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

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Height Above Flood Stage for Entire Period of Record Height Above FS Total Occurence Percent of Crest Occurrence Cumulative Total Flood Occurrence Percent of Floods above Listed Value 49 ft to 50 ft 7 19.4 49 ft or above 36 100.0 50 ft to 51 ft 6 16.7 50 ft or above 29 80.6 51 ft to 52 ft 6 16.7 51 ft or above 23 63.9 52 ft to 53 ft 3 8.3 52 ft or above 17 47.2 53 ft to 54 ft 5 13.9 53 ft or above 14 38.9 54 ft to 55 ft 2 5.6 54 ft or above 9 25.0 55 ft to 56 ft 1 2.8 55 ft or above 7 19.4 56 ft to 57 ft 2 5.6 56 ft or above 6 16.7 57 ft to 58 ft 0 0.0 57 ft or above 4 11.1 58 ft to 59 ft 2 5.6 58 ft or above 4 11.1 59 ft to 60 ft 0 0.0 59 ft or above 2 5.6 60 ft to 61 ft 1 2.8 60 ft or above 2 5.6 61 ft to 62 ft 0 0.0 61 ft or above 1 2.8 62 ft to 63 ft 0 0.0 62 ft or above 1 2.8 63 ft to 64 ft 0 0.0 63 ft or above 1 2.8 64 ft to 65 ft 1 2.8 64 ft or above 1 2.8

Height Above Flood Stage After Datum Change Height Above FS Total Occurence Percent of Crest Occurrence Cumulative Total Flood Occurrence Percent of Floods above Listed Value 49 ft to 50 ft 7 20.0 49 ft or above 35 100.0 50 ft to 51 ft 6 17.1 50 ft or above 28 80.0 51 ft to 52 ft 6 17.1 51 ft or above 22 62.9 52 ft to 53 ft 3 8.6 52 ft or above 16 45.7 53 ft to 54 ft 5 14.3 53 ft or above 13 37.1 54 ft to 55 ft 2 5.7 54 ft or above 8 22.9 55 ft to 56 ft 1 2.9 55 ft or above 6 17.1 56 ft to 57 ft 2 5.7 56 ft or above 5 14.3 57 ft to 58 ft 0 0.0 57 ft or above 3 8.6 58 ft to 59 ft 1 2.9 58 ft or above 3 8.6 59 ft to 60 ft 0 0.0 59 ft or above 2 5.7 60 ft to 61 ft 1 2.9 60 ft or above 2 5.7 61 ft to 62 ft 0 0.0 61 ft or above 1 2.9 62 ft to 63 ft 0 0.0 62 ft or above 1 2.9 63 ft to 64 ft 0 0.0 63 ft or above 1 2.9 64 ft to 65 ft 1 2.9 64 ft or above 1 2.9