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: 2014-05-16 Crest: 12.16 ft.Datum change: 1987-10-19Number of Floods: 34

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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
2014-05-1612.1637900MinorF2



Codes and description

C1|Crest information during this period may be incomplete and therefore was not used in frequency calculations. Some of the floods are based on current flood stage and nearby gage information.
C2|Crest information during this period 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: 01:25 PM Jul 21, 2014