Beaver Kill at Cooks Falls, Delaware County NY (CKFN6)
Gage Location: Delaware County, New York	Site Location: Delaware County, New York
Latitude: 41.946	Longitude: -74.98	Elevation: 1151.7 ft. MSL	Drainage Area: 241 Sq. Mi.
Minor Stage: 10 ft.	Moderate Stage: 16 ft.	Major Stage: 18 ft.
First Flood: 1914-03-28	Last Flood: 2013-03-12 Crest: 10.18 ft.	Datum change: 1933-10-01	Number of Floods: 129

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MINOR FLOODS Date of Flood Crest(ft) 1914-03-28 10.9 1917-03-27 11 1917-10-30 12.4 1921-11-28 11 1923-04-06 10.8 1924-09-30 15 1924-10-01 13 1927-12-08 11.2 1929-03-15 10.2 1934-12-01 11.99 1935-10-31 10.1 1936-03-11 12.72 1936-03-18 15.02 1937-02-22 13.02 1937-10-23 13.32 1938-07-22 13.46 1938-08-11 14.51 1938-09-21 13.67 1938-12-06 10.42 1940-03-31 11.55 1940-04-09 11.26 1941-12-24 11.18 1942-09-27 14.71 1942-12-30 10.95 1943-03-17 11.66 1943-11-09 11.31 1946-03-09 10.14 1948-03-22 11.73 1948-12-30 12.14 1949-01-06 10.32 1950-11-26 15.52 1950-12-04 10.45 1951-11-07 10.5 1952-04-05 10.56 1952-07-10 10.38 1952-12-11 12.54 1955-08-19 11.44 1955-10-16 10.73 1957-12-21 15.42 1959-04-02 10.21 1959-11-28 11.39 1960-04-04 10.66 1961-04-25 10.24 1962-04-01 10.52 1968-03-17 13.65 1969-07-28 15.11 1970-10-23 11.82 1972-11-09 10.09 1973-06-29 11.67 1973-12-21 13.06 1974-12-08 12.68 1976-01-27 11.93 1976-10-09 10.86 1977-03-14 15.2 1977-10-02 10.09 1978-01-09 13.52 1979-01-02 10.5 1979-03-06 10.32 1979-09-06 10.04 1979-11-26 12.27 1980-03-21 14.3 1981-02-11 10.75 1981-02-20 12.44 1981-05-12 11.72 1982-04-03 10.71 1982-04-18 10.99 1983-04-16 11.67 1984-02-15 10.25 1984-04-05 11.95 1984-05-29 11.81 1985-09-27 10.16 1986-03-15 13.19 1987-04-04 14.2 1988-03-26 10.6 1989-05-06 10.74 1989-10-20 11.29 1990-11-10 13.15 1991-11-23 10.3 1993-04-11 10.81 1993-11-28 11.22 1994-04-07 10.07 1994-04-13 11.5 1995-10-21 11.75 1996-01-27 11.33 1996-11-09 14.79 1996-12-02 14.67 1998-01-08 10.88 1998-03-10 10.64 1999-01-24 12.33 1999-09-17 11.5 2003-09-04 11.33 2003-10-27 11.87 2003-10-29 11.59 2003-11-20 10.01 2003-12-11 10.01 2003-12-24 10.93 2004-08-13 10.01 2005-01-14 11.72 2005-03-29 10.42 2005-10-08 10.03 2005-11-30 10.34 2006-01-18 12.41 2006-06-26 12.05 2007-04-16 11.46 2008-03-05 10.55 2008-03-08 10.82 2008-07-23 12.43 2008-12-12 12.07 2009-07-30 10.61 2010-01-25 10.78 2010-03-23 11.64 2010-10-01 15.69 2010-12-01 12.29 2011-03-07 11.37 2011-03-11 13.07 2011-08-28 15.6 2011-09-07 13.64 2011-09-08 11.39 2012-05-15 12.26 2012-09-18 14.58 2013-03-12 10.18

MODERATE FLOODS Date of Flood Crest(ft) 1933-08-24 17.8 1951-03-31 16.02 1996-01-19 17.79 2000-12-17 16.34 2004-09-18 17.67

MAJOR FLOODS Date of Flood Crest(ft) 2005-04-03 18.98 2006-06-28 20.55

MISSING Date of Flood Crest(ft) 1926-11-16 -9999

Categorical Floods by Month Month Minor After Datum Minor Total Moderate After Datum Moderate Total Major After Datum Major Total Missing After Datum Missing Total January 10 10 1 1 0 0 0 0 February 4 4 0 0 0 0 0 0 March 20 23 1 1 0 0 0 0 April 15 16 0 0 1 1 0 0 May 4 4 0 0 0 0 0 0 June 2 2 0 0 1 1 0 0 July 5 5 0 0 0 0 0 0 August 4 4 0 1 0 0 0 0 September 9 10 1 1 0 0 0 0 October 12 14 0 0 0 0 0 0 November 12 13 0 0 0 0 0 1 December 15 16 1 1 0 0 0 0

Categorical Floods by Season Season Minor Moderate Major Missing Fall 37 1 0 1 Winter 30 2 0 0 Spring 43 1 1 0 Summer 11 1 1 0

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: 09:54 PM Mar 12, 2013