Potomac River at Harpers Ferry, Jefferson County WV (HFEW2)
Gage Location: Jefferson County, West VirginiaSite Location: Jefferson County, West Virginia
Latitude: 39.324Longitude: -77.728Elevation: 245.53 ft. MSLDrainage Area: 6313 Sq. Mi.
Minor Stage: 18 ft. Moderate Stage: 21 ft.Major Stage: 24 ft.
First Flood: 1877-11-25Last Flood: 2011-05-19 Crest: 19.14 ft.Datum change: 1986-12-01Number of Floods: 42

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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 ft1023.818 ft or above 42100.0
19 ft to 20 ft614.319 ft or above 3276.2
20 ft to 21 ft49.520 ft or above 2661.9
21 ft to 22 ft614.321 ft or above 2252.4
22 ft to 23 ft12.422 ft or above 1638.1
23 ft to 24 ft12.423 ft or above 1535.7
24 ft to 25 ft12.424 ft or above 1433.3
25 ft to 26 ft00.025 ft or above 1331.0
26 ft to 27 ft12.426 ft or above 1331.0
27 ft to 28 ft37.127 ft or above 1228.6
28 ft to 29 ft00.028 ft or above 921.4
29 ft to 30 ft49.529 ft or above 921.4
30 ft to 31 ft12.430 ft or above 511.9
31 ft to 32 ft00.031 ft or above 49.5
32 ft to 33 ft00.032 ft or above 49.5
33 ft to 34 ft24.833 ft or above 49.5
34 ft to 35 ft12.434 ft or above 24.8
35 ft to 36 ft00.035 ft or above 12.4
36 ft to 37 ft12.436 ft or above 12.4
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 ft114.318 ft or above 7100.0
19 ft to 20 ft228.619 ft or above 685.7
20 ft to 21 ft228.620 ft or above 457.1
21 ft to 22 ft00.021 ft or above 228.6
22 ft to 23 ft00.022 ft or above 228.6
23 ft to 24 ft00.023 ft or above 228.6
24 ft to 25 ft00.024 ft or above 228.6
25 ft to 26 ft00.025 ft or above 228.6
26 ft to 27 ft00.026 ft or above 228.6
27 ft to 28 ft00.027 ft or above 228.6
28 ft to 29 ft00.028 ft or above 228.6
29 ft to 30 ft228.629 ft or above 228.6
30 ft to 31 ft00.030 ft or above 00.0
31 ft to 32 ft00.031 ft or above 00.0
32 ft to 33 ft00.032 ft or above 00.0
33 ft to 34 ft00.033 ft or above 00.0
34 ft to 35 ft00.034 ft or above 00.0
35 ft to 36 ft00.035 ft or above 00.0
36 ft to 37 ft00.036 ft or above 00.0