Drown. Six inches of moving water can knock you off your feet and twelve inches can float a car. Never drive around barricades or into water of unknown depth — most flood deaths happen in vehicles.

Questions about Wisconsin River below Grandfather Dam

Is Wisconsin River below Grandfather Dam flooding right now?

The live reading at the top of this page answers that: the gauge is compared against its official NWS flood stages every 15 minutes. Minor flooding at this gauge begins at 1308 ft. Blue means normal, yellow is action stage, orange minor, red moderate and dark red major flooding.

What is flood stage for Wisconsin River below Grandfather Dam?

major flood stage 1314 ft, moderate flood stage 1312 ft, minor flood stage 1308 ft, action stage 1306 ft. These are official National Weather Service thresholds set specifically for this gauge, not generic values.

Where does this data come from?

From the NOAA National Water Prediction Service, the official U.S. river gauge network — a U.S. government work in the public domain. Live stage is refreshed every 15 minutes; flood thresholds and historic crests are refreshed monthly. For life-safety decisions follow NWS Green Bay and local emergency management.