Tioga River near Mansfield, Tioga County PA (MFDP1)
Gage Location: Tioga County, PennsylvaniaSite Location: Tioga County, Pennsylvania
Latitude: 41.7969Longitude: -77.0805Elevation: 1121.28 ft. MSLDrainage Area: 153 Sq. Mi.
Minor Stage: 12 ft. Moderate Stage: 13 ft.Major Stage: 14 ft.
First Flood: 1972-06-22Last Flood: 2011-09-08 Crest: 13.08 ft.Datum change: 1976-07-18Number of Floods: 27

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Date of FloodCrest(ft)Streamflow(cfs)CategoryCode
1972-06-2217.9824200MajorC1 C7
1975-09-2520.1318000MajorC1 C8 F1
1977-02-2414.95840Majornone
1978-05-1416.178940Majornone
1979-01-2414.155240Majornone
1980-03-2113.596570Moderatenone
1981-02-2312.874810Minornone
1982-06-0613.165460Moderatenone
1983-04-2412.23250Minornone
1984-02-1414.689490Majornone
1984-11-2912.193150Minornone
1986-03-1513.927430Moderatenone
1987-04-0413.686800Moderatenone
1988-05-1914.629300Majornone
1989-06-1712.914480Minornone
1990-10-2315.4411500Majornone
1992-08-0914.218520Majornone
1993-04-1616.1211500Majornone
1994-08-1818.5733300Majornone
1995-01-2012.731002MinorF1 C3
1996-01-1918.8738900Majornone
1996-12-0216.513200Majornone
1998-01-0814.454700Majornone
1999-01-2414.715260Majornone
2004-09-1814.2120900Majornone
2005-04-0212.313000Minornone
2011-09-0813.0815800Moderatenone



Codes and description

C1|Crest information looks unreliable and incomplete and not used in frequency calculations. Some of the floods are based on current flood stage and nearby gage information.
C2|Crest information looks reliable despite potential problems. This data was used in frequency calculations.
C3|Crest height estimated by the USGS.
C4|Crest height is from the National Weather Service.
C5|Crest height affected by backwater.
C6|Crest occurred at a previous flood stage that is lower than the current flood stage. The crests below the new flood stage are not used in flood frequency calculations.
C7|Crest from USGS yearly peak and/or date is different than the crest we provide. In many cases MARFC uses crest based on backwater or ice effects.
C8|Crest month or day of occurrence has been estimated by The Middle Atlantic River Forecast Center usually based on nearby gage information.
C9|Crest date (day) in the month is unknown.
F1|Flow is an estimate.
F2|Flow affected by regulation or diversion and in some cases to an unknown degree.
F3|Flow effected by snow-melt, ice jam or debris jam break up.
F4|Flow affected by dam failure.
F5|Flow - All or part of the record affected by urbanization, mining, agricultural changes, channelization or other factors.
G1|Gage height at a different site and/or datum.
G2|Gage is not an official USGS gage with crests provided by the NWS. Crest information looks unreliable and incomplete and not used in flood frequency calculations.
G3|Gage datum changed during this year.
none,No code; Good Data

Updated: 07:20 AM Nov 12, 2013