Cohocton River near Campbell, Steuben County NY (CMPN6)
Gage Location: Steuben County, New York	Site Location: Steuben County, New York
Latitude: 42.253	Longitude: -77.217	Elevation: 1016.34 ft. MSL	Drainage Area: 470 Sq. Mi.
Minor Stage: 8 ft.	Moderate Stage: 10 ft.	Major Stage: 11 ft.
First Flood: 1927-12-01	Last Flood: 2004-09-09 Crest: 8.09 ft.	Datum change: 1937-03-05	Number of Floods: 20

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Date of Flood Crest(ft) Streamflow(cfs) Category Code 1927-12-01 9.5 19700 Minor C1 1935-07-08 11.6 41100 Major C1 F2 1936-03-12 8.8 16200 Minor C1 F2 1939-02-20 8.15 10600 Minor C5 F2 1940-04-01 8.15 12000 Minor F2 1942-03-17 8.09 11700 Minor F2 1947-06-03 8.1 11700 Minor F2 1950-03-29 8.38 13000 Minor F2 1956-03-07 8.79 14900 Minor F2 1957-01-23 8.14 -9999 Minor F2 1961-04-25 8.03 11200 Minor F2 1963-03-18 9.35 -9999 Minor F2 1964-03-05 8.45 13200 Minor F2 1972-06-21 10.86 27400 Moderate F2 1972-06-23 11.16 32000 Major F2 1975-09-26 10.33 22700 Moderate F2 1976-02-16 8.21 11600 Minor F2 1981-02-18 8.03 -9999 Minor F2 1996-01-19 9.55 18300 Minor F2 2004-09-09 8.09 12200 Minor F2

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