West Branch Susquehanna River at Allenwood, PA
USGS Site No: 01553025 • Susquehanna River • Union County, PA
West Branch Susquehanna River at Allenwood, PA on the Susquehanna River is currently at 15,800 cfs (Very High — 95th percentile for this date) . Gage height: 11.12 ft.
Reading from
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 | 1,840 | |
| 25th | Low threshold | 4,940 | |
| 50th (Median) | Normal (median) | 6,600 | |
| 75th | High threshold | 8,850 | |
| 95th | Very High threshold | 0 |
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 | 21,100 | — |
| May 27, 2026 | 27,400 | — |
| May 26, 2026 | 25,600 | — |
| May 25, 2026 | 15,500 | — |
| May 24, 2026 | 12,400 | — |
| May 23, 2026 | 7,260 | — |
| May 22, 2026 | 6,800 | — |
| May 21, 2026 | 7,330 | — |
| May 20, 2026 | 7,820 | — |
| May 19, 2026 | 8,700 | — |
| May 18, 2026 | 9,620 | — |
| May 17, 2026 | 10,500 | — |
| May 16, 2026 | 11,700 | — |
| May 15, 2026 | 13,100 | — |
| Apr 21, 2026 | 19,600 | — |
| Apr 20, 2026 | 20,200 | — |
| Apr 19, 2026 | 16,100 | — |
| Apr 18, 2026 | 15,600 | — |
| Apr 17, 2026 | 14,900 | — |
| Apr 16, 2026 | 12,300 | — |
| Apr 15, 2026 | 11,600 | — |
| Apr 14, 2026 | 11,700 | — |
| Apr 13, 2026 | 13,100 | — |
| Apr 12, 2026 | 14,600 | — |
| Apr 11, 2026 | 16,500 | — |
| Apr 10, 2026 | 18,400 | — |
| Apr 9, 2026 | 21,900 | — |
| Apr 8, 2026 | 27,200 | — |
| Apr 7, 2026 | 33,900 | — |
| Apr 6, 2026 | 37,400 | — |
Station Information
- USGS Site No
- 01553025
- State
- PA
- County
- Union County
- Coordinates
- 41.1081, -76.8900
- Drainage Area
- 6,496 mi²
- Datum (ft)
- 441.2
- HUC Code
- 02050206
Flood Stage Thresholds
- Action Stage
- 20.0 ft
- Flood Stage
- 24.0 ft
- Moderate Flood
- 26.0 ft
- Major Flood
- 30.0 ft
Currently 12.88 ft below flood stage.
Recent Extremes
- Max discharge
-
55,900 cfsMay 7, 2025
- Min discharge
-
656 cfsSep 22, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
West Branch Susquehanna River at Lewisburg, PAHigh9.7 mi · 16,100 cfs
-
Chillisquaque Creek Near Potts Grove, PANormal10.4 mi · 80 cfs
-
Wb Susquehanna River at Williamsport, PAHigh10.4 mi · 13,900 cfs
-
Chillisquaque Creek at Washingtonville, PANormal11.4 mi · 29 cfs
-
Loyalsock Creek at Loyalsockville, PAHigh15.0 mi · 512 cfs