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

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MINOR FLOODS Date of Flood Crest(ft) 1938-12-06 11.5 1946-01-06 10.83 1950-04-05 11.17 1952-04-06 10.81 1960-04-05 10.65 1984-05-30 11.78 2003-12-25 10.1 2006-01-19 11.38 2008-03-06 10.87 2008-03-09 11.69 2010-03-24 10.29

MODERATE FLOODS Date of Flood Crest(ft) 1942-05-23 14.62 1945-02-27 12.74 1948-12-31 14.47 1952-12-12 13.96 1996-01-19 12.63 1996-12-02 12.79 2011-08-29 13.31 2011-09-07 14.73

MAJOR FLOODS Date of Flood Crest(ft) 1936-03-18 15.58 1938-09-22 16.93 1940-03-31 15.01 1948-03-22 15.75 1950-11-26 15.69 2004-09-18 16.07 2005-04-03 16.32 2006-06-28 16.61

MISSING Date of Flood Crest(ft) 1903-10-09 -9999 1942-12-31 -9999

Categorical Floods by Month Month Minor After Datum Minor Total Moderate After Datum Moderate Total Major After Datum Major Total Missing After Datum Missing Total January 1 2 1 1 0 0 0 0 February 0 0 0 1 0 0 0 0 March 3 3 0 0 0 3 0 0 April 0 3 0 0 1 1 0 0 May 1 1 0 1 0 0 0 0 June 0 0 0 0 1 1 0 0 July 0 0 0 0 0 0 0 0 August 0 0 1 1 0 0 0 0 September 0 0 1 1 1 2 0 0 October 0 0 0 0 0 0 0 1 November 0 0 0 0 0 1 0 0 December 1 2 1 3 0 0 0 1

Categorical Floods by Season Season Minor Moderate Major Missing Fall 0 1 3 1 Winter 4 5 0 1 Spring 7 1 4 0 Summer 0 1 1 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