TornadoLiveMap

Missouri River at Canyon Ferry Reservoir — water level right now

Lewis and Clark County, Montana · NWS gauge CYNM8
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current stage (ft)
 
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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 · 3800
Flood stageLevel (ft)What it means
Action stage3800water 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

Missouri River at Helena Valley Reservoir 7 mi away · loading… Tenmile Creek (MT) near Helena 17 mi away · loading… Missouri River at Toston 38 mi away · loading… Dearborn River near Craig 42 mi away · loading… Clark Fork River at Deer Lodge 51 mi away · loading… Jefferson River near Three Forks 52 mi away · loading…

Gauge details

NWS gauge IDCYNM8
CountyLewis and Clark
StateMontana
NWS forecast officeGreat Falls
River forecast centerMissouri Basin River Forecast Center
Coordinates46.649, -111.727
Time zoneMST7MDT
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 Missouri River at Canyon Ferry Reservoir

Is Missouri River at Canyon Ferry Reservoir 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. Blue means normal, yellow is action stage, orange minor, red moderate and dark red major flooding.

What is flood stage for Missouri River at Canyon Ferry Reservoir?

action stage 3800 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 Great Falls and local emergency management.