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Hydrograph River at a Glance Download
Potomac River near Washington DC (Little Falls) Stage (ft)Flow (kcfs)Observed: 3.1 ft at 7:45PM Jul 26, 2014Observed: 3.1 ft at 8:00PM Jul 26, 2014Observed: 3.1 ft at 8:15PM Jul 26, 2014Observed: 3.1 ft at 8:30PM Jul 26, 2014Observed: 3.1 ft at 8:45PM Jul 26, 2014Observed: 3.09 ft at 9:00PM Jul 26, 2014Observed: 3.1 ft at 9:15PM Jul 26, 2014Observed: 3.1 ft at 9:30PM Jul 26, 2014Observed: 3.1 ft at 9:45PM Jul 26, 2014Observed: 3.09 ft at 10:00PM Jul 26, 2014Observed: 3.1 ft at 10:15PM Jul 26, 2014Observed: 3.1 ft at 10:30PM Jul 26, 2014Observed: 3.1 ft at 10:45PM Jul 26, 2014Observed: 3.1 ft at 11:00PM Jul 26, 2014Observed: 3.1 ft at 11:15PM Jul 26, 2014Observed: 3.09 ft at 11:30PM Jul 26, 2014Observed: 3.1 ft at 11:45PM Jul 26, 2014Observed: 3.1 ft at 12:00AM Jul 27, 2014Observed: 3.09 ft at 12:15AM Jul 27, 2014Observed: 3.09 ft at 12:30AM Jul 27, 2014Observed: 3.1 ft at 12:45AM Jul 27, 2014Observed: 3.09 ft at 1:00AM Jul 27, 2014Observed: 3.09 ft at 1:15AM Jul 27, 2014Observed: 3.08 ft at 1:30AM Jul 27, 2014Observed: 3.09 ft at 1:45AM Jul 27, 2014Observed: 3.09 ft at 2:00AM Jul 27, 2014Observed: 3.09 ft at 2:15AM Jul 27, 2014Observed: 3.09 ft at 2:30AM Jul 27, 2014Observed: 3.09 ft at 2:45AM Jul 27, 2014Observed: 3.08 ft at 3:00AM Jul 27, 2014Observed: 3.08 ft at 3:15AM Jul 27, 2014Observed: 3.08 ft at 3:30AM Jul 27, 2014Observed: 3.09 ft at 3:45AM Jul 27, 2014Observed: 3.09 ft at 4:00AM Jul 27, 2014Observed: 3.09 ft at 4:15AM Jul 27, 2014Observed: 3.09 ft at 4:30AM Jul 27, 2014Observed: 3.09 ft at 4:45AM Jul 27, 2014Observed: 3.09 ft at 5:00AM Jul 27, 2014Observed: 3.09 ft at 5:15AM Jul 27, 2014Observed: 3.09 ft at 5:30AM Jul 27, 2014Observed: 3.09 ft at 5:45AM Jul 27, 2014Observed: 3.08 ft at 6:00AM Jul 27, 2014Observed: 3.09 ft at 6:15AM Jul 27, 2014Observed: 3.09 ft at 6:30AM Jul 27, 2014Observed: 3.11 ft at 6:45AM Jul 27, 2014Observed: 3.09 ft at 7:00AM Jul 27, 2014Observed: 3.09 ft at 7:15AM Jul 27, 2014Observed: 3.1 ft at 7:30AM Jul 27, 2014Observed: 3.1 ft at 7:45AM Jul 27, 2014Observed: 3.09 ft at 8:00AM Jul 27, 2014Observed: 3.1 ft at 8:15AM Jul 27, 2014Observed: 3.1 ft at 8:30AM Jul 27, 2014Observed: 3.1 ft at 8:45AM Jul 27, 2014Observed: 3.1 ft at 9:00AM Jul 27, 2014Observed: 3.1 ft at 9:15AM Jul 27, 2014Observed: 3.1 ft at 9:30AM Jul 27, 2014Observed: 3.1 ft at 9:45AM Jul 27, 2014Observed: 3.09 ft at 10:00AM Jul 27, 2014Observed: 3.1 ft at 10:15AM Jul 27, 2014Observed: 3.09 ft at 10:30AM Jul 27, 2014Observed: 3.1 ft at 10:45AM Jul 27, 2014Observed: 3.1 ft at 11:00AM Jul 27, 2014Observed: 3.1 ft at 11:15AM Jul 27, 2014Observed: 3.1 ft at 11:30AM Jul 27, 2014Observed: 3.1 ft at 11:45AM Jul 27, 2014Observed: 3.1 ft at 12:00PM Jul 27, 2014Observed: 3.1 ft at 12:15PM Jul 27, 2014Observed: 3.1 ft at 12:30PM Jul 27, 2014Observed: 3.1 ft at 12:45PM Jul 27, 2014Observed: 3.1 ft at 1:00PM Jul 27, 2014Observed: 3.1 ft at 1:15PM Jul 27, 2014Observed: 3.1 ft at 1:30PM Jul 27, 2014Observed: 3.1 ft at 1:45PM Jul 27, 2014Observed: 3.09 ft at 2:00PM Jul 27, 2014Observed: 3.09 ft at 2:15PM Jul 27, 2014Observed: 3.08 ft at 2:30PM Jul 27, 2014Observed: 3.08 ft at 2:45PM Jul 27, 2014Observed: 3.08 ft at 3:00PM Jul 27, 2014Observed: 3.08 ft at 3:15PM Jul 27, 2014Observed: 3.08 ft at 3:30PM Jul 27, 2014Observed: 3.08 ft at 3:45PM Jul 27, 2014Observed: 3.07 ft at 4:00PM Jul 27, 2014Observed: 3.08 ft at 4:15PM Jul 27, 2014Observed: 3.08 ft at 4:30PM Jul 27, 2014Observed: 3.08 ft at 4:45PM Jul 27, 2014Observed: 3.08 ft at 5:00PM Jul 27, 2014Observed: 3.08 ft at 5:15PM Jul 27, 2014Observed: 3.08 ft at 5:30PM Jul 27, 2014Observed: 3.09 ft at 5:45PM Jul 27, 2014Observed: 3.08 ft at 6:00PM Jul 27, 2014Observed: 3.08 ft at 6:15PM Jul 27, 2014Observed: 3.08 ft at 6:30PM Jul 27, 2014Observed: 3.08 ft at 6:45PM Jul 27, 2014Observed: 3.09 ft at 7:00PM Jul 27, 2014Observed: 3.09 ft at 7:15PM Jul 27, 2014Observed: 3.09 ft at 7:30PM Jul 27, 2014Observed: 3.09 ft at 7:45PM Jul 27, 2014Observed: 3.08 ft at 8:00PM Jul 27, 2014Observed: 3.09 ft at 8:15PM Jul 27, 2014Observed: 3.09 ft at 8:30PM Jul 27, 2014Observed: 3.08 ft at 8:45PM Jul 27, 2014Observed: 3.08 ft at 9:00PM Jul 27, 2014Observed: 3.09 ft at 9:15PM Jul 27, 2014Observed: 3.09 ft at 9:30PM Jul 27, 2014Observed: 3.08 ft at 9:45PM Jul 27, 2014Observed: 3.09 ft at 10:00PM Jul 27, 2014Observed: 3.09 ft at 10:15PM Jul 27, 2014Observed: 3.09 ft at 10:30PM Jul 27, 2014Observed: 3.09 ft at 10:45PM Jul 27, 2014Observed: 3.09 ft at 11:00PM Jul 27, 2014Observed: 3.09 ft at 11:15PM Jul 27, 2014Observed: 3.09 ft at 11:30PM Jul 27, 2014Observed: 3.09 ft at 11:45PM Jul 27, 2014Observed: 3.09 ft at 12:00AM Jul 28, 2014Observed: 3.09 ft at 12:15AM Jul 28, 2014Observed: 3.08 ft at 12:30AM Jul 28, 2014Observed: 3.09 ft at 12:45AM Jul 28, 2014Observed: 3.09 ft at 1:00AM Jul 28, 2014Observed: 3.09 ft at 1:15AM Jul 28, 2014Observed: 3.09 ft at 1:30AM Jul 28, 2014Observed: 3.09 ft at 1:45AM Jul 28, 2014Observed: 3.09 ft at 2:00AM Jul 28, 2014Observed: 3.09 ft at 2:15AM Jul 28, 2014Observed: 3.08 ft at 2:30AM Jul 28, 2014Observed: 3.08 ft at 2:45AM Jul 28, 2014Observed: 3.07 ft at 3:00AM Jul 28, 2014Observed: 3.07 ft at 3:15AM Jul 28, 2014Observed: 3.08 ft at 3:30AM Jul 28, 2014Observed: 3.08 ft at 3:45AM Jul 28, 2014Observed: 3.07 ft at 4:00AM Jul 28, 2014Observed: 3.07 ft at 4:15AM Jul 28, 2014Observed: 3.07 ft at 4:30AM Jul 28, 2014Observed: 3.07 ft at 4:45AM Jul 28, 2014Observed: 3.07 ft at 5:00AM Jul 28, 2014Observed: 3.07 ft at 5:15AM Jul 28, 2014Observed: 3.07 ft at 5:30AM Jul 28, 2014Observed: 3.07 ft at 5:45AM Jul 28, 2014Observed: 3.07 ft at 6:00AM Jul 28, 2014Observed: 3.06 ft at 6:15AM Jul 28, 2014Observed: 3.06 ft at 6:30AM Jul 28, 2014Observed: 3.07 ft at 6:45AM Jul 28, 2014Observed: 3.06 ft at 7:00AM Jul 28, 2014Observed: 3.06 ft at 7:15AM Jul 28, 2014Observed: 3.06 ft at 7:30AM Jul 28, 2014Observed: 3.06 ft at 7:45AM Jul 28, 2014Observed: 3.06 ft at 8:00AM Jul 28, 2014Observed: 3.06 ft at 8:15AM Jul 28, 2014Observed: 3.06 ft at 8:30AM Jul 28, 2014Observed: 3.05 ft at 8:45AM Jul 28, 2014Observed: 3.05 ft at 9:00AM Jul 28, 2014Observed: 3.05 ft at 9:15AM Jul 28, 2014Observed: 3.04 ft at 9:30AM Jul 28, 2014Observed: 3.01 ft at 9:45AM Jul 28, 2014Observed: 3.1 ft at 10:00AM Jul 28, 2014Observed: 3.06 ft at 10:15AM Jul 28, 2014Observed: 3.04 ft at 10:30AM Jul 28, 2014Observed: 3.08 ft at 10:45AM Jul 28, 2014Observed: 3.04 ft at 11:00AM Jul 28, 2014Observed: 3.04 ft at 11:15AM Jul 28, 2014Observed: 3.05 ft at 11:30AM Jul 28, 2014Observed: 3.05 ft at 11:45AM Jul 28, 2014Observed: 3.04 ft at 12:00PM Jul 28, 2014Observed: 3.06 ft at 12:15PM Jul 28, 2014Observed: 3.05 ft at 12:30PM Jul 28, 2014Observed: 3.05 ft at 12:45PM Jul 28, 2014Observed: 3.05 ft at 1:00PM Jul 28, 2014Observed: 3.06 ft at 1:15PM Jul 28, 2014Observed: 3.05 ft at 1:30PM Jul 28, 2014Observed: 3.04 ft at 1:45PM Jul 28, 2014Observed: 3.06 ft at 2:00PM Jul 28, 2014Observed: 3.04 ft at 2:15PM Jul 28, 2014Observed: 3.06 ft at 2:30PM Jul 28, 2014Observed: 3.06 ft at 2:45PM Jul 28, 2014Observed: 3.05 ft at 3:00PM Jul 28, 2014Observed: 3.06 ft at 3:15PM Jul 28, 2014Observed: 3.08 ft at 3:30PM Jul 28, 2014Observed: 3.05 ft at 3:45PM Jul 28, 2014Observed: 3.06 ft at 4:00PM Jul 28, 2014Observed: 3.08 ft at 4:15PM Jul 28, 2014Observed: 3.05 ft at 4:30PM Jul 28, 2014Observed: 3.05 ft at 4:45PM Jul 28, 2014Observed: 3.06 ft at 5:00PM Jul 28, 2014Observed: 3.06 ft at 5:15PM Jul 28, 2014Observed: 3.04 ft at 5:30PM Jul 28, 2014Observed: 3.05 ft at 5:45PM Jul 28, 2014Observed: 3.05 ft at 6:00PM Jul 28, 2014Observed: 3.06 ft at 6:15PM Jul 28, 2014Observed: 3.05 ft at 6:30PM Jul 28, 2014Observed: 3.03 ft at 6:45PM Jul 28, 2014Observed: 3.06 ft at 7:00PM Jul 28, 2014Observed: 3.06 ft at 7:15PM Jul 28, 2014Observed: 3.05 ft at 7:30PM Jul 28, 2014Observed: 3.06 ft at 7:45PM Jul 28, 2014Observed: 3.06 ft at 8:00PM Jul 28, 2014Observed: 3.05 ft at 8:15PM Jul 28, 2014Observed: 3.06 ft at 8:30PM Jul 28, 2014Observed: 3.03 ft at 8:45PM Jul 28, 2014Observed: 3.04 ft at 9:00PM Jul 28, 2014Observed: 3.04 ft at 9:15PM Jul 28, 2014Observed: 3.05 ft at 9:30PM Jul 28, 2014Observed: 3.05 ft at 9:45PM Jul 28, 2014Observed: 3.05 ft at 10:00PM Jul 28, 2014Observed: 3.05 ft at 10:15PM Jul 28, 2014Observed: 3.05 ft at 10:30PM Jul 28, 2014Observed: 3.05 ft at 10:45PM Jul 28, 2014Observed: 3.05 ft at 11:00PM Jul 28, 2014Observed: 3.05 ft at 11:15PM Jul 28, 2014Observed: 3.04 ft at 11:30PM Jul 28, 2014Observed: 3.05 ft at 11:45PM Jul 28, 2014Observed: 3.05 ft at 12:00AM Jul 29, 2014Observed: 3.04 ft at 12:15AM Jul 29, 2014Observed: 3.05 ft at 12:30AM Jul 29, 2014Observed: 3.04 ft at 12:45AM Jul 29, 2014Observed: 3.04 ft at 1:00AM Jul 29, 2014Observed: 3.04 ft at 1:15AM Jul 29, 2014Observed: 3.04 ft at 1:30AM Jul 29, 2014Observed: 3.03 ft at 1:45AM Jul 29, 2014Observed: 3.03 ft at 2:00AM Jul 29, 2014Observed: 3.04 ft at 2:15AM Jul 29, 2014Observed: 3.03 ft at 2:30AM Jul 29, 2014Observed: 3.03 ft at 2:45AM Jul 29, 2014Observed: 3.03 ft at 3:00AM Jul 29, 2014Observed: 3.03 ft at 3:15AM Jul 29, 2014Observed: 3.03 ft at 3:30AM Jul 29, 2014Observed: 3.03 ft at 3:45AM Jul 29, 2014Observed: 3.02 ft at 4:00AM Jul 29, 2014Observed: 3.03 ft at 4:15AM Jul 29, 2014Observed: 3.02 ft at 4:30AM Jul 29, 2014Observed: 3.03 ft at 4:45AM Jul 29, 2014Observed: 3.03 ft at 5:00AM Jul 29, 2014Observed: 3.03 ft at 5:15AM Jul 29, 2014Observed: 3.02 ft at 5:30AM Jul 29, 2014Observed: 3.03 ft at 5:45AM Jul 29, 2014Observed: 3.02 ft at 6:00AM Jul 29, 2014Observed: 3.02 ft at 6:15AM Jul 29, 2014Observed: 3.02 ft at 6:30AM Jul 29, 2014Observed: 3.02 ft at 6:45AM Jul 29, 2014Observed: 3.03 ft at 7:00AM Jul 29, 2014Observed: 3.03 ft at 7:15AM Jul 29, 2014Observed: 3.02 ft at 7:30AM Jul 29, 2014Observed: 3.03 ft at 7:45AM Jul 29, 2014Observed: 3.03 ft at 8:00AM Jul 29, 2014Observed: 3.03 ft at 8:15AM Jul 29, 2014Observed: 3.03 ft at 8:30AM Jul 29, 2014Observed: 3.03 ft at 8:45AM Jul 29, 2014Observed: 3.04 ft at 9:00AM Jul 29, 2014Observed: 3.04 ft at 9:15AM Jul 29, 2014Observed: 3.04 ft at 9:30AM Jul 29, 2014Observed: 3.03 ft at 9:45AM Jul 29, 2014Observed: 3.03 ft at 10:00AM Jul 29, 2014Observed: 3.03 ft at 10:15AM Jul 29, 2014Observed: 3.03 ft at 10:30AM Jul 29, 2014Observed: 3.02 ft at 10:45AM Jul 29, 2014Observed: 3.04 ft at 11:00AM Jul 29, 2014Observed: 3.02 ft at 11:15AM Jul 29, 2014Observed: 3.04 ft at 11:30AM Jul 29, 2014Observed: 3.04 ft at 11:45AM Jul 29, 2014Observed: 3.05 ft at 12:00PM Jul 29, 2014Observed: 3.03 ft at 12:15PM Jul 29, 2014Observed: 3.03 ft at 12:30PM Jul 29, 2014Observed: 3.04 ft at 12:45PM Jul 29, 2014Observed: 3.04 ft at 1:00PM Jul 29, 2014Observed: 3.04 ft at 1:15PM Jul 29, 2014Observed: 3.04 ft at 1:30PM Jul 29, 2014Observed: 3.04 ft at 1:45PM Jul 29, 2014Observed: 3.05 ft at 2:00PM Jul 29, 2014Observed: 3.08 ft at 2:15PM Jul 29, 2014Observed: 3.06 ft at 2:30PM Jul 29, 2014Observed: 3.07 ft at 2:45PM Jul 29, 2014Observed: 3.06 ft at 3:00PM Jul 29, 2014Observed: 3.07 ft at 3:15PM Jul 29, 2014Observed: 3.07 ft at 3:30PM Jul 29, 2014Observed: 3.06 ft at 3:45PM Jul 29, 2014Observed: 3.07 ft at 4:00PM Jul 29, 2014Observed: 3.07 ft at 4:15PM Jul 29, 2014Observed: 3.07 ft at 4:30PM Jul 29, 2014Observed: 3.07 ft at 4:45PM Jul 29, 2014Observed: 3.08 ft at 5:00PM Jul 29, 2014Observed: 3.08 ft at 5:15PM Jul 29, 2014Observed: 3.08 ft at 5:30PM Jul 29, 2014Observed: 3.08 ft at 5:45PM Jul 29, 2014Observed: 3.09 ft at 6:00PM Jul 29, 2014Observed: 3.09 ft at 6:15PM Jul 29, 2014Observed: 3.1 ft at 6:30PM Jul 29, 2014Observed: 3.1 ft at 6:45PM Jul 29, 2014Observed: 3.1 ft at 7:00PM Jul 29, 2014Observed: 3.1 ft at 7:15PM Jul 29, 2014Observed: 3.11 ft at 7:30PM Jul 29, 2014Observed: 3.12 ft at 7:45PM Jul 29, 2014Observed: 3.12 ft at 8:00PM Jul 29, 2014Observed: 3.13 ft at 8:15PM Jul 29, 2014Observed: 3.14 ft at 8:30PM Jul 29, 2014Observed: 3.15 ft at 8:45PM Jul 29, 2014Observed: 3.15 ft at 9:00PM Jul 29, 2014Observed: 3.15 ft at 9:15PM Jul 29, 2014Observed: 3.16 ft at 9:30PM Jul 29, 2014Observed: 3.17 ft at 9:45PM Jul 29, 2014Observed: 3.18 ft at 10:00PM Jul 29, 2014Observed: 3.18 ft at 10:15PM Jul 29, 2014Observed: 3.18 ft at 10:30PM Jul 29, 2014Observed: 3.19 ft at 10:45PM Jul 29, 2014Observed: 3.19 ft at 11:00PM Jul 29, 2014Observed: 3.2 ft at 11:15PM Jul 29, 2014Observed: 3.2 ft at 11:30PM Jul 29, 2014Observed: 3.21 ft at 11:45PM Jul 29, 2014Observed: 3.21 ft at 12:00AM Jul 30, 2014Observed: 3.21 ft at 12:15AM Jul 30, 2014Observed: 3.22 ft at 12:30AM Jul 30, 2014Observed: 3.22 ft at 12:45AM Jul 30, 2014Observed: 3.22 ft at 1:00AM Jul 30, 2014Observed: 3.22 ft at 1:15AM Jul 30, 2014Observed: 3.23 ft at 1:30AM Jul 30, 2014Observed: 3.22 ft at 1:45AM Jul 30, 2014Observed: 3.23 ft at 2:00AM Jul 30, 2014Observed: 3.23 ft at 2:15AM Jul 30, 2014Observed: 3.23 ft at 2:30AM Jul 30, 2014Observed: 3.22 ft at 2:45AM Jul 30, 2014Observed: 3.23 ft at 3:00AM Jul 30, 2014Observed: 3.23 ft at 3:15AM Jul 30, 2014Observed: 3.23 ft at 3:30AM Jul 30, 2014Observed: 3.23 ft at 3:45AM Jul 30, 2014Observed: 3.23 ft at 4:00AM Jul 30, 2014Observed: 3.23 ft at 4:15AM Jul 30, 2014Observed: 3.23 ft at 4:30AM Jul 30, 2014Observed: 3.22 ft at 4:45AM Jul 30, 2014Highest Observation: 3.24 ft at 5:00AM Jul 30, 2014Observed: 3.23 ft at 5:15AM Jul 30, 2014Observed: 3.23 ft at 5:30AM Jul 30, 2014Observed: 3.23 ft at 5:45AM Jul 30, 2014Observed: 3.23 ft at 6:00AM Jul 30, 2014Observed: 3.23 ft at 6:15AM Jul 30, 2014Observed: 3.22 ft at 6:30AM Jul 30, 2014Observed: 3.23 ft at 6:45AM Jul 30, 2014Observed: 3.22 ft at 7:00AM Jul 30, 2014Observed: 3.22 ft at 7:15AM Jul 30, 2014Observed: 3.22 ft at 7:30AM Jul 30, 2014Observed: 3.22 ft at 7:45AM Jul 30, 2014Observed: 3.22 ft at 8:00AM Jul 30, 2014Observed: 3.22 ft at 8:15AM Jul 30, 2014Observed: 3.22 ft at 8:30AM Jul 30, 2014Observed: 3.22 ft at 8:45AM Jul 30, 2014Observed: 3.21 ft at 9:00AM Jul 30, 2014Observed: 3.22 ft at 9:15AM Jul 30, 2014Observed: 3.22 ft at 9:30AM Jul 30, 2014Observed: 3.22 ft at 9:45AM Jul 30, 2014Observed: 3.21 ft at 10:00AM Jul 30, 2014Observed: 3.22 ft at 10:15AM Jul 30, 2014Observed: 3.22 ft at 10:30AM Jul 30, 2014Observed: 3.21 ft at 10:45AM Jul 30, 2014Observed: 3.21 ft at 11:00AM Jul 30, 2014Observed: 3.21 ft at 11:15AM Jul 30, 2014Observed: 3.21 ft at 11:30AM Jul 30, 2014Observed: 3.21 ft at 11:45AM Jul 30, 2014Observed: 3.21 ft at 12:00PM Jul 30, 2014Observed: 3.21 ft at 12:15PM Jul 30, 2014Observed: 3.21 ft at 12:30PM Jul 30, 2014Observed: 3.2 ft at 12:45PM Jul 30, 2014Observed: 3.19 ft at 1:00PM Jul 30, 2014Observed: 3.2 ft at 1:15PM Jul 30, 2014Observed: 3.2 ft at 1:30PM Jul 30, 2014Observed: 3.2 ft at 1:45PM Jul 30, 2014Observed: 3.19 ft at 2:00PM Jul 30, 2014Observed: 3.2 ft at 2:15PM Jul 30, 2014Observed: 3.18 ft at 2:30PM Jul 30, 2014Observed: 3.18 ft at 2:45PM Jul 30, 2014Observed: 3.19 ft at 3:00PM Jul 30, 2014Observed: 3.18 ft at 3:15PM Jul 30, 2014Observed: 3.17 ft at 3:30PM Jul 30, 2014Observed: 3.18 ft at 3:45PM Jul 30, 2014Observed: 3.18 ft at 4:00PM Jul 30, 2014Observed: 3.18 ft at 4:15PM Jul 30, 2014Observed: 3.18 ft at 4:30PM Jul 30, 2014Observed: 3.18 ft at 4:45PM Jul 30, 2014Observed: 3.18 ft at 5:00PM Jul 30, 2014Observed: 3.18 ft at 5:15PM Jul 30, 2014Observed: 3.17 ft at 5:30PM Jul 30, 2014Observed: 3.18 ft at 5:45PM Jul 30, 2014Observed: 3.18 ft at 6:00PM Jul 30, 2014Observed: 3.18 ft at 6:15PM Jul 30, 2014Observed: 3.18 ft at 6:30PM Jul 30, 2014Observed: 3.17 ft at 6:45PM Jul 30, 2014Observed: 3.17 ft at 7:00PM Jul 30, 2014Observed: 3.17 ft at 7:15PM Jul 30, 2014Observed: 3.17 ft at 7:30PM Jul 30, 2014Observed: 3.16 ft at 7:45PM Jul 30, 2014Observed: 3.17 ft at 8:00PM Jul 30, 2014Observed: 3.15 ft at 8:15PM Jul 30, 2014Observed: 3.16 ft at 8:30PM Jul 30, 2014Observed: 3.16 ft at 8:45PM Jul 30, 2014Observed: 3.15 ft at 9:00PM Jul 30, 2014Observed: 3.15 ft at 9:15PM Jul 30, 2014Observed: 3.15 ft at 9:30PM Jul 30, 2014Observed: 3.14 ft at 9:45PM Jul 30, 2014Observed: 3.15 ft at 10:00PM Jul 30, 2014Observed: 3.15 ft at 10:15PM Jul 30, 2014Observed: 3.14 ft at 10:30PM Jul 30, 2014Observed: 3.14 ft at 10:45PM Jul 30, 2014Observed: 3.14 ft at 11:00PM Jul 30, 2014Observed: 3.13 ft at 11:15PM Jul 30, 2014Observed: 3.14 ft at 11:30PM Jul 30, 2014Observed: 3.13 ft at 11:45PM Jul 30, 2014Observed: 3.13 ft at 12:00AM Jul 31, 2014Observed: 3.13 ft at 12:15AM Jul 31, 2014Observed: 3.13 ft at 12:30AM Jul 31, 2014Observed: 3.13 ft at 12:45AM Jul 31, 2014Observed: 3.12 ft at 1:00AM Jul 31, 2014Observed: 3.13 ft at 1:15AM Jul 31, 2014Observed: 3.13 ft at 1:30AM Jul 31, 2014Observed: 3.12 ft at 1:45AM Jul 31, 2014Observed: 3.13 ft at 2:00AM Jul 31, 2014Observed: 3.12 ft at 2:15AM Jul 31, 2014Observed: 3.12 ft at 2:30AM Jul 31, 2014Observed: 3.12 ft at 2:45AM Jul 31, 2014Observed: 3.11 ft at 3:00AM Jul 31, 2014Observed: 3.11 ft at 3:15AM Jul 31, 2014Observed: 3.12 ft at 3:30AM Jul 31, 2014Observed: 3.11 ft at 3:45AM Jul 31, 2014Observed: 3.11 ft at 4:00AM Jul 31, 2014Observed: 3.12 ft at 4:15AM Jul 31, 2014Observed: 3.11 ft at 4:30AM Jul 31, 2014Observed: 3.11 ft at 4:45AM Jul 31, 2014Observed: 3.11 ft at 5:00AM Jul 31, 2014Observed: 3.11 ft at 5:15AM Jul 31, 2014Observed: 3.11 ft at 5:30AM Jul 31, 2014Observed: 3.12 ft at 5:45AM Jul 31, 2014Observed: 3.11 ft at 6:00AM Jul 31, 2014Observed: 3.11 ft at 6:15AM Jul 31, 2014Observed: 3.11 ft at 6:30AM Jul 31, 2014Observed: 3.11 ft at 6:45AM Jul 31, 2014Observed: 3.11 ft at 7:00AM Jul 31, 2014Observed: 3.11 ft at 7:15AM Jul 31, 2014Observed: 3.12 ft at 7:30AM Jul 31, 2014Observed: 3.11 ft at 7:45AM Jul 31, 2014Observed: 3.11 ft at 8:00AM Jul 31, 2014Observed: 3.11 ft at 8:15AM Jul 31, 2014Observed: 3.11 ft at 8:30AM Jul 31, 2014Observed: 3.12 ft at 8:45AM Jul 31, 2014Observed: 3.11 ft at 9:00AM Jul 31, 2014Observed: 3.12 ft at 9:15AM Jul 31, 2014Observed: 3.11 ft at 9:30AM Jul 31, 2014Observed: 3.12 ft at 9:45AM Jul 31, 2014Observed: 3.12 ft at 10:00AM Jul 31, 2014Observed: 3.12 ft at 10:15AM Jul 31, 2014Observed: 3.11 ft at 10:30AM Jul 31, 2014Observed: 3.12 ft at 10:45AM Jul 31, 2014Observed: 3.11 ft at 11:00AM Jul 31, 2014Observed: 3.12 ft at 11:15AM Jul 31, 2014Observed: 3.11 ft at 11:30AM Jul 31, 2014Observed: 3.12 ft at 11:45AM Jul 31, 2014Observed: 3.11 ft at 12:00PM Jul 31, 2014Observed: 3.12 ft at 12:15PM Jul 31, 2014Observed: 3.12 ft at 12:30PM Jul 31, 2014Observed: 3.12 ft at 12:45PM Jul 31, 2014Observed: 3.11 ft at 1:00PM Jul 31, 2014Observed: 3.12 ft at 1:15PM Jul 31, 2014Observed: 3.12 ft at 1:30PM Jul 31, 2014Observed: 3.12 ft at 1:45PM Jul 31, 2014Observed: 3.13 ft at 2:00PM Jul 31, 2014Observed: 3.12 ft at 2:15PM Jul 31, 2014Observed: 3.12 ft at 2:30PM Jul 31, 2014Observed: 3.11 ft at 2:45PM Jul 31, 2014Observed: 3.12 ft at 3:00PM Jul 31, 2014Observed: 3.12 ft at 3:15PM Jul 31, 2014Observed: 3.12 ft at 3:30PM Jul 31, 2014Observed: 3.12 ft at 3:45PM Jul 31, 2014Observed: 3.12 ft at 4:00PM Jul 31, 2014Observed: 3.12 ft at 4:15PM Jul 31, 2014Observed: 3.11 ft at 4:30PM Jul 31, 2014Observed: 3.12 ft at 4:45PM Jul 31, 2014Observed: 3.12 ft at 5:00PM Jul 31, 2014Observed: 3.11 ft at 5:15PM Jul 31, 2014Observed: 3.11 ft at 5:30PM Jul 31, 2014Observed: 3.12 ft at 5:45PM Jul 31, 2014Observed: 3.12 ft at 6:00PM Jul 31, 2014Observed: 3.12 ft at 6:15PM Jul 31, 2014Observed: 3.12 ft at 6:30PM Jul 31, 2014Observed: 3.12 ft at 6:45PM Jul 31, 2014Highest Forecast: 3.1 ft 8:00PM Jul 31, 2014Highest Forecast: 3.1 ft 2:00AM Aug 01, 2014Highest Forecast: 3.1 ft 8:00AM Aug 01, 2014Highest Forecast: 3.1 ft 2:00PM Aug 01, 2014Highest Forecast: 3.1 ft 8:00PM Aug 01, 2014Highest Forecast: 3.1 ft 2:00AM Aug 02, 2014Highest Forecast: 3.1 ft 8:00AM Aug 02, 2014Highest Forecast: 3.1 ft 2:00PM Aug 02, 2014Highest Forecast: 3.1 ft 8:00PM Aug 02, 2014Highest Forecast: 3.1 ft 2:00AM Aug 03, 2014Highest Forecast: 3.1 ft 8:00AM Aug 03, 2014USGS--Water Resources of the United StatesBRKM2(plotting HGIRG) Graph Created (7:35PM Jul 31, 2014)ObservedForecast (issued 8:57AM Jul 31)Latest observed value: 3.12 ft at 6:45 PM EDT 31-Jul-2014. Flood Stage is 10 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts for the Potomac River near Washington DC (Little Falls) are issued routinely year-round.
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Upstream Gauge - at Edwards Ferry Upstream Gauge Downstream Gauge Downstream Gauge - at Georgetown / Wisconsin Ave
Flood Categories (in feet)
Major Flood Stage:14
Moderate Flood Stage:12
Flood Stage:10
Action Stage:5

Historical Crests
(1) 28.10 ft on 03/19/1936
(2) 26.88 ft on 10/17/1942
(3) 23.30 ft on 04/28/1937
(4) 22.03 ft on 06/24/1972
(5) 19.29 ft on 01/21/1996
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(P): Preliminary values subject to further review.

Low Water Records
Zoom Level:13
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Gauge LocationGauge Map Marker
Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
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17 WATER OVERFLOWS THE OVERLOOKS AT GREAT FALLS NATIONAL PARK AND APPROACHES THE LOWER LEVEL OF THE VISITORS CENTER. MOST OF THE C AND O CANAL TOWPATH DOWNSTREAM OF PENNYFIELD IS FLOODED.
15 MOST OF THE C&O CANAL TOWPATH FROM PENNYFIELD DOWNSTREAM IS FLOODED.
14 SIGNIFICANT PORTIONS OF THE C&O CANAL TOWPATH ARE FLOODED. THE BLOCKHOUSE POINT PARK IS FLOODED. WATER REACHES THE RETAINING WALL AT OVERLOOK 1 AT GREAT FALLS NATIONAL PARK BUT DOES NOT OVERTOP IT.
12 THE C&O CANAL OVERFLOWS AT THE GREAT FALLS TAVERN. WATER COVERS THE TOWPATH IN MANY AREAS.
11.5 WATER COVERS THE TOWPATH IN MULTIPLE SPOTS BETWEEN THE WASHINGTON AQUEDUCT DAM AND PENNYFIELD LOCK...MILEPOSTS 15 TO 19 ON THE C AND O CANAL.
11 WATER COVERS THE TOWPATH BETWEEN SWAINS LOCK AND PENNYFIELD LOCK...MILEPOSTS 17 TO 19 ON THE C AND O CANAL.
10 WATER BEGINS TO OVERFLOW THE BANKS INTO LOW LYING AREAS ON THE MARYLAND SIDE OF THE RIVER NEAR LITTLE FALLS.
9 SEVERAL TRAILS ON BOTH SIDES OF THE RIVER BETWEEN GREAT FALLS AND CHAIN BRIDGE ARE FLOODED AND WILL BE CLOSED.
7 UPPER PORTIONS OF THE RIVER TRAIL AT GREAT FALLS NATIONAL PARK BEGIN TO FLOOD AND WILL BE CLOSED.
5.5 WATER BEGINS TO AFFECT PORTIONS OF THE BILLY GOAT TRAIL BETWEEN GREAT FALLS AND CARDEROCK. THESE TRAILS MAY BE CLOSED.
5 PORTIONS OF THE POTOMAC HERITAGE TRAIL BEGIN TO FLOOD.
4.5 THE RIVER REACHES DANGER LEVEL FOR BOATERS...AS DEFINED BY THE STATE OF MARYLAND. CONDITIONS FOR BOATING WILL BE EXTREMELY HAZARDOUS.
3.5 THE RIVER REACHES CAUTION LEVEL FOR BOATERS...AS DEFINED BY THE STATE OF MARYLAND. FAST MOVING WATER AND CHANGING CURRENTS WILL BE EXPERIENCED.
About This Location Collapse

Latitude: 38.949722° N, Longitude: 77.127778° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 10 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
Elevation
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 37.95 ft 47.95 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:

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NWS Information
National Weather Service
(Baltimore/Washington) Sterling Weather Forecast Office
43858 Weather Service Rd.
Sterling, VA 20166
(703) 996-2200
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Page last modified: 16-Jul-2014 2:08 AM
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