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Hydrograph River at a Glance Download
Potomac River near Washington DC (Little Falls) Stage (ft)Flow (kcfs)Observed: 2.84 ft at 12:00AM Sep 15, 2014Observed: 2.84 ft at 12:15AM Sep 15, 2014Observed: 2.84 ft at 12:30AM Sep 15, 2014Highest Observation: 2.85 ft at 12:45AM Sep 15, 2014Highest Observation: 2.85 ft at 1:00AM Sep 15, 2014Observed: 2.84 ft at 1:15AM Sep 15, 2014Observed: 2.84 ft at 1:30AM Sep 15, 2014Observed: 2.84 ft at 1:45AM Sep 15, 2014Highest Observation: 2.85 ft at 2:00AM Sep 15, 2014Observed: 2.84 ft at 2:15AM Sep 15, 2014Observed: 2.84 ft at 2:30AM Sep 15, 2014Observed: 2.84 ft at 2:45AM Sep 15, 2014Observed: 2.84 ft at 3:00AM Sep 15, 2014Observed: 2.84 ft at 3:15AM Sep 15, 2014Observed: 2.84 ft at 3:30AM Sep 15, 2014Observed: 2.84 ft at 3:45AM Sep 15, 2014Observed: 2.84 ft at 4:00AM Sep 15, 2014Observed: 2.84 ft at 4:15AM Sep 15, 2014Observed: 2.84 ft at 4:30AM Sep 15, 2014Observed: 2.83 ft at 4:45AM Sep 15, 2014Observed: 2.84 ft at 5:00AM Sep 15, 2014Observed: 2.84 ft at 5:15AM Sep 15, 2014Observed: 2.84 ft at 5:30AM Sep 15, 2014Observed: 2.83 ft at 5:45AM Sep 15, 2014Observed: 2.83 ft at 6:00AM Sep 15, 2014Observed: 2.84 ft at 6:15AM Sep 15, 2014Observed: 2.84 ft at 6:30AM Sep 15, 2014Observed: 2.84 ft at 6:45AM Sep 15, 2014Observed: 2.83 ft at 7:00AM Sep 15, 2014Observed: 2.83 ft at 7:15AM Sep 15, 2014Observed: 2.84 ft at 7:30AM Sep 15, 2014Observed: 2.84 ft at 7:45AM Sep 15, 2014Observed: 2.83 ft at 8:00AM Sep 15, 2014Observed: 2.84 ft at 8:15AM Sep 15, 2014Observed: 2.83 ft at 8:30AM Sep 15, 2014Observed: 2.84 ft at 8:45AM Sep 15, 2014Observed: 2.84 ft at 9:00AM Sep 15, 2014Observed: 2.84 ft at 9:15AM Sep 15, 2014Observed: 2.84 ft at 9:30AM Sep 15, 2014Observed: 2.83 ft at 9:45AM Sep 15, 2014Observed: 2.83 ft at 10:00AM Sep 15, 2014Observed: 2.84 ft at 10:15AM Sep 15, 2014Observed: 2.84 ft at 10:30AM Sep 15, 2014Observed: 2.84 ft at 10:45AM Sep 15, 2014Observed: 2.84 ft at 11:00AM Sep 15, 2014Observed: 2.84 ft at 11:15AM Sep 15, 2014Observed: 2.84 ft at 11:30AM Sep 15, 2014Observed: 2.84 ft at 11:45AM Sep 15, 2014Observed: 2.84 ft at 12:00PM Sep 15, 2014Observed: 2.84 ft at 12:15PM Sep 15, 2014Highest Observation: 2.85 ft at 12:30PM Sep 15, 2014Highest Observation: 2.85 ft at 12:45PM Sep 15, 2014Observed: 2.84 ft at 1:00PM Sep 15, 2014Observed: 2.84 ft at 1:15PM Sep 15, 2014Observed: 2.84 ft at 1:30PM Sep 15, 2014Highest Observation: 2.85 ft at 1:45PM Sep 15, 2014Highest Observation: 2.85 ft at 2:00PM Sep 15, 2014Highest Observation: 2.85 ft at 2:15PM Sep 15, 2014Highest Observation: 2.85 ft at 2:30PM Sep 15, 2014Highest Observation: 2.85 ft at 2:45PM Sep 15, 2014Highest Observation: 2.85 ft at 3:00PM Sep 15, 2014Highest Observation: 2.85 ft at 3:15PM Sep 15, 2014Observed: 2.84 ft at 3:30PM Sep 15, 2014Observed: 2.84 ft at 3:45PM Sep 15, 2014Observed: 2.84 ft at 4:00PM Sep 15, 2014Observed: 2.84 ft at 4:15PM Sep 15, 2014Observed: 2.84 ft at 4:30PM Sep 15, 2014Observed: 2.83 ft at 4:45PM Sep 15, 2014Observed: 2.82 ft at 5:00PM Sep 15, 2014Observed: 2.83 ft at 5:15PM Sep 15, 2014Observed: 2.82 ft at 5:30PM Sep 15, 2014Observed: 2.83 ft at 5:45PM Sep 15, 2014Observed: 2.83 ft at 6:00PM Sep 15, 2014Observed: 2.82 ft at 6:15PM Sep 15, 2014Observed: 2.82 ft at 6:30PM Sep 15, 2014Observed: 2.82 ft at 6:45PM Sep 15, 2014Observed: 2.81 ft at 7:00PM Sep 15, 2014Observed: 2.81 ft at 7:15PM Sep 15, 2014Observed: 2.81 ft at 7:30PM Sep 15, 2014Observed: 2.81 ft at 7:45PM Sep 15, 2014Observed: 2.81 ft at 8:00PM Sep 15, 2014Observed: 2.81 ft at 8:15PM Sep 15, 2014Observed: 2.81 ft at 8:30PM Sep 15, 2014Observed: 2.81 ft at 8:45PM Sep 15, 2014Observed: 2.81 ft at 9:00PM Sep 15, 2014Observed: 2.81 ft at 9:15PM Sep 15, 2014Observed: 2.81 ft at 9:30PM Sep 15, 2014Observed: 2.81 ft at 9:45PM Sep 15, 2014Observed: 2.81 ft at 10:00PM Sep 15, 2014Observed: 2.81 ft at 10:15PM Sep 15, 2014Observed: 2.8 ft at 10:30PM Sep 15, 2014Observed: 2.81 ft at 10:45PM Sep 15, 2014Observed: 2.81 ft at 11:00PM Sep 15, 2014Observed: 2.81 ft at 11:15PM Sep 15, 2014Observed: 2.8 ft at 11:30PM Sep 15, 2014Observed: 2.81 ft at 11:45PM Sep 15, 2014Observed: 2.81 ft at 12:00AM Sep 16, 2014Observed: 2.81 ft at 12:15AM Sep 16, 2014Observed: 2.8 ft at 12:30AM Sep 16, 2014Observed: 2.8 ft at 12:45AM Sep 16, 2014Observed: 2.8 ft at 1:00AM Sep 16, 2014Observed: 2.8 ft at 1:15AM Sep 16, 2014Observed: 2.8 ft at 1:30AM Sep 16, 2014Observed: 2.8 ft at 1:45AM Sep 16, 2014Observed: 2.8 ft at 2:00AM Sep 16, 2014Observed: 2.79 ft at 2:15AM Sep 16, 2014Observed: 2.79 ft at 2:30AM Sep 16, 2014Observed: 2.8 ft at 2:45AM Sep 16, 2014Observed: 2.8 ft at 3:00AM Sep 16, 2014Observed: 2.8 ft at 3:15AM Sep 16, 2014Observed: 2.8 ft at 3:30AM Sep 16, 2014Observed: 2.8 ft at 3:45AM Sep 16, 2014Observed: 2.8 ft at 4:00AM Sep 16, 2014Observed: 2.8 ft at 4:15AM Sep 16, 2014Observed: 2.8 ft at 4:30AM Sep 16, 2014Observed: 2.8 ft at 4:45AM Sep 16, 2014Observed: 2.8 ft at 5:00AM Sep 16, 2014Observed: 2.8 ft at 5:15AM Sep 16, 2014Observed: 2.8 ft at 5:30AM Sep 16, 2014Observed: 2.8 ft at 5:45AM Sep 16, 2014Observed: 2.81 ft at 6:00AM Sep 16, 2014Observed: 2.8 ft at 6:15AM Sep 16, 2014Observed: 2.81 ft at 6:30AM Sep 16, 2014Observed: 2.8 ft at 6:45AM Sep 16, 2014Observed: 2.81 ft at 7:00AM Sep 16, 2014Observed: 2.8 ft at 7:15AM Sep 16, 2014Observed: 2.8 ft at 7:30AM Sep 16, 2014Observed: 2.81 ft at 7:45AM Sep 16, 2014Observed: 2.8 ft at 8:00AM Sep 16, 2014Observed: 2.81 ft at 8:15AM Sep 16, 2014Observed: 2.8 ft at 8:30AM Sep 16, 2014Observed: 2.8 ft at 8:45AM Sep 16, 2014Observed: 2.8 ft at 9:00AM Sep 16, 2014Observed: 2.8 ft at 9:15AM Sep 16, 2014Observed: 2.8 ft at 9:30AM Sep 16, 2014Observed: 2.8 ft at 9:45AM Sep 16, 2014Observed: 2.8 ft at 10:00AM Sep 16, 2014Observed: 2.8 ft at 10:15AM Sep 16, 2014Observed: 2.8 ft at 10:30AM Sep 16, 2014Observed: 2.8 ft at 10:45AM Sep 16, 2014Observed: 2.79 ft at 11:00AM Sep 16, 2014Observed: 2.8 ft at 11:15AM Sep 16, 2014Observed: 2.81 ft at 11:30AM Sep 16, 2014Observed: 2.8 ft at 11:45AM Sep 16, 2014Observed: 2.81 ft at 12:00PM Sep 16, 2014Observed: 2.81 ft at 12:15PM Sep 16, 2014Observed: 2.8 ft at 12:30PM Sep 16, 2014Observed: 2.79 ft at 12:45PM Sep 16, 2014Observed: 2.81 ft at 1:00PM Sep 16, 2014Observed: 2.81 ft at 1:15PM Sep 16, 2014Observed: 2.79 ft at 1:30PM Sep 16, 2014Observed: 2.82 ft at 1:45PM Sep 16, 2014Observed: 2.81 ft at 2:00PM Sep 16, 2014Observed: 2.82 ft at 2:15PM Sep 16, 2014Observed: 2.82 ft at 2:30PM Sep 16, 2014Observed: 2.81 ft at 2:45PM Sep 16, 2014Observed: 2.8 ft at 3:00PM Sep 16, 2014Observed: 2.81 ft at 3:15PM Sep 16, 2014Observed: 2.82 ft at 3:30PM Sep 16, 2014Observed: 2.81 ft at 3:45PM Sep 16, 2014Observed: 2.81 ft at 4:00PM Sep 16, 2014Observed: 2.81 ft at 4:15PM Sep 16, 2014Observed: 2.81 ft at 4:30PM Sep 16, 2014Observed: 2.82 ft at 4:45PM Sep 16, 2014Observed: 2.82 ft at 5:00PM Sep 16, 2014Observed: 2.81 ft at 5:15PM Sep 16, 2014Observed: 2.81 ft at 5:30PM Sep 16, 2014Observed: 2.82 ft at 5:45PM Sep 16, 2014Observed: 2.82 ft at 6:00PM Sep 16, 2014Observed: 2.82 ft at 6:15PM Sep 16, 2014Observed: 2.81 ft at 6:30PM Sep 16, 2014Observed: 2.82 ft at 6:45PM Sep 16, 2014Observed: 2.82 ft at 7:00PM Sep 16, 2014Observed: 2.82 ft at 7:15PM Sep 16, 2014Observed: 2.82 ft at 7:30PM Sep 16, 2014Observed: 2.83 ft at 7:45PM Sep 16, 2014Observed: 2.83 ft at 8:00PM Sep 16, 2014Observed: 2.83 ft at 8:15PM Sep 16, 2014Observed: 2.83 ft at 8:30PM Sep 16, 2014Observed: 2.83 ft at 8:45PM Sep 16, 2014Observed: 2.83 ft at 9:00PM Sep 16, 2014Observed: 2.83 ft at 9:15PM Sep 16, 2014Observed: 2.83 ft at 9:30PM Sep 16, 2014Observed: 2.84 ft at 9:45PM Sep 16, 2014Observed: 2.84 ft at 10:00PM Sep 16, 2014Observed: 2.84 ft at 10:15PM Sep 16, 2014Observed: 2.84 ft at 10:30PM Sep 16, 2014Observed: 2.84 ft at 10:45PM Sep 16, 2014Observed: 2.84 ft at 11:00PM Sep 16, 2014Observed: 2.84 ft at 11:15PM Sep 16, 2014Observed: 2.84 ft at 11:30PM Sep 16, 2014Observed: 2.84 ft at 11:45PM Sep 16, 2014Observed: 2.83 ft at 12:00AM Sep 17, 2014Observed: 2.84 ft at 12:15AM Sep 17, 2014Observed: 2.83 ft at 12:30AM Sep 17, 2014Observed: 2.83 ft at 12:45AM Sep 17, 2014Observed: 2.83 ft at 1:00AM Sep 17, 2014Observed: 2.83 ft at 1:15AM Sep 17, 2014Observed: 2.83 ft at 1:30AM Sep 17, 2014Observed: 2.83 ft at 1:45AM Sep 17, 2014Observed: 2.83 ft at 2:00AM Sep 17, 2014Observed: 2.83 ft at 2:15AM Sep 17, 2014Observed: 2.83 ft at 2:30AM Sep 17, 2014Observed: 2.83 ft at 2:45AM Sep 17, 2014Observed: 2.82 ft at 3:00AM Sep 17, 2014Observed: 2.82 ft at 3:15AM Sep 17, 2014Observed: 2.82 ft at 3:30AM Sep 17, 2014Observed: 2.82 ft at 3:45AM Sep 17, 2014Observed: 2.82 ft at 4:00AM Sep 17, 2014Observed: 2.82 ft at 4:15AM Sep 17, 2014Observed: 2.82 ft at 4:30AM Sep 17, 2014Observed: 2.82 ft at 4:45AM Sep 17, 2014Observed: 2.82 ft at 5:00AM Sep 17, 2014Observed: 2.81 ft at 5:15AM Sep 17, 2014Observed: 2.8 ft at 5:30AM Sep 17, 2014Observed: 2.8 ft at 5:45AM Sep 17, 2014Observed: 2.79 ft at 6:00AM Sep 17, 2014Observed: 2.79 ft at 6:15AM Sep 17, 2014Observed: 2.79 ft at 6:30AM Sep 17, 2014Observed: 2.79 ft at 6:45AM Sep 17, 2014Observed: 2.79 ft at 7:00AM Sep 17, 2014Observed: 2.79 ft at 7:15AM Sep 17, 2014Observed: 2.79 ft at 7:30AM Sep 17, 2014Observed: 2.79 ft at 7:45AM Sep 17, 2014Observed: 2.79 ft at 8:00AM Sep 17, 2014Observed: 2.8 ft at 8:15AM Sep 17, 2014Observed: 2.79 ft at 8:30AM Sep 17, 2014Observed: 2.79 ft at 8:45AM Sep 17, 2014Observed: 2.79 ft at 9:00AM Sep 17, 2014Observed: 2.79 ft at 9:15AM Sep 17, 2014Observed: 2.79 ft at 9:30AM Sep 17, 2014Observed: 2.79 ft at 9:45AM Sep 17, 2014Observed: 2.79 ft at 10:00AM Sep 17, 2014Observed: 2.79 ft at 10:15AM Sep 17, 2014Observed: 2.8 ft at 10:30AM Sep 17, 2014Observed: 2.8 ft at 10:45AM Sep 17, 2014Observed: 2.8 ft at 11:00AM Sep 17, 2014Observed: 2.81 ft at 11:15AM Sep 17, 2014Observed: 2.81 ft at 11:30AM Sep 17, 2014Observed: 2.81 ft at 11:45AM Sep 17, 2014Observed: 2.81 ft at 12:00PM Sep 17, 2014Observed: 2.81 ft at 12:15PM Sep 17, 2014Observed: 2.82 ft at 12:30PM Sep 17, 2014Observed: 2.81 ft at 12:45PM Sep 17, 2014Observed: 2.82 ft at 1:00PM Sep 17, 2014Observed: 2.81 ft at 1:15PM Sep 17, 2014Observed: 2.82 ft at 1:30PM Sep 17, 2014Observed: 2.81 ft at 1:45PM Sep 17, 2014Observed: 2.81 ft at 2:00PM Sep 17, 2014Observed: 2.82 ft at 2:15PM Sep 17, 2014Observed: 2.82 ft at 2:30PM Sep 17, 2014Observed: 2.81 ft at 2:45PM Sep 17, 2014Observed: 2.81 ft at 3:00PM Sep 17, 2014Observed: 2.81 ft at 3:15PM Sep 17, 2014Observed: 2.81 ft at 3:30PM Sep 17, 2014Observed: 2.81 ft at 3:45PM Sep 17, 2014Observed: 2.8 ft at 4:00PM Sep 17, 2014Observed: 2.8 ft at 4:15PM Sep 17, 2014Observed: 2.8 ft at 4:30PM Sep 17, 2014Observed: 2.81 ft at 4:45PM Sep 17, 2014Observed: 2.81 ft at 5:00PM Sep 17, 2014Observed: 2.81 ft at 5:15PM Sep 17, 2014Observed: 2.81 ft at 5:30PM Sep 17, 2014Observed: 2.81 ft at 5:45PM Sep 17, 2014Observed: 2.81 ft at 6:00PM Sep 17, 2014Observed: 2.81 ft at 6:15PM Sep 17, 2014Observed: 2.82 ft at 6:30PM Sep 17, 2014Observed: 2.81 ft at 6:45PM Sep 17, 2014Observed: 2.81 ft at 7:00PM Sep 17, 2014Observed: 2.81 ft at 7:15PM Sep 17, 2014Observed: 2.81 ft at 7:30PM Sep 17, 2014Observed: 2.81 ft at 7:45PM Sep 17, 2014Observed: 2.8 ft at 8:00PM Sep 17, 2014Observed: 2.8 ft at 8:15PM Sep 17, 2014Observed: 2.8 ft at 8:30PM Sep 17, 2014Observed: 2.79 ft at 8:45PM Sep 17, 2014Observed: 2.79 ft at 9:00PM Sep 17, 2014Observed: 2.78 ft at 9:15PM Sep 17, 2014Observed: 2.79 ft at 9:30PM Sep 17, 2014Observed: 2.78 ft at 9:45PM Sep 17, 2014Observed: 2.78 ft at 10:00PM Sep 17, 2014Observed: 2.78 ft at 10:15PM Sep 17, 2014Observed: 2.77 ft at 10:30PM Sep 17, 2014Observed: 2.77 ft at 10:45PM Sep 17, 2014Observed: 2.77 ft at 11:00PM Sep 17, 2014Observed: 2.77 ft at 11:15PM Sep 17, 2014Observed: 2.76 ft at 11:30PM Sep 17, 2014Observed: 2.77 ft at 11:45PM Sep 17, 2014Observed: 2.76 ft at 12:00AM Sep 18, 2014Observed: 2.76 ft at 12:15AM Sep 18, 2014Observed: 2.77 ft at 12:30AM Sep 18, 2014Observed: 2.76 ft at 12:45AM Sep 18, 2014Observed: 2.76 ft at 1:00AM Sep 18, 2014Observed: 2.76 ft at 1:15AM Sep 18, 2014Observed: 2.76 ft at 1:30AM Sep 18, 2014Observed: 2.77 ft at 1:45AM Sep 18, 2014Observed: 2.76 ft at 2:00AM Sep 18, 2014Observed: 2.76 ft at 2:15AM Sep 18, 2014Observed: 2.76 ft at 2:30AM Sep 18, 2014Observed: 2.76 ft at 2:45AM Sep 18, 2014Observed: 2.76 ft at 3:00AM Sep 18, 2014Observed: 2.76 ft at 3:15AM Sep 18, 2014Observed: 2.76 ft at 3:30AM Sep 18, 2014Observed: 2.76 ft at 3:45AM Sep 18, 2014Observed: 2.77 ft at 4:00AM Sep 18, 2014Observed: 2.77 ft at 4:15AM Sep 18, 2014Observed: 2.78 ft at 4:30AM Sep 18, 2014Observed: 2.78 ft at 4:45AM Sep 18, 2014Observed: 2.79 ft at 5:00AM Sep 18, 2014Observed: 2.79 ft at 5:15AM Sep 18, 2014Observed: 2.79 ft at 5:30AM Sep 18, 2014Observed: 2.79 ft at 5:45AM Sep 18, 2014Observed: 2.79 ft at 6:00AM Sep 18, 2014Observed: 2.78 ft at 6:15AM Sep 18, 2014Observed: 2.79 ft at 6:30AM Sep 18, 2014Observed: 2.79 ft at 6:45AM Sep 18, 2014Observed: 2.79 ft at 7:00AM Sep 18, 2014Observed: 2.79 ft at 7:15AM Sep 18, 2014Observed: 2.79 ft at 7:30AM Sep 18, 2014Observed: 2.79 ft at 7:45AM Sep 18, 2014Observed: 2.8 ft at 8:00AM Sep 18, 2014Observed: 2.79 ft at 8:15AM Sep 18, 2014Observed: 2.8 ft at 8:30AM Sep 18, 2014Observed: 2.79 ft at 8:45AM Sep 18, 2014Observed: 2.79 ft at 9:00AM Sep 18, 2014Observed: 2.77 ft at 9:15AM Sep 18, 2014Observed: 2.77 ft at 9:30AM Sep 18, 2014Observed: 2.77 ft at 9:45AM Sep 18, 2014Observed: 2.77 ft at 10:00AM Sep 18, 2014Observed: 2.76 ft at 10:15AM Sep 18, 2014Observed: 2.77 ft at 10:30AM Sep 18, 2014Observed: 2.76 ft at 10:45AM Sep 18, 2014Observed: 2.76 ft at 11:00AM Sep 18, 2014Observed: 2.76 ft at 11:15AM Sep 18, 2014Observed: 2.77 ft at 11:30AM Sep 18, 2014Observed: 2.76 ft at 11:45AM Sep 18, 2014Observed: 2.76 ft at 12:00PM Sep 18, 2014Observed: 2.75 ft at 12:15PM Sep 18, 2014Observed: 2.75 ft at 12:30PM Sep 18, 2014Observed: 2.76 ft at 12:45PM Sep 18, 2014Observed: 2.75 ft at 1:00PM Sep 18, 2014Observed: 2.76 ft at 1:15PM Sep 18, 2014Observed: 2.75 ft at 1:30PM Sep 18, 2014Observed: 2.75 ft at 1:45PM Sep 18, 2014Observed: 2.75 ft at 2:00PM Sep 18, 2014Observed: 2.75 ft at 2:15PM Sep 18, 2014Observed: 2.76 ft at 2:30PM Sep 18, 2014Observed: 2.76 ft at 2:45PM Sep 18, 2014Observed: 2.76 ft at 3:00PM Sep 18, 2014Observed: 2.75 ft at 3:15PM Sep 18, 2014Observed: 2.76 ft at 3:30PM Sep 18, 2014Observed: 2.76 ft at 3:45PM Sep 18, 2014Observed: 2.76 ft at 4:00PM Sep 18, 2014Observed: 2.76 ft at 4:15PM Sep 18, 2014Observed: 2.77 ft at 4:30PM Sep 18, 2014Observed: 2.78 ft at 4:45PM Sep 18, 2014Observed: 2.79 ft at 5:00PM Sep 18, 2014Observed: 2.8 ft at 5:15PM Sep 18, 2014Observed: 2.8 ft at 5:30PM Sep 18, 2014Observed: 2.8 ft at 5:45PM Sep 18, 2014Observed: 2.8 ft at 6:00PM Sep 18, 2014Observed: 2.8 ft at 6:15PM Sep 18, 2014Observed: 2.8 ft at 6:30PM Sep 18, 2014Observed: 2.8 ft at 6:45PM Sep 18, 2014Observed: 2.8 ft at 7:00PM Sep 18, 2014Observed: 2.79 ft at 7:15PM Sep 18, 2014Observed: 2.79 ft at 7:30PM Sep 18, 2014Observed: 2.79 ft at 7:45PM Sep 18, 2014Observed: 2.78 ft at 8:00PM Sep 18, 2014Observed: 2.78 ft at 8:15PM Sep 18, 2014Observed: 2.78 ft at 8:30PM Sep 18, 2014Observed: 2.78 ft at 8:45PM Sep 18, 2014Observed: 2.78 ft at 9:00PM Sep 18, 2014Observed: 2.78 ft at 9:15PM Sep 18, 2014Observed: 2.78 ft at 9:30PM Sep 18, 2014Observed: 2.78 ft at 9:45PM Sep 18, 2014Observed: 2.77 ft at 10:00PM Sep 18, 2014Observed: 2.78 ft at 10:15PM Sep 18, 2014Observed: 2.78 ft at 10:30PM Sep 18, 2014Observed: 2.78 ft at 10:45PM Sep 18, 2014Observed: 2.78 ft at 11:00PM Sep 18, 2014Observed: 2.78 ft at 11:15PM Sep 18, 2014Observed: 2.78 ft at 11:30PM Sep 18, 2014Observed: 2.78 ft at 11:45PM Sep 18, 2014Observed: 2.78 ft at 12:00AM Sep 19, 2014Observed: 2.78 ft at 12:15AM Sep 19, 2014Observed: 2.78 ft at 12:30AM Sep 19, 2014Observed: 2.79 ft at 12:45AM Sep 19, 2014Observed: 2.79 ft at 1:00AM Sep 19, 2014Observed: 2.78 ft at 1:15AM Sep 19, 2014Observed: 2.79 ft at 1:30AM Sep 19, 2014Observed: 2.79 ft at 1:45AM Sep 19, 2014Observed: 2.78 ft at 2:00AM Sep 19, 2014Observed: 2.78 ft at 2:15AM Sep 19, 2014Observed: 2.79 ft at 2:30AM Sep 19, 2014Observed: 2.79 ft at 2:45AM Sep 19, 2014Observed: 2.79 ft at 3:00AM Sep 19, 2014Observed: 2.79 ft at 3:15AM Sep 19, 2014Observed: 2.78 ft at 3:30AM Sep 19, 2014Observed: 2.78 ft at 3:45AM Sep 19, 2014Observed: 2.79 ft at 4:00AM Sep 19, 2014Observed: 2.78 ft at 4:15AM Sep 19, 2014Observed: 2.78 ft at 4:30AM Sep 19, 2014Observed: 2.78 ft at 4:45AM Sep 19, 2014Observed: 2.78 ft at 5:00AM Sep 19, 2014Observed: 2.78 ft at 5:15AM Sep 19, 2014Observed: 2.78 ft at 5:30AM Sep 19, 2014Observed: 2.78 ft at 5:45AM Sep 19, 2014Observed: 2.79 ft at 6:00AM Sep 19, 2014Observed: 2.78 ft at 6:15AM Sep 19, 2014Observed: 2.78 ft at 6:30AM Sep 19, 2014Observed: 2.78 ft at 6:45AM Sep 19, 2014Observed: 2.79 ft at 7:00AM Sep 19, 2014Observed: 2.78 ft at 7:15AM Sep 19, 2014Observed: 2.78 ft at 7:30AM Sep 19, 2014Observed: 2.78 ft at 7:45AM Sep 19, 2014Observed: 2.78 ft at 8:00AM Sep 19, 2014Observed: 2.78 ft at 8:15AM Sep 19, 2014Observed: 2.78 ft at 8:30AM Sep 19, 2014Observed: 2.78 ft at 8:45AM Sep 19, 2014Observed: 2.78 ft at 9:00AM Sep 19, 2014Observed: 2.78 ft at 9:15AM Sep 19, 2014Observed: 2.78 ft at 9:30AM Sep 19, 2014Observed: 2.77 ft at 9:45AM Sep 19, 2014Observed: 2.78 ft at 10:00AM Sep 19, 2014Observed: 2.77 ft at 10:15AM Sep 19, 2014Observed: 2.77 ft at 10:30AM Sep 19, 2014Observed: 2.78 ft at 10:45AM Sep 19, 2014Observed: 2.77 ft at 11:00AM Sep 19, 2014Observed: 2.77 ft at 11:15AM Sep 19, 2014Observed: 2.77 ft at 11:30AM Sep 19, 2014Observed: 2.78 ft at 11:45AM Sep 19, 2014Observed: 2.78 ft at 12:00PM Sep 19, 2014Observed: 2.77 ft at 12:15PM Sep 19, 2014Observed: 2.77 ft at 12:30PM Sep 19, 2014Observed: 2.78 ft at 12:45PM Sep 19, 2014Observed: 2.78 ft at 1:00PM Sep 19, 2014Observed: 2.78 ft at 1:15PM Sep 19, 2014Observed: 2.78 ft at 1:30PM Sep 19, 2014Observed: 2.78 ft at 1:45PM Sep 19, 2014Observed: 2.77 ft at 2:00PM Sep 19, 2014Observed: 2.78 ft at 2:15PM Sep 19, 2014Observed: 2.77 ft at 2:30PM Sep 19, 2014Observed: 2.78 ft at 2:45PM Sep 19, 2014Observed: 2.78 ft at 3:00PM Sep 19, 2014Observed: 2.78 ft at 3:15PM Sep 19, 2014Observed: 2.77 ft at 3:30PM Sep 19, 2014Observed: 2.77 ft at 3:45PM Sep 19, 2014Observed: 2.77 ft at 4:00PM Sep 19, 2014Observed: 2.77 ft at 4:15PM Sep 19, 2014Observed: 2.77 ft at 4:30PM Sep 19, 2014Observed: 2.77 ft at 4:45PM Sep 19, 2014Observed: 2.77 ft at 5:00PM Sep 19, 2014Observed: 2.77 ft at 5:15PM Sep 19, 2014Observed: 2.78 ft at 5:30PM Sep 19, 2014Observed: 2.77 ft at 5:45PM Sep 19, 2014Observed: 2.78 ft at 6:00PM Sep 19, 2014Observed: 2.77 ft at 6:15PM Sep 19, 2014Observed: 2.77 ft at 6:30PM Sep 19, 2014Observed: 2.77 ft at 6:45PM Sep 19, 2014Observed: 2.77 ft at 7:00PM Sep 19, 2014Observed: 2.77 ft at 7:15PM Sep 19, 2014Observed: 2.77 ft at 7:30PM Sep 19, 2014Observed: 2.77 ft at 7:45PM Sep 19, 2014Observed: 2.77 ft at 8:00PM Sep 19, 2014Observed: 2.77 ft at 8:15PM Sep 19, 2014Observed: 2.77 ft at 8:30PM Sep 19, 2014Observed: 2.76 ft at 8:45PM Sep 19, 2014Observed: 2.77 ft at 9:00PM Sep 19, 2014Observed: 2.77 ft at 9:15PM Sep 19, 2014Observed: 2.77 ft at 9:30PM Sep 19, 2014Observed: 2.78 ft at 9:45PM Sep 19, 2014Observed: 2.77 ft at 10:00PM Sep 19, 2014Observed: 2.77 ft at 10:15PM Sep 19, 2014Observed: 2.77 ft at 10:30PM Sep 19, 2014Observed: 2.77 ft at 10:45PM Sep 19, 2014Highest Forecast: 2.7 ft 2:00AM Sep 20, 2014Highest Forecast: 2.7 ft 8:00AM Sep 20, 2014Highest Forecast: 2.7 ft 2:00PM Sep 20, 2014Highest Forecast: 2.7 ft 8:00PM Sep 20, 2014Highest Forecast: 2.7 ft 2:00AM Sep 21, 2014Highest Forecast: 2.7 ft 8:00AM Sep 21, 2014Highest Forecast: 2.7 ft 2:00PM Sep 21, 2014Highest Forecast: 2.7 ft 8:00PM Sep 21, 2014Highest Forecast: 2.7 ft 2:00AM Sep 22, 2014Highest Forecast: 2.7 ft 8:00AM Sep 22, 2014USGS--Water Resources of the United StatesBRKM2(plotting HGIRG) Graph Created (11:50PM Sep 19, 2014)ObservedForecast (issued 9:15AM Sep 19)Latest observed value: 2.77 ft at 10:45 PM EDT 19-Sep-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: 5-Aug-2014 6:39 PM
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