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Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at will be replaced by the National Water Prediction Service (NWPS), with a target of Spring 2024. Existing AHPS content and features will be preserved and expanded within NWPS. The NWS is now accepting feedback on NWPS. Please visit for more information.

Experimental National Water Center Products: Flood Inundation Mapping services are now available for 10% of the U.S. population. Please visit for more information. The National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via the URL above, as described in the StoryMap here.

DID YOU KNOW... Please try our new TEST hydrograph page link at: - Just replace “abcde” with your local hydrograph five character ID found in the lower left corner of the hydrograph.  In late March of 2024, the base URL path will become  Feedback can be provided HERE

Hydrograph River at a Glance Download
Loyalsock Creek at Barbours Stage (ft)BARP1(plotting HGIRP) Graph Created (2:02AM Dec 1, 2023)
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About this graph
Tabular Data (UTC)
Tabular Data (EST)
XML Data
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Datum: Not Available
NOTE: Graphical forecasts are not available for the Loyalsock Creek at Barbours. During times of high water, forecast crest information can be found in the text products.
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Upstream Gauge - at Hillsgrove Town Upstream Gauge Downstream Gauge Downstream Gauge - at Loyalsockville
Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 0
Flood Stage: 0
Action Stage: 13
Low Stage (in feet): 0

Historic Crests
(1) 34.00 ft on 09/07/2011
(2) 24.90 ft on 01/19/1996
(3) 22.40 ft on 09/18/2004
(4) 21.90 ft on 06/23/1972
(5) 21.60 ft on 09/26/1975
(6) 21.39 ft on 01/25/2010
(7) 19.60 ft on 08/29/1988
(8) 18.30 ft on 03/10/2011

(P): Preliminary values subject to further review.

Recent Crests
(1) 34.00 ft on 09/07/2011
(2) 18.30 ft on 03/10/2011
(3) 21.39 ft on 01/25/2010
(4) 22.40 ft on 09/18/2004
(5) 24.90 ft on 01/19/1996
(6) 19.60 ft on 08/29/1988
(7) 21.60 ft on 09/26/1975
(8) 21.90 ft on 06/23/1972

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to

Zoom Level:16
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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
15 Moderate to Severe flooding has historically occurred in Montoursville Borough and the remainder of the Lower Loyalsock Creek.
13.5 Between 13.0 and 14.0 feet Borough officials have historically been notified about the liklihood of flooding at Mill Street and Superior Plus.
13 Caution Stage. Lycoming County Emergency Management has historically used this stage as the benchmark elevation for flooding to begin across the watershed.
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Latitude: 41.394167° N, Longitude: 76.800000° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft Not Available  
Vertical Datum Elevation
(gauge height = 0)
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available  
NGVD 29 Not Available Not Available  
MSL Not Available Not Available  
Other Not Available Not Available  
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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
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328 Innovation Boulevard, Suite 330
State College, PA 16803
(814) 231-2408
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