National Weather Service Advanced Hydrologic Prediction Service

weather.gov

Home

News

Organization

Search by city or zip code. Press enter or select the go button to submit request

National Conditions
    Rivers
    Satellite
    Climate
    Observed Precip

Local Conditions
    Warnings
    Weather Forecast
    Radar

AHPS Documentation
User Guide
User Brochure

What is AHPS?
Facts
Our Partners

Feedback/Questions
Provide Feedback
Ask Questions

Weather Forecast Office State College, PA

Middle Atlantic River Forecast Center

Hydrograph

River at a Glance

Download

West Branch Susquehanna River at Lewisburg

Printable Image

About this graph

Tabular Data (UTC)

Tabular Data (EDT)

Datum: NGVD29

Metadata

NOTE: Forecasts for the West Branch Susquehanna River at Lewisburg are issued routinely year-round.

Return to Area Map

Upstream Gauge

Flood Categories (in feet)

Major Flood Stage:	28
Moderate Flood Stage:	23
Flood Stage:	18
Action Stage:	14
Low Stage (in feet):	0

Historic Crests
(1) 34.23 ft on 06/24/1972
(2) 32.10 ft on 03/19/1936
(3) 29.80 ft on 06/01/1889
(4) 28.50 ft on 05/21/1894
(5) 28.43 ft on 05/29/1946
Show More Historic Crests

(P): Preliminary values subject to further review.

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
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 0.57 ft on 11/16/1964
(2) 0.65 ft on 09/14/1983
(3) 0.90 ft on 08/22/1988
(4) 0.98 ft on 09/15/1980
(5) 0.99 ft on 10/06/1983
Show More Low Water Records

For more information on your flood risk go to www.floodsmart.gov.

Show FEMA's National Flood Hazard Layers

Zoom Level:13

	Gauge Location	Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.

Flood Impacts & Photos

If you notice any errors in the below information, please contact our Webmaster
40	Approximate level of the FEMA 0.2% Annual Chance Flood level (500-year flood).
34.2	Flood of record from Hurricane Agnes in 1972.
32.5	Approximate level of the FEMA 1% Annual Chance Flood level (100-year flood).
32	Flood waters begin to reach the Market Street Bridge. The intersection of 4th and Catherine Streets is inundated. A significant portion of Lewisburg is inundated.
30	Approximate level of the FEMA 2% Annual Chance Flood level (50-year flood).
28	The right, or west bank overflows and affects Lewisburg. Widespread inundation on the left bank affects several mobile home parks. Many residences and businesses on both banks are affected by flood waters.
25.5	Approximate level of the FEMA 10% Annual Chance Flood level (10-year flood).
25	Low lying areas on the right, or west bank are affected. The left bank continues to experience inundation.
23	The mobile home park along Route 405 downstream of the bridge will flood.
21	The left, or east bank experiences substantial overflow.
19	Route 405 is affected downstream of the Lewisburg Bridge.
18	The left, or east bank overflows. Low lying areas will flood.
Photos (1) looking upstream (2) view of the gagehouse (3) looking downstream

About This Location

Latitude: 40.967585° N, Longitude: 76.876354° W, Horizontal Datum: NAD83/WGS84

River Stage Reference Frame	Gauge Height	Flood Stage	Uses
NWS stage	0 ft	18 ft	Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum	Elevation (gauge height = 0)	Elevation (gauge height = flood stage)	Elevation information source
NAVD88	Not Available	Not Available	Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29	428.2	446.2	Older USGS topographic maps, NGVD29 benchmarks
MSL	Not Available	Not Available	Older USGS topographic maps, MSL benchmarks
Other	Not Available	Not Available

Current/Historical Observations:

U.S. Geological Survey (USGS) Data and Site Info for Lewisburg

Additional Information

Potential River Levels - Used to

Potential River Levels Used to Estimate the Chance of Flooding and the Range of Possible River Levels
3 Day (SREF)	7 Day (NAEFS)	7 Day (GEFS)

Note: Use the official hydrograph at the top of this web page for river levels within the next 48 hours.

See the Product Description Document link for more details on the interpretation of the 3,7 day graphics.

Click individual graphics to enlarge.

Resources

Hydrologic Resources

Additional Resources

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.

NWS Information

National Weather Service
State College Weather Forecast Office
328 Innovation Boulevard, Suite 330
State College, PA 16803
(814) 231-2408
Ask Questions/Webmaster
Page last modified: 1-Mar-2019 12:35 AM

Disclaimer
Credits
Glossary