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This probabilistic forecast is issued by the Middle Atlantic River Forecast Center.
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About this graph
Forecasts for the West Branch Susquehanna River near Muncy are issued routinely year-round.
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Upstream Gauge - at Williamsport Upstream Gauge Downstream Gauge Downstream Gauge - at Allenwood
Zoom Level:16
Flood Categories (in feet)
Major Flood Stage: 28
Moderate Flood Stage: 22
Flood Stage: 20
Action Stage: 16
Low Stage (in feet): 0

Historic Crests
(1) 37.45 ft on 06/23/1972
(2) 35.90 ft on 03/18/1936
(3) 30.30 ft on 05/28/1946
(4) 28.80 ft on 09/19/2004
(5) 28.80 ft on 11/26/1950
(6) 28.78 ft on 03/11/1964
(7) 28.60 ft on 01/20/1996
(8) 28.05 ft on 09/26/1975
(9) 24.30 ft on 12/02/2010
(10) 22.70 ft on 03/11/2011
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 21.20 ft on 09/11/2018
(2) 22.70 ft on 03/11/2011
(3) 24.30 ft on 12/02/2010
(4) 20.30 ft on 04/03/2005
(5) 28.80 ft on 09/19/2004
(6) 28.60 ft on 01/20/1996
(7) 19.90 ft on 08/19/1995
(8) 16.50 ft on 04/07/1994
(9) 17.50 ft on 04/04/1994
(10) 19.50 ft on 03/25/1994
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 0.92 ft on 09/13/1983
KML Image
Gauge LocationGauge Map Marker
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 Collapse
If you notice any errors in the below information, please contact our Webmaster
37 Most of the northern portion of Muncy is inundated by flood waters.
35 High water affects the Muncy Valley Hospital.
31 North Market, Main, and Washington Streets are flooded.
29 The water level reaches the old feed mill on West Water Street.
28 Numerous homes and businesses in Montgomery are affected by high water.
27 Numerous homes and businesses in Muncy are affected.
25 The Andritz (Sprout Bauer) plant experiences significant flooding. Many homes in low lying areas are also affected.
24 Several homes on Broad Street and Second Streets in Montgomery are affected.
23 The Andritz (Sprout Bauer) plant is affected by high water.
22 A number of homes are flooded. Route 405 is affected between Muncy and Montgomery. South Main Street and Ellis Parkway are flooded in Montgomery.
21 Old Route 147 is inundated north of Muncy.
20 A few residences in Muncy flood. Ellis Parkway in Montgomery floods, limiting access to the Riverside Campground office and the campground.
18 Both banks overflow into agricultural fields.
17 The Riverside Campground and the River Field Little League Complex in Montgomery are affected by high water.
16 Both banks overflow into agricultural fields.
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) 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 Collapse
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
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Page last modified: 2-Nov-2020 7:30 PM
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