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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Height Above Flood Stage for Entire Period of Record
Height Above FSTotal OccurencePercent of Crest OccurrenceCumulative Total Flood OccurrencePercent of Floods above Listed Value
18 ft to 19 ft1128.218 ft or above 39100.0
19 ft to 20 ft410.319 ft or above 2871.8
20 ft to 21 ft410.320 ft or above 2461.5
21 ft to 22 ft37.721 ft or above 2051.3
22 ft to 23 ft37.722 ft or above 1743.6
23 ft to 24 ft12.623 ft or above 1435.9
24 ft to 25 ft12.624 ft or above 1333.3
25 ft to 26 ft25.125 ft or above 1230.8
26 ft to 27 ft410.326 ft or above 1025.6
27 ft to 28 ft12.627 ft or above 615.4
28 ft to 29 ft25.128 ft or above 512.8
29 ft to 30 ft12.629 ft or above 37.7
30 ft to 31 ft00.030 ft or above 25.1
31 ft to 32 ft00.031 ft or above 25.1
32 ft to 33 ft12.632 ft or above 25.1
33 ft to 34 ft00.033 ft or above 12.6
34 ft to 35 ft12.634 ft or above 12.6
Height Above Flood Stage After Datum Change
Height Above FSTotal OccurencePercent of Crest OccurrenceCumulative Total Flood OccurrencePercent of Floods above Listed Value
18 ft to 19 ft1134.418 ft or above 32100.0
19 ft to 20 ft39.419 ft or above 2165.6
20 ft to 21 ft412.520 ft or above 1856.2
21 ft to 22 ft39.421 ft or above 1443.8
22 ft to 23 ft13.122 ft or above 1134.4
23 ft to 24 ft13.123 ft or above 1031.2
24 ft to 25 ft13.124 ft or above 928.1
25 ft to 26 ft26.225 ft or above 825.0
26 ft to 27 ft39.426 ft or above 618.8
27 ft to 28 ft13.127 ft or above 39.4
28 ft to 29 ft13.128 ft or above 26.2
29 ft to 30 ft00.029 ft or above 13.1
30 ft to 31 ft00.030 ft or above 13.1
31 ft to 32 ft00.031 ft or above 13.1
32 ft to 33 ft00.032 ft or above 13.1
33 ft to 34 ft00.033 ft or above 13.1
34 ft to 35 ft13.134 ft or above 13.1