WB Susquehanna River at Williamsport, PA
USGS 01551500 · Pennsylvania · reports discharge (live), gauge height
Reading WB Susquehanna River at Williamsport, PA…
Back to the search
USGS 01551500 · Pennsylvania · reports discharge (live), gauge height
What the agencies suggest
Carry a pocket thermometer to monitor water temperatureNational Park Service
General guidance from the readings and the published lines named above, not a fishing forecast. Local rules and closures come first.
Reading Nov 5, 7:15 PM EST · provisional USGS data
Normal for Nov 5 Steady · 24 h Below NWS action stage
Discharge, last 7 days: 169 readings from Oct 29, 8:30 PM EDT to Nov 5, 7:15 PM EST; ranging 1,890 to 2,250 ft³/s; latest 2,080 ft³/s; shaded band: typical range (25th–75th percentile) for each date.
USGS provisional data may be revised. Source: USGS instantaneous values.
| Time | Discharge (ft³/s) | Gauge height (ft) | Normal, 25th–75th (ft³/s) |
|---|---|---|---|
| Nov 5, 7:15 PM EST | 2,080 | 0.87 | 1,510–7,560 |
| Nov 5, 6:15 PM EST | 2,080 | 0.87 | 1,510–7,560 |
| Nov 5, 5:15 PM EST | 2,100 | 0.88 | 1,510–7,560 |
| Nov 5, 4:15 PM EST | 2,130 | 0.9 | 1,510–7,560 |
| Nov 5, 3:15 PM EST | 2,130 | 0.9 | 1,510–7,560 |
| Nov 5, 2:15 PM EST | 2,140 | 0.91 | 1,510–7,560 |
| Nov 5, 1:15 PM EST | 2,110 | 0.89 | 1,510–7,560 |
| Nov 5, 12:15 PM EST | 2,110 | 0.89 | 1,510–7,560 |
| Nov 5, 11:15 AM EST | 2,130 | 0.9 | 1,510–7,560 |
| Nov 5, 10:15 AM EST | 2,140 | 0.91 | 1,510–7,560 |
| Nov 5, 9:15 AM EST | 2,160 | 0.92 | 1,510–7,560 |
| Nov 5, 8:15 AM EST | 2,080 | 0.87 | 1,510–7,560 |
| Nov 5, 7:15 AM EST | 1,970 | 0.79 | 1,510–7,560 |
| Nov 5, 6:15 AM EST | 1,930 | 0.76 | 1,510–7,560 |
| Nov 5, 5:15 AM EST | 1,910 | 0.75 | 1,510–7,560 |
| Nov 5, 4:15 AM EST | 1,910 | 0.75 | 1,510–7,560 |
| Nov 5, 3:15 AM EST | 1,930 | 0.76 | 1,510–7,560 |
| Nov 5, 2:15 AM EST | 1,930 | 0.76 | 1,510–7,560 |
| Nov 5, 1:15 AM EST | 1,910 | 0.75 | 1,510–7,560 |
| Nov 5, 12:15 AM EST | 1,930 | 0.76 | 1,510–7,560 |
| Nov 4, 11:15 PM EST | 1,930 | 0.76 | 1,490–7,620 |
| Nov 4, 10:15 PM EST | 1,910 | 0.75 | 1,490–7,620 |
| Nov 4, 9:15 PM EST | 1,910 | 0.75 | 1,490–7,620 |
| Nov 4, 8:15 PM EST | 1,930 | 0.76 | 1,490–7,620 |
| Nov 4, 7:15 PM EST | 1,940 | 0.77 | 1,490–7,620 |
| Nov 4, 6:15 PM EST | 1,940 | 0.77 | 1,490–7,620 |
| Nov 4, 5:15 PM EST | 1,930 | 0.76 | 1,490–7,620 |
| Nov 4, 4:15 PM EST | 1,910 | 0.75 | 1,490–7,620 |
| Nov 4, 3:15 PM EST | 1,900 | 0.74 | 1,490–7,620 |
| Nov 4, 2:15 PM EST | 1,900 | 0.74 | 1,490–7,620 |
| Nov 4, 1:15 PM EST | 1,890 | 0.73 | 1,490–7,620 |
| Nov 4, 12:15 PM EST | 1,910 | 0.75 | 1,490–7,620 |
| Nov 4, 11:15 AM EST | 1,910 | 0.75 | 1,490–7,620 |
| Nov 4, 10:15 AM EST | 1,930 | 0.76 | 1,490–7,620 |
| Nov 4, 9:15 AM EST | 1,940 | 0.77 | 1,490–7,620 |
| Nov 4, 8:15 AM EST | 1,940 | 0.77 | 1,490–7,620 |
| Nov 4, 7:15 AM EST | 1,940 | 0.77 | 1,490–7,620 |
| Nov 4, 6:15 AM EST | 1,940 | 0.77 | 1,490–7,620 |
| Nov 4, 5:15 AM EST | 1,940 | 0.77 | 1,490–7,620 |
| Nov 4, 4:15 AM EST | 1,940 | 0.77 | 1,490–7,620 |
| Nov 4, 3:15 AM EST | 1,940 | 0.77 | 1,490–7,620 |
| Nov 4, 2:15 AM EST | 1,940 | 0.77 | 1,490–7,620 |
| Nov 4, 1:15 AM EST | 1,960 | 0.78 | 1,490–7,620 |
| Nov 4, 12:15 AM EST | 1,940 | 0.77 | 1,490–7,620 |
| Nov 3, 11:15 PM EST | 1,960 | 0.78 | 1,440–6,870 |
| Nov 3, 10:15 PM EST | 1,970 | 0.79 | 1,440–6,870 |
| Nov 3, 9:15 PM EST | 1,970 | 0.79 | 1,440–6,870 |
| Nov 3, 8:15 PM EST | 1,970 | 0.79 | 1,440–6,870 |
| Nov 3, 7:15 PM EST | 1,970 | 0.79 | 1,440–6,870 |
| Nov 3, 6:15 PM EST | 1,970 | 0.79 | 1,440–6,870 |
| Nov 3, 5:15 PM EST | 1,960 | 0.78 | 1,440–6,870 |
| Nov 3, 4:15 PM EST | 1,940 | 0.77 | 1,440–6,870 |
| Nov 3, 3:15 PM EST | 1,930 | 0.76 | 1,440–6,870 |
| Nov 3, 2:15 PM EST | 1,930 | 0.76 | 1,440–6,870 |
| Nov 3, 1:15 PM EST | 1,940 | 0.77 | 1,440–6,870 |
| Nov 3, 12:15 PM EST | 1,940 | 0.77 | 1,440–6,870 |
| Nov 3, 11:15 AM EST | 1,960 | 0.78 | 1,440–6,870 |
| Nov 3, 10:15 AM EST | 1,970 | 0.79 | 1,440–6,870 |
| Nov 3, 9:15 AM EST | 1,970 | 0.79 | 1,440–6,870 |
| Nov 3, 8:15 AM EST | 1,980 | 0.8 | 1,440–6,870 |
| Nov 3, 7:15 AM EST | 1,980 | 0.8 | 1,440–6,870 |
| Nov 3, 6:15 AM EST | 1,980 | 0.8 | 1,440–6,870 |
| Nov 3, 5:15 AM EST | 1,980 | 0.8 | 1,440–6,870 |
| Nov 3, 4:15 AM EST | 1,980 | 0.8 | 1,440–6,870 |
| Nov 3, 3:15 AM EST | 1,980 | 0.8 | 1,440–6,870 |
| Nov 3, 2:15 AM EST | 1,980 | 0.8 | 1,440–6,870 |
| Nov 3, 1:15 AM EST | 1,980 | 0.8 | 1,440–6,870 |
| Nov 3, 12:15 AM EST | 1,980 | 0.8 | 1,440–6,870 |
| Nov 2, 11:15 PM EST | 2,000 | 0.81 | 1,440–6,520 |
| Nov 2, 10:15 PM EST | 2,000 | 0.81 | 1,440–6,520 |
| Nov 2, 9:15 PM EST | 2,000 | 0.81 | 1,440–6,520 |
| Nov 2, 8:15 PM EST | 2,000 | 0.81 | 1,440–6,520 |
| Nov 2, 7:15 PM EST | 2,010 | 0.82 | 1,440–6,520 |
| Nov 2, 6:15 PM EST | 2,010 | 0.82 | 1,440–6,520 |
| Nov 2, 5:15 PM EST | 2,010 | 0.82 | 1,440–6,520 |
| Nov 2, 4:15 PM EST | 2,000 | 0.81 | 1,440–6,520 |
| Nov 2, 3:15 PM EST | 2,000 | 0.81 | 1,440–6,520 |
| Nov 2, 2:15 PM EST | 2,000 | 0.81 | 1,440–6,520 |
| Nov 2, 1:15 PM EST | 2,000 | 0.81 | 1,440–6,520 |
| Nov 2, 12:15 PM EST | 2,000 | 0.81 | 1,440–6,520 |
| Nov 2, 11:15 AM EST | 2,000 | 0.81 | 1,440–6,520 |
| Nov 2, 10:15 AM EST | 2,010 | 0.82 | 1,440–6,520 |
| Nov 2, 9:15 AM EST | 2,010 | 0.82 | 1,440–6,520 |
| Nov 2, 8:15 AM EST | 2,010 | 0.82 | 1,440–6,520 |
| Nov 2, 7:15 AM EST | 2,030 | 0.83 | 1,440–6,520 |
| Nov 2, 6:15 AM EST | 2,030 | 0.83 | 1,440–6,520 |
| Nov 2, 5:15 AM EST | 2,030 | 0.83 | 1,440–6,520 |
| Nov 2, 4:15 AM EST | 2,030 | 0.83 | 1,440–6,520 |
| Nov 2, 3:15 AM EST | 2,030 | 0.83 | 1,440–6,520 |
| Nov 2, 2:15 AM EST | 2,030 | 0.83 | 1,440–6,520 |
| Nov 2, 1:15 AM EST | 2,040 | 0.84 | 1,440–6,520 |
| Nov 2, 12:15 AM EST | 2,040 | 0.84 | 1,440–6,520 |
| Nov 1, 11:15 PM EST | 2,040 | 0.84 | 1,370–6,460 |
| Nov 1, 10:15 PM EST | 2,040 | 0.84 | 1,370–6,460 |
| Nov 1, 9:15 PM EST | 2,040 | 0.84 | 1,370–6,460 |
| Nov 1, 8:15 PM EST | 2,040 | 0.84 | 1,370–6,460 |
| Nov 1, 7:15 PM EST | 2,040 | 0.84 | 1,370–6,460 |
| Nov 1, 6:15 PM EST | 2,040 | 0.84 | 1,370–6,460 |
| Nov 1, 5:15 PM EST | 2,040 | 0.84 | 1,370–6,460 |
| Nov 1, 4:15 PM EST | 2,040 | 0.84 | 1,370–6,460 |
| Nov 1, 3:15 PM EST | 2,040 | 0.84 | 1,370–6,460 |
| Nov 1, 2:15 PM EST | 2,040 | 0.84 | 1,370–6,460 |
| Nov 1, 1:15 PM EST | 2,040 | 0.84 | 1,370–6,460 |
| Nov 1, 12:15 PM EST | 2,040 | 0.84 | 1,370–6,460 |
| Nov 1, 11:15 AM EST | 2,040 | 0.84 | 1,370–6,460 |
| Nov 1, 10:15 AM EST | 2,060 | 0.85 | 1,370–6,460 |
| Nov 1, 9:15 AM EST | 2,060 | 0.85 | 1,370–6,460 |
| Nov 1, 8:15 AM EST | 2,060 | 0.85 | 1,370–6,460 |
| Nov 1, 7:15 AM EST | 2,060 | 0.85 | 1,370–6,460 |
| Nov 1, 6:15 AM EST | 2,060 | 0.85 | 1,370–6,460 |
| Nov 1, 5:15 AM EST | 2,060 | 0.85 | 1,370–6,460 |
| Nov 1, 4:15 AM EST | 2,070 | 0.86 | 1,370–6,460 |
| Nov 1, 3:15 AM EST | 2,070 | 0.86 | 1,370–6,460 |
| Nov 1, 2:15 AM EST | 2,070 | 0.86 | 1,370–6,460 |
| Nov 1, 1:15 AM EST | 2,070 | 0.86 | 1,370–6,460 |
| Nov 1, 1:15 AM EDT | 2,070 | 0.86 | 1,370–6,460 |
| Nov 1, 12:15 AM EDT | 2,070 | 0.86 | 1,370–6,460 |
| Oct 31, 11:15 PM EDT | 2,070 | 0.86 | 1,410–6,750 |
| Oct 31, 10:15 PM EDT | 2,070 | 0.86 | 1,410–6,750 |
| Oct 31, 9:15 PM EDT | 2,070 | 0.86 | 1,410–6,750 |
| Oct 31, 8:15 PM EDT | 2,070 | 0.86 | 1,410–6,750 |
| Oct 31, 7:15 PM EDT | 2,070 | 0.86 | 1,410–6,750 |
| Oct 31, 6:15 PM EDT | 2,070 | 0.86 | 1,410–6,750 |
| Oct 31, 5:15 PM EDT | 2,080 | 0.87 | 1,410–6,750 |
| Oct 31, 4:15 PM EDT | 2,100 | 0.88 | 1,410–6,750 |
| Oct 31, 3:15 PM EDT | 2,110 | 0.89 | 1,410–6,750 |
| Oct 31, 2:15 PM EDT | 2,130 | 0.9 | 1,410–6,750 |
| Oct 31, 1:15 PM EDT | 2,100 | 0.88 | 1,410–6,750 |
| Oct 31, 12:15 PM EDT | 2,110 | 0.89 | 1,410–6,750 |
| Oct 31, 11:15 AM EDT | 2,110 | 0.89 | 1,410–6,750 |
| Oct 31, 10:15 AM EDT | 2,140 | 0.91 | 1,410–6,750 |
| Oct 31, 9:15 AM EDT | 2,140 | 0.91 | 1,410–6,750 |
| Oct 31, 8:15 AM EDT | 2,140 | 0.91 | 1,410–6,750 |
| Oct 31, 7:15 AM EDT | 2,140 | 0.91 | 1,410–6,750 |
| Oct 31, 6:15 AM EDT | 2,160 | 0.92 | 1,410–6,750 |
| Oct 31, 5:15 AM EDT | 2,170 | 0.93 | 1,410–6,750 |
| Oct 31, 4:15 AM EDT | 2,170 | 0.93 | 1,410–6,750 |
| Oct 31, 3:15 AM EDT | 2,170 | 0.93 | 1,410–6,750 |
| Oct 31, 2:15 AM EDT | 2,170 | 0.93 | 1,410–6,750 |
| Oct 31, 1:15 AM EDT | 2,160 | 0.92 | 1,410–6,750 |
| Oct 31, 12:15 AM EDT | 2,160 | 0.92 | 1,410–6,750 |
| Oct 30, 11:15 PM EDT | 2,170 | 0.93 | 1,440–7,170 |
| Oct 30, 10:15 PM EDT | 2,170 | 0.93 | 1,440–7,170 |
| Oct 30, 9:15 PM EDT | 2,160 | 0.92 | 1,440–7,170 |
| Oct 30, 8:15 PM EDT | 2,160 | 0.92 | 1,440–7,170 |
| Oct 30, 7:15 PM EDT | 2,160 | 0.92 | 1,440–7,170 |
| Oct 30, 6:15 PM EDT | 2,160 | 0.92 | 1,440–7,170 |
| Oct 30, 5:15 PM EDT | 2,170 | 0.93 | 1,440–7,170 |
| Oct 30, 4:15 PM EDT | 2,190 | 0.94 | 1,440–7,170 |
| Oct 30, 3:15 PM EDT | 2,230 | 0.97 | 1,440–7,170 |
| Oct 30, 2:15 PM EDT | 2,220 | 0.96 | 1,440–7,170 |
| Oct 30, 1:15 PM EDT | 2,220 | 0.96 | 1,440–7,170 |
| Oct 30, 12:15 PM EDT | 2,220 | 0.96 | 1,440–7,170 |
| Oct 30, 11:15 AM EDT | 2,190 | 0.94 | 1,440–7,170 |
| Oct 30, 10:15 AM EDT | 2,200 | 0.95 | 1,440–7,170 |
| Oct 30, 9:15 AM EDT | 2,200 | 0.95 | 1,440–7,170 |
| Oct 30, 8:15 AM EDT | 2,200 | 0.95 | 1,440–7,170 |
| Oct 30, 7:15 AM EDT | 2,200 | 0.95 | 1,440–7,170 |
| Oct 30, 6:15 AM EDT | 2,200 | 0.95 | 1,440–7,170 |
| Oct 30, 5:15 AM EDT | 2,200 | 0.95 | 1,440–7,170 |
| Oct 30, 4:15 AM EDT | 2,220 | 0.96 | 1,440–7,170 |
| Oct 30, 3:15 AM EDT | 2,220 | 0.96 | 1,440–7,170 |
| Oct 30, 2:15 AM EDT | 2,220 | 0.96 | 1,440–7,170 |
| Oct 30, 1:15 AM EDT | 2,230 | 0.97 | 1,440–7,170 |
| Oct 30, 12:15 AM EDT | 2,230 | 0.97 | 1,440–7,170 |
| Oct 29, 11:15 PM EDT | 2,250 | 0.98 | 1,370–6,660 |
| Oct 29, 10:15 PM EDT | 2,250 | 0.98 | 1,370–6,660 |
| Oct 29, 9:15 PM EDT | 2,250 | 0.98 | 1,370–6,660 |
| Oct 29, 8:30 PM EDT | 2,250 | 0.98 | 1,370–6,660 |
Map of USGS gauge 01551500 and the river around it
Where WB Susquehanna River at Williamsport, PA sits, with 5 other gauges on the same river and our water's map point.
Normal for Nov 5: 1,510–7,560 ft³/s (middle half of 131 years of record). Now: 2,080 ft³/s, normal.
Normal for this date. 2,080 ft³/s is between the 25th and 75th percentiles of daily mean flow for Nov 5 at this gauge over 131 years of record (1896–2026): 10th 777, 25th 1,510, median 3,520, 75th 7,560, 90th 13,900 ft³/s.
Daily means on record for Nov 5: lowest 445 ft³/s, highest 32,100 ft³/s.
Classes as USGS labels them (hyswap: flow categories (WDFN_stats schema) (U.S. Geological Survey) ); percentiles from the USGS daily statistics (U.S. Geological Survey) (approved daily means; the reading is provisional and instantaneous).
Steady over 24 hours (+7.2% discharge). Rising or falling means a change of more than 10% in discharge (or 0.2 ft of gauge height) over 24 hours; our rule of thumb, not a USGS class.
No current water-temperature reading at this gauge, so no temperature guidance is given. Take a stream thermometer: the trout lines Pennsylvania Fish and Boat Commission uses are 60°F, 70°F and 72°F.
Species the agency lists for West Branch Susquehanna River: Brown Trout.
From our page for West Branch Susquehanna River, on the same river as this gauge; the agency list is for the water, not this exact reach. Source: Class A Wild Trout Waters (Pennsylvania Fish and Boat Commission).
Below NWS action stage. The National Weather Service reports this gauge below its action stage. That is not a statement that wading is safe.
Flood categories: action stage, minor, moderate and major flooding (National Weather Service)Turn Around Don't Drown. “A mere 6 inches of fast-moving flood water can knock over an adult.” No flow number makes a crossing safe; if in doubt, stay out.
Turn Around Don't Drown (National Weather Service)Guidance from the readings above and the published thresholds named with each line; not a fishing forecast, a safety guarantee or a statement about access. Local rules and closures come first.
Below NWS action stage. The National Weather Service reports this gauge below its action stage. That is not a statement that wading is safe.
NWS observed 0.87 ft stage, 2,090 ft³/s at Nov 5, 7:15 PM EST (NWS gauge WILP1; its stage datum can differ from the USGS gauge height).
NWS river forecast forecast issued Nov 5, 9:45 AM EST. Highest point: 0.9 ft, 2,130 ft³/s on Nov 5, 1:00 PM EST (Below NWS action stage).
| Day | Stage | Flow |
|---|---|---|
| Thu, Nov 5 | 0.9 ft | 2,130 ft³/s |
| Fri, Nov 6 | 0.9 ft | 2,130 ft³/s |
| Sat, Nov 7 | 0.8 ft | 1,980 ft³/s |
| Sun, Nov 8 | 0.8 ft | 1,980 ft³/s |
Open the NWS gauge page · What the categories mean (National Weather Service)
Checked Nov 5, 8:23 PM EST; readings refresh at most every 15 minutes and statistics daily. Provisional USGS data can be revised. Conditions change: re-check before you go. This is general guidance, not a fishing forecast, a safety guarantee or a statement about access.