Susquehanna River at Towanda, Bradford County PA (TOWP1)
Gage Location: Bradford County, PennsylvaniaSite Location: Bradford County, Pennsylvania
Latitude: 41.765Longitude: -76.441Elevation: 694.38 ft. MSLDrainage Area: 7797 Sq. Mi.
Minor Stage: 16 ft. Moderate Stage: 18 ft.Major Stage: 25.1 ft.
First Flood: 1865-03-17Last Flood: 2011-09-08 Crest: 30.52 ft.Datum change: 1938-10-18Number of Floods: 92

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Date of FloodCrest(ft)Streamflow(cfs)CategoryCode
1865-03-1725188000ModerateC1
1893-05-0416109000MinorC1
1902-03-0224.5184000ModerateC1
1904-03-2717.8133000MinorC1
1910-03-0218.4142000ModerateC1
1912-03-3016109000MinorC1
1913-03-2820.7146000ModerateC1
1914-03-2920.4173000ModerateC1
1915-02-2517.5129000MinorC1
1915-07-0917.5129000MinorC1
1916-03-3118.3140000ModerateC1
1918-03-1517.2124000MinorC1
1920-03-1317.2124000MinorC1
1924-04-0717.8133000MinorC1
1924-10-0116.8119000MinorC1
1925-02-1218.7146000ModerateC1
1926-11-1716.6116000MinorC1
1927-10-2017.3126000MinorC1
1929-03-1716.8119000MinorC1
1929-04-2219.9165000ModerateC1
1935-01-1016.599500MinorC1
1935-07-0921.1144000ModerateC1
1936-03-1322.34157000ModerateC1
1936-03-1925.03188000ModerateC1
1939-02-2119.13128000Moderatenone
1940-04-0123.84176000Moderatenone
1940-04-0519.75134000Moderatenone
1940-04-0918.13118000Moderatenone
1941-04-0618.47122000Moderatenone
1942-03-1017.21109000Minornone
1942-12-3123.3171000Moderatenone
1945-03-0416.1599400Minornone
1946-05-2925.08191000Moderatenone
1947-04-0619.6132000Moderatenone
1948-03-1716.71104000Minornone
1948-03-2323.04168000Moderatenone
1950-03-2921.18148000Moderatenone
1950-04-0516.72102000Minornone
1950-11-2717.96115000Minornone
1951-03-3118.91124000Moderatenone
1952-03-1217.59111000Minornone
1955-10-1618.96124000Moderatenone
1956-03-0822.28160000Moderatenone
1956-04-0518.27118000Moderatenone
1958-04-0820.86144000Moderatenone
1959-01-2319.52130000Moderatenone
1960-04-0122.76165000Moderatenone
1960-04-0517.96115000Minornone
1961-02-2721.08147000Moderatenone
1961-04-2619.92134000Moderatenone
1962-04-0117.13106000Minornone
1963-03-2817.77113000Minornone
1964-03-0623.63174000Moderatenone
1964-03-1120.77143000Moderatenone
1970-04-0316.0395400Minornone
1972-03-0317.78112000Minornone
1972-06-2433.43320000Majornone
1975-02-2520.2137000Moderatenone
1975-09-2727.47221000Majornone
1976-02-1816.61101000Minornone
1977-03-1416.0495500Minornone
1977-09-2616.4298900Minornone
1978-01-2716.2997700Minornone
1979-01-0316.2297100Minornone
1979-03-0624.04179000Moderatenone
1983-12-1422.4154000ModerateF2
1984-02-1521.69146000ModerateF2
1984-04-0621.84148000ModerateF2
1986-03-1620.23131000ModerateF2
1989-05-1216.0391400MinorF2
1990-10-2418.29117000ModerateF2
1993-04-0221.99152000ModerateF2
1993-04-1121.31145000ModerateF2
1993-04-1716.43100000MinorF2
1994-03-2517.6111000MinorF2
1996-01-2024.84180000ModerateF2
1996-05-1216.58101000MinorF2
1996-11-0918.11116000ModerateF2
1996-12-0217.63111000MinorF2
1998-01-0917.88113000MinorF2
2000-02-2817.62111000MinorF2
2004-09-1822.26154000ModerateF2
2005-01-1517.37110000MinorF2
2005-04-0423.05162000ModerateF2
2005-11-3016.0398000MinorF2
2006-06-2920.83141000ModerateF2
2007-03-1617.46110000MinorF2
2008-02-0716.58103000MinorF2
2010-01-2617.37110000MinorF2
2011-03-1218.96124000ModerateF2
2011-04-2819.41128000ModerateF2
2011-09-0830.52250000MajorF2



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