West Branch Susquehanna River at Lewisburg, PA
USGS Site No: 01553500 • Susquehanna River • Northumberland County, PA
West Branch Susquehanna River at Lewisburg, PA on the Susquehanna River is currently at 16,100 cfs (High — 86th percentile for this date) . Gage height: 5.95 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 | 1,100 | |
| 25th | Low threshold | 1,780 | |
| 50th (Median) | Normal (median) | 3,300 | |
| 75th | High threshold | 8,440 | |
| 95th | Very High threshold | 22,200 | Today: 16,100 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.
30-Day Flow History
| Date | Discharge (CFS) | Gage Ht (ft) |
|---|---|---|
| May 28, 2026 | 22,400 | — |
| May 27, 2026 | 29,200 | — |
| May 26, 2026 | 25,100 | — |
| May 25, 2026 | 15,200 | — |
| May 24, 2026 | 11,700 | — |
| May 23, 2026 | 7,160 | — |
| May 22, 2026 | 6,670 | — |
| May 21, 2026 | 7,090 | — |
| May 20, 2026 | 7,810 | — |
| May 19, 2026 | 8,630 | — |
| May 18, 2026 | 9,490 | — |
| May 17, 2026 | 10,400 | — |
| May 16, 2026 | 11,200 | — |
| May 15, 2026 | 12,400 | — |
| Apr 21, 2026 | 20,700 | — |
| Apr 20, 2026 | 20,600 | — |
| Apr 19, 2026 | 16,400 | — |
| Apr 18, 2026 | 16,400 | — |
| Apr 17, 2026 | 14,800 | — |
| Apr 16, 2026 | 12,600 | — |
| Apr 15, 2026 | 12,100 | — |
| Apr 14, 2026 | 12,500 | — |
| Apr 13, 2026 | 13,900 | — |
| Apr 12, 2026 | 15,600 | — |
| Apr 11, 2026 | 17,600 | — |
| Apr 10, 2026 | 20,100 | — |
| Apr 9, 2026 | 24,300 | — |
| Apr 8, 2026 | 30,400 | — |
| Apr 7, 2026 | 37,300 | — |
| Apr 6, 2026 | 39,700 | — |
Station Information
- USGS Site No
- 01553500
- State
- PA
- County
- Northumberland County
- Coordinates
- 40.9675, -76.8763
- Drainage Area
- 6,847 mi²
- Datum (ft)
- 427.5
- HUC Code
- 02050206
Flood Stage Thresholds
- Action Stage
- 14.0 ft
- Flood Stage
- 18.0 ft
- Moderate Flood
- 23.0 ft
- Major Flood
- 28.0 ft
Currently 12.05 ft below flood stage.
Recent Extremes
- Max discharge
-
57,100 cfsMay 7, 2025
- Min discharge
-
889 cfsSep 22, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Chillisquaque Creek Near Potts Grove, PAVery High4.0 mi · 80 cfs
-
Susquehanna River at Sunbury, PAHigh9.5 mi · 34,600 cfs
-
West Branch Susquehanna River at Allenwood, PAVery High9.7 mi · 15,800 cfs
-
Penns Creek at Penns Creek, PAHigh11.4 mi · 422 cfs
-
Chillisquaque Creek at Washingtonville, PANormal12.1 mi · 29 cfs