Unadilla River at Rockdale, Chenango County NY (RCKN6)
Gage Location: Chenango County, New York	Site Location: Chenango County, New York
Latitude: 42.378	Longitude: -75.406	Elevation: 992.25 ft. MSL	Drainage Area: 520 Sq. Mi.
Minor Stage: 11 ft.	Moderate Stage: 12 ft.	Major Stage: 13 ft.
First Flood: 1932-10-07	Last Flood: 2011-09-08 Crest: 14.22 ft.	Datum change: 1937-01-29	Number of Floods: 31

Click on table headers to sort

Year Before Datum Change	Number of Floods
1932	1
1933	0
1934	0
1935	0
1936	0

Year After Datum Change	Number of Floods
1937	0
1938	0
1939	0
1940	2
1941	0
1942	1
1943	1
1944	1
1945	0
1946	0
1947	0
1948	1
1949	0
1950	1
1951	0
1952	0
1953	0
1954	0
1955	0
1956	1
1957	0
1958	0
1959	1
1960	2
1961	1
1962	1
1963	1
1964	1
1965	0
1966	0
1967	0
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	2
1978	0
1979	1
1980	0
1981	0
1982	0
1983	1
1984	1
1985	0
1986	1
1987	0
1988	0
1989	0
1990	0
1991	0
1992	0
1993	2
1994	0
1995	0
1996	1
1997	0
1998	1
1999	0
2000	1
2001	1
2002	0
2003	0
2004	0
2005	1
2006	1
2007	0
2008	0
2009	0
2010	0
2011	1
2012	0
2013	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: 08:09 AM Feb 08, 2013