West Branch Susquehanna River at Lewisburg

Last updated: Jul 17, 2025, 9:42 PM UTC
No watches, warnings or advisories are in effect for this area.

Flood Impacts 🅘

  • 40 - Approximate level of the FEMA 0.2 0X0P+0nnual Chance Flood level (500-year flood).
  • 34.2 - Flood of record from Hurricane Agnes in 1972.
  • 32.5 - Approximate level of the FEMA 1 0X0P+0nnual Chance Flood level (100-year flood).

Gauge Info

Coordinates 40.9676, -76.8764
RFC MARFC
State PA
WFO CTP
County Northumberland
Data Provider(s)
US Geological Survey USGS--Water Resources of the United States
USGS 01553500

Gauge Location

Recent Crests

1. 19.35 ft on 09-12-2018
2. 25.91 ft on 09-08-2011
3. 20.13 ft on 04-29-2011
4. 20.78 ft on 03-12-2011
5. 20.90 ft on 12-02-2010

Historic Crests

1. 34.23 ft on 06-24-1972
2. 32.10 ft on 03-19-1936 1
3. 29.80 ft on 06-01-1889 1
4. 28.50 ft on 05-21-1894 1
5. 28.43 ft on 05-29-1946

Vertical Datum Table

type NAVD88
major Flooding 455.45 ft
moderate Flooding 450.45 ft
minor Flooding 445.45 ft
action 441.45 ft
Latest Value 430.92 ft
Gauge Zero 427.45 ft

Gauge Photos

Photo 1 of 5

Downstream

Probability Information

Photo 1 of 3

Unique Local Info

Potential River Levels - Used to

Potential River Levels
Used to Estimate the Chance of Flooding and the Range of Possible River Levels
10 Day (HEFS) 10 Day (NAEFS) 10 Day (GEFS)
HEFS Ensemble NAEFS Ensemble GEFS Ensemble

Note: Use the official hydrograph at the top of this web page for river levels within the next 72 hours.

Click individual graphics to enlarge.

Collaborative Agencies

The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.

WFO Information

Weather Forecast Office
State College
328 Innovation Boulevard, Suite 330
State College, PA 16803
Official Homepage