TornadoLiveMap

Casselman River at Grantsville — water level right now

Garrett County, Maryland · NWS gauge GNTM2
Loading the latest reading…
–
current stage (ft)
 
4.5
minor flood stage
 
10.7
record crest
set 1954-10-15
–
flood status
official NWS category
Official NOAA forecast → USGS data → Full US flood map →

Flood stages at this gauge

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

action · 3.5
minor · 4.5
moderate · 6
Flood stageLevel (ft)What it means
Moderate flood stage6some buildings and roads inundated; evacuations possible
Minor flood stage4.5low-lying roads and fields near the river start to flood
Action stage3.5water is approaching flood level — time to pay attention

Highest floods on record here

#Crest (ft)Datevs. minor flood stage
110.71954-10-15+6.2 above
29.151996-01-19+4.65 above
38.131948-07-04+3.63 above
47.292021-09-01+2.79 above
57.12018-09-09+2.6 above
67.041985-11-05+2.54 above

Historic crests recorded at this gauge by the National Weather Service — the 12 highest on file.

Where this gauge is

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

Nearby river gauges

Savage River near Bloomington 14 mi away · loading… Georges Creek near Franklin/Westernport 15 mi away · loading… North Branch Potomac River at Luke 16 mi away · loading… Wills Creek near Cumberland 19 mi away · loading… North Branch Potomac River at Cumberland 20 mi away · loading… North Branch Potomac River at Kitzmiller 21 mi away · loading…

Gauge details

NWS gauge IDGNTM2
USGS site03078000
CountyGarrett
StateMaryland
NWS forecast officeSterling
River forecast centerOhio River Forecast Center
Coordinates39.702, -79.136
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 Casselman River at Grantsville

Is Casselman River at Grantsville 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 4.5 ft. Blue means normal, yellow is action stage, orange minor, red moderate and dark red major flooding.

What is flood stage for Casselman River at Grantsville?

moderate flood stage 6 ft, minor flood stage 4.5 ft, action stage 3.5 ft. These are official National Weather Service thresholds set specifically for this gauge, not generic values.

What is the record flood at Casselman River at Grantsville?

The highest crest on file at this gauge is 10.7 ft, reached on 1954-10-15 — that is 6.2 ft above minor flood stage. The full list of the highest crests is in the table on this page.

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 Sterling and local emergency management.