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Hydrograph River at a Glance Download
Potomac River near Washington DC (Little Falls) Stage (ft)Flow (kcfs)Observed: 3.22 ft at 11:45PM Oct 15, 2014Observed: 3.22 ft at 12:00AM Oct 16, 2014Observed: 3.23 ft at 12:15AM Oct 16, 2014Observed: 3.24 ft at 12:30AM Oct 16, 2014Observed: 3.24 ft at 12:45AM Oct 16, 2014Observed: 3.24 ft at 1:00AM Oct 16, 2014Observed: 3.25 ft at 1:15AM Oct 16, 2014Observed: 3.26 ft at 1:30AM Oct 16, 2014Observed: 3.26 ft at 1:45AM Oct 16, 2014Observed: 3.27 ft at 2:00AM Oct 16, 2014Observed: 3.27 ft at 2:15AM Oct 16, 2014Observed: 3.27 ft at 2:30AM Oct 16, 2014Observed: 3.28 ft at 2:45AM Oct 16, 2014Observed: 3.29 ft at 3:00AM Oct 16, 2014Observed: 3.29 ft at 3:15AM Oct 16, 2014Observed: 3.29 ft at 3:30AM Oct 16, 2014Observed: 3.3 ft at 3:45AM Oct 16, 2014Observed: 3.3 ft at 4:00AM Oct 16, 2014Observed: 3.3 ft at 4:15AM Oct 16, 2014Observed: 3.31 ft at 4:30AM Oct 16, 2014Observed: 3.31 ft at 4:45AM Oct 16, 2014Observed: 3.32 ft at 5:00AM Oct 16, 2014Observed: 3.32 ft at 5:15AM Oct 16, 2014Observed: 3.31 ft at 5:30AM Oct 16, 2014Observed: 3.31 ft at 5:45AM Oct 16, 2014Observed: 3.31 ft at 6:00AM Oct 16, 2014Observed: 3.31 ft at 6:15AM Oct 16, 2014Observed: 3.32 ft at 6:30AM Oct 16, 2014Observed: 3.32 ft at 6:45AM Oct 16, 2014Observed: 3.33 ft at 7:00AM Oct 16, 2014Observed: 3.32 ft at 7:15AM Oct 16, 2014Observed: 3.32 ft at 7:30AM Oct 16, 2014Observed: 3.34 ft at 7:45AM Oct 16, 2014Observed: 3.34 ft at 8:00AM Oct 16, 2014Observed: 3.34 ft at 8:15AM Oct 16, 2014Observed: 3.34 ft at 8:30AM Oct 16, 2014Observed: 3.34 ft at 8:45AM Oct 16, 2014Observed: 3.34 ft at 9:00AM Oct 16, 2014Observed: 3.35 ft at 9:15AM Oct 16, 2014Observed: 3.36 ft at 9:30AM Oct 16, 2014Observed: 3.36 ft at 9:45AM Oct 16, 2014Observed: 3.37 ft at 10:00AM Oct 16, 2014Observed: 3.38 ft at 10:15AM Oct 16, 2014Observed: 3.38 ft at 10:30AM Oct 16, 2014Observed: 3.38 ft at 10:45AM Oct 16, 2014Observed: 3.39 ft at 11:00AM Oct 16, 2014Observed: 3.4 ft at 11:15AM Oct 16, 2014Observed: 3.41 ft at 11:30AM Oct 16, 2014Observed: 3.42 ft at 11:45AM Oct 16, 2014Observed: 3.44 ft at 12:00PM Oct 16, 2014Observed: 3.45 ft at 12:15PM Oct 16, 2014Observed: 3.46 ft at 12:30PM Oct 16, 2014Observed: 3.47 ft at 12:45PM Oct 16, 2014Observed: 3.48 ft at 1:00PM Oct 16, 2014Observed: 3.5 ft at 1:15PM Oct 16, 2014Observed: 3.51 ft at 1:30PM Oct 16, 2014Observed: 3.53 ft at 1:45PM Oct 16, 2014Observed: 3.54 ft at 2:00PM Oct 16, 2014Observed: 3.55 ft at 2:15PM Oct 16, 2014Observed: 3.56 ft at 2:30PM Oct 16, 2014Observed: 3.58 ft at 2:45PM Oct 16, 2014Observed: 3.59 ft at 3:00PM Oct 16, 2014Observed: 3.6 ft at 3:15PM Oct 16, 2014Observed: 3.6 ft at 3:30PM Oct 16, 2014Observed: 3.62 ft at 3:45PM Oct 16, 2014Observed: 3.63 ft at 4:00PM Oct 16, 2014Observed: 3.64 ft at 4:15PM Oct 16, 2014Observed: 3.65 ft at 4:30PM Oct 16, 2014Observed: 3.67 ft at 4:45PM Oct 16, 2014Observed: 3.67 ft at 5:00PM Oct 16, 2014Observed: 3.68 ft at 5:15PM Oct 16, 2014Observed: 3.68 ft at 5:30PM Oct 16, 2014Observed: 3.7 ft at 5:45PM Oct 16, 2014Observed: 3.69 ft at 6:00PM Oct 16, 2014Observed: 3.7 ft at 6:15PM Oct 16, 2014Observed: 3.71 ft at 6:30PM Oct 16, 2014Observed: 3.72 ft at 6:45PM Oct 16, 2014Observed: 3.72 ft at 7:00PM Oct 16, 2014Observed: 3.72 ft at 7:15PM Oct 16, 2014Observed: 3.73 ft at 7:30PM Oct 16, 2014Observed: 3.73 ft at 7:45PM Oct 16, 2014Observed: 3.74 ft at 8:00PM Oct 16, 2014Observed: 3.73 ft at 8:15PM Oct 16, 2014Observed: 3.74 ft at 8:30PM Oct 16, 2014Observed: 3.74 ft at 8:45PM Oct 16, 2014Observed: 3.74 ft at 9:00PM Oct 16, 2014Observed: 3.74 ft at 9:15PM Oct 16, 2014Observed: 3.75 ft at 9:30PM Oct 16, 2014Observed: 3.75 ft at 9:45PM Oct 16, 2014Observed: 3.76 ft at 10:00PM Oct 16, 2014Observed: 3.75 ft at 10:15PM Oct 16, 2014Observed: 3.76 ft at 10:30PM Oct 16, 2014Observed: 3.77 ft at 10:45PM Oct 16, 2014Observed: 3.76 ft at 11:00PM Oct 16, 2014Observed: 3.77 ft at 11:15PM Oct 16, 2014Observed: 3.77 ft at 11:30PM Oct 16, 2014Observed: 3.78 ft at 11:45PM Oct 16, 2014Observed: 3.77 ft at 12:00AM Oct 17, 2014Observed: 3.76 ft at 12:15AM Oct 17, 2014Observed: 3.77 ft at 12:30AM Oct 17, 2014Observed: 3.77 ft at 12:45AM Oct 17, 2014Observed: 3.77 ft at 1:00AM Oct 17, 2014Observed: 3.77 ft at 1:15AM Oct 17, 2014Observed: 3.77 ft at 1:30AM Oct 17, 2014Observed: 3.77 ft at 1:45AM Oct 17, 2014Observed: 3.77 ft at 2:00AM Oct 17, 2014Observed: 3.77 ft at 2:15AM Oct 17, 2014Observed: 3.77 ft at 2:30AM Oct 17, 2014Observed: 3.77 ft at 2:45AM Oct 17, 2014Observed: 3.77 ft at 3:00AM Oct 17, 2014Observed: 3.77 ft at 3:15AM Oct 17, 2014Observed: 3.77 ft at 3:30AM Oct 17, 2014Observed: 3.77 ft at 3:45AM Oct 17, 2014Observed: 3.76 ft at 4:00AM Oct 17, 2014Observed: 3.77 ft at 4:15AM Oct 17, 2014Observed: 3.77 ft at 4:30AM Oct 17, 2014Observed: 3.76 ft at 4:45AM Oct 17, 2014Observed: 3.77 ft at 5:00AM Oct 17, 2014Observed: 3.77 ft at 5:15AM Oct 17, 2014Observed: 3.77 ft at 5:30AM Oct 17, 2014Observed: 3.76 ft at 5:45AM Oct 17, 2014Observed: 3.77 ft at 6:00AM Oct 17, 2014Observed: 3.76 ft at 6:15AM Oct 17, 2014Observed: 3.77 ft at 6:30AM Oct 17, 2014Observed: 3.77 ft at 6:45AM Oct 17, 2014Observed: 3.77 ft at 7:00AM Oct 17, 2014Observed: 3.78 ft at 7:15AM Oct 17, 2014Observed: 3.78 ft at 7:30AM Oct 17, 2014Observed: 3.78 ft at 7:45AM Oct 17, 2014Observed: 3.78 ft at 8:00AM Oct 17, 2014Observed: 3.78 ft at 8:15AM Oct 17, 2014Observed: 3.79 ft at 8:30AM Oct 17, 2014Observed: 3.79 ft at 8:45AM Oct 17, 2014Observed: 3.79 ft at 9:00AM Oct 17, 2014Observed: 3.8 ft at 9:15AM Oct 17, 2014Observed: 3.8 ft at 9:30AM Oct 17, 2014Observed: 3.81 ft at 9:45AM Oct 17, 2014Observed: 3.82 ft at 10:00AM Oct 17, 2014Observed: 3.82 ft at 10:15AM Oct 17, 2014Observed: 3.83 ft at 10:30AM Oct 17, 2014Observed: 3.84 ft at 10:45AM Oct 17, 2014Observed: 3.84 ft at 11:00AM Oct 17, 2014Observed: 3.86 ft at 11:15AM Oct 17, 2014Observed: 3.86 ft at 11:30AM Oct 17, 2014Observed: 3.86 ft at 11:45AM Oct 17, 2014Observed: 3.88 ft at 12:00PM Oct 17, 2014Observed: 3.88 ft at 12:15PM Oct 17, 2014Observed: 3.89 ft at 12:30PM Oct 17, 2014Observed: 3.9 ft at 12:45PM Oct 17, 2014Observed: 3.91 ft at 1:00PM Oct 17, 2014Observed: 3.92 ft at 1:15PM Oct 17, 2014Observed: 3.93 ft at 1:30PM Oct 17, 2014Observed: 3.94 ft at 1:45PM Oct 17, 2014Observed: 3.94 ft at 2:00PM Oct 17, 2014Observed: 3.95 ft at 2:15PM Oct 17, 2014Observed: 3.95 ft at 2:30PM Oct 17, 2014Observed: 3.97 ft at 2:45PM Oct 17, 2014Observed: 3.97 ft at 3:00PM Oct 17, 2014Observed: 3.97 ft at 3:15PM Oct 17, 2014Observed: 3.99 ft at 3:30PM Oct 17, 2014Observed: 4 ft at 3:45PM Oct 17, 2014Observed: 4 ft at 4:00PM Oct 17, 2014Observed: 4 ft at 4:15PM Oct 17, 2014Observed: 4 ft at 4:30PM Oct 17, 2014Observed: 4.02 ft at 4:45PM Oct 17, 2014Observed: 4.03 ft at 5:00PM Oct 17, 2014Observed: 4.03 ft at 5:15PM Oct 17, 2014Observed: 4.03 ft at 5:30PM Oct 17, 2014Observed: 4.03 ft at 5:45PM Oct 17, 2014Observed: 4.03 ft at 6:00PM Oct 17, 2014Observed: 4.04 ft at 6:15PM Oct 17, 2014Observed: 4.03 ft at 6:30PM Oct 17, 2014Observed: 4.04 ft at 6:45PM Oct 17, 2014Observed: 4.04 ft at 7:00PM Oct 17, 2014Observed: 4.04 ft at 7:15PM Oct 17, 2014Observed: 4.04 ft at 7:30PM Oct 17, 2014Observed: 4.05 ft at 7:45PM Oct 17, 2014Observed: 4.05 ft at 8:00PM Oct 17, 2014Highest Observation: 4.06 ft at 8:15PM Oct 17, 2014Observed: 4.05 ft at 8:30PM Oct 17, 2014Observed: 4.05 ft at 8:45PM Oct 17, 2014Highest Observation: 4.06 ft at 9:00PM Oct 17, 2014Observed: 4.05 ft at 9:15PM Oct 17, 2014Observed: 4.05 ft at 9:30PM Oct 17, 2014Observed: 4.05 ft at 9:45PM Oct 17, 2014Observed: 4.05 ft at 10:00PM Oct 17, 2014Observed: 4.05 ft at 10:15PM Oct 17, 2014Observed: 4.05 ft at 10:30PM Oct 17, 2014Observed: 4.05 ft at 10:45PM Oct 17, 2014Observed: 4.05 ft at 11:00PM Oct 17, 2014Observed: 4.04 ft at 11:15PM Oct 17, 2014Observed: 4.04 ft at 11:30PM Oct 17, 2014Observed: 4.04 ft at 11:45PM Oct 17, 2014Observed: 4.04 ft at 12:00AM Oct 18, 2014Observed: 4.03 ft at 12:15AM Oct 18, 2014Observed: 4.03 ft at 12:30AM Oct 18, 2014Observed: 4.04 ft at 12:45AM Oct 18, 2014Observed: 4.03 ft at 1:00AM Oct 18, 2014Observed: 4.03 ft at 1:15AM Oct 18, 2014Observed: 4.03 ft at 1:30AM Oct 18, 2014Observed: 4.03 ft at 1:45AM Oct 18, 2014Observed: 4.02 ft at 2:00AM Oct 18, 2014Observed: 4.03 ft at 2:15AM Oct 18, 2014Observed: 4.02 ft at 2:30AM Oct 18, 2014Observed: 4.01 ft at 2:45AM Oct 18, 2014Observed: 4.02 ft at 3:00AM Oct 18, 2014Observed: 4.02 ft at 3:15AM Oct 18, 2014Observed: 4.01 ft at 3:30AM Oct 18, 2014Observed: 4 ft at 3:45AM Oct 18, 2014Observed: 4 ft at 4:00AM Oct 18, 2014Observed: 4.01 ft at 4:15AM Oct 18, 2014Observed: 4 ft at 4:30AM Oct 18, 2014Observed: 4 ft at 4:45AM Oct 18, 2014Observed: 4 ft at 5:00AM Oct 18, 2014Observed: 3.99 ft at 5:15AM Oct 18, 2014Observed: 3.99 ft at 5:30AM Oct 18, 2014Observed: 3.99 ft at 5:45AM Oct 18, 2014Observed: 3.98 ft at 6:00AM Oct 18, 2014Observed: 3.98 ft at 6:15AM Oct 18, 2014Observed: 3.98 ft at 6:30AM Oct 18, 2014Observed: 3.97 ft at 6:45AM Oct 18, 2014Observed: 3.98 ft at 7:00AM Oct 18, 2014Observed: 3.97 ft at 7:15AM Oct 18, 2014Observed: 3.97 ft at 7:30AM Oct 18, 2014Observed: 3.97 ft at 7:45AM Oct 18, 2014Observed: 3.97 ft at 8:00AM Oct 18, 2014Observed: 3.97 ft at 8:15AM Oct 18, 2014Observed: 3.96 ft at 8:30AM Oct 18, 2014Observed: 3.96 ft at 8:45AM Oct 18, 2014Observed: 3.95 ft at 9:00AM Oct 18, 2014Observed: 3.96 ft at 9:15AM Oct 18, 2014Observed: 3.96 ft at 9:30AM Oct 18, 2014Observed: 3.95 ft at 9:45AM Oct 18, 2014Observed: 3.96 ft at 10:00AM Oct 18, 2014Observed: 3.95 ft at 10:15AM Oct 18, 2014Observed: 3.94 ft at 10:30AM Oct 18, 2014Observed: 3.96 ft at 10:45AM Oct 18, 2014Observed: 3.94 ft at 11:00AM Oct 18, 2014Observed: 3.93 ft at 11:15AM Oct 18, 2014Observed: 3.94 ft at 11:30AM Oct 18, 2014Observed: 3.96 ft at 11:45AM Oct 18, 2014Observed: 3.93 ft at 12:00PM Oct 18, 2014Observed: 3.93 ft at 12:15PM Oct 18, 2014Observed: 3.93 ft at 12:30PM Oct 18, 2014Observed: 3.91 ft at 12:45PM Oct 18, 2014Observed: 3.91 ft at 1:00PM Oct 18, 2014Observed: 3.93 ft at 1:15PM Oct 18, 2014Observed: 3.91 ft at 1:30PM Oct 18, 2014Observed: 3.93 ft at 1:45PM Oct 18, 2014Observed: 3.92 ft at 2:00PM Oct 18, 2014Observed: 3.92 ft at 2:15PM Oct 18, 2014Observed: 3.94 ft at 2:30PM Oct 18, 2014Observed: 3.9 ft at 2:45PM Oct 18, 2014Observed: 3.91 ft at 3:00PM Oct 18, 2014Observed: 3.91 ft at 3:15PM Oct 18, 2014Observed: 3.9 ft at 3:30PM Oct 18, 2014Observed: 3.9 ft at 3:45PM Oct 18, 2014Observed: 3.91 ft at 4:00PM Oct 18, 2014Observed: 3.92 ft at 4:15PM Oct 18, 2014Observed: 3.91 ft at 4:30PM Oct 18, 2014Observed: 3.91 ft at 4:45PM Oct 18, 2014Observed: 3.91 ft at 5:00PM Oct 18, 2014Observed: 3.88 ft at 5:15PM Oct 18, 2014Observed: 3.9 ft at 5:30PM Oct 18, 2014Observed: 3.89 ft at 5:45PM Oct 18, 2014Observed: 3.89 ft at 6:00PM Oct 18, 2014Observed: 3.89 ft at 6:15PM Oct 18, 2014Observed: 3.89 ft at 6:30PM Oct 18, 2014Observed: 3.89 ft at 6:45PM Oct 18, 2014Observed: 3.88 ft at 7:00PM Oct 18, 2014Observed: 3.87 ft at 7:15PM Oct 18, 2014Observed: 3.88 ft at 7:30PM Oct 18, 2014Observed: 3.87 ft at 7:45PM Oct 18, 2014Observed: 3.87 ft at 8:00PM Oct 18, 2014Observed: 3.87 ft at 8:15PM Oct 18, 2014Observed: 3.86 ft at 8:30PM Oct 18, 2014Observed: 3.86 ft at 8:45PM Oct 18, 2014Observed: 3.86 ft at 9:00PM Oct 18, 2014Observed: 3.85 ft at 9:15PM Oct 18, 2014Observed: 3.85 ft at 9:30PM Oct 18, 2014Observed: 3.84 ft at 9:45PM Oct 18, 2014Observed: 3.84 ft at 10:00PM Oct 18, 2014Observed: 3.84 ft at 10:15PM Oct 18, 2014Observed: 3.83 ft at 10:30PM Oct 18, 2014Observed: 3.83 ft at 10:45PM Oct 18, 2014Observed: 3.83 ft at 11:00PM Oct 18, 2014Observed: 3.83 ft at 11:15PM Oct 18, 2014Observed: 3.82 ft at 11:30PM Oct 18, 2014Observed: 3.82 ft at 11:45PM Oct 18, 2014Observed: 3.81 ft at 12:00AM Oct 19, 2014Observed: 3.81 ft at 12:15AM Oct 19, 2014Observed: 3.81 ft at 12:30AM Oct 19, 2014Observed: 3.81 ft at 12:45AM Oct 19, 2014Observed: 3.8 ft at 1:00AM Oct 19, 2014Observed: 3.8 ft at 1:15AM Oct 19, 2014Observed: 3.8 ft at 1:30AM Oct 19, 2014Observed: 3.8 ft at 1:45AM Oct 19, 2014Observed: 3.79 ft at 2:00AM Oct 19, 2014Observed: 3.8 ft at 2:15AM Oct 19, 2014Observed: 3.79 ft at 2:30AM Oct 19, 2014Observed: 3.8 ft at 2:45AM Oct 19, 2014Observed: 3.79 ft at 3:00AM Oct 19, 2014Observed: 3.79 ft at 3:15AM Oct 19, 2014Observed: 3.79 ft at 3:30AM Oct 19, 2014Observed: 3.79 ft at 3:45AM Oct 19, 2014Observed: 3.78 ft at 4:00AM Oct 19, 2014Observed: 3.77 ft at 4:15AM Oct 19, 2014Observed: 3.78 ft at 4:30AM Oct 19, 2014Observed: 3.78 ft at 4:45AM Oct 19, 2014Observed: 3.77 ft at 5:00AM Oct 19, 2014Observed: 3.78 ft at 5:15AM Oct 19, 2014Observed: 3.78 ft at 5:30AM Oct 19, 2014Observed: 3.77 ft at 5:45AM Oct 19, 2014Observed: 3.77 ft at 6:00AM Oct 19, 2014Observed: 3.77 ft at 6:15AM Oct 19, 2014Observed: 3.76 ft at 6:30AM Oct 19, 2014Observed: 3.77 ft at 6:45AM Oct 19, 2014Observed: 3.76 ft at 7:00AM Oct 19, 2014Observed: 3.75 ft at 7:15AM Oct 19, 2014Observed: 3.75 ft at 7:30AM Oct 19, 2014Observed: 3.75 ft at 7:45AM Oct 19, 2014Observed: 3.74 ft at 8:00AM Oct 19, 2014Observed: 3.74 ft at 8:15AM Oct 19, 2014Observed: 3.74 ft at 8:30AM Oct 19, 2014Observed: 3.74 ft at 8:45AM Oct 19, 2014Observed: 3.72 ft at 9:00AM Oct 19, 2014Observed: 3.74 ft at 9:15AM Oct 19, 2014Observed: 3.76 ft at 9:30AM Oct 19, 2014Observed: 3.73 ft at 9:45AM Oct 19, 2014Observed: 3.73 ft at 10:00AM Oct 19, 2014Observed: 3.69 ft at 10:15AM Oct 19, 2014Observed: 3.74 ft at 10:30AM Oct 19, 2014Observed: 3.69 ft at 10:45AM Oct 19, 2014Observed: 3.73 ft at 11:00AM Oct 19, 2014Observed: 3.73 ft at 11:15AM Oct 19, 2014Observed: 3.72 ft at 11:30AM Oct 19, 2014Observed: 3.73 ft at 11:45AM Oct 19, 2014Observed: 3.74 ft at 12:00PM Oct 19, 2014Observed: 3.68 ft at 12:15PM Oct 19, 2014Observed: 3.7 ft at 12:30PM Oct 19, 2014Observed: 3.71 ft at 12:45PM Oct 19, 2014Observed: 3.7 ft at 1:00PM Oct 19, 2014Observed: 3.68 ft at 1:15PM Oct 19, 2014Observed: 3.69 ft at 1:30PM Oct 19, 2014Observed: 3.7 ft at 1:45PM Oct 19, 2014Observed: 3.7 ft at 2:00PM Oct 19, 2014Observed: 3.7 ft at 2:15PM Oct 19, 2014Observed: 3.68 ft at 2:30PM Oct 19, 2014Observed: 3.7 ft at 2:45PM Oct 19, 2014Observed: 3.71 ft at 3:00PM Oct 19, 2014Observed: 3.68 ft at 3:15PM Oct 19, 2014Observed: 3.69 ft at 3:30PM Oct 19, 2014Observed: 3.69 ft at 3:45PM Oct 19, 2014Observed: 3.69 ft at 4:00PM Oct 19, 2014Observed: 3.66 ft at 4:15PM Oct 19, 2014Observed: 3.66 ft at 4:30PM Oct 19, 2014Observed: 3.67 ft at 4:45PM Oct 19, 2014Observed: 3.67 ft at 5:00PM Oct 19, 2014Observed: 3.66 ft at 5:15PM Oct 19, 2014Observed: 3.66 ft at 5:30PM Oct 19, 2014Observed: 3.65 ft at 5:45PM Oct 19, 2014Observed: 3.65 ft at 6:00PM Oct 19, 2014Observed: 3.64 ft at 6:15PM Oct 19, 2014Observed: 3.63 ft at 6:30PM Oct 19, 2014Observed: 3.63 ft at 6:45PM Oct 19, 2014Observed: 3.63 ft at 7:00PM Oct 19, 2014Observed: 3.63 ft at 7:15PM Oct 19, 2014Observed: 3.63 ft at 7:30PM Oct 19, 2014Observed: 3.63 ft at 7:45PM Oct 19, 2014Observed: 3.62 ft at 8:00PM Oct 19, 2014Observed: 3.61 ft at 8:15PM Oct 19, 2014Observed: 3.62 ft at 8:30PM Oct 19, 2014Observed: 3.62 ft at 8:45PM Oct 19, 2014Observed: 3.61 ft at 9:00PM Oct 19, 2014Observed: 3.61 ft at 9:15PM Oct 19, 2014Observed: 3.61 ft at 9:30PM Oct 19, 2014Observed: 3.61 ft at 9:45PM Oct 19, 2014Observed: 3.6 ft at 10:00PM Oct 19, 2014Observed: 3.6 ft at 10:15PM Oct 19, 2014Observed: 3.6 ft at 10:30PM Oct 19, 2014Observed: 3.6 ft at 10:45PM Oct 19, 2014Observed: 3.6 ft at 11:00PM Oct 19, 2014Observed: 3.59 ft at 11:15PM Oct 19, 2014Observed: 3.59 ft at 11:30PM Oct 19, 2014Observed: 3.59 ft at 11:45PM Oct 19, 2014Observed: 3.59 ft at 12:00AM Oct 20, 2014Observed: 3.58 ft at 12:15AM Oct 20, 2014Observed: 3.58 ft at 12:30AM Oct 20, 2014Observed: 3.58 ft at 12:45AM Oct 20, 2014Observed: 3.58 ft at 1:00AM Oct 20, 2014Observed: 3.58 ft at 1:15AM Oct 20, 2014Observed: 3.57 ft at 1:30AM Oct 20, 2014Observed: 3.57 ft at 1:45AM Oct 20, 2014Observed: 3.58 ft at 2:00AM Oct 20, 2014Observed: 3.57 ft at 2:15AM Oct 20, 2014Observed: 3.57 ft at 2:30AM Oct 20, 2014Observed: 3.58 ft at 2:45AM Oct 20, 2014Observed: 3.58 ft at 3:00AM Oct 20, 2014Observed: 3.57 ft at 3:15AM Oct 20, 2014Observed: 3.57 ft at 3:30AM Oct 20, 2014Observed: 3.57 ft at 3:45AM Oct 20, 2014Observed: 3.57 ft at 4:00AM Oct 20, 2014Observed: 3.56 ft at 4:15AM Oct 20, 2014Observed: 3.57 ft at 4:30AM Oct 20, 2014Observed: 3.57 ft at 4:45AM Oct 20, 2014Observed: 3.57 ft at 5:00AM Oct 20, 2014Observed: 3.57 ft at 5:15AM Oct 20, 2014Observed: 3.56 ft at 5:30AM Oct 20, 2014Observed: 3.56 ft at 5:45AM Oct 20, 2014Observed: 3.56 ft at 6:00AM Oct 20, 2014Observed: 3.57 ft at 6:15AM Oct 20, 2014Observed: 3.56 ft at 6:30AM Oct 20, 2014Observed: 3.56 ft at 6:45AM Oct 20, 2014Observed: 3.56 ft at 7:00AM Oct 20, 2014Observed: 3.56 ft at 7:15AM Oct 20, 2014Observed: 3.56 ft at 7:30AM Oct 20, 2014Observed: 3.55 ft at 7:45AM Oct 20, 2014Observed: 3.55 ft at 8:00AM Oct 20, 2014Observed: 3.56 ft at 8:15AM Oct 20, 2014Observed: 3.56 ft at 8:30AM Oct 20, 2014Observed: 3.55 ft at 8:45AM Oct 20, 2014Observed: 3.56 ft at 9:00AM Oct 20, 2014Observed: 3.56 ft at 9:15AM Oct 20, 2014Observed: 3.56 ft at 9:30AM Oct 20, 2014Observed: 3.55 ft at 9:45AM Oct 20, 2014Observed: 3.55 ft at 10:00AM Oct 20, 2014Observed: 3.55 ft at 10:15AM Oct 20, 2014Observed: 3.54 ft at 10:30AM Oct 20, 2014Observed: 3.55 ft at 10:45AM Oct 20, 2014Observed: 3.54 ft at 11:00AM Oct 20, 2014Observed: 3.54 ft at 11:15AM Oct 20, 2014Observed: 3.55 ft at 11:30AM Oct 20, 2014Observed: 3.55 ft at 11:45AM Oct 20, 2014Observed: 3.55 ft at 12:00PM Oct 20, 2014Observed: 3.53 ft at 12:15PM Oct 20, 2014Observed: 3.54 ft at 12:30PM Oct 20, 2014Observed: 3.54 ft at 12:45PM Oct 20, 2014Observed: 3.53 ft at 1:00PM Oct 20, 2014Observed: 3.54 ft at 1:15PM Oct 20, 2014Observed: 3.53 ft at 1:30PM Oct 20, 2014Observed: 3.52 ft at 1:45PM Oct 20, 2014Observed: 3.53 ft at 2:00PM Oct 20, 2014Observed: 3.53 ft at 2:15PM Oct 20, 2014Observed: 3.52 ft at 2:30PM Oct 20, 2014Observed: 3.51 ft at 2:45PM Oct 20, 2014Observed: 3.51 ft at 3:00PM Oct 20, 2014Observed: 3.51 ft at 3:15PM Oct 20, 2014Observed: 3.5 ft at 3:30PM Oct 20, 2014Observed: 3.5 ft at 3:45PM Oct 20, 2014Observed: 3.5 ft at 4:00PM Oct 20, 2014Observed: 3.49 ft at 4:15PM Oct 20, 2014Observed: 3.49 ft at 4:30PM Oct 20, 2014Observed: 3.48 ft at 4:45PM Oct 20, 2014Observed: 3.48 ft at 5:00PM Oct 20, 2014Observed: 3.47 ft at 5:15PM Oct 20, 2014Observed: 3.47 ft at 5:30PM Oct 20, 2014Observed: 3.47 ft at 5:45PM Oct 20, 2014Observed: 3.46 ft at 6:00PM Oct 20, 2014Observed: 3.46 ft at 6:15PM Oct 20, 2014Observed: 3.45 ft at 6:30PM Oct 20, 2014Observed: 3.45 ft at 6:45PM Oct 20, 2014Observed: 3.44 ft at 7:00PM Oct 20, 2014Observed: 3.45 ft at 7:15PM Oct 20, 2014Observed: 3.44 ft at 7:30PM Oct 20, 2014Observed: 3.44 ft at 7:45PM Oct 20, 2014Observed: 3.43 ft at 8:00PM Oct 20, 2014Observed: 3.43 ft at 8:15PM Oct 20, 2014Observed: 3.43 ft at 8:30PM Oct 20, 2014Observed: 3.43 ft at 8:45PM Oct 20, 2014Observed: 3.42 ft at 9:00PM Oct 20, 2014Observed: 3.42 ft at 9:15PM Oct 20, 2014Observed: 3.42 ft at 9:30PM Oct 20, 2014Observed: 3.41 ft at 9:45PM Oct 20, 2014Observed: 3.41 ft at 10:00PM Oct 20, 2014Observed: 3.41 ft at 10:15PM Oct 20, 2014Observed: 3.4 ft at 10:30PM Oct 20, 2014Observed: 3.4 ft at 10:45PM Oct 20, 2014Highest Forecast: 3.4 ft 2:00AM Oct 21, 2014Forecast: 3.3 ft 8:00AM Oct 21, 2014Forecast: 3.3 ft 2:00PM Oct 21, 2014Forecast: 3.3 ft 8:00PM Oct 21, 2014Forecast: 3.3 ft 2:00AM Oct 22, 2014Forecast: 3.2 ft 8:00AM Oct 22, 2014Forecast: 3.2 ft 2:00PM Oct 22, 2014Forecast: 3.2 ft 8:00PM Oct 22, 2014Forecast: 3.2 ft 2:00AM Oct 23, 2014Forecast: 3.2 ft 8:00AM Oct 23, 2014USGS--Water Resources of the United StatesBRKM2(plotting HGIRG) Graph Created (11:36PM Oct 20, 2014)ObservedForecast (issued 8:54AM Oct 20)Latest observed value: 3.4 ft at 10:45 PM EDT 20-Oct-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.
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

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

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

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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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