Chemung River at Elmira, Chemung County NY (CHEN6)
Gage Location: Chemung County, New YorkSite Location: Chemung County, New York
Latitude: 42.086Longitude: -76.801Elevation: 833.65 ft. MSLDrainage Area: 2162 Sq. Mi.
Minor Stage: 12 ft. Moderate Stage: 15 ft.Major Stage: 19 ft.
First Flood: 1889-06-01Last Flood: 2007-03-15 Crest: 13.17 ft.Datum change: 1987-10-19Number of Floods: 33

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Date of FloodCrest(ft)Streamflow(cfs)CategoryCode
1889-06-01-9999138000MissingC1 F1
1935-07-0918.3-9999ModerateC1
1940-04-0117.8-9999ModerateC1
1942-03-1015.9-9999ModerateC1
1942-12-3117.4-9999ModerateC1
1946-05-2821.2-9999MajorC1
1947-04-0615.8-9999ModerateC1
1948-05-2215.3-9999ModerateC1
1950-05-2916.1-9999ModerateC1
1950-11-2616.4-9999ModerateC1
1951-03-3116.6-9999ModerateC1
1953-03-2514.1-9999MinorC1
1954-03-0212.9-9999MinorC1
1955-10-1517.2-9999ModerateC1
1956-03-0716.1-9999ModerateC1
1960-04-0114.5-9999MinorC1
1964-03-0615.6-9999ModerateC1
1972-06-2325.2235000MajorC1 C4 C7
1975-09-2619.7-9999MajorC1 C4
1989-05-1112.0630800MinorF2
1990-10-2412.734200MinorC7 F1 F2
1993-04-0112.4332800MinorF2
1994-03-2514.0641600MinorF2
1996-01-2018.5171000ModerateC5 F1 F2 F3
1996-11-0815.952800ModerateF2
1998-01-0813.1836700MinorF2
2003-07-2312.2337400MinorF2
2004-09-0912.85-9999MinorF2
2004-09-1813.5945100MinorF2
2005-04-0313.1742600MinorF2
2005-11-3012.4738700MinorF2
2006-09-0312.19-9999MinorF2
2007-03-1513.1742600MinorF2



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