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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 Loyalsock Creek at Loyalsockville are issued routinely year-round.
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Zoom Level:16
Flood Categories (in feet)
Major Flood Stage: 14
Moderate Flood Stage: 13
Flood Stage: 12
Action Stage: 9
Low Stage (in feet): 0

Historic Crests
(1) 19.78 ft on 09/08/2011
(2) 17.93 ft on 01/19/1996
(3) 15.24 ft on 09/18/2004
(4) 14.74 ft on 06/23/1972
(5) 14.50 ft on 09/26/1975
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 12.45 ft on 12/25/2020
(2) 12.03 ft on 10/21/2016
(3) 19.78 ft on 09/08/2011
(4) 12.42 ft on 03/11/2011
(5) 15.24 ft on 09/18/2004
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 0.22 ft on 11/24/1964
(2) 0.22 ft on 08/12/1966
(3) 0.25 ft on 09/04/1968
(4) 0.28 ft on 09/25/1964
(5) 0.28 ft on 07/18/1971
Show More Low Water Records
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Gauge LocationGauge Map Marker
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 Collapse
If you notice any errors in the below information, please contact our Webmaster
28 Flood waters begin to reach the Route 973 Bridge in Loyalsocksville.
20.5 Approximate level of the FEMA 0.2% Annual Chance Flood level (500-year flood).
19.8 Flood of record from Tropical Storm Lee in 2011.
17 Approximate level of the FEMA 0.2% Annual Chance Flood level (500-year flood).
16 Approximate level of the FEMA 1% Annual Chance Flood level (100-year flood).
14 Numerous homes adjacent to the creek are affected by high water levels.
13 Approximate level of the FEMA 10% Annual Chance Flood level (10-year flood). Several homes and the Loyalsock Game Farm are affected by high water levels.
12 Several residences are affected by high water levels. Mill Street in Montoursville is flooded by Loyalsock Creek.
11 High water prevents access to several homes adjacent to the creek.
9 Residents living adjacent to the creek are encouraged to monitor water levels for additional rises. The driveways of several homes are affected by high water.
8 Water is on the bike path under Green Bridge at Montoursville.
Photos
(1) looking upstream
(2) view of the gagehouse
(3) looking downstream

Other Real-time and/or Archive Data Sources:

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.

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
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328 Innovation Boulevard, Suite 330
State College, PA 16803
(814) 954-6400
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Page last modified: 2-Nov-2020 7:30 PM
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