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Hydrograph River at a Glance Download
Potomac River near Washington DC (Little Falls) Stage (ft)Flow (kcfs)Observed: 2.88 ft at 4:00AM Nov 17, 2014Observed: 2.88 ft at 4:15AM Nov 17, 2014Observed: 2.88 ft at 4:30AM Nov 17, 2014Observed: 2.88 ft at 4:45AM Nov 17, 2014Observed: 2.88 ft at 5:00AM Nov 17, 2014Observed: 2.89 ft at 5:15AM Nov 17, 2014Observed: 2.88 ft at 5:30AM Nov 17, 2014Observed: 2.89 ft at 5:45AM Nov 17, 2014Observed: 2.89 ft at 6:00AM Nov 17, 2014Observed: 2.89 ft at 6:15AM Nov 17, 2014Observed: 2.89 ft at 6:30AM Nov 17, 2014Observed: 2.9 ft at 6:45AM Nov 17, 2014Observed: 2.9 ft at 7:00AM Nov 17, 2014Observed: 2.9 ft at 7:15AM Nov 17, 2014Observed: 2.9 ft at 7:30AM Nov 17, 2014Observed: 2.9 ft at 7:45AM Nov 17, 2014Observed: 2.9 ft at 8:00AM Nov 17, 2014Observed: 2.91 ft at 8:15AM Nov 17, 2014Observed: 2.91 ft at 8:30AM Nov 17, 2014Observed: 2.9 ft at 8:45AM Nov 17, 2014Observed: 2.9 ft at 9:00AM Nov 17, 2014Observed: 2.91 ft at 9:15AM Nov 17, 2014Observed: 2.91 ft at 9:30AM Nov 17, 2014Observed: 2.91 ft at 9:45AM Nov 17, 2014Observed: 2.92 ft at 10:00AM Nov 17, 2014Observed: 2.93 ft at 10:15AM Nov 17, 2014Observed: 2.92 ft at 10:30AM Nov 17, 2014Observed: 2.92 ft at 10:45AM Nov 17, 2014Observed: 2.93 ft at 11:00AM Nov 17, 2014Observed: 2.93 ft at 11:15AM Nov 17, 2014Observed: 2.93 ft at 11:30AM Nov 17, 2014Observed: 2.93 ft at 11:45AM Nov 17, 2014Observed: 2.94 ft at 12:00PM Nov 17, 2014Observed: 2.94 ft at 12:15PM Nov 17, 2014Observed: 2.95 ft at 12:30PM Nov 17, 2014Observed: 2.96 ft at 12:45PM Nov 17, 2014Observed: 2.96 ft at 1:00PM Nov 17, 2014Observed: 2.97 ft at 1:15PM Nov 17, 2014Observed: 2.99 ft at 1:30PM Nov 17, 2014Observed: 2.99 ft at 1:45PM Nov 17, 2014Observed: 2.99 ft at 2:00PM Nov 17, 2014Observed: 2.99 ft at 2:15PM Nov 17, 2014Observed: 2.99 ft at 2:30PM Nov 17, 2014Observed: 2.99 ft at 2:45PM Nov 17, 2014Observed: 3 ft at 3:00PM Nov 17, 2014Observed: 3 ft at 3:15PM Nov 17, 2014Observed: 3.01 ft at 3:30PM Nov 17, 2014Observed: 3.01 ft at 3:45PM Nov 17, 2014Observed: 3.01 ft at 4:00PM Nov 17, 2014Observed: 3 ft at 4:15PM Nov 17, 2014Observed: 3 ft at 4:30PM Nov 17, 2014Observed: 3 ft at 4:45PM Nov 17, 2014Observed: 2.99 ft at 5:00PM Nov 17, 2014Observed: 2.99 ft at 5:15PM Nov 17, 2014Observed: 2.99 ft at 5:30PM Nov 17, 2014Observed: 2.99 ft at 5:45PM Nov 17, 2014Observed: 2.97 ft at 6:00PM Nov 17, 2014Observed: 2.98 ft at 6:15PM Nov 17, 2014Observed: 2.97 ft at 6:30PM Nov 17, 2014Observed: 2.97 ft at 6:45PM Nov 17, 2014Observed: 2.97 ft at 7:00PM Nov 17, 2014Observed: 2.97 ft at 7:15PM Nov 17, 2014Observed: 2.97 ft at 7:30PM Nov 17, 2014Observed: 2.98 ft at 7:45PM Nov 17, 2014Observed: 2.98 ft at 8:00PM Nov 17, 2014Observed: 2.98 ft at 8:15PM Nov 17, 2014Observed: 2.99 ft at 8:30PM Nov 17, 2014Observed: 2.98 ft at 8:45PM Nov 17, 2014Observed: 2.99 ft at 9:00PM Nov 17, 2014Observed: 2.96 ft at 9:15PM Nov 17, 2014Observed: 2.97 ft at 9:30PM Nov 17, 2014Observed: 2.96 ft at 9:45PM Nov 17, 2014Observed: 3.01 ft at 10:00PM Nov 17, 2014Observed: 2.99 ft at 10:15PM Nov 17, 2014Observed: 2.91 ft at 10:30PM Nov 17, 2014Observed: 2.94 ft at 10:45PM Nov 17, 2014Observed: 2.95 ft at 11:00PM Nov 17, 2014Observed: 2.99 ft at 11:15PM Nov 17, 2014Observed: 2.97 ft at 11:30PM Nov 17, 2014Observed: 3.01 ft at 11:45PM Nov 17, 2014Observed: 3 ft at 12:00AM Nov 18, 2014Observed: 3.01 ft at 12:15AM Nov 18, 2014Observed: 3.02 ft at 12:30AM Nov 18, 2014Observed: 2.97 ft at 12:45AM Nov 18, 2014Observed: 2.98 ft at 1:00AM Nov 18, 2014Observed: 2.97 ft at 1:15AM Nov 18, 2014Observed: 2.94 ft at 1:30AM Nov 18, 2014Observed: 3.01 ft at 1:45AM Nov 18, 2014Observed: 3.02 ft at 2:00AM Nov 18, 2014Observed: 2.98 ft at 2:15AM Nov 18, 2014Observed: 2.96 ft at 2:30AM Nov 18, 2014Observed: 2.97 ft at 2:45AM Nov 18, 2014Observed: 2.96 ft at 3:00AM Nov 18, 2014Observed: 2.89 ft at 3:15AM Nov 18, 2014Observed: 2.99 ft at 3:30AM Nov 18, 2014Observed: 3.01 ft at 3:45AM Nov 18, 2014Observed: 2.99 ft at 4:00AM Nov 18, 2014Observed: 2.98 ft at 4:15AM Nov 18, 2014Observed: 3.01 ft at 4:30AM Nov 18, 2014Observed: 2.97 ft at 4:45AM Nov 18, 2014Observed: 3.02 ft at 5:00AM Nov 18, 2014Observed: 3 ft at 5:15AM Nov 18, 2014Observed: 2.98 ft at 5:30AM Nov 18, 2014Observed: 2.98 ft at 5:45AM Nov 18, 2014Observed: 3.03 ft at 6:00AM Nov 18, 2014Observed: 3.01 ft at 6:15AM Nov 18, 2014Observed: 3.02 ft at 6:30AM Nov 18, 2014Observed: 3.02 ft at 6:45AM Nov 18, 2014Observed: 3.02 ft at 7:00AM Nov 18, 2014Observed: 3.02 ft at 7:15AM Nov 18, 2014Observed: 3.03 ft at 7:30AM Nov 18, 2014Observed: 3 ft at 7:45AM Nov 18, 2014Observed: 3.01 ft at 8:00AM Nov 18, 2014Highest Observation: 3.04 ft at 8:15AM Nov 18, 2014Observed: 3 ft at 8:30AM Nov 18, 2014Observed: 3.02 ft at 8:45AM Nov 18, 2014Observed: 3 ft at 9:00AM Nov 18, 2014Observed: 2.99 ft at 9:15AM Nov 18, 2014Observed: 2.96 ft at 9:30AM Nov 18, 2014Observed: 2.99 ft at 9:45AM Nov 18, 2014Observed: 2.94 ft at 10:00AM Nov 18, 2014Observed: 2.98 ft at 10:15AM Nov 18, 2014Observed: 2.94 ft at 10:30AM Nov 18, 2014Observed: 2.99 ft at 10:45AM Nov 18, 2014Observed: 3 ft at 11:00AM Nov 18, 2014Observed: 2.96 ft at 11:15AM Nov 18, 2014Observed: 3.02 ft at 11:30AM Nov 18, 2014Observed: 2.94 ft at 11:45AM Nov 18, 2014Observed: 2.97 ft at 12:00PM Nov 18, 2014Observed: 2.99 ft at 12:15PM Nov 18, 2014Observed: 2.89 ft at 12:30PM Nov 18, 2014Observed: 3.01 ft at 12:45PM Nov 18, 2014Observed: 2.98 ft at 1:00PM Nov 18, 2014Observed: 2.98 ft at 1:15PM Nov 18, 2014Observed: 2.94 ft at 1:30PM Nov 18, 2014Observed: 2.94 ft at 1:45PM Nov 18, 2014Observed: 3.03 ft at 2:00PM Nov 18, 2014Observed: 2.98 ft at 2:15PM Nov 18, 2014Observed: 2.98 ft at 2:30PM Nov 18, 2014Observed: 3.01 ft at 2:45PM Nov 18, 2014Observed: 2.97 ft at 3:00PM Nov 18, 2014Observed: 2.9 ft at 3:15PM Nov 18, 2014Observed: 2.97 ft at 3:30PM Nov 18, 2014Observed: 2.97 ft at 3:45PM Nov 18, 2014Observed: 2.97 ft at 4:00PM Nov 18, 2014Observed: 2.99 ft at 4:15PM Nov 18, 2014Observed: 2.99 ft at 4:30PM Nov 18, 2014Observed: 2.97 ft at 4:45PM Nov 18, 2014Observed: 2.99 ft at 5:00PM Nov 18, 2014Observed: 2.99 ft at 5:15PM Nov 18, 2014Observed: 2.99 ft at 5:30PM Nov 18, 2014Observed: 3 ft at 5:45PM Nov 18, 2014Observed: 2.99 ft at 6:00PM Nov 18, 2014Observed: 3 ft at 6:15PM Nov 18, 2014Observed: 3 ft at 6:30PM Nov 18, 2014Observed: 3.01 ft at 6:45PM Nov 18, 2014Observed: 3 ft at 7:00PM Nov 18, 2014Observed: 3 ft at 7:15PM Nov 18, 2014Observed: 3 ft at 7:30PM Nov 18, 2014Observed: 2.99 ft at 7:45PM Nov 18, 2014Observed: 2.99 ft at 8:00PM Nov 18, 2014Observed: 2.98 ft at 8:15PM Nov 18, 2014Observed: 2.98 ft at 8:30PM Nov 18, 2014Observed: 2.98 ft at 8:45PM Nov 18, 2014Observed: 2.98 ft at 9:00PM Nov 18, 2014Observed: 2.98 ft at 9:15PM Nov 18, 2014Observed: 2.98 ft at 9:30PM Nov 18, 2014Observed: 2.98 ft at 9:45PM Nov 18, 2014Observed: 2.97 ft at 10:00PM Nov 18, 2014Observed: 2.97 ft at 10:15PM Nov 18, 2014Observed: 2.96 ft at 10:30PM Nov 18, 2014Observed: 2.96 ft at 10:45PM Nov 18, 2014Observed: 2.96 ft at 11:00PM Nov 18, 2014Observed: 2.96 ft at 11:15PM Nov 18, 2014Observed: 2.95 ft at 11:30PM Nov 18, 2014Observed: 2.95 ft at 11:45PM Nov 18, 2014Observed: 2.95 ft at 12:00AM Nov 19, 2014Observed: 2.95 ft at 12:15AM Nov 19, 2014Observed: 2.95 ft at 12:30AM Nov 19, 2014Observed: 2.95 ft at 12:45AM Nov 19, 2014Observed: 2.95 ft at 1:00AM Nov 19, 2014Observed: 2.94 ft at 1:15AM Nov 19, 2014Observed: 2.94 ft at 1:30AM Nov 19, 2014Observed: 2.94 ft at 1:45AM Nov 19, 2014Observed: 2.95 ft at 2:00AM Nov 19, 2014Observed: 2.94 ft at 2:15AM Nov 19, 2014Observed: 2.94 ft at 2:30AM Nov 19, 2014Observed: 2.94 ft at 2:45AM Nov 19, 2014Observed: 2.94 ft at 3:00AM Nov 19, 2014Observed: 2.94 ft at 3:15AM Nov 19, 2014Observed: 2.94 ft at 3:30AM Nov 19, 2014Observed: 2.94 ft at 3:45AM Nov 19, 2014Observed: 2.94 ft at 4:00AM Nov 19, 2014Observed: 2.94 ft at 4:15AM Nov 19, 2014Observed: 2.94 ft at 4:30AM Nov 19, 2014Observed: 2.94 ft at 4:45AM Nov 19, 2014Observed: 2.94 ft at 5:00AM Nov 19, 2014Observed: 2.94 ft at 5:15AM Nov 19, 2014Observed: 2.95 ft at 5:30AM Nov 19, 2014Observed: 2.94 ft at 5:45AM Nov 19, 2014Observed: 2.95 ft at 6:00AM Nov 19, 2014Observed: 2.95 ft at 6:15AM Nov 19, 2014Observed: 2.95 ft at 6:30AM Nov 19, 2014Observed: 2.95 ft at 6:45AM Nov 19, 2014Observed: 2.95 ft at 7:00AM Nov 19, 2014Observed: 2.95 ft at 7:15AM Nov 19, 2014Observed: 2.95 ft at 7:30AM Nov 19, 2014Observed: 2.96 ft at 7:45AM Nov 19, 2014Observed: 2.95 ft at 8:00AM Nov 19, 2014Observed: 2.96 ft at 8:15AM Nov 19, 2014Observed: 2.96 ft at 8:30AM Nov 19, 2014Observed: 2.96 ft at 8:45AM Nov 19, 2014Observed: 2.96 ft at 9:00AM Nov 19, 2014Observed: 2.96 ft at 9:15AM Nov 19, 2014Observed: 2.96 ft at 9:30AM Nov 19, 2014Observed: 2.96 ft at 9:45AM Nov 19, 2014Observed: 2.96 ft at 10:00AM Nov 19, 2014Observed: 2.96 ft at 10:15AM Nov 19, 2014Observed: 2.97 ft at 10:30AM Nov 19, 2014Observed: 2.96 ft at 10:45AM Nov 19, 2014Observed: 2.96 ft at 11:00AM Nov 19, 2014Observed: 2.96 ft at 11:15AM Nov 19, 2014Observed: 2.97 ft at 11:30AM Nov 19, 2014Observed: 2.96 ft at 11:45AM Nov 19, 2014Observed: 2.96 ft at 12:00PM Nov 19, 2014Observed: 2.97 ft at 12:15PM Nov 19, 2014Observed: 2.97 ft at 12:30PM Nov 19, 2014Observed: 2.96 ft at 12:45PM Nov 19, 2014Observed: 2.96 ft at 1:00PM Nov 19, 2014Observed: 2.95 ft at 1:15PM Nov 19, 2014Observed: 2.95 ft at 1:30PM Nov 19, 2014Observed: 2.96 ft at 1:45PM Nov 19, 2014Observed: 2.96 ft at 2:00PM Nov 19, 2014Observed: 2.96 ft at 2:15PM Nov 19, 2014Observed: 2.96 ft at 2:30PM Nov 19, 2014Observed: 2.96 ft at 2:45PM Nov 19, 2014Observed: 2.96 ft at 3:00PM Nov 19, 2014Observed: 2.96 ft at 3:15PM Nov 19, 2014Observed: 2.96 ft at 3:30PM Nov 19, 2014Observed: 2.95 ft at 3:45PM Nov 19, 2014Observed: 2.96 ft at 4:00PM Nov 19, 2014Observed: 2.95 ft at 4:15PM Nov 19, 2014Observed: 2.95 ft at 4:30PM Nov 19, 2014Observed: 2.96 ft at 4:45PM Nov 19, 2014Observed: 2.96 ft at 5:00PM Nov 19, 2014Observed: 2.95 ft at 5:15PM Nov 19, 2014Observed: 2.95 ft at 5:30PM Nov 19, 2014Observed: 2.96 ft at 5:45PM Nov 19, 2014Observed: 2.95 ft at 6:00PM Nov 19, 2014Observed: 2.96 ft at 6:15PM Nov 19, 2014Observed: 2.95 ft at 6:30PM Nov 19, 2014Observed: 2.95 ft at 6:45PM Nov 19, 2014Observed: 2.96 ft at 7:00PM Nov 19, 2014Observed: 2.96 ft at 7:15PM Nov 19, 2014Observed: 2.94 ft at 7:30PM Nov 19, 2014Observed: 2.95 ft at 7:45PM Nov 19, 2014Observed: 2.95 ft at 8:00PM Nov 19, 2014Observed: 2.95 ft at 8:15PM Nov 19, 2014Observed: 2.95 ft at 8:30PM Nov 19, 2014Observed: 2.95 ft at 8:45PM Nov 19, 2014Observed: 2.96 ft at 9:00PM Nov 19, 2014Observed: 2.95 ft at 9:15PM Nov 19, 2014Observed: 2.95 ft at 9:30PM Nov 19, 2014Observed: 2.96 ft at 9:45PM Nov 19, 2014Observed: 2.96 ft at 10:00PM Nov 19, 2014Observed: 2.95 ft at 10:15PM Nov 19, 2014Observed: 2.96 ft at 10:30PM Nov 19, 2014Observed: 2.97 ft at 10:45PM Nov 19, 2014Observed: 2.96 ft at 11:00PM Nov 19, 2014Observed: 2.96 ft at 11:15PM Nov 19, 2014Observed: 2.97 ft at 11:30PM Nov 19, 2014Observed: 2.97 ft at 11:45PM Nov 19, 2014Observed: 2.97 ft at 12:00AM Nov 20, 2014Observed: 2.97 ft at 12:15AM Nov 20, 2014Observed: 2.97 ft at 12:30AM Nov 20, 2014Observed: 2.97 ft at 12:45AM Nov 20, 2014Observed: 2.96 ft at 1:00AM Nov 20, 2014Observed: 2.96 ft at 1:15AM Nov 20, 2014Observed: 2.96 ft at 1:30AM Nov 20, 2014Observed: 2.97 ft at 1:45AM Nov 20, 2014Observed: 2.97 ft at 2:00AM Nov 20, 2014Observed: 2.97 ft at 2:15AM Nov 20, 2014Observed: 2.97 ft at 2:30AM Nov 20, 2014Observed: 2.97 ft at 2:45AM Nov 20, 2014Observed: 2.97 ft at 3:00AM Nov 20, 2014Observed: 2.96 ft at 3:15AM Nov 20, 2014Observed: 2.97 ft at 3:30AM Nov 20, 2014Observed: 2.97 ft at 3:45AM Nov 20, 2014Observed: 2.97 ft at 4:00AM Nov 20, 2014Observed: 2.97 ft at 4:15AM Nov 20, 2014Observed: 2.97 ft at 4:30AM Nov 20, 2014Observed: 2.97 ft at 4:45AM Nov 20, 2014Observed: 2.97 ft at 5:00AM Nov 20, 2014Observed: 2.97 ft at 5:15AM Nov 20, 2014Observed: 2.97 ft at 5:30AM Nov 20, 2014Observed: 2.97 ft at 5:45AM Nov 20, 2014Observed: 2.97 ft at 6:00AM Nov 20, 2014Observed: 2.97 ft at 6:15AM Nov 20, 2014Observed: 2.97 ft at 6:30AM Nov 20, 2014Observed: 2.97 ft at 6:45AM Nov 20, 2014Observed: 2.98 ft at 7:00AM Nov 20, 2014Observed: 2.98 ft at 7:15AM Nov 20, 2014Observed: 2.98 ft at 7:30AM Nov 20, 2014Observed: 2.98 ft at 7:45AM Nov 20, 2014Observed: 2.97 ft at 8:00AM Nov 20, 2014Observed: 2.98 ft at 8:15AM Nov 20, 2014Observed: 2.97 ft at 8:30AM Nov 20, 2014Observed: 2.98 ft at 8:45AM Nov 20, 2014Observed: 2.98 ft at 9:00AM Nov 20, 2014Observed: 2.97 ft at 9:15AM Nov 20, 2014Observed: 2.97 ft at 9:30AM Nov 20, 2014Observed: 2.97 ft at 9:45AM Nov 20, 2014Observed: 2.98 ft at 10:00AM Nov 20, 2014Observed: 2.97 ft at 10:15AM Nov 20, 2014Observed: 2.98 ft at 10:30AM Nov 20, 2014Observed: 2.97 ft at 10:45AM Nov 20, 2014Observed: 2.97 ft at 11:00AM Nov 20, 2014Observed: 2.97 ft at 11:15AM Nov 20, 2014Observed: 2.97 ft at 11:30AM Nov 20, 2014Observed: 2.96 ft at 11:45AM Nov 20, 2014Observed: 2.97 ft at 12:00PM Nov 20, 2014Observed: 2.96 ft at 12:15PM Nov 20, 2014Observed: 2.96 ft at 12:30PM Nov 20, 2014Observed: 2.96 ft at 12:45PM Nov 20, 2014Observed: 2.96 ft at 1:00PM Nov 20, 2014Observed: 2.96 ft at 1:15PM Nov 20, 2014Observed: 2.95 ft at 1:30PM Nov 20, 2014Observed: 2.95 ft at 1:45PM Nov 20, 2014Observed: 2.96 ft at 2:00PM Nov 20, 2014Observed: 2.96 ft at 2:15PM Nov 20, 2014Observed: 2.96 ft at 2:30PM Nov 20, 2014Observed: 2.95 ft at 2:45PM Nov 20, 2014Observed: 2.95 ft at 3:00PM Nov 20, 2014Observed: 2.95 ft at 3:15PM Nov 20, 2014Observed: 2.96 ft at 3:30PM Nov 20, 2014Observed: 2.95 ft at 3:45PM Nov 20, 2014Observed: 2.95 ft at 4:00PM Nov 20, 2014Observed: 2.95 ft at 4:15PM Nov 20, 2014Observed: 2.95 ft at 4:30PM Nov 20, 2014Observed: 2.96 ft at 4:45PM Nov 20, 2014Observed: 2.95 ft at 5:00PM Nov 20, 2014Observed: 2.96 ft at 5:15PM Nov 20, 2014Observed: 2.95 ft at 5:30PM Nov 20, 2014Observed: 2.94 ft at 5:45PM Nov 20, 2014Observed: 2.95 ft at 6:00PM Nov 20, 2014Observed: 2.96 ft at 6:15PM Nov 20, 2014Observed: 2.96 ft at 6:30PM Nov 20, 2014Observed: 2.95 ft at 6:45PM Nov 20, 2014Observed: 2.94 ft at 7:00PM Nov 20, 2014Observed: 2.95 ft at 7:15PM Nov 20, 2014Observed: 2.94 ft at 7:30PM Nov 20, 2014Observed: 2.94 ft at 7:45PM Nov 20, 2014Observed: 2.95 ft at 8:00PM Nov 20, 2014Observed: 2.95 ft at 8:15PM Nov 20, 2014Observed: 2.95 ft at 8:30PM Nov 20, 2014Observed: 2.95 ft at 8:45PM Nov 20, 2014Observed: 2.94 ft at 9:00PM Nov 20, 2014Observed: 2.94 ft at 9:15PM Nov 20, 2014Observed: 2.94 ft at 9:30PM Nov 20, 2014Observed: 2.94 ft at 9:45PM Nov 20, 2014Observed: 2.95 ft at 10:00PM Nov 20, 2014Observed: 2.95 ft at 10:15PM Nov 20, 2014Observed: 2.95 ft at 10:30PM Nov 20, 2014Observed: 2.95 ft at 10:45PM Nov 20, 2014Observed: 2.93 ft at 11:00PM Nov 20, 2014Observed: 2.91 ft at 11:15PM Nov 20, 2014Observed: 2.94 ft at 11:30PM Nov 20, 2014Observed: 2.93 ft at 11:45PM Nov 20, 2014Observed: 2.94 ft at 12:00AM Nov 21, 2014Observed: 2.94 ft at 12:15AM Nov 21, 2014Observed: 2.95 ft at 12:30AM Nov 21, 2014Observed: 2.94 ft at 12:45AM Nov 21, 2014Observed: 2.96 ft at 1:00AM Nov 21, 2014Observed: 2.96 ft at 1:15AM Nov 21, 2014Observed: 2.95 ft at 1:30AM Nov 21, 2014Observed: 2.95 ft at 1:45AM Nov 21, 2014Observed: 2.95 ft at 2:00AM Nov 21, 2014Observed: 2.95 ft at 2:15AM Nov 21, 2014Observed: 2.95 ft at 2:30AM Nov 21, 2014Observed: 2.95 ft at 2:45AM Nov 21, 2014Observed: 2.95 ft at 3:00AM Nov 21, 2014Observed: 2.95 ft at 3:15AM Nov 21, 2014Observed: 2.95 ft at 3:30AM Nov 21, 2014Observed: 2.95 ft at 3:45AM Nov 21, 2014Observed: 2.95 ft at 4:00AM Nov 21, 2014Observed: 2.95 ft at 4:15AM Nov 21, 2014Observed: 2.96 ft at 4:30AM Nov 21, 2014Observed: 2.96 ft at 4:45AM Nov 21, 2014Observed: 2.95 ft at 5:00AM Nov 21, 2014Observed: 2.96 ft at 5:15AM Nov 21, 2014Observed: 2.95 ft at 5:30AM Nov 21, 2014Observed: 2.96 ft at 5:45AM Nov 21, 2014Observed: 2.96 ft at 6:00AM Nov 21, 2014Observed: 2.96 ft at 6:15AM Nov 21, 2014Observed: 2.96 ft at 6:30AM Nov 21, 2014Observed: 2.96 ft at 6:45AM Nov 21, 2014Observed: 2.96 ft at 7:00AM Nov 21, 2014Observed: 2.95 ft at 7:15AM Nov 21, 2014Observed: 2.96 ft at 7:30AM Nov 21, 2014Observed: 2.95 ft at 7:45AM Nov 21, 2014Observed: 2.97 ft at 8:00AM Nov 21, 2014Observed: 2.97 ft at 8:15AM Nov 21, 2014Observed: 2.95 ft at 8:30AM Nov 21, 2014Observed: 2.97 ft at 8:45AM Nov 21, 2014Observed: 2.95 ft at 9:00AM Nov 21, 2014Observed: 2.95 ft at 9:15AM Nov 21, 2014Observed: 2.96 ft at 9:30AM Nov 21, 2014Observed: 2.9 ft at 9:45AM Nov 21, 2014Observed: 2.91 ft at 10:00AM Nov 21, 2014Observed: 2.9 ft at 10:15AM Nov 21, 2014Observed: 2.93 ft at 10:30AM Nov 21, 2014Observed: 2.95 ft at 10:45AM Nov 21, 2014Observed: 2.92 ft at 11:00AM Nov 21, 2014Observed: 2.93 ft at 11:15AM Nov 21, 2014Observed: 2.92 ft at 11:30AM Nov 21, 2014Observed: 2.93 ft at 11:45AM Nov 21, 2014Observed: 2.93 ft at 12:00PM Nov 21, 2014Observed: 2.93 ft at 12:15PM Nov 21, 2014Observed: 2.96 ft at 12:30PM Nov 21, 2014Observed: 2.96 ft at 12:45PM Nov 21, 2014Observed: 2.92 ft at 1:00PM Nov 21, 2014Observed: 2.94 ft at 1:15PM Nov 21, 2014Observed: 2.94 ft at 1:30PM Nov 21, 2014Observed: 2.95 ft at 1:45PM Nov 21, 2014Observed: 2.94 ft at 2:00PM Nov 21, 2014Observed: 2.95 ft at 2:15PM Nov 21, 2014Observed: 2.95 ft at 2:30PM Nov 21, 2014Observed: 2.95 ft at 2:45PM Nov 21, 2014Observed: 2.95 ft at 3:00PM Nov 21, 2014Observed: 2.93 ft at 3:15PM Nov 21, 2014Observed: 2.96 ft at 3:30PM Nov 21, 2014Observed: 2.95 ft at 3:45PM Nov 21, 2014Observed: 2.93 ft at 4:00PM Nov 21, 2014Observed: 2.94 ft at 4:15PM Nov 21, 2014Observed: 2.94 ft at 4:30PM Nov 21, 2014Observed: 2.94 ft at 4:45PM Nov 21, 2014Observed: 2.94 ft at 5:00PM Nov 21, 2014Observed: 2.93 ft at 5:15PM Nov 21, 2014Observed: 2.94 ft at 5:30PM Nov 21, 2014Observed: 2.94 ft at 5:45PM Nov 21, 2014Observed: 2.94 ft at 6:00PM Nov 21, 2014Observed: 2.94 ft at 6:15PM Nov 21, 2014Observed: 2.93 ft at 6:30PM Nov 21, 2014Observed: 2.94 ft at 6:45PM Nov 21, 2014Observed: 2.94 ft at 7:00PM Nov 21, 2014Observed: 2.94 ft at 7:15PM Nov 21, 2014Observed: 2.94 ft at 7:30PM Nov 21, 2014Observed: 2.94 ft at 7:45PM Nov 21, 2014Observed: 2.94 ft at 8:00PM Nov 21, 2014Observed: 2.94 ft at 8:15PM Nov 21, 2014Observed: 2.94 ft at 8:30PM Nov 21, 2014Observed: 2.94 ft at 8:45PM Nov 21, 2014Observed: 2.94 ft at 9:00PM Nov 21, 2014Observed: 2.94 ft at 9:15PM Nov 21, 2014Observed: 2.94 ft at 9:30PM Nov 21, 2014Observed: 2.94 ft at 9:45PM Nov 21, 2014Observed: 2.94 ft at 10:00PM Nov 21, 2014Observed: 2.95 ft at 10:15PM Nov 21, 2014Observed: 2.94 ft at 10:30PM Nov 21, 2014Observed: 2.94 ft at 10:45PM Nov 21, 2014Observed: 2.94 ft at 11:00PM Nov 21, 2014Observed: 2.94 ft at 11:15PM Nov 21, 2014Observed: 2.94 ft at 11:30PM Nov 21, 2014Observed: 2.94 ft at 11:45PM Nov 21, 2014Observed: 2.94 ft at 12:00AM Nov 22, 2014Observed: 2.94 ft at 12:15AM Nov 22, 2014Observed: 2.94 ft at 12:30AM Nov 22, 2014Observed: 2.94 ft at 12:45AM Nov 22, 2014Observed: 2.94 ft at 1:00AM Nov 22, 2014Observed: 2.94 ft at 1:15AM Nov 22, 2014Observed: 2.94 ft at 1:30AM Nov 22, 2014Observed: 2.93 ft at 1:45AM Nov 22, 2014Observed: 2.93 ft at 2:00AM Nov 22, 2014Observed: 2.93 ft at 2:15AM Nov 22, 2014Observed: 2.93 ft at 2:30AM Nov 22, 2014Observed: 2.93 ft at 2:45AM Nov 22, 2014Highest Forecast: 2.9 ft 7:00AM Nov 22, 2014Highest Forecast: 2.9 ft 1:00PM Nov 22, 2014Highest Forecast: 2.9 ft 7:00PM Nov 22, 2014Highest Forecast: 2.9 ft 1:00AM Nov 23, 2014Highest Forecast: 2.9 ft 7:00AM Nov 23, 2014Highest Forecast: 2.9 ft 1:00PM Nov 23, 2014Highest Forecast: 2.9 ft 7:00PM Nov 23, 2014Highest Forecast: 2.9 ft 1:00AM Nov 24, 2014Highest Forecast: 2.9 ft 7:00AM Nov 24, 2014USGS--Water Resources of the United StatesBRKM2(plotting HGIRG) Graph Created (3:50AM Nov 22, 2014)ObservedForecast (issued 10:08AM Nov 21)Latest observed value: 2.93 ft at 2:45 AM EST 22-Nov-2014. Flood Stage is 10 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EST)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts for the Potomac River near Washington DC (Little Falls) are issued routinely year-round.
Return to Area Map
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
Low Stage (in feet): 0

Historic 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.

Recent Crests
(1) 11.70 ft on 05/18/2014
(2) 10.33 ft on 10/31/2012
(3) 9.78 ft on 09/09/2011
(4) 11.30 ft on 05/20/2011
(5) 11.68 ft on 04/18/2011
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.

Zoom Level:14
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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.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
17 Water overflows the overlooks at Great Falls National Park and approaches the lower level of the visitors center. Most of the C&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&O Canal.
11 Water covers the towpath between Swains Lock and Pennyfield Lock, mileposts 17 to 19 on the C&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 the 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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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
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: 20-Nov-2014 2:01 AM
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