RIVER GAUGE · CASSELMAN RIVER
Casselman River at Grantsville
Garrett County, Maryland
Water level1.15 ft
Flow46 cfs
Last readingSep 16, 2026, 4:30 PM UTC (last recorded)
Action3.5 ft
Minor flood4.5 ft
Moderate flood6 ft
The past week
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What floods at each level
- 6 ft
Flooding of structures begins along the Casselman River near Maple Grove Road.
- 5 ft
Maple Grove Road along with parts of Bittinger Road are likely covered with more than a foot of water at this level.
- 4.5 ft
Maple Grove Road near the Casselman river is likely covered with around a half foot of flowing water. Parts of Bittinger Road are likely closed at this level.
- 4 ft
Water starts to flow over Maple Grove Road near Casselman River. Water also starts to cover parts of Bittinger Road.
- 3.5 ft
Water from the Casselman River is likely covering low lying fields around the river.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Oct 14, 1954 | 10.7 ft | 8,400 cfs |
| Jan 18, 1996 | 9.15 ft | 6,410 cfs |
| Jul 3, 1948 | 8.13 ft | 5,110 cfs |
More on Casselman River
DownstreamCasselman River at Markleton
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