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West Branch Susquehanna River at Jersey Shore, PA (JRSP1)


Data Type




Inundation Levels
NAVD88 Stage

552.5*40.0*
551.5*39.0*
Record Crest: 38.2 ft
550.538.0
549.537.0
548.536.0
547.535.0
546.534.0
545.533.0
544.532.0
543.531.0
542.530.0

Major Flooding Begins

541.529.0

Moderate Flooding Begins

540.528.0
539.527.0

Minor Flooding Begins

538.526.0
537.525.0
536.524.0

Near Flooding Begins

535.523.0

Below Flooding Begins

* = Extended rating
Weather Forecast Office State College, PA Middle Atlantic River Forecast Center
Hydrograph River at a Glance Download Inundation
Mapping
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Click on mapped inundation to see water depth values for that location, or hold shift and drag to zoom to area.

Current Stage:
3.5 ft at 03/29/2024 04:00:00 UTC
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Inundation Legend
Depth in feet
USGS Gauge Location Gauge Location
What is UTC time? Map Help

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.

Gauge Information Collapse

Map Overlays

Flood Categories (in feet)
Major Flood Stage: 29
Moderate Flood Stage: 28
Flood Stage: 26
Action Stage: 23
Low Stage (in feet): 0

Historic Crests
(1) 38.20 ft on 06/23/1972
(2) 37.90 ft on 03/19/1936
(3) 37.30 ft on 06/01/1889
(4) 32.80 ft on 11/25/1950
(5) 30.74 ft on 09/18/2004
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 30.74 ft on 09/18/2004
(2) 29.50 ft on 01/20/1996
(3) 23.00 ft on 04/02/1993
(4) 27.00 ft on 02/15/1984
(5) 25.50 ft on 03/06/1979
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

Graphical representation of flood inundation for NWS flood categories are based on steady state hydraulic modeling of water surface elevations for incremented discharges. Map shows approximate inundation areas for given water surface elevations and should not be used for navigation or permitting or other legal purposes, but strictly as a planning reference tool.

Site-specific information:

The scientific publication for these maps is available from the USGS at:  http://pubs.usgs.gov/sir/2010/5057/

These maps represent unobstructed flow conditions and may be unrepresentative when ice jams and/or debris are in place.

Extended rating:
Rating Curve Extension - The Rating Curve Extension is calculated by using either a linear, logarithmic, or hydraulic technique to extend the rating curve above the currently established relationship between stage and flow.

Flood Impacts Collapse
If you notice any errors in the below information, please contact our Webmaster
44 Approximate level of the FEMA 0.2% Annual Chance Flood level (500-year flood).
38 Flood of record from Hurricane Agnes in 1972. Approximate level of the FEMA 1% Annual Chance Flood level (100-year flood). Flood waters begin to reach the Route 44 Bridge in Antes Fort.
36.5 Approximate level of the FEMA 2% Annual Chance Flood level (50-year flood).
32.5 Flood waters begin to reach the Route 44 Bridge in Jersey Shore.
32 Most of Jersey Shore adjacent to the river is flooded.
31.5 Approximate level of the FEMA 10% Annual Chance Flood level (10-year flood).
29 Many homes and businesses in Jersey Shore are affected by high water.
28 The left, or north bank overflows. Some homes adjacent to the river are flooded.
26 The river overflows onto Log Island.
23 Long Island (Route 44) and North Main Street in Jersey Shore may be closed to traffic.
Other Data Sources Collapse
Additional Information Collapse
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) 7 Day (NAEFS) 7 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.

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Page last modified: 2-Nov-2020 7:34 PM
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Graphical representation of flood inundation for NWS flood categories are based on steady state hydraulic modeling of water surface elevations for incremented discharges. Map shows approximate inundation areas for given water surface elevations and should not be used for navigation or permitting or other legal purposes, but strictly as a planning reference tool.