Susquehanna River at Conowingo, Harford County MD (CNWM2)
Gage Location: Harford County, MarylandSite Location: Cecil County, Maryland
Latitude: 39.659Longitude: -76.174Elevation: 5 ft. MSLDrainage Area: 27100 Sq. Mi.
Minor Stage: 23.5 ft. Moderate Stage: 28 ft.Major Stage: 33 ft.
First Flood: 1970-02-04Last Flood: 2014-04-18 Crest: 27.8 ft.Datum change: 1967-10-01Number of Floods: 27

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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
23 ft to 24 ft27.423 ft or above 27100.0
24 ft to 25 ft518.524 ft or above 2592.6
25 ft to 26 ft518.525 ft or above 2074.1
26 ft to 27 ft414.826 ft or above 1555.6
27 ft to 28 ft311.127 ft or above 1140.7
28 ft to 29 ft311.128 ft or above 829.6
29 ft to 30 ft00.029 ft or above 518.5
30 ft to 31 ft27.430 ft or above 518.5
31 ft to 32 ft00.031 ft or above 311.1
32 ft to 33 ft13.732 ft or above 311.1
33 ft to 34 ft00.033 ft or above 27.4
34 ft to 35 ft13.734 ft or above 27.4
35 ft to 36 ft00.035 ft or above 13.7
36 ft to 37 ft13.736 ft or above 13.7
Height Above Flood Stage After Datum Change
Height Above FSTotal OccurencePercent of Crest OccurrenceCumulative Total Flood OccurrencePercent of Floods above Listed Value
23 ft to 24 ft27.423 ft or above 27100.0
24 ft to 25 ft518.524 ft or above 2592.6
25 ft to 26 ft518.525 ft or above 2074.1
26 ft to 27 ft414.826 ft or above 1555.6
27 ft to 28 ft311.127 ft or above 1140.7
28 ft to 29 ft311.128 ft or above 829.6
29 ft to 30 ft00.029 ft or above 518.5
30 ft to 31 ft27.430 ft or above 518.5
31 ft to 32 ft00.031 ft or above 311.1
32 ft to 33 ft13.732 ft or above 311.1
33 ft to 34 ft00.033 ft or above 27.4
34 ft to 35 ft13.734 ft or above 27.4
35 ft to 36 ft00.035 ft or above 13.7
36 ft to 37 ft13.736 ft or above 13.7