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This probabilistic forecast is issued by the Middle Atlantic River Forecast Center.
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Experimental Short Range Forecast Uncertainty (AHPS) - External Links: Product Description Document | Customer Survey
About this graph
Forecasts for the Tioga River at Mansfield are issued routinely year-round.
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Downstream Gauge Downstream Gauge - other Tioga-Hammond Dam on Tioga River
Zoom Level:15
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) 20.13 ft on 09/25/1975
(2) 18.87 ft on 01/19/1996
(3) 18.57 ft on 08/18/1994
(4) 17.98 ft on 06/22/1972
(5) 16.50 ft on 12/02/1996
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 13.08 ft on 09/08/2011
(2) 12.30 ft on 04/02/2005
(3) 9.09 ft on 01/14/2005
(4) 14.21 ft on 09/18/2004
(5) 16.50 ft on 12/02/1996
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) -15.00 ft on 09/13/1991
KML Image
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
20.5 FEMA 0.2% Annunal Chance Flood Level (500-year flood).
20.1 Flood of record from September 1975. Flood waters begin to reach the West Hill Road bridge in Convington.
19 FEMA 1% Annunal Chance Flood Level (100-year flood).
16.5 FEMA 2% Annunal Chance Flood Level (50-year flood). Flood waters begin to reach the Route 660 bridge on the north side of Covington and the North Williamson Road bridge just south of Covington.
16 Flood waters begin to reach the Spencer Road Bridge.
14 FEMA 10% Annunal Chance Flood Level (10-year flood).
12 Water begins to affect several homes and a business along business Route 15 south of the city of Mansfield next to Canoe Creek.
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
3 Day (SREF) 7 Day (NAEFS) 7 Day (GEFS)
SREF Ensemble NAEFS Ensemble  GEFS Ensemble 

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.

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: 5-Mar-2019 11:43 PM
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