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Weather Forecast Office (Baltimore/Washington) Sterling, VA Middle Atlantic River Forecast Center
Hydrograph River at a Glance Download Weekly Chance of
Exceeding Levels		 Chance of Exceeding Levels
During Entire Period
Potomac River at Point of Rocks Stage (ft)Flow (kcfs)Highest Observation: 4.84 ft at 4:45PM Jun 14, 2013Observed: 4.83 ft at 5:00PM Jun 14, 2013Observed: 4.83 ft at 5:15PM Jun 14, 2013Observed: 4.82 ft at 5:30PM Jun 14, 2013Observed: 4.81 ft at 5:45PM Jun 14, 2013Observed: 4.81 ft at 6:00PM Jun 14, 2013Observed: 4.8 ft at 6:15PM Jun 14, 2013Observed: 4.79 ft at 6:30PM Jun 14, 2013Observed: 4.79 ft at 6:45PM Jun 14, 2013Observed: 4.78 ft at 7:00PM Jun 14, 2013Observed: 4.77 ft at 7:15PM Jun 14, 2013Observed: 4.76 ft at 7:30PM Jun 14, 2013Observed: 4.75 ft at 7:45PM Jun 14, 2013Observed: 4.74 ft at 8:00PM Jun 14, 2013Observed: 4.73 ft at 8:15PM Jun 14, 2013Observed: 4.72 ft at 8:30PM Jun 14, 2013Observed: 4.71 ft at 8:45PM Jun 14, 2013Observed: 4.7 ft at 9:00PM Jun 14, 2013Observed: 4.69 ft at 9:15PM Jun 14, 2013Observed: 4.68 ft at 9:30PM Jun 14, 2013Observed: 4.67 ft at 9:45PM Jun 14, 2013Observed: 4.66 ft at 10:00PM Jun 14, 2013Observed: 4.65 ft at 10:15PM Jun 14, 2013Observed: 4.64 ft at 10:30PM Jun 14, 2013Observed: 4.63 ft at 10:45PM Jun 14, 2013Observed: 4.61 ft at 11:00PM Jun 14, 2013Observed: 4.61 ft at 11:15PM Jun 14, 2013Observed: 4.6 ft at 11:30PM Jun 14, 2013Observed: 4.58 ft at 11:45PM Jun 14, 2013Observed: 4.58 ft at 12:00AM Jun 15, 2013Observed: 4.57 ft at 12:15AM Jun 15, 2013Observed: 4.56 ft at 12:30AM Jun 15, 2013Observed: 4.55 ft at 12:45AM Jun 15, 2013Observed: 4.54 ft at 1:00AM Jun 15, 2013Observed: 4.53 ft at 1:15AM Jun 15, 2013Observed: 4.52 ft at 1:30AM Jun 15, 2013Observed: 4.51 ft at 1:45AM Jun 15, 2013Observed: 4.5 ft at 2:00AM Jun 15, 2013Observed: 4.49 ft at 2:15AM Jun 15, 2013Observed: 4.48 ft at 2:30AM Jun 15, 2013Observed: 4.47 ft at 2:45AM Jun 15, 2013Observed: 4.46 ft at 3:00AM Jun 15, 2013Observed: 4.45 ft at 3:15AM Jun 15, 2013Observed: 4.45 ft at 3:30AM Jun 15, 2013Observed: 4.43 ft at 3:45AM Jun 15, 2013Observed: 4.43 ft at 4:00AM Jun 15, 2013Observed: 4.42 ft at 4:15AM Jun 15, 2013Observed: 4.41 ft at 4:30AM Jun 15, 2013Observed: 4.4 ft at 4:45AM Jun 15, 2013Observed: 4.39 ft at 5:00AM Jun 15, 2013Observed: 4.38 ft at 5:15AM Jun 15, 2013Observed: 4.37 ft at 5:30AM Jun 15, 2013Observed: 4.36 ft at 5:45AM Jun 15, 2013Observed: 4.35 ft at 6:00AM Jun 15, 2013Observed: 4.34 ft at 6:15AM Jun 15, 2013Observed: 4.33 ft at 6:30AM Jun 15, 2013Observed: 4.32 ft at 6:45AM Jun 15, 2013Observed: 4.31 ft at 7:00AM Jun 15, 2013Observed: 4.3 ft at 7:15AM Jun 15, 2013Observed: 4.3 ft at 7:30AM Jun 15, 2013Observed: 4.29 ft at 7:45AM Jun 15, 2013Observed: 4.28 ft at 8:00AM Jun 15, 2013Observed: 4.27 ft at 8:15AM Jun 15, 2013Observed: 4.26 ft at 8:30AM Jun 15, 2013Observed: 4.25 ft at 8:45AM Jun 15, 2013Observed: 4.25 ft at 9:00AM Jun 15, 2013Observed: 4.24 ft at 9:15AM Jun 15, 2013Observed: 4.24 ft at 9:30AM Jun 15, 2013Observed: 4.23 ft at 9:45AM Jun 15, 2013Observed: 4.22 ft at 10:00AM Jun 15, 2013Observed: 4.22 ft at 10:15AM Jun 15, 2013Observed: 4.21 ft at 10:30AM Jun 15, 2013Observed: 4.21 ft at 10:45AM Jun 15, 2013Observed: 4.2 ft at 11:00AM Jun 15, 2013Observed: 4.19 ft at 11:15AM Jun 15, 2013Observed: 4.19 ft at 11:30AM Jun 15, 2013Observed: 4.18 ft at 11:45AM Jun 15, 2013Observed: 4.18 ft at 12:00PM Jun 15, 2013Observed: 4.18 ft at 12:15PM Jun 15, 2013Observed: 4.17 ft at 12:30PM Jun 15, 2013Observed: 4.17 ft at 12:45PM Jun 15, 2013Observed: 4.17 ft at 1:00PM Jun 15, 2013Observed: 4.17 ft at 1:15PM Jun 15, 2013Observed: 4.17 ft at 1:30PM Jun 15, 2013Observed: 4.18 ft at 1:45PM Jun 15, 2013Observed: 4.18 ft at 2:00PM Jun 15, 2013Observed: 4.18 ft at 2:15PM Jun 15, 2013Observed: 4.19 ft at 2:30PM Jun 15, 2013Observed: 4.2 ft at 2:45PM Jun 15, 2013Observed: 4.2 ft at 3:00PM Jun 15, 2013Observed: 4.21 ft at 3:15PM Jun 15, 2013Observed: 4.21 ft at 3:30PM Jun 15, 2013Observed: 4.22 ft at 3:45PM Jun 15, 2013Observed: 4.23 ft at 4:00PM Jun 15, 2013Observed: 4.24 ft at 4:15PM Jun 15, 2013Observed: 4.25 ft at 4:30PM Jun 15, 2013Observed: 4.26 ft at 4:45PM Jun 15, 2013Observed: 4.27 ft at 5:00PM Jun 15, 2013Observed: 4.28 ft at 5:15PM Jun 15, 2013Observed: 4.29 ft at 5:30PM Jun 15, 2013Observed: 4.31 ft at 5:45PM Jun 15, 2013Observed: 4.32 ft at 6:00PM Jun 15, 2013Observed: 4.33 ft at 6:15PM Jun 15, 2013Observed: 4.35 ft at 6:30PM Jun 15, 2013Observed: 4.36 ft at 6:45PM Jun 15, 2013Observed: 4.37 ft at 7:00PM Jun 15, 2013Observed: 4.38 ft at 7:15PM Jun 15, 2013Observed: 4.4 ft at 7:30PM Jun 15, 2013Observed: 4.41 ft at 7:45PM Jun 15, 2013Observed: 4.42 ft at 8:00PM Jun 15, 2013Observed: 4.43 ft at 8:15PM Jun 15, 2013Observed: 4.45 ft at 8:30PM Jun 15, 2013Observed: 4.46 ft at 8:45PM Jun 15, 2013Observed: 4.47 ft at 9:00PM Jun 15, 2013Observed: 4.48 ft at 9:15PM Jun 15, 2013Observed: 4.49 ft at 9:30PM Jun 15, 2013Observed: 4.5 ft at 9:45PM Jun 15, 2013Observed: 4.51 ft at 10:00PM Jun 15, 2013Observed: 4.53 ft at 10:15PM Jun 15, 2013Observed: 4.53 ft at 10:30PM Jun 15, 2013Observed: 4.54 ft at 10:45PM Jun 15, 2013Observed: 4.55 ft at 11:00PM Jun 15, 2013Observed: 4.56 ft at 11:15PM Jun 15, 2013Observed: 4.57 ft at 11:30PM Jun 15, 2013Observed: 4.57 ft at 11:45PM Jun 15, 2013Observed: 4.58 ft at 12:00AM Jun 16, 2013Observed: 4.59 ft at 12:15AM Jun 16, 2013Observed: 4.59 ft at 12:30AM Jun 16, 2013Observed: 4.6 ft at 12:45AM Jun 16, 2013Observed: 4.6 ft at 1:00AM Jun 16, 2013Observed: 4.6 ft at 1:15AM Jun 16, 2013Observed: 4.6 ft at 1:30AM Jun 16, 2013Observed: 4.61 ft at 1:45AM Jun 16, 2013Observed: 4.61 ft at 2:00AM Jun 16, 2013Observed: 4.61 ft at 2:15AM Jun 16, 2013Observed: 4.61 ft at 2:30AM Jun 16, 2013Observed: 4.61 ft at 2:45AM Jun 16, 2013Observed: 4.61 ft at 3:00AM Jun 16, 2013Observed: 4.6 ft at 3:15AM Jun 16, 2013Observed: 4.6 ft at 3:30AM Jun 16, 2013Observed: 4.6 ft at 3:45AM Jun 16, 2013Observed: 4.6 ft at 4:00AM Jun 16, 2013Observed: 4.59 ft at 4:15AM Jun 16, 2013Observed: 4.59 ft at 4:30AM Jun 16, 2013Observed: 4.59 ft at 4:45AM Jun 16, 2013Observed: 4.58 ft at 5:00AM Jun 16, 2013Observed: 4.58 ft at 5:15AM Jun 16, 2013Observed: 4.57 ft at 5:30AM Jun 16, 2013Observed: 4.57 ft at 5:45AM Jun 16, 2013Observed: 4.56 ft at 6:00AM Jun 16, 2013Observed: 4.56 ft at 6:15AM Jun 16, 2013Observed: 4.55 ft at 6:30AM Jun 16, 2013Observed: 4.54 ft at 6:45AM Jun 16, 2013Observed: 4.54 ft at 7:00AM Jun 16, 2013Observed: 4.53 ft at 7:15AM Jun 16, 2013Observed: 4.53 ft at 7:30AM Jun 16, 2013Observed: 4.52 ft at 7:45AM Jun 16, 2013Observed: 4.51 ft at 8:00AM Jun 16, 2013Observed: 4.51 ft at 8:15AM Jun 16, 2013Observed: 4.5 ft at 8:30AM Jun 16, 2013Observed: 4.5 ft at 8:45AM Jun 16, 2013Observed: 4.49 ft at 9:00AM Jun 16, 2013Observed: 4.49 ft at 9:15AM Jun 16, 2013Observed: 4.48 ft at 9:30AM Jun 16, 2013Observed: 4.47 ft at 9:45AM Jun 16, 2013Observed: 4.46 ft at 10:00AM Jun 16, 2013Observed: 4.46 ft at 10:15AM Jun 16, 2013Observed: 4.45 ft at 10:30AM Jun 16, 2013Observed: 4.44 ft at 10:45AM Jun 16, 2013Observed: 4.44 ft at 11:00AM Jun 16, 2013Observed: 4.43 ft at 11:15AM Jun 16, 2013Observed: 4.42 ft at 11:30AM Jun 16, 2013Observed: 4.42 ft at 11:45AM Jun 16, 2013Observed: 4.41 ft at 12:00PM Jun 16, 2013Observed: 4.41 ft at 12:15PM Jun 16, 2013Observed: 4.4 ft at 12:30PM Jun 16, 2013Observed: 4.39 ft at 12:45PM Jun 16, 2013Observed: 4.38 ft at 1:00PM Jun 16, 2013Observed: 4.38 ft at 1:15PM Jun 16, 2013Observed: 4.37 ft at 1:30PM Jun 16, 2013Observed: 4.37 ft at 1:45PM Jun 16, 2013Observed: 4.36 ft at 2:00PM Jun 16, 2013Observed: 4.35 ft at 2:15PM Jun 16, 2013Observed: 4.35 ft at 2:30PM Jun 16, 2013Observed: 4.34 ft at 2:45PM Jun 16, 2013Observed: 4.33 ft at 3:00PM Jun 16, 2013Observed: 4.32 ft at 3:15PM Jun 16, 2013Observed: 4.32 ft at 3:30PM Jun 16, 2013Observed: 4.31 ft at 3:45PM Jun 16, 2013Observed: 4.3 ft at 4:00PM Jun 16, 2013Observed: 4.29 ft at 4:15PM Jun 16, 2013Observed: 4.29 ft at 4:30PM Jun 16, 2013Observed: 4.28 ft at 4:45PM Jun 16, 2013Observed: 4.28 ft at 5:00PM Jun 16, 2013Observed: 4.27 ft at 5:15PM Jun 16, 2013Observed: 4.26 ft at 5:30PM Jun 16, 2013Observed: 4.26 ft at 5:45PM Jun 16, 2013Observed: 4.25 ft at 6:00PM Jun 16, 2013Observed: 4.25 ft at 6:15PM Jun 16, 2013Observed: 4.24 ft at 6:30PM Jun 16, 2013Observed: 4.24 ft at 6:45PM Jun 16, 2013Observed: 4.23 ft at 7:00PM Jun 16, 2013Observed: 4.23 ft at 7:15PM Jun 16, 2013Observed: 4.22 ft at 7:30PM Jun 16, 2013Observed: 4.21 ft at 7:45PM Jun 16, 2013Observed: 4.21 ft at 8:00PM Jun 16, 2013Observed: 4.2 ft at 8:15PM Jun 16, 2013Observed: 4.2 ft at 8:30PM Jun 16, 2013Observed: 4.19 ft at 8:45PM Jun 16, 2013Observed: 4.19 ft at 9:00PM Jun 16, 2013Observed: 4.18 ft at 9:15PM Jun 16, 2013Observed: 4.18 ft at 9:30PM Jun 16, 2013Observed: 4.17 ft at 9:45PM Jun 16, 2013Observed: 4.17 ft at 10:00PM Jun 16, 2013Observed: 4.16 ft at 10:15PM Jun 16, 2013Observed: 4.16 ft at 10:30PM Jun 16, 2013Observed: 4.16 ft at 10:45PM Jun 16, 2013Observed: 4.15 ft at 11:00PM Jun 16, 2013Observed: 4.15 ft at 11:15PM Jun 16, 2013Observed: 4.14 ft at 11:30PM Jun 16, 2013Observed: 4.14 ft at 11:45PM Jun 16, 2013Observed: 4.14 ft at 12:00AM Jun 17, 2013Observed: 4.13 ft at 12:15AM Jun 17, 2013Observed: 4.12 ft at 12:30AM Jun 17, 2013Observed: 4.12 ft at 12:45AM Jun 17, 2013Observed: 4.11 ft at 1:00AM Jun 17, 2013Observed: 4.1 ft at 1:15AM Jun 17, 2013Observed: 4.09 ft at 1:30AM Jun 17, 2013Observed: 4.09 ft at 1:45AM Jun 17, 2013Observed: 4.08 ft at 2:00AM Jun 17, 2013Observed: 4.08 ft at 2:15AM Jun 17, 2013Observed: 4.07 ft at 2:30AM Jun 17, 2013Observed: 4.07 ft at 2:45AM Jun 17, 2013Observed: 4.06 ft at 3:00AM Jun 17, 2013Observed: 4.05 ft at 3:15AM Jun 17, 2013Observed: 4.05 ft at 3:30AM Jun 17, 2013Observed: 4.04 ft at 3:45AM Jun 17, 2013Observed: 4.04 ft at 4:00AM Jun 17, 2013Observed: 4.03 ft at 4:15AM Jun 17, 2013Observed: 4.03 ft at 4:30AM Jun 17, 2013Observed: 4.02 ft at 4:45AM Jun 17, 2013Observed: 4.01 ft at 5:00AM Jun 17, 2013Observed: 4.01 ft at 5:15AM Jun 17, 2013Observed: 4 ft at 5:30AM Jun 17, 2013Observed: 4 ft at 5:45AM Jun 17, 2013Observed: 3.99 ft at 6:00AM Jun 17, 2013Observed: 3.99 ft at 6:15AM Jun 17, 2013Observed: 3.98 ft at 6:30AM Jun 17, 2013Observed: 3.97 ft at 6:45AM Jun 17, 2013Observed: 3.97 ft at 7:00AM Jun 17, 2013Observed: 3.96 ft at 7:15AM Jun 17, 2013Observed: 3.95 ft at 7:30AM Jun 17, 2013Observed: 3.95 ft at 7:45AM Jun 17, 2013Observed: 3.94 ft at 8:00AM Jun 17, 2013Observed: 3.93 ft at 8:15AM Jun 17, 2013Observed: 3.93 ft at 8:30AM Jun 17, 2013Observed: 3.92 ft at 8:45AM Jun 17, 2013Observed: 3.92 ft at 9:00AM Jun 17, 2013Observed: 3.91 ft at 9:15AM Jun 17, 2013Observed: 3.9 ft at 9:30AM Jun 17, 2013Observed: 3.9 ft at 9:45AM Jun 17, 2013Observed: 3.89 ft at 10:00AM Jun 17, 2013Observed: 3.89 ft at 10:15AM Jun 17, 2013Observed: 3.88 ft at 10:30AM Jun 17, 2013Observed: 3.88 ft at 10:45AM Jun 17, 2013Observed: 3.87 ft at 11:00AM Jun 17, 2013Observed: 3.86 ft at 11:15AM Jun 17, 2013Observed: 3.86 ft at 11:30AM Jun 17, 2013Observed: 3.85 ft at 11:45AM Jun 17, 2013Observed: 3.85 ft at 12:00PM Jun 17, 2013Observed: 3.84 ft at 12:15PM Jun 17, 2013Observed: 3.83 ft at 12:30PM Jun 17, 2013Observed: 3.83 ft at 12:45PM Jun 17, 2013Observed: 3.82 ft at 1:00PM Jun 17, 2013Observed: 3.82 ft at 1:15PM Jun 17, 2013Observed: 3.81 ft at 1:30PM Jun 17, 2013Observed: 3.8 ft at 1:45PM Jun 17, 2013Observed: 3.79 ft at 2:00PM Jun 17, 2013Observed: 3.79 ft at 2:15PM Jun 17, 2013Observed: 3.78 ft at 2:30PM Jun 17, 2013Observed: 3.77 ft at 2:45PM Jun 17, 2013Observed: 3.76 ft at 3:00PM Jun 17, 2013Observed: 3.76 ft at 3:15PM Jun 17, 2013Observed: 3.75 ft at 3:30PM Jun 17, 2013Observed: 3.74 ft at 3:45PM Jun 17, 2013Observed: 3.74 ft at 4:00PM Jun 17, 2013Observed: 3.73 ft at 4:15PM Jun 17, 2013Observed: 3.73 ft at 4:30PM Jun 17, 2013Observed: 3.72 ft at 4:45PM Jun 17, 2013Observed: 3.71 ft at 5:00PM Jun 17, 2013Observed: 3.71 ft at 5:15PM Jun 17, 2013Observed: 3.7 ft at 5:30PM Jun 17, 2013Observed: 3.7 ft at 5:45PM Jun 17, 2013Observed: 3.69 ft at 6:00PM Jun 17, 2013Observed: 3.69 ft at 6:15PM Jun 17, 2013Observed: 3.68 ft at 6:30PM Jun 17, 2013Observed: 3.67 ft at 6:45PM Jun 17, 2013Observed: 3.66 ft at 7:00PM Jun 17, 2013Observed: 3.66 ft at 7:15PM Jun 17, 2013Observed: 3.65 ft at 7:30PM Jun 17, 2013Observed: 3.64 ft at 7:45PM Jun 17, 2013Observed: 3.64 ft at 8:00PM Jun 17, 2013Observed: 3.63 ft at 8:15PM Jun 17, 2013Observed: 3.62 ft at 8:30PM Jun 17, 2013Observed: 3.62 ft at 8:45PM Jun 17, 2013Observed: 3.61 ft at 9:00PM Jun 17, 2013Observed: 3.6 ft at 9:15PM Jun 17, 2013Observed: 3.6 ft at 9:30PM Jun 17, 2013Observed: 3.59 ft at 9:45PM Jun 17, 2013Observed: 3.59 ft at 10:00PM Jun 17, 2013Observed: 3.58 ft at 10:15PM Jun 17, 2013Observed: 3.57 ft at 10:30PM Jun 17, 2013Observed: 3.57 ft at 10:45PM Jun 17, 2013Observed: 3.56 ft at 11:00PM Jun 17, 2013Observed: 3.56 ft at 11:15PM Jun 17, 2013Observed: 3.55 ft at 11:30PM Jun 17, 2013Observed: 3.55 ft at 11:45PM Jun 17, 2013Observed: 3.54 ft at 12:00AM Jun 18, 2013Observed: 3.53 ft at 12:15AM Jun 18, 2013Observed: 3.53 ft at 12:30AM Jun 18, 2013Observed: 3.53 ft at 12:45AM Jun 18, 2013Observed: 3.52 ft at 1:00AM Jun 18, 2013Observed: 3.52 ft at 1:15AM Jun 18, 2013Observed: 3.51 ft at 1:30AM Jun 18, 2013Observed: 3.51 ft at 1:45AM Jun 18, 2013Observed: 3.51 ft at 2:00AM Jun 18, 2013Observed: 3.5 ft at 2:15AM Jun 18, 2013Observed: 3.5 ft at 2:30AM Jun 18, 2013Observed: 3.49 ft at 2:45AM Jun 18, 2013Observed: 3.49 ft at 3:00AM Jun 18, 2013Observed: 3.49 ft at 3:15AM Jun 18, 2013Observed: 3.48 ft at 3:30AM Jun 18, 2013Observed: 3.48 ft at 3:45AM Jun 18, 2013Observed: 3.47 ft at 4:00AM Jun 18, 2013Observed: 3.47 ft at 4:15AM Jun 18, 2013Observed: 3.46 ft at 4:30AM Jun 18, 2013Observed: 3.46 ft at 4:45AM Jun 18, 2013Observed: 3.45 ft at 5:00AM Jun 18, 2013Observed: 3.45 ft at 5:15AM Jun 18, 2013Observed: 3.45 ft at 5:30AM Jun 18, 2013Observed: 3.44 ft at 5:45AM Jun 18, 2013Observed: 3.44 ft at 6:00AM Jun 18, 2013Observed: 3.43 ft at 6:15AM Jun 18, 2013Observed: 3.43 ft at 6:30AM Jun 18, 2013Observed: 3.42 ft at 6:45AM Jun 18, 2013Observed: 3.42 ft at 7:00AM Jun 18, 2013Observed: 3.42 ft at 7:15AM Jun 18, 2013Observed: 3.41 ft at 7:30AM Jun 18, 2013Observed: 3.41 ft at 7:45AM Jun 18, 2013Observed: 3.41 ft at 8:00AM Jun 18, 2013Observed: 3.41 ft at 8:15AM Jun 18, 2013Observed: 3.41 ft at 8:30AM Jun 18, 2013Observed: 3.4 ft at 8:45AM Jun 18, 2013Observed: 3.4 ft at 9:00AM Jun 18, 2013Observed: 3.4 ft at 9:15AM Jun 18, 2013Observed: 3.4 ft at 9:30AM Jun 18, 2013Observed: 3.41 ft at 9:45AM Jun 18, 2013Observed: 3.41 ft at 10:00AM Jun 18, 2013Observed: 3.42 ft at 10:15AM Jun 18, 2013Observed: 3.42 ft at 10:30AM Jun 18, 2013Observed: 3.42 ft at 10:45AM Jun 18, 2013Observed: 3.42 ft at 11:00AM Jun 18, 2013Observed: 3.42 ft at 11:15AM Jun 18, 2013Observed: 3.41 ft at 11:30AM Jun 18, 2013Observed: 3.41 ft at 11:45AM Jun 18, 2013Observed: 3.41 ft at 12:00PM Jun 18, 2013Observed: 3.4 ft at 12:15PM Jun 18, 2013Observed: 3.4 ft at 12:30PM Jun 18, 2013Observed: 3.39 ft at 12:45PM Jun 18, 2013Observed: 3.39 ft at 1:00PM Jun 18, 2013Observed: 3.38 ft at 1:15PM Jun 18, 2013Observed: 3.38 ft at 1:30PM Jun 18, 2013Observed: 3.38 ft at 1:45PM Jun 18, 2013Observed: 3.38 ft at 2:00PM Jun 18, 2013Observed: 3.37 ft at 2:15PM Jun 18, 2013Observed: 3.37 ft at 2:30PM Jun 18, 2013Observed: 3.36 ft at 2:45PM Jun 18, 2013Observed: 3.36 ft at 3:00PM Jun 18, 2013Observed: 3.36 ft at 3:15PM Jun 18, 2013Observed: 3.35 ft at 3:30PM Jun 18, 2013Observed: 3.35 ft at 3:45PM Jun 18, 2013Observed: 3.35 ft at 4:00PM Jun 18, 2013Observed: 3.34 ft at 4:15PM Jun 18, 2013Observed: 3.34 ft at 4:30PM Jun 18, 2013Observed: 3.34 ft at 4:45PM Jun 18, 2013Observed: 3.34 ft at 5:00PM Jun 18, 2013Observed: 3.33 ft at 5:15PM Jun 18, 2013Observed: 3.33 ft at 5:30PM Jun 18, 2013Observed: 3.33 ft at 5:45PM Jun 18, 2013Observed: 3.32 ft at 6:00PM Jun 18, 2013Observed: 3.32 ft at 6:15PM Jun 18, 2013Observed: 3.32 ft at 6:30PM Jun 18, 2013Observed: 3.32 ft at 6:45PM Jun 18, 2013Observed: 3.31 ft at 7:00PM Jun 18, 2013Observed: 3.31 ft at 7:15PM Jun 18, 2013Observed: 3.3 ft at 7:30PM Jun 18, 2013Observed: 3.3 ft at 7:45PM Jun 18, 2013Observed: 3.3 ft at 8:00PM Jun 18, 2013Observed: 3.29 ft at 8:15PM Jun 18, 2013Observed: 3.29 ft at 8:30PM Jun 18, 2013Observed: 3.28 ft at 8:45PM Jun 18, 2013Observed: 3.28 ft at 9:00PM Jun 18, 2013Observed: 3.28 ft at 9:15PM Jun 18, 2013Observed: 3.27 ft at 9:30PM Jun 18, 2013Observed: 3.27 ft at 9:45PM Jun 18, 2013Observed: 3.27 ft at 10:00PM Jun 18, 2013Observed: 3.27 ft at 10:15PM Jun 18, 2013Observed: 3.27 ft at 10:30PM Jun 18, 2013Observed: 3.28 ft at 10:45PM Jun 18, 2013Observed: 3.28 ft at 11:00PM Jun 18, 2013Observed: 3.28 ft at 11:15PM Jun 18, 2013Observed: 3.28 ft at 11:30PM Jun 18, 2013Observed: 3.28 ft at 11:45PM Jun 18, 2013Observed: 3.29 ft at 12:00AM Jun 19, 2013Observed: 3.29 ft at 12:15AM Jun 19, 2013Observed: 3.29 ft at 12:30AM Jun 19, 2013Observed: 3.29 ft at 12:45AM Jun 19, 2013Observed: 3.31 ft at 1:00AM Jun 19, 2013Observed: 3.32 ft at 1:15AM Jun 19, 2013Observed: 3.34 ft at 1:30AM Jun 19, 2013Observed: 3.35 ft at 1:45AM Jun 19, 2013Observed: 3.36 ft at 2:00AM Jun 19, 2013Observed: 3.37 ft at 2:15AM Jun 19, 2013Observed: 3.38 ft at 2:30AM Jun 19, 2013Observed: 3.38 ft at 2:45AM Jun 19, 2013Observed: 3.38 ft at 3:00AM Jun 19, 2013Observed: 3.38 ft at 3:15AM Jun 19, 2013Observed: 3.38 ft at 3:30AM Jun 19, 2013Observed: 3.38 ft at 3:45AM Jun 19, 2013Observed: 3.38 ft at 4:00AM Jun 19, 2013Observed: 3.38 ft at 4:15AM Jun 19, 2013Observed: 3.37 ft at 4:30AM Jun 19, 2013Observed: 3.37 ft at 4:45AM Jun 19, 2013Observed: 3.37 ft at 5:00AM Jun 19, 2013Observed: 3.36 ft at 5:15AM Jun 19, 2013Observed: 3.36 ft at 5:30AM Jun 19, 2013Observed: 3.35 ft at 5:45AM Jun 19, 2013Observed: 3.35 ft at 6:00AM Jun 19, 2013Observed: 3.34 ft at 6:15AM Jun 19, 2013Observed: 3.34 ft at 6:30AM Jun 19, 2013Observed: 3.33 ft at 6:45AM Jun 19, 2013Observed: 3.33 ft at 7:00AM Jun 19, 2013Observed: 3.32 ft at 7:15AM Jun 19, 2013Observed: 3.32 ft at 7:30AM Jun 19, 2013Observed: 3.31 ft at 7:45AM Jun 19, 2013Observed: 3.3 ft at 8:00AM Jun 19, 2013Observed: 3.3 ft at 8:15AM Jun 19, 2013Observed: 3.29 ft at 8:30AM Jun 19, 2013Observed: 3.28 ft at 8:45AM Jun 19, 2013Observed: 3.28 ft at 9:00AM Jun 19, 2013Observed: 3.27 ft at 9:15AM Jun 19, 2013Observed: 3.27 ft at 9:30AM Jun 19, 2013Observed: 3.26 ft at 9:45AM Jun 19, 2013Observed: 3.26 ft at 10:00AM Jun 19, 2013Observed: 3.26 ft at 10:15AM Jun 19, 2013Observed: 3.25 ft at 10:30AM Jun 19, 2013Observed: 3.25 ft at 10:45AM Jun 19, 2013Observed: 3.25 ft at 11:00AM Jun 19, 2013Observed: 3.25 ft at 11:15AM Jun 19, 2013Observed: 3.25 ft at 11:30AM Jun 19, 2013Observed: 3.24 ft at 11:45AM Jun 19, 2013Observed: 3.24 ft at 12:00PM Jun 19, 2013Observed: 3.24 ft at 12:15PM Jun 19, 2013Observed: 3.24 ft at 12:30PM Jun 19, 2013Observed: 3.24 ft at 12:45PM Jun 19, 2013Observed: 3.24 ft at 1:00PM Jun 19, 2013Observed: 3.24 ft at 1:15PM Jun 19, 2013Observed: 3.24 ft at 1:30PM Jun 19, 2013Observed: 3.24 ft at 1:45PM Jun 19, 2013Observed: 3.24 ft at 2:00PM Jun 19, 2013Observed: 3.24 ft at 2:15PM Jun 19, 2013Observed: 3.24 ft at 2:30PM Jun 19, 2013Observed: 3.24 ft at 2:45PM Jun 19, 2013Observed: 3.24 ft at 3:00PM Jun 19, 2013Observed: 3.24 ft at 3:15PM Jun 19, 2013Observed: 3.23 ft at 3:30PM Jun 19, 2013Observed: 3.23 ft at 3:45PM Jun 19, 2013Forecast: 3.3 ft 8:00PM Jun 19, 2013Forecast: 3.5 ft 2:00AM Jun 20, 2013Highest Forecast: 3.7 ft 8:00AM Jun 20, 2013Highest Forecast: 3.7 ft 2:00PM Jun 20, 2013Forecast: 3.4 ft 8:00PM Jun 20, 2013Forecast: 3.3 ft 2:00AM Jun 21, 2013Forecast: 3.2 ft 8:00AM Jun 21, 2013Forecast: 3.2 ft 2:00PM Jun 21, 2013Forecast: 3.1 ft 8:00PM Jun 21, 2013Forecast: 3 ft 2:00AM Jun 22, 2013Forecast: 2.9 ft 8:00AM Jun 22, 2013USGS--Water Resources of the United StatesPORM2(plotting HGIRG) Graph Created (4:36PM Jun 19, 2013)ObservedForecast (issued 9:09AM Jun 19)Latest observed value: 3.23 ft at 3:45 PM EDT 19-Jun-2013. Flood Stage is 16 ft
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NOTE: Forecasts for the Potomac River at Point of Rocks are issued routinely year-round.
Return to Area Map
Upstream Gauge - at Harpers Ferry Upstream Gauge Downstream Gauge Downstream Gauge - at Edwards Ferry
Flood Categories (in feet)
Major Flood Stage:25
Moderate Flood Stage:20
Flood Stage:16
Action Stage:15

Historical Crests
(1) 41.03 ft on 03/19/1936
(2) 40.43 ft on 10/16/1942
(3) 40.20 ft on 06/02/1889
(4) 37.43 ft on 06/23/1972
(5) 36.34 ft on 01/21/1996
Show More Historical Crests

Low Water Records
(1) 0.30 ft on 09/11/1966
Legend
Gauge Location
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
35 THE MARC STATION IN POINT OF ROCKS IS FLOODED. AT LEAST TWO FEET OF WATER COVERS MUCH OF MARYLAND STATE ROUTE 28 IN THE CITY. WATER BEGINS TO ENTER HOMES AND BUSINESSES IN POINT OF ROCKS ALONG ROUTE 28.
32 WATER COVERS MARYLAND STATE ROUTE 28 IN POINT OF ROCKS NEAR THE MARC STATION.
30 WATER REACHES A HOME ON THE LOUDOUN COUNTY SIDE OF THE RIVER NEAR POINT OF ROCKS. WATER ALSO COVERS PORTIONS OF THE MARC PARKING LOT AT POINT OF ROCKS...AND COVERS OLD COMMERCE STREET.
27 WATER COVERS A LARGE SECTION OF THE C AND O CANAL TOWPATH IN FREDERICK COUNTY MARYLAND. WATER ALSO REACHES THE RAILROAD TRACKS AT POINT OF ROCKS.
25 WATER REACHES OUTBUILDINGS ON THE LOUDOUN COUNTY SIDE OF THE RIVER NEAR POINT OF ROCKS.
23 THE UPPER PARKING LOT AT THE POINT OF ROCKS BOAT RAMP BEGINS TO FLOOD.
22 WATER BEGINS TO COVER THE C AND O CANAL TOWPATH NEAR POINT OF ROCKS AND BRUNSWICK.
20 THE BOAT RAMP AND LOWER PARKING LOT AT POINT OF ROCKS ARE FLOODED. FARMLAND BEHIND THE TARARA VINEYARD IS FLOODED.
16 THE PARKING LOTS AT BOTH THE MCKIMMEY AND BRUNSWICK BOAT RAMPS BEGIN TO FLOOD. FLOODING OF AN AGRICULTURAL FIELD ADJACENT TO THE MCKIMMEY BOAT RAMP IS OCCURRING. ABOUT HALF THE PARKING LOT OF THE POINT OF ROCKS BOAT RAMP IS ALSO FLOODED.
15 SEVERAL LOWLAND FORESTED AREAS...MAINLY ON ISLANDS...BEGIN TO FLOOD.
5.5 THE RIVER REACHES DANGER LEVEL FOR BOATERS...AS DEFINED BY THE STATE OF MARYLAND. CONDITIONS ARE EXTREMELY HAZARDOUS.
2 THE RIVER REACHES CAUTION LEVEL FOR BOATERS...AS DEFINED BY THE STATE OF MARYLAND. FAST MOVING WATER AND CHANGING CURRENTS CAN BE EXPECTED.
Photos
(1) USGS Wellhouse Adjacent to US Route 15 at Point of Rocks
(2) Staff Gage Being Installed in 1993 on US Route 15 Bridge Support Beam
(3) Looking Upstream at Paton Island from US 15 Bridge
(4) Railroad Tunnel Just Above Gage on Maryland Side of Potomac
About This Location Collapse

Latitude: 39.273611° N, Longitude: 77.543056° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 16 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 29 200.63 ft 216.63 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Other Data Sources:
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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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