Susquehanna River at Harrisburg, Dauphin County PA (HARP1)
Gage Location: Dauphin County, PennsylvaniaSite Location: Dauphin County, Pennsylvania
Latitude: 40.255Longitude: -76.886Elevation: 290.01 ft. MSLDrainage Area: 24100 Sq. Mi.
Minor Stage: 17 ft. Moderate Stage: 20 ft.Major Stage: 23 ft.
First Flood: 1786-10-05Last Flood: 2011-09-09 Crest: 25.17 ft.Datum change: 1928-10-01Number of Floods: 48

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MINOR FLOODS
Date of FloodCrest(ft)
1886-01-0619.02
1891-02-1919.7
1910-03-0317.2
1913-03-2819.54
1914-03-3018.1
1916-03-2918.8
1924-04-0817
1925-02-1318.8
1926-11-1717
1940-04-0219.75
1943-01-0119.4
1950-11-2719.34
1960-04-0218.2
1961-02-2718.48
1971-02-1618.03
1975-02-2618.19
1982-02-0517.64
1983-12-1517.55
1984-04-0718.88
1986-03-1618.53
1994-03-2617.9
1998-01-1017.27
2005-03-3017.43
2005-04-0418.87
2006-06-2919.66
2008-03-0617.4
2011-04-2918.37
MODERATE FLOODS
Date of FloodCrest(ft)
1846-03-1522
1868-03-1920
1902-03-0322.94
1904-03-0820.84
1920-03-1320.2
1946-05-2921.8
1964-03-1221.51
1979-03-0720.43
1984-02-1620.74
1993-04-0220.5
2011-03-1220.09
MAJOR FLOODS
Date of FloodCrest(ft)
1865-03-1824.6
1889-06-0226.8
1894-05-2225.7
1936-03-1929.23
1972-06-2433.27
1975-09-2723.82
1996-01-2025.08
2004-09-1924.4
2011-09-0925.17
MISSING
Date of FloodCrest(ft)
1786-10-05-9999



Categorical Floods by Month
MonthMinor
After
Datum
Minor
Total
Moderate
After
Datum
Moderate
Total
Major
After
Datum
Major
Total
Missing
After
Datum
Missing
Total
January23001100
February46110000
March48381200
April56110000
May00110100
June11001200
July00000000
August00000000
September00003300
October00000001
November12000000
December11000000


Categorical Floods by Season
SeasonMinorModerateMajorMissing
Fall2031
Winter10110
Spring141030
Summer1020