North Branch Potomac River near Cumberland, Allegany County MD (CBEM2)
Gage Location: Allegany County, MarylandSite Location: Allegany County, Maryland
Latitude: 39.622Longitude: -78.773Elevation: 585.22 ft. MSLDrainage Area: 877 Sq. Mi.
Minor Stage: 17 ft. Moderate Stage: 21 ft.Major Stage: 23 ft.
First Flood: 1889-06-01Last Flood: 2010-03-13 Crest: 17.46 ft.Datum change: 1929-06-18Number of Floods: 29

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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
17 ft to 18 ft1344.817 ft or above 29100.0
18 ft to 19 ft310.318 ft or above 1655.2
19 ft to 20 ft310.319 ft or above 1344.8
20 ft to 21 ft00.020 ft or above 1034.5
21 ft to 22 ft00.021 ft or above 1034.5
22 ft to 23 ft26.922 ft or above 1034.5
23 ft to 24 ft13.423 ft or above 827.6
24 ft to 25 ft26.924 ft or above 724.1
25 ft to 26 ft26.925 ft or above 517.2
26 ft to 27 ft00.026 ft or above 310.3
27 ft to 28 ft00.027 ft or above 310.3
28 ft to 29 ft13.428 ft or above 310.3
29 ft to 30 ft26.929 ft or above 26.9
Height Above Flood Stage After Datum Change
Height Above FSTotal OccurencePercent of Crest OccurrenceCumulative Total Flood OccurrencePercent of Floods above Listed Value
17 ft to 18 ft1348.117 ft or above 27100.0
18 ft to 19 ft311.118 ft or above 1451.9
19 ft to 20 ft311.119 ft or above 1140.7
20 ft to 21 ft00.020 ft or above 829.6
21 ft to 22 ft00.021 ft or above 829.6
22 ft to 23 ft27.422 ft or above 829.6
23 ft to 24 ft13.723 ft or above 622.2
24 ft to 25 ft27.424 ft or above 518.5
25 ft to 26 ft27.425 ft or above 311.1
26 ft to 27 ft00.026 ft or above 13.7
27 ft to 28 ft00.027 ft or above 13.7
28 ft to 29 ft00.028 ft or above 13.7
29 ft to 30 ft13.729 ft or above 13.7