TornadoLiveMap

St Clair River at Algonac — water level right now

St. Clair County, Michigan · NWS gauge AGCM4
Loading the latest reading…
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current stage (ft)
 
578.02
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 · 577.33
minor · 578.02
major · 578.22
Flood stageLevel (ft)What it means
Major flood stage578.22extensive inundation and significant evacuations — a serious event
Minor flood stage578.02low-lying roads and fields near the river start to flood
Action stage577.33water 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

St Clair River at St Clair State Police Tidal Gage 14 mi away · loading… N. Br. Clinton River near Mount Clemens 18 mi away · loading… Clinton River at Mount Clemens 19 mi away · loading… Lake St Clair at St Clair Shores Tidal Gauge 20 mi away · loading… Clinton River near Clinton Township 21 mi away · loading… Detroit River at Windmill Pointe Tidal Gauge 26 mi away · loading…

Gauge details

NWS gauge IDAGCM4
CountySt. Clair
StateMichigan
NWS forecast officeWhite Lake
River forecast centerNorth Central River Forecast Center
Coordinates42.616, -82.544
Time zoneEST5EDT
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 St Clair River at Algonac

Is St Clair River at Algonac 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 578.02 ft. Blue means normal, yellow is action stage, orange minor, red moderate and dark red major flooding.

What is flood stage for St Clair River at Algonac?

major flood stage 578.22 ft, minor flood stage 578.02 ft, action stage 577.33 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 White Lake and local emergency management.