Wb Susquehanna River at Williamsport, PA
USGS Site No: 01551500 • Susquehanna River • Lycoming County, PA
Wb Susquehanna River at Williamsport, PA on the Susquehanna River is currently at 13,900 cfs (High — 90th percentile for this date) . Gage height: 5.47 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 | 2,360 | |
| 25th | Low threshold | 3,360 | |
| 50th (Median) | Normal (median) | 5,230 | |
| 75th | High threshold | 8,380 | |
| 95th | Very High threshold | 15,700 | Today: 13,900 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 | 19,200 | — |
| May 27, 2026 | 25,600 | — |
| May 26, 2026 | 26,600 | — |
| May 25, 2026 | 14,500 | — |
| May 24, 2026 | 10,800 | — |
| May 23, 2026 | 6,460 | — |
| May 22, 2026 | 5,750 | — |
| May 21, 2026 | 6,200 | — |
| May 20, 2026 | 6,650 | — |
| May 19, 2026 | 7,350 | — |
| May 18, 2026 | 8,170 | — |
| May 17, 2026 | 8,910 | — |
| May 16, 2026 | 9,840 | — |
| May 15, 2026 | 10,900 | — |
| Apr 21, 2026 | 17,700 | — |
| Apr 20, 2026 | 18,600 | — |
| Apr 19, 2026 | 15,000 | — |
| Apr 18, 2026 | 14,400 | — |
| Apr 17, 2026 | 14,100 | — |
| Apr 16, 2026 | 11,100 | — |
| Apr 15, 2026 | 10,100 | — |
| Apr 14, 2026 | 10,200 | — |
| Apr 13, 2026 | 11,100 | — |
| Apr 12, 2026 | 12,700 | — |
| Apr 11, 2026 | 14,300 | — |
| Apr 10, 2026 | 16,400 | — |
| Apr 9, 2026 | 19,700 | — |
| Apr 8, 2026 | 24,600 | — |
| Apr 7, 2026 | 31,600 | — |
| Apr 6, 2026 | 36,100 | — |
Station Information
- USGS Site No
- 01551500
- State
- PA
- County
- Lycoming County
- Coordinates
- 41.2361, -76.9966
- Drainage Area
- 5,682 mi²
- Datum (ft)
- 494.3
- HUC Code
- 02050206
Flood Stage Thresholds
- Action Stage
- 10.0 ft
- Flood Stage
- 20.0 ft
- Moderate Flood
- 21.0 ft
- Major Flood
- 30.0 ft
Currently 14.53 ft below flood stage.
Recent Extremes
- Max discharge
-
52,100 cfsMay 7, 2025
- Min discharge
-
717 cfsSep 21, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Loyalsock Creek at Loyalsockville, PAHigh7.5 mi · 512 cfs
-
West Branch Susquehanna River at Allenwood, PAVery High10.4 mi · 15,800 cfs
-
Lycoming Creek Near Trout Run, PAHigh12.7 mi · 248 cfs
-
Wb Susquehanna River at Jersey Shore, PAVery High13.4 mi · 12,900 cfs
-
Pine Creek below L Pine Creek Near Waterville, PAHigh17.2 mi · 1,910 cfs