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

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Month Number of Floods After Datum Number of Floods Total Cumulative Total After Datum Cumulative Total January 5 5 5 5 February 3 3 8 8 March 2 2 10 10 April 4 4 14 14 May 2 2 16 16 June 2 3 18 19 July 0 0 18 19 August 2 2 20 21 September 2 3 22 24 October 1 1 23 25 November 1 1 24 26 December 1 1 25 27 Seasonal Totals Winter (Dec-Jan-Feb) 9 Spring (Mar-Apr-May) 8 Summer (Jun-Jul-Aug) 5 Fall (Sep-Oct-Nov) 5

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: 11:53 AM Feb 17, 2013