West Branch Susquehanna River at Lewisburg, Northumberland County PA (LWBP1)
Gage Location: Northumberland County, Pennsylvania Site Location: Union County, Pennsylvania
Latitude: 40.968Longitude: -76.876Elevation: 428.2 ft. MSLDrainage Area: 6847 Sq. Mi.
Minor Stage: 18 ft. Moderate Stage: 23 ft.Major Stage: 28 ft.
First Flood: 1865-03-17Last Flood: 2011-09-08 Crest: 25.75 ft.Datum change: 1940-07-02Number of Floods: 39

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MINOR FLOODS
Date of FloodCrest(ft)
1902-03-0122.3
1909-05-0119.5
1940-04-0122.7
1942-05-2318.57
1942-12-3122.47
1948-04-1520.07
1950-03-3018.15
1952-03-1218.08
1954-03-0318.51
1956-03-0919.8
1956-11-0318.6
1959-01-2318.22
1960-04-0121
1961-02-2721.17
1981-02-2418.83
1982-02-0319.82
1986-03-1518.61
1993-04-0221.33
1994-03-2618.28
1998-01-0918.83
2005-04-0318.79
2010-01-2619.03
2010-12-0220.9
2011-03-1120.78
2011-04-2920.1
MODERATE FLOODS
Date of FloodCrest(ft)
1865-03-1726.5
1950-11-2626.05
1964-03-1126.16
1975-09-2727.62
1979-03-0623.44
1984-02-1524.26
1996-01-2025.94
2004-09-1926.01
2011-09-0825.75
MAJOR FLOODS
Date of FloodCrest(ft)
1889-06-0129.8
1894-05-2128.5
1936-03-1932.1
1946-05-2928.43
1972-06-2434.23
MISSING
Date of FloodCrest(ft)



Categorical Floods by Month
MonthMinor
After
Datum
Minor
Total
Moderate
After
Datum
Moderate
Total
Major
After
Datum
Major
Total
Missing
After
Datum
Missing
Total
January33110000
February33110000
March78230100
April56000000
May12001200
June00001200
July00000000
August00000000
September00330000
October00000000
November11110000
December22000000


Categorical Floods by Season
SeasonMinorModerateMajorMissing
Fall1400
Winter8200
Spring16330
Summer0020