Susquehanna River at Marietta, Lancaster County PA (MRTP1)
Gage Location: Lancaster County, PennsylvaniaSite Location: Lancaster County, Pennsylvania
Latitude: 40.054Longitude: -76.531Elevation: 200.56 ft. MSLDrainage Area: 25990 Sq. Mi.
Minor Stage: 49 ft. Moderate Stage: 52 ft.Major Stage: 54 ft.
First Flood: 1889-06-02Last Flood: 2011-09-09 Crest: 58.16 ft.Datum change: 1931-10-01Number of Floods: 36

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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
49 ft to 50 ft719.449 ft or above 36100.0
50 ft to 51 ft616.750 ft or above 2980.6
51 ft to 52 ft616.751 ft or above 2363.9
52 ft to 53 ft38.352 ft or above 1747.2
53 ft to 54 ft513.953 ft or above 1438.9
54 ft to 55 ft25.654 ft or above 925.0
55 ft to 56 ft12.855 ft or above 719.4
56 ft to 57 ft25.656 ft or above 616.7
57 ft to 58 ft00.057 ft or above 411.1
58 ft to 59 ft25.658 ft or above 411.1
59 ft to 60 ft00.059 ft or above 25.6
60 ft to 61 ft12.860 ft or above 25.6
61 ft to 62 ft00.061 ft or above 12.8
62 ft to 63 ft00.062 ft or above 12.8
63 ft to 64 ft00.063 ft or above 12.8
64 ft to 65 ft12.864 ft or above 12.8
Height Above Flood Stage After Datum Change
Height Above FSTotal OccurencePercent of Crest OccurrenceCumulative Total Flood OccurrencePercent of Floods above Listed Value
49 ft to 50 ft720.049 ft or above 35100.0
50 ft to 51 ft617.150 ft or above 2880.0
51 ft to 52 ft617.151 ft or above 2262.9
52 ft to 53 ft38.652 ft or above 1645.7
53 ft to 54 ft514.353 ft or above 1337.1
54 ft to 55 ft25.754 ft or above 822.9
55 ft to 56 ft12.955 ft or above 617.1
56 ft to 57 ft25.756 ft or above 514.3
57 ft to 58 ft00.057 ft or above 38.6
58 ft to 59 ft12.958 ft or above 38.6
59 ft to 60 ft00.059 ft or above 25.7
60 ft to 61 ft12.960 ft or above 25.7
61 ft to 62 ft00.061 ft or above 12.9
62 ft to 63 ft00.062 ft or above 12.9
63 ft to 64 ft00.063 ft or above 12.9
64 ft to 65 ft12.964 ft or above 12.9