WB Susquehanna River at Williamsport, PA

Lycoming County, Pennsylvania · USGS gauge 01551500 · NWS WILP1 · Wb Susquehanna River flood status · Pennsylvania river levels

Nearby: river levels near Williamsport

Is WB Susquehanna River at Williamsport, PA flooding right now?

WB Susquehanna River at Williamsport, PA measured 1.16 ft on 2026-10-27 18:15:00 UTC. That observation was 18.8 ft below its 20 ft flood stage. This is the latest available reading, not a guarantee of current conditions.

Gauge height
1.16 ft
as of 39 min ago
Streamflow
2,520 cfs
data refreshed 8 min ago

Minor flooding here begins at 20 ft, with major flooding at 30 ft. The highest crest on record was 34.75 ft on Fri, Jun 23, 1972.

Flood forecast

NWS forecast, issued 6 hours ago. Forecasts are issued for select river points and update through the day.

Flood stages at this gauge

CategoryStageCurrent distance
Action10 ft8.8 ft below
Minor flood20 ft18.8 ft below
Moderate flood21 ft19.8 ft below
Major flood30 ft28.8 ft below

New to these numbers? What does flood stage mean? · How to read a river gauge · Why is the river rising?

Highest crests on record

StageDate
34.75 ft1972-06-23
33.57 ft1936-03-18
32.4 ft1889-06-01
31 ft1884-05-21
29.6 ft1946-05-28

Nearby gauges

GaugeDistanceCounty
Lycoming Creek near Williamsport, PA3.4 miLycoming County
Loyalsock Creek at Loyalsockville, PA7.5 miLycoming County
West Branch Susquehanna River at Allenwood, PA10.4 miUnion County
Lycoming Creek near Trout Run, PA12.7 miLycoming County
Muncy Creek near Muncy, PA12.8 miLycoming County
Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.

Sources: USGS monitoring location · NWS gauge & forecast