Casselman River at Markleton, PA
USGS Site No: 03079000 • Casselman River • Somerset County, PA
Casselman River at Markleton, PA on the Casselman River is currently at 1,540 cfs (Very High — 100th percentile for this date) . Gage height: 3.33 ft.
Reading from
Historical Percentile Comparison
Today's discharge compared to the long-term record for October 28 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 | 36 | |
| 25th | Low threshold | 70 | |
| 50th (Median) | Normal (median) | 131 | |
| 75th | High threshold | 332 | |
| 95th | Very High threshold | 1,020 |
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.
30-Day Flow History
| Date | Discharge (CFS) | Gage Ht (ft) |
|---|---|---|
| May 28, 2026 | 3,440 | — |
| May 27, 2026 | 4,300 | — |
| May 26, 2026 | 2,330 | — |
| May 25, 2026 | 4,450 | — |
| May 24, 2026 | 2,090 | — |
| May 23, 2026 | 3,740 | — |
| May 22, 2026 | 789 | — |
| May 21, 2026 | 686 | — |
| May 20, 2026 | 328 | — |
| May 19, 2026 | 159 | — |
| May 18, 2026 | 158 | — |
| May 17, 2026 | 173 | — |
| May 16, 2026 | 190 | — |
| May 15, 2026 | 212 | — |
| Apr 21, 2026 | 385 | — |
| Apr 20, 2026 | 462 | — |
| Apr 19, 2026 | 508 | — |
| Apr 18, 2026 | 402 | — |
| Apr 17, 2026 | 486 | — |
| Apr 16, 2026 | 389 | — |
| Apr 15, 2026 | 481 | — |
| Apr 14, 2026 | 393 | — |
| Apr 13, 2026 | 410 | — |
| Apr 12, 2026 | 452 | — |
| Apr 11, 2026 | 506 | — |
| Apr 10, 2026 | 540 | — |
| Apr 9, 2026 | 604 | — |
| Apr 8, 2026 | 690 | — |
| Apr 7, 2026 | 830 | — |
| Apr 6, 2026 | 1,050 | — |
Station Information
- USGS Site No
- 03079000
- State
- PA
- County
- Somerset County
- Coordinates
- 39.8599, -79.2288
- Drainage Area
- 382 mi²
- Datum (ft)
- 1,654.8
- HUC Code
- 05020006
Flood Stage Thresholds
- Action Stage
- 9.0 ft
- Flood Stage
- 9.0 ft
Currently 5.67 ft below flood stage.
Recent Extremes
- Max discharge
-
12,400 cfsMay 14, 2025
- Min discharge
-
37 cfsSep 17, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Laurel Hill Creek at Ursina, PAHigh5.6 mi · 532 cfs
-
Youghiogheny River Below Confluence, PAVery High7.9 mi · 6,640 cfs
-
Youghiogheny River at Youghiogheny River Dam, PAVery High8.1 mi · 4,250 cfs
-
Casselman River at Grantsville, MDVery High12.0 mi · 281 cfs
-
Youghiogheny River at Ohiopyle, PAVery High14.1 mi · 6,850 cfs