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 during this period may be incomplete and therefore was not used in frequency calculations. Some of the floods are based on current flood stage and nearby gage information.
C2|Crest information during this period 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: 07:31 AM Dec 19, 2014