Casselman River at Grantsville, MD

USGS Site No: 03078000 • Casselman River • Garrett County, MD

Casselman River at Grantsville, MD on the Casselman River is currently at 281 cfs (High — 94th percentile for this date) . Gage height: 2.07 ft.

Reading from

281
CFS Discharge
2.07
Gage Height (ft)
High
Flow Condition
N/A
Flood Status

Historical Percentile Comparison

Today's discharge compared to the long-term record for June 11 at this station. Percentile rank shows what fraction of historical years had lower flow on this date.

Percentile Label CFS Threshold Today's Flow
10th Very Low threshold 14
25th Low threshold 27
50th (Median) Normal (median) 48
75th High threshold 93
95th Very High threshold 296 Today: 281 cfs

30-Day Hydrograph

Recent discharge plotted against the historical 10th–95th percentile envelope for the same calendar days. Source: USGS daily values + long-term statistics.

1.4k 697 0 cfs Apr 6 May 28
10th–95th historical Day-of-year median Recent discharge

30-Day Flow History

Date Discharge (CFS) Gage Ht (ft)
May 28, 2026 680 —
May 27, 2026 1,290 —
May 26, 2026 427 —
May 25, 2026 1,140 —
May 24, 2026 347 —
May 23, 2026 565 —
May 22, 2026 114 —
May 21, 2026 64 —
May 20, 2026 34 —
May 19, 2026 31 —
May 18, 2026 33 —
May 17, 2026 38 —
May 16, 2026 41 —
May 15, 2026 51 —
Apr 21, 2026 56 —
Apr 20, 2026 68 —
Apr 19, 2026 78 —
Apr 18, 2026 57 —
Apr 17, 2026 71 —
Apr 16, 2026 58 —
Apr 15, 2026 65 —
Apr 14, 2026 66 —
Apr 13, 2026 72 —
Apr 12, 2026 79 —
Apr 11, 2026 89 —
Apr 10, 2026 94 —
Apr 9, 2026 105 —
Apr 8, 2026 117 —
Apr 7, 2026 137 —
Apr 6, 2026 170 —

Station Information

USGS Site No
03078000
State
MD
County
Garrett County
Coordinates
39.7022, -79.1364
Drainage Area
64 mi²
Datum (ft)
2,088.7
HUC Code
050200060402
View on USGS NWIS →

Recent Extremes

Max discharge
1,290 cfs
May 27, 2026
Min discharge
6 cfs
Sep 16, 2025

Computed from the local daily-values archive.

Nearby Gauges

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