Potomac River near Washington DC Little Falls pump station, Montgomery County MD (BRKM2)
Gage Location: Montgomery County, MarylandSite Location: Montgomery County, Maryland
Latitude: 38.949Longitude: -77.128Elevation: 37.95 ft. MSLDrainage Area: 11560 Sq. Mi.
Minor Stage: 10 ft. Moderate Stage: 12 ft.Major Stage: 14 ft.
First Flood: 1932-05-14Last Flood: 2012-10-31 Crest: 10.33 ft.Datum change: 1930-03-01Number of Floods: 91

Click on table headers to sort
Height Above Flood Stage for Entire Period of Record
Height Above FSTotal OccurencePercent of Crest OccurrenceCumulative Total Flood OccurrencePercent of Floods above Listed Value
10 ft to 11 ft3134.110 ft or above 91100.0
11 ft to 12 ft1920.911 ft or above 6065.9
12 ft to 13 ft1213.212 ft or above 4145.1
13 ft to 14 ft1718.713 ft or above 2931.9
14 ft to 15 ft22.214 ft or above 1213.2
15 ft to 16 ft22.215 ft or above 1011.0
16 ft to 17 ft00.016 ft or above 88.8
17 ft to 18 ft33.317 ft or above 88.8
18 ft to 19 ft00.018 ft or above 55.5
19 ft to 20 ft11.119 ft or above 55.5
20 ft to 21 ft00.020 ft or above 44.4
21 ft to 22 ft00.021 ft or above 44.4
22 ft to 23 ft11.122 ft or above 44.4
23 ft to 24 ft11.123 ft or above 33.3
24 ft to 25 ft00.024 ft or above 22.2
25 ft to 26 ft00.025 ft or above 22.2
26 ft to 27 ft11.126 ft or above 22.2
27 ft to 28 ft00.027 ft or above 11.1
28 ft to 29 ft11.128 ft or above 11.1
Height Above Flood Stage After Datum Change
Height Above FSTotal OccurencePercent of Crest OccurrenceCumulative Total Flood OccurrencePercent of Floods above Listed Value
10 ft to 11 ft3134.110 ft or above 91100.0
11 ft to 12 ft1920.911 ft or above 6065.9
12 ft to 13 ft1213.212 ft or above 4145.1
13 ft to 14 ft1718.713 ft or above 2931.9
14 ft to 15 ft22.214 ft or above 1213.2
15 ft to 16 ft22.215 ft or above 1011.0
16 ft to 17 ft00.016 ft or above 88.8
17 ft to 18 ft33.317 ft or above 88.8
18 ft to 19 ft00.018 ft or above 55.5
19 ft to 20 ft11.119 ft or above 55.5
20 ft to 21 ft00.020 ft or above 44.4
21 ft to 22 ft00.021 ft or above 44.4
22 ft to 23 ft11.122 ft or above 44.4
23 ft to 24 ft11.123 ft or above 33.3
24 ft to 25 ft00.024 ft or above 22.2
25 ft to 26 ft00.025 ft or above 22.2
26 ft to 27 ft11.126 ft or above 22.2
27 ft to 28 ft00.027 ft or above 11.1
28 ft to 29 ft11.128 ft or above 11.1