East Branch Delaware River at Harvard, Delaware County NY (HVDN6)
Gage Location: Delaware County, New YorkSite Location: Delaware County, New York
Latitude: 42.025Longitude: -75.12Elevation: 1007.41 ft. MSLDrainage Area: 458 Sq. Mi.
Minor Stage: 10 ft. Moderate Stage: 12 ft.Major Stage: 15 ft.
First Flood: 1903-10-09Last Flood: 2011-09-07 Crest: 14.73 ft.Datum change: 1977-11-01Number of Floods: 29

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Date of FloodCrest(ft)Streamflow(cfs)CategoryCode
1903-10-09-999942000MissingC1 F1
1936-03-1815.5826200MajorC1 G1
1938-09-2216.9331400MajorC1 G1
1938-12-0611.511100MinorC1 G1
1940-03-3115.0123100MajorC1 G1
1942-05-2314.6221600ModerateC1 G1
1942-12-31-999917400MissingC1 G1
1945-02-2712.7414800ModerateC1 G1
1946-01-0610.839350MinorC1 G1
1948-03-2215.7527000MajorC1 G1
1948-12-3114.4721400ModerateC1 G1
1950-04-0511.1710200MinorC1 G1
1950-11-2615.6926800MajorC1 G1
1952-04-0610.819350MinorC1 G1
1952-12-1213.9617800ModerateC1 G1
1960-04-0510.6511200MinorC1 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: 08:00 PM May 28, 2014