North Branch Susquehanna River near Waverly, Tioga County NY (WVYN6)
Gage Location: Bradford County, Pennsylvania	Site Location: Tioga County, New York
Latitude: 41.985	Longitude: -76.501	Elevation: 743.96 ft. MSL	Drainage Area: 4773 Sq. Mi.
Minor Stage: 11 ft.	Moderate Stage: 16 ft.	Major Stage: 21.4 ft.
First Flood: 1936-03-18	Last Flood: 2011-09-29 Crest: 12.27 ft.	Datum change: 1937-02-01	Number of Floods: 127

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Date of Flood Crest(ft) Streamflow(cfs) Category Code 1936-03-18 21.4 128000 Major *** (4) (5 1937-10-24 11.36 53400 Minor none 1938-09-23 11.55 54900 Minor none 1939-02-21 14.25 72800 Minor none 1940-04-01 19 106000 Moderate none 1940-04-09 16.4 82600 Moderate none 1941-04-06 14.75 68500 Minor none 1942-03-10 12.7 53500 Minor none 1942-12-31 19.7 112000 Moderate none 1943-03-18 14.92 69900 Minor none 1944-03-18 13.43 58600 Minor none 1945-03-18 13.52 59200 Minor none 1945-03-22 13.69 60400 Minor none 1946-03-09 14.38 67000 Minor none 1946-05-28 16.63 84700 Moderate none 1947-03-26 12.8 57100 Minor none 1947-04-06 15.65 74200 Minor none 1948-03-17 14.13 62900 Minor none 1948-03-22 19.84 109000 Moderate none 1948-12-31 12.38 51300 Minor none 1950-03-29 15.8 75400 Minor none 1950-04-05 14.55 65800 Minor none 1950-12-05 13.61 59300 Minor none 1951-03-31 12.82 53900 Minor none 1952-03-12 13.11 55800 Minor none 1952-12-12 11.63 46800 Minor none 1954-02-18 11.15 43900 Minor none 1955-03-02 11.93 50000 Minor none 1955-10-16 15.47 72200 Minor none 1956-03-08 16.84 83700 Moderate none 1956-04-08 15.72 74800 Minor none 1957-04-07 11.85 48100 Minor none 1958-04-08 16.81 83500 Moderate none 1959-01-23 14.65 66600 Minor none 1959-11-29 12.81 53900 Minor none 1960-02-12 12.84 54000 Minor none 1960-04-01 17.56 89500 Moderate none 1960-04-05 16.26 79100 Moderate none 1961-02-26 17.43 88400 Moderate none 1961-04-25 15.52 73200 Minor none 1962-04-01 15.06 69500 Minor none 1963-03-27 15.52 73200 Minor none 1964-03-06 18.18 94400 Moderate none 1964-03-11 17.92 92400 Moderate none 1966-02-14 11.84 48000 Minor none 1968-03-24 13.3 57100 Minor none 1968-11-19 11.87 48200 Minor none 1970-04-03 13.43 58000 Minor none 1971-03-16 11.65 46900 Minor none 1972-03-03 12.96 54800 Minor none 1972-06-23 21.24 121000 Major none 1972-11-09 13.64 59500 Minor none 1973-12-28 12.13 49800 Minor none 1975-02-25 16.25 79000 Moderate none 1975-09-27 20.16 111000 Moderate (E) (1) 1975-10-20 12.64 52800 Minor none 1976-02-19 13.73 60100 Minor none 1976-02-23 12.76 53600 Minor none 1976-10-10 14.61 66300 Minor none 1977-03-14 15.16 70300 Minor none 1977-09-25 14.44 65100 Minor none 1977-10-18 15.16 70300 Minor none 1978-01-09 13.06 55400 Minor none 1978-01-27 13.49 58400 Minor none 1978-03-28 12.58 52500 Minor none 1979-01-03 14.1 62700 Minor none 1979-01-26 12.62 52900 Minor none 1979-03-06 19.66 107000 Moderate none 1980-03-22 13.24 56900 Minor none 1981-02-21 13.6 59200 Minor none 1981-10-29 12.4 51500 Minor none 1983-04-16 14.72 67300 Minor none 1983-04-25 13.83 60800 Minor none 1983-05-02 12.97 55200 Minor none 1983-12-14 19.94 110000 Moderate none 1984-02-16 18.03 93100 Moderate none 1984-04-06 18.14 94000 Moderate none 1986-03-15 18.12 93800 Moderate none 1986-11-27 14.32 64300 Minor none 1988-05-20 11.4 47100 Minor none 1989-05-12 13.02 52000 Minor none 1990-02-17 11.13 40800 Minor none 1990-10-24 16.2 72200 Moderate none 1993-04-02 18.74 89700 Moderate none 1993-04-11 19.28 93600 Moderate none 1994-03-25 13.53 55000 Minor none 1994-04-07 13.21 53000 Minor none 1996-01-20 20.35 102000 Moderate none 1996-12-02 16.54 75300 Moderate none 1998-01-09 15.35 67500 Minor none 1999-01-25 14.22 60500 Minor none 2000-02-28 16.65 76000 Moderate (1) 2000-04-05 13.89 58400 Minor none 2000-05-25 11.2 42800 Minor none 2001-04-11 12.97 55300 Minor none 2002-03-27 11.44 45900 Minor none 2003-03-23 14.16 61700 Minor none 2003-10-30 11.25 43100 Minor none 2003-12-12 11.38 43800 Minor none 2004-03-07 12.4 49600 Minor none 2004-09-18 18.63 89400 Moderate none 2005-01-15 14.52 63600 Minor none 2005-03-30 15.08 66600 Minor none 2005-04-04 20.88 105000 Moderate none 2005-11-30 13.11 56100 Minor none 2006-01-19 13.12 56100 Minor none 2006-06-29 22.52 128000 Major none 2006-11-17 15.59 72600 Minor none 2007-03-16 14.2 62900 Minor none 2007-03-27 12.29 50300 Minor none 2007-04-20 11.37 44600 Minor none 2008-02-07 13.58 58700 Minor none 2008-03-06 12.62 52400 Minor none 2008-03-09 14.35 63900 Minor none 2008-03-20 11.81 47300 Minor none 2009-03-10 12.78 53400 Minor none 2010-10-01 11.26 43900 minor none 2011-03-07 12.59 52200 Minor none 2011-03-11 16.17 76800 Moderate none 2011-03-19 11.68 46500 Minor none 2011-04-06 11.5 45400 Minor none 2011-04-28 16.7 80800 Moderate none 2011-05-04 11.09 42900 Minor none 2011-09-08 26.67 167000 Major none 2011-09-29 12.27 50200 Minor none

MARFC Codes
Code Description
(!!!) Datum changed during this year.
(1) Backwater Effect.
(2) 15.77 ft also occurred on 11/25/1950 but only counted as one flood.
(3) Estimated from currrent USGS rating table.
(4) Estimated height from the USGS.
(5) Gage height at a different site and/or datum
(6) Discharge affected by Regulation or Diversion
(7) Due to changes, prior floods were based on present flood stage. Therefore, flood data could possibly be incomplete.
(8) Gage is a staff gage and not the offical USGS gage. Therefore, some floods may be missing from our study.
(9) Discharge effected by snow-melt, ice jam or debris jam break up
(A) Discharge affected to unknown degree by regulation or diversion.
(B) Month or day of occurrence is unknown or not exact.
(C) All or part of the record affected by urbanization, mining, agricultural changes, channelization, or other factors.
(D) Crest height adjusted to current datum.
(E) Estimated discharge.
(F) Only annual maximum peak available for this year.
(O) This flood occurred at a previous flood stage that is lower than the current flood stage. This is only a historical flood.
** Crest information looks reasonable despite potential problems. This data was used in our study.
*** Crest information looks unreliable and incomplete and was not used in our flood frequency study.
**** Gauge was discontinued in 2004. 2004 and later was not used in our study.
none No code

Updated: 08:58 AM Jun 28, 2012