North Branch Susquehanna River at Owego, Tioga County NY (OWGN6)
Gage Location: Tioga County, New YorkSite Location: Tioga County, New York
Latitude: 42.1Longitude: -76.26Elevation: 776.64 ft. MSLDrainage Area: 4216 Sq. Mi.
Minor Stage: 30 ft. Moderate Stage: 32 ft.Major Stage: 33 ft.
First Flood: 1936-03-18Last Flood: 2011-09-08 Crest: 39.62 ft.Datum change: 1998-09-01Number of Floods: 7

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Date of FloodCrest(ft)Streamflow(cfs)CategoryCode
1936-03-18-9999112000MajorC1 F1
1993-04-1131.9776300MinorC1
1996-01-2032.9781400ModerateC1 F3
2004-09-1831.0489800Minornone
2005-04-0333.15106000Moderatenone
2006-06-2935.9127000Majornone
2011-09-0839.62159000Majornone



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: 08:00 PM May 28, 2014