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Hydrograph River at a Glance Download
Potomac River at Point of Rocks Stage (ft)Flow (kcfs)Highest Observation: 4.25 ft at 2:30AM Apr 19, 2014Observed: 4.24 ft at 2:45AM Apr 19, 2014Observed: 4.24 ft at 3:00AM Apr 19, 2014Observed: 4.23 ft at 3:15AM Apr 19, 2014Observed: 4.23 ft at 3:30AM Apr 19, 2014Observed: 4.22 ft at 3:45AM Apr 19, 2014Observed: 4.22 ft at 4:00AM Apr 19, 2014Observed: 4.21 ft at 4:15AM Apr 19, 2014Observed: 4.21 ft at 4:30AM Apr 19, 2014Observed: 4.21 ft at 4:45AM Apr 19, 2014Observed: 4.2 ft at 5:00AM Apr 19, 2014Observed: 4.2 ft at 5:15AM Apr 19, 2014Observed: 4.19 ft at 5:30AM Apr 19, 2014Observed: 4.19 ft at 5:45AM Apr 19, 2014Observed: 4.19 ft at 6:00AM Apr 19, 2014Observed: 4.18 ft at 6:15AM Apr 19, 2014Observed: 4.18 ft at 6:30AM Apr 19, 2014Observed: 4.18 ft at 6:45AM Apr 19, 2014Observed: 4.17 ft at 7:00AM Apr 19, 2014Observed: 4.17 ft at 7:15AM Apr 19, 2014Observed: 4.17 ft at 7:30AM Apr 19, 2014Observed: 4.17 ft at 7:45AM Apr 19, 2014Observed: 4.16 ft at 8:00AM Apr 19, 2014Observed: 4.16 ft at 8:15AM Apr 19, 2014Observed: 4.16 ft at 8:30AM Apr 19, 2014Observed: 4.16 ft at 8:45AM Apr 19, 2014Observed: 4.15 ft at 9:00AM Apr 19, 2014Observed: 4.15 ft at 9:15AM Apr 19, 2014Observed: 4.15 ft at 9:30AM Apr 19, 2014Observed: 4.14 ft at 9:45AM Apr 19, 2014Observed: 4.14 ft at 10:00AM Apr 19, 2014Observed: 4.14 ft at 10:15AM Apr 19, 2014Observed: 4.14 ft at 10:30AM Apr 19, 2014Observed: 4.13 ft at 10:45AM Apr 19, 2014Observed: 4.13 ft at 11:00AM Apr 19, 2014Observed: 4.13 ft at 11:15AM Apr 19, 2014Observed: 4.12 ft at 11:30AM Apr 19, 2014Observed: 4.12 ft at 11:45AM Apr 19, 2014Observed: 4.11 ft at 12:00PM Apr 19, 2014Observed: 4.11 ft at 12:15PM Apr 19, 2014Observed: 4.1 ft at 12:30PM Apr 19, 2014Observed: 4.1 ft at 12:45PM Apr 19, 2014Observed: 4.1 ft at 1:00PM Apr 19, 2014Observed: 4.09 ft at 1:15PM Apr 19, 2014Observed: 4.09 ft at 1:30PM Apr 19, 2014Observed: 4.09 ft at 1:45PM Apr 19, 2014Observed: 4.08 ft at 2:00PM Apr 19, 2014Observed: 4.07 ft at 2:15PM Apr 19, 2014Observed: 4.07 ft at 2:30PM Apr 19, 2014Observed: 4.06 ft at 2:45PM Apr 19, 2014Observed: 4.06 ft at 3:00PM Apr 19, 2014Observed: 4.05 ft at 3:15PM Apr 19, 2014Observed: 4.05 ft at 3:30PM Apr 19, 2014Observed: 4.05 ft at 3:45PM Apr 19, 2014Observed: 4.05 ft at 4:00PM Apr 19, 2014Observed: 4.05 ft at 4:15PM Apr 19, 2014Observed: 4.06 ft at 4:30PM Apr 19, 2014Observed: 4.06 ft at 4:45PM Apr 19, 2014Observed: 4.06 ft at 5:00PM Apr 19, 2014Observed: 4.06 ft at 5:15PM Apr 19, 2014Observed: 4.06 ft at 5:30PM Apr 19, 2014Observed: 4.06 ft at 5:45PM Apr 19, 2014Observed: 4.06 ft at 6:00PM Apr 19, 2014Observed: 4.06 ft at 6:15PM Apr 19, 2014Observed: 4.06 ft at 6:30PM Apr 19, 2014Observed: 4.05 ft at 6:45PM Apr 19, 2014Observed: 4.05 ft at 7:00PM Apr 19, 2014Observed: 4.05 ft at 7:15PM Apr 19, 2014Observed: 4.04 ft at 7:30PM Apr 19, 2014Observed: 4.04 ft at 7:45PM Apr 19, 2014Observed: 4.04 ft at 8:00PM Apr 19, 2014Observed: 4.04 ft at 8:15PM Apr 19, 2014Observed: 4.03 ft at 8:30PM Apr 19, 2014Observed: 4.03 ft at 8:45PM Apr 19, 2014Observed: 4.02 ft at 9:00PM Apr 19, 2014Observed: 4.02 ft at 9:15PM Apr 19, 2014Observed: 4.02 ft at 9:30PM Apr 19, 2014Observed: 4.02 ft at 9:45PM Apr 19, 2014Observed: 4.02 ft at 10:00PM Apr 19, 2014Observed: 4.01 ft at 10:15PM Apr 19, 2014Observed: 4.01 ft at 10:30PM Apr 19, 2014Observed: 4.01 ft at 10:45PM Apr 19, 2014Observed: 4.01 ft at 11:00PM Apr 19, 2014Observed: 4 ft at 11:15PM Apr 19, 2014Observed: 4 ft at 11:30PM Apr 19, 2014Observed: 4 ft at 11:45PM Apr 19, 2014Observed: 4 ft at 12:00AM Apr 20, 2014Observed: 3.99 ft at 12:15AM Apr 20, 2014Observed: 3.99 ft at 12:30AM Apr 20, 2014Observed: 3.99 ft at 12:45AM Apr 20, 2014Observed: 3.99 ft at 1:00AM Apr 20, 2014Observed: 3.98 ft at 1:15AM Apr 20, 2014Observed: 3.98 ft at 1:30AM Apr 20, 2014Observed: 3.98 ft at 1:45AM Apr 20, 2014Observed: 3.97 ft at 2:00AM Apr 20, 2014Observed: 3.97 ft at 2:15AM Apr 20, 2014Observed: 3.97 ft at 2:30AM Apr 20, 2014Observed: 3.96 ft at 2:45AM Apr 20, 2014Observed: 3.96 ft at 3:00AM Apr 20, 2014Observed: 3.96 ft at 3:15AM Apr 20, 2014Observed: 3.96 ft at 3:30AM Apr 20, 2014Observed: 3.96 ft at 3:45AM Apr 20, 2014Observed: 3.95 ft at 4:00AM Apr 20, 2014Observed: 3.95 ft at 4:15AM Apr 20, 2014Observed: 3.95 ft at 4:30AM Apr 20, 2014Observed: 3.95 ft at 4:45AM Apr 20, 2014Observed: 3.94 ft at 5:00AM Apr 20, 2014Observed: 3.94 ft at 5:15AM Apr 20, 2014Observed: 3.94 ft at 5:30AM Apr 20, 2014Observed: 3.94 ft at 5:45AM Apr 20, 2014Observed: 3.93 ft at 6:00AM Apr 20, 2014Observed: 3.93 ft at 6:15AM Apr 20, 2014Observed: 3.93 ft at 6:30AM Apr 20, 2014Observed: 3.93 ft at 6:45AM Apr 20, 2014Observed: 3.93 ft at 7:00AM Apr 20, 2014Observed: 3.92 ft at 7:15AM Apr 20, 2014Observed: 3.92 ft at 7:30AM Apr 20, 2014Observed: 3.92 ft at 7:45AM Apr 20, 2014Observed: 3.92 ft at 8:00AM Apr 20, 2014Observed: 3.92 ft at 8:15AM Apr 20, 2014Observed: 3.91 ft at 8:30AM Apr 20, 2014Observed: 3.91 ft at 8:45AM Apr 20, 2014Observed: 3.91 ft at 9:00AM Apr 20, 2014Observed: 3.91 ft at 9:15AM Apr 20, 2014Observed: 3.9 ft at 9:30AM Apr 20, 2014Observed: 3.9 ft at 9:45AM Apr 20, 2014Observed: 3.9 ft at 10:00AM Apr 20, 2014Observed: 3.89 ft at 10:15AM Apr 20, 2014Observed: 3.89 ft at 10:30AM Apr 20, 2014Observed: 3.89 ft at 10:45AM Apr 20, 2014Observed: 3.89 ft at 11:00AM Apr 20, 2014Observed: 3.88 ft at 11:15AM Apr 20, 2014Observed: 3.88 ft at 11:30AM Apr 20, 2014Observed: 3.88 ft at 11:45AM Apr 20, 2014Observed: 3.88 ft at 12:00PM Apr 20, 2014Observed: 3.87 ft at 12:15PM Apr 20, 2014Observed: 3.87 ft at 12:30PM Apr 20, 2014Observed: 3.87 ft at 12:45PM Apr 20, 2014Observed: 3.87 ft at 1:00PM Apr 20, 2014Observed: 3.87 ft at 1:15PM Apr 20, 2014Observed: 3.86 ft at 1:30PM Apr 20, 2014Observed: 3.86 ft at 1:45PM Apr 20, 2014Observed: 3.86 ft at 2:00PM Apr 20, 2014Observed: 3.86 ft at 2:15PM Apr 20, 2014Observed: 3.86 ft at 2:30PM Apr 20, 2014Observed: 3.86 ft at 2:45PM Apr 20, 2014Observed: 3.85 ft at 3:00PM Apr 20, 2014Observed: 3.86 ft at 3:15PM Apr 20, 2014Observed: 3.85 ft at 3:30PM Apr 20, 2014Observed: 3.85 ft at 3:45PM Apr 20, 2014Observed: 3.85 ft at 4:00PM Apr 20, 2014Observed: 3.85 ft at 4:15PM Apr 20, 2014Observed: 3.85 ft at 4:30PM Apr 20, 2014Observed: 3.84 ft at 4:45PM Apr 20, 2014Observed: 3.84 ft at 5:00PM Apr 20, 2014Observed: 3.84 ft at 5:15PM Apr 20, 2014Observed: 3.84 ft at 5:30PM Apr 20, 2014Observed: 3.84 ft at 5:45PM Apr 20, 2014Observed: 3.84 ft at 6:00PM Apr 20, 2014Observed: 3.83 ft at 6:15PM Apr 20, 2014Observed: 3.83 ft at 6:30PM Apr 20, 2014Observed: 3.83 ft at 6:45PM Apr 20, 2014Observed: 3.83 ft at 7:00PM Apr 20, 2014Observed: 3.83 ft at 7:15PM Apr 20, 2014Observed: 3.82 ft at 7:30PM Apr 20, 2014Observed: 3.82 ft at 7:45PM Apr 20, 2014Observed: 3.82 ft at 8:00PM Apr 20, 2014Observed: 3.82 ft at 8:15PM Apr 20, 2014Observed: 3.81 ft at 8:30PM Apr 20, 2014Observed: 3.81 ft at 8:45PM Apr 20, 2014Observed: 3.81 ft at 9:00PM Apr 20, 2014Observed: 3.81 ft at 9:15PM Apr 20, 2014Observed: 3.81 ft at 9:30PM Apr 20, 2014Observed: 3.81 ft at 9:45PM Apr 20, 2014Observed: 3.8 ft at 10:00PM Apr 20, 2014Observed: 3.8 ft at 10:15PM Apr 20, 2014Observed: 3.8 ft at 10:30PM Apr 20, 2014Observed: 3.8 ft at 10:45PM Apr 20, 2014Observed: 3.8 ft at 11:00PM Apr 20, 2014Observed: 3.8 ft at 11:15PM Apr 20, 2014Observed: 3.79 ft at 11:30PM Apr 20, 2014Observed: 3.79 ft at 11:45PM Apr 20, 2014Observed: 3.79 ft at 12:00AM Apr 21, 2014Observed: 3.79 ft at 12:15AM Apr 21, 2014Observed: 3.78 ft at 12:30AM Apr 21, 2014Observed: 3.78 ft at 12:45AM Apr 21, 2014Observed: 3.78 ft at 1:00AM Apr 21, 2014Observed: 3.78 ft at 1:15AM Apr 21, 2014Observed: 3.77 ft at 1:30AM Apr 21, 2014Observed: 3.77 ft at 1:45AM Apr 21, 2014Observed: 3.77 ft at 2:00AM Apr 21, 2014Observed: 3.77 ft at 2:15AM Apr 21, 2014Observed: 3.76 ft at 2:30AM Apr 21, 2014Observed: 3.76 ft at 2:45AM Apr 21, 2014Observed: 3.76 ft at 3:00AM Apr 21, 2014Observed: 3.76 ft at 3:15AM Apr 21, 2014Observed: 3.75 ft at 3:30AM Apr 21, 2014Observed: 3.75 ft at 3:45AM Apr 21, 2014Observed: 3.75 ft at 4:00AM Apr 21, 2014Observed: 3.75 ft at 4:15AM Apr 21, 2014Observed: 3.75 ft at 4:30AM Apr 21, 2014Observed: 3.75 ft at 4:45AM Apr 21, 2014Observed: 3.74 ft at 5:00AM Apr 21, 2014Observed: 3.74 ft at 5:15AM Apr 21, 2014Observed: 3.74 ft at 5:30AM Apr 21, 2014Observed: 3.74 ft at 5:45AM Apr 21, 2014Observed: 3.74 ft at 6:00AM Apr 21, 2014Observed: 3.74 ft at 6:15AM Apr 21, 2014Observed: 3.73 ft at 6:30AM Apr 21, 2014Observed: 3.73 ft at 6:45AM Apr 21, 2014Observed: 3.73 ft at 7:00AM Apr 21, 2014Observed: 3.72 ft at 7:15AM Apr 21, 2014Observed: 3.72 ft at 7:30AM Apr 21, 2014Observed: 3.72 ft at 7:45AM Apr 21, 2014Observed: 3.72 ft at 8:00AM Apr 21, 2014Observed: 3.72 ft at 8:15AM Apr 21, 2014Observed: 3.71 ft at 8:30AM Apr 21, 2014Observed: 3.71 ft at 8:45AM Apr 21, 2014Observed: 3.71 ft at 9:00AM Apr 21, 2014Observed: 3.71 ft at 9:15AM Apr 21, 2014Observed: 3.71 ft at 9:30AM Apr 21, 2014Observed: 3.71 ft at 9:45AM Apr 21, 2014Observed: 3.7 ft at 10:00AM Apr 21, 2014Observed: 3.7 ft at 10:15AM Apr 21, 2014Observed: 3.7 ft at 10:30AM Apr 21, 2014Observed: 3.7 ft at 10:45AM Apr 21, 2014Observed: 3.7 ft at 11:00AM Apr 21, 2014Observed: 3.7 ft at 11:15AM Apr 21, 2014Observed: 3.69 ft at 11:30AM Apr 21, 2014Observed: 3.69 ft at 11:45AM Apr 21, 2014Observed: 3.69 ft at 12:00PM Apr 21, 2014Observed: 3.68 ft at 12:15PM Apr 21, 2014Observed: 3.68 ft at 12:30PM Apr 21, 2014Observed: 3.68 ft at 12:45PM Apr 21, 2014Observed: 3.68 ft at 1:00PM Apr 21, 2014Observed: 3.68 ft at 1:15PM Apr 21, 2014Observed: 3.67 ft at 1:30PM Apr 21, 2014Observed: 3.67 ft at 1:45PM Apr 21, 2014Observed: 3.67 ft at 2:00PM Apr 21, 2014Observed: 3.67 ft at 2:15PM Apr 21, 2014Observed: 3.67 ft at 2:30PM Apr 21, 2014Observed: 3.67 ft at 2:45PM Apr 21, 2014Observed: 3.67 ft at 3:00PM Apr 21, 2014Observed: 3.67 ft at 3:15PM Apr 21, 2014Observed: 3.67 ft at 3:30PM Apr 21, 2014Observed: 3.67 ft at 3:45PM Apr 21, 2014Observed: 3.67 ft at 4:00PM Apr 21, 2014Observed: 3.67 ft at 4:15PM Apr 21, 2014Observed: 3.67 ft at 4:30PM Apr 21, 2014Observed: 3.67 ft at 4:45PM Apr 21, 2014Observed: 3.67 ft at 5:00PM Apr 21, 2014Observed: 3.67 ft at 5:15PM Apr 21, 2014Observed: 3.67 ft at 5:30PM Apr 21, 2014Observed: 3.67 ft at 5:45PM Apr 21, 2014Observed: 3.67 ft at 6:00PM Apr 21, 2014Observed: 3.67 ft at 6:15PM Apr 21, 2014Observed: 3.67 ft at 6:30PM Apr 21, 2014Observed: 3.68 ft at 6:45PM Apr 21, 2014Observed: 3.68 ft at 7:00PM Apr 21, 2014Observed: 3.68 ft at 7:15PM Apr 21, 2014Observed: 3.68 ft at 7:30PM Apr 21, 2014Observed: 3.68 ft at 7:45PM Apr 21, 2014Observed: 3.68 ft at 8:00PM Apr 21, 2014Observed: 3.68 ft at 8:15PM Apr 21, 2014Observed: 3.68 ft at 8:30PM Apr 21, 2014Observed: 3.68 ft at 8:45PM Apr 21, 2014Observed: 3.68 ft at 9:00PM Apr 21, 2014Observed: 3.68 ft at 9:15PM Apr 21, 2014Observed: 3.68 ft at 9:30PM Apr 21, 2014Observed: 3.68 ft at 9:45PM Apr 21, 2014Observed: 3.68 ft at 10:00PM Apr 21, 2014Observed: 3.68 ft at 10:15PM Apr 21, 2014Observed: 3.67 ft at 10:30PM Apr 21, 2014Observed: 3.67 ft at 10:45PM Apr 21, 2014Observed: 3.67 ft at 11:00PM Apr 21, 2014Observed: 3.67 ft at 11:15PM Apr 21, 2014Observed: 3.67 ft at 11:30PM Apr 21, 2014Observed: 3.67 ft at 11:45PM Apr 21, 2014Observed: 3.67 ft at 12:00AM Apr 22, 2014Observed: 3.67 ft at 12:15AM Apr 22, 2014Observed: 3.67 ft at 12:30AM Apr 22, 2014Observed: 3.67 ft at 12:45AM Apr 22, 2014Observed: 3.67 ft at 1:00AM Apr 22, 2014Observed: 3.67 ft at 1:15AM Apr 22, 2014Observed: 3.67 ft at 1:30AM Apr 22, 2014Observed: 3.67 ft at 1:45AM Apr 22, 2014Observed: 3.67 ft at 2:00AM Apr 22, 2014Observed: 3.67 ft at 2:15AM Apr 22, 2014Observed: 3.67 ft at 2:30AM Apr 22, 2014Observed: 3.67 ft at 2:45AM Apr 22, 2014Observed: 3.67 ft at 3:00AM Apr 22, 2014Observed: 3.66 ft at 3:15AM Apr 22, 2014Observed: 3.66 ft at 3:30AM Apr 22, 2014Observed: 3.66 ft at 3:45AM Apr 22, 2014Observed: 3.66 ft at 4:00AM Apr 22, 2014Observed: 3.66 ft at 4:15AM Apr 22, 2014Observed: 3.66 ft at 4:30AM Apr 22, 2014Observed: 3.66 ft at 4:45AM Apr 22, 2014Observed: 3.66 ft at 5:00AM Apr 22, 2014Observed: 3.65 ft at 5:15AM Apr 22, 2014Observed: 3.65 ft at 5:30AM Apr 22, 2014Observed: 3.65 ft at 5:45AM Apr 22, 2014Observed: 3.65 ft at 6:00AM Apr 22, 2014Observed: 3.64 ft at 6:15AM Apr 22, 2014Observed: 3.64 ft at 6:30AM Apr 22, 2014Observed: 3.64 ft at 6:45AM Apr 22, 2014Observed: 3.64 ft at 7:00AM Apr 22, 2014Observed: 3.64 ft at 7:15AM Apr 22, 2014Observed: 3.63 ft at 7:30AM Apr 22, 2014Observed: 3.63 ft at 7:45AM Apr 22, 2014Observed: 3.63 ft at 8:00AM Apr 22, 2014Observed: 3.63 ft at 8:15AM Apr 22, 2014Observed: 3.62 ft at 8:30AM Apr 22, 2014Observed: 3.62 ft at 8:45AM Apr 22, 2014Observed: 3.62 ft at 9:00AM Apr 22, 2014Observed: 3.62 ft at 9:15AM Apr 22, 2014Observed: 3.61 ft at 9:30AM Apr 22, 2014Observed: 3.61 ft at 9:45AM Apr 22, 2014Observed: 3.61 ft at 10:00AM Apr 22, 2014Observed: 3.6 ft at 10:15AM Apr 22, 2014Observed: 3.6 ft at 10:30AM Apr 22, 2014Observed: 3.6 ft at 10:45AM Apr 22, 2014Observed: 3.6 ft at 11:00AM Apr 22, 2014Observed: 3.59 ft at 11:15AM Apr 22, 2014Observed: 3.59 ft at 11:30AM Apr 22, 2014Observed: 3.59 ft at 11:45AM Apr 22, 2014Observed: 3.58 ft at 12:00PM Apr 22, 2014Observed: 3.58 ft at 12:15PM Apr 22, 2014Observed: 3.58 ft at 12:30PM Apr 22, 2014Observed: 3.58 ft at 12:45PM Apr 22, 2014Observed: 3.57 ft at 1:00PM Apr 22, 2014Observed: 3.57 ft at 1:15PM Apr 22, 2014Observed: 3.57 ft at 1:30PM Apr 22, 2014Observed: 3.57 ft at 1:45PM Apr 22, 2014Observed: 3.56 ft at 2:00PM Apr 22, 2014Observed: 3.56 ft at 2:15PM Apr 22, 2014Observed: 3.56 ft at 2:30PM Apr 22, 2014Observed: 3.56 ft at 2:45PM Apr 22, 2014Observed: 3.55 ft at 3:00PM Apr 22, 2014Observed: 3.55 ft at 3:15PM Apr 22, 2014Observed: 3.55 ft at 3:30PM Apr 22, 2014Observed: 3.55 ft at 3:45PM Apr 22, 2014Observed: 3.54 ft at 4:00PM Apr 22, 2014Observed: 3.54 ft at 4:15PM Apr 22, 2014Observed: 3.54 ft at 4:30PM Apr 22, 2014Observed: 3.54 ft at 4:45PM Apr 22, 2014Observed: 3.54 ft at 5:00PM Apr 22, 2014Observed: 3.54 ft at 5:15PM Apr 22, 2014Observed: 3.53 ft at 5:30PM Apr 22, 2014Observed: 3.53 ft at 5:45PM Apr 22, 2014Observed: 3.53 ft at 6:00PM Apr 22, 2014Observed: 3.52 ft at 6:15PM Apr 22, 2014Observed: 3.52 ft at 6:30PM Apr 22, 2014Observed: 3.52 ft at 6:45PM Apr 22, 2014Observed: 3.52 ft at 7:00PM Apr 22, 2014Observed: 3.52 ft at 7:15PM Apr 22, 2014Observed: 3.51 ft at 7:30PM Apr 22, 2014Observed: 3.52 ft at 7:45PM Apr 22, 2014Observed: 3.51 ft at 8:00PM Apr 22, 2014Observed: 3.51 ft at 8:15PM Apr 22, 2014Observed: 3.51 ft at 8:30PM Apr 22, 2014Observed: 3.51 ft at 8:45PM Apr 22, 2014Observed: 3.51 ft at 9:00PM Apr 22, 2014Observed: 3.51 ft at 9:15PM Apr 22, 2014Observed: 3.51 ft at 9:30PM Apr 22, 2014Observed: 3.51 ft at 9:45PM Apr 22, 2014Observed: 3.51 ft at 10:00PM Apr 22, 2014Observed: 3.51 ft at 10:15PM Apr 22, 2014Observed: 3.51 ft at 10:30PM Apr 22, 2014Observed: 3.51 ft at 10:45PM Apr 22, 2014Observed: 3.51 ft at 11:00PM Apr 22, 2014Observed: 3.51 ft at 11:15PM Apr 22, 2014Observed: 3.52 ft at 11:30PM Apr 22, 2014Observed: 3.52 ft at 11:45PM Apr 22, 2014Observed: 3.52 ft at 12:00AM Apr 23, 2014Observed: 3.52 ft at 12:15AM Apr 23, 2014Observed: 3.52 ft at 12:30AM Apr 23, 2014Observed: 3.52 ft at 12:45AM Apr 23, 2014Observed: 3.52 ft at 1:00AM Apr 23, 2014Observed: 3.52 ft at 1:15AM Apr 23, 2014Observed: 3.51 ft at 1:30AM Apr 23, 2014Observed: 3.51 ft at 1:45AM Apr 23, 2014Observed: 3.51 ft at 2:00AM Apr 23, 2014Observed: 3.52 ft at 2:15AM Apr 23, 2014Observed: 3.52 ft at 2:30AM Apr 23, 2014Observed: 3.52 ft at 2:45AM Apr 23, 2014Observed: 3.52 ft at 3:00AM Apr 23, 2014Observed: 3.52 ft at 3:15AM Apr 23, 2014Observed: 3.53 ft at 3:30AM Apr 23, 2014Observed: 3.53 ft at 3:45AM Apr 23, 2014Observed: 3.53 ft at 4:00AM Apr 23, 2014Observed: 3.53 ft at 4:15AM Apr 23, 2014Observed: 3.53 ft at 4:30AM Apr 23, 2014Observed: 3.54 ft at 4:45AM Apr 23, 2014Observed: 3.54 ft at 5:00AM Apr 23, 2014Observed: 3.54 ft at 5:15AM Apr 23, 2014Observed: 3.54 ft at 5:30AM Apr 23, 2014Observed: 3.54 ft at 5:45AM Apr 23, 2014Observed: 3.54 ft at 6:00AM Apr 23, 2014Observed: 3.54 ft at 6:15AM Apr 23, 2014Observed: 3.54 ft at 6:30AM Apr 23, 2014Observed: 3.54 ft at 6:45AM Apr 23, 2014Observed: 3.54 ft at 7:00AM Apr 23, 2014Observed: 3.54 ft at 7:15AM Apr 23, 2014Observed: 3.53 ft at 7:30AM Apr 23, 2014Observed: 3.53 ft at 7:45AM Apr 23, 2014Observed: 3.52 ft at 8:00AM Apr 23, 2014Observed: 3.52 ft at 8:15AM Apr 23, 2014Observed: 3.52 ft at 8:30AM Apr 23, 2014Observed: 3.52 ft at 8:45AM Apr 23, 2014Observed: 3.51 ft at 9:00AM Apr 23, 2014Observed: 3.51 ft at 9:15AM Apr 23, 2014Observed: 3.51 ft at 9:30AM Apr 23, 2014Observed: 3.51 ft at 9:45AM Apr 23, 2014Observed: 3.51 ft at 10:00AM Apr 23, 2014Observed: 3.51 ft at 10:15AM Apr 23, 2014Observed: 3.51 ft at 10:30AM Apr 23, 2014Observed: 3.51 ft at 10:45AM Apr 23, 2014Observed: 3.51 ft at 11:00AM Apr 23, 2014Observed: 3.5 ft at 11:15AM Apr 23, 2014Observed: 3.5 ft at 11:30AM Apr 23, 2014Observed: 3.5 ft at 11:45AM Apr 23, 2014Observed: 3.49 ft at 12:00PM Apr 23, 2014Observed: 3.49 ft at 12:15PM Apr 23, 2014Observed: 3.48 ft at 12:30PM Apr 23, 2014Observed: 3.48 ft at 12:45PM Apr 23, 2014Observed: 3.47 ft at 1:00PM Apr 23, 2014Observed: 3.48 ft at 1:15PM Apr 23, 2014Observed: 3.48 ft at 1:30PM Apr 23, 2014Observed: 3.48 ft at 1:45PM Apr 23, 2014Observed: 3.47 ft at 2:00PM Apr 23, 2014Observed: 3.46 ft at 2:15PM Apr 23, 2014Observed: 3.47 ft at 2:30PM Apr 23, 2014Observed: 3.46 ft at 2:45PM Apr 23, 2014Observed: 3.45 ft at 3:00PM Apr 23, 2014Observed: 3.45 ft at 3:15PM Apr 23, 2014Observed: 3.45 ft at 3:30PM Apr 23, 2014Observed: 3.45 ft at 3:45PM Apr 23, 2014Observed: 3.44 ft at 4:00PM Apr 23, 2014Observed: 3.44 ft at 4:15PM Apr 23, 2014Observed: 3.44 ft at 4:30PM Apr 23, 2014Observed: 3.43 ft at 4:45PM Apr 23, 2014Observed: 3.43 ft at 5:00PM Apr 23, 2014Observed: 3.42 ft at 5:15PM Apr 23, 2014Observed: 3.41 ft at 5:30PM Apr 23, 2014Observed: 3.42 ft at 5:45PM Apr 23, 2014Observed: 3.42 ft at 6:00PM Apr 23, 2014Observed: 3.42 ft at 6:15PM Apr 23, 2014Observed: 3.42 ft at 6:30PM Apr 23, 2014Observed: 3.42 ft at 6:45PM Apr 23, 2014Observed: 3.42 ft at 7:00PM Apr 23, 2014Observed: 3.42 ft at 7:15PM Apr 23, 2014Observed: 3.41 ft at 7:30PM Apr 23, 2014Observed: 3.41 ft at 7:45PM Apr 23, 2014Observed: 3.41 ft at 8:00PM Apr 23, 2014Observed: 3.4 ft at 8:15PM Apr 23, 2014Observed: 3.4 ft at 8:30PM Apr 23, 2014Observed: 3.4 ft at 8:45PM Apr 23, 2014Observed: 3.39 ft at 9:00PM Apr 23, 2014Observed: 3.39 ft at 9:15PM Apr 23, 2014Observed: 3.39 ft at 9:30PM Apr 23, 2014Observed: 3.39 ft at 9:45PM Apr 23, 2014Observed: 3.39 ft at 10:00PM Apr 23, 2014Observed: 3.39 ft at 10:15PM Apr 23, 2014Observed: 3.39 ft at 10:30PM Apr 23, 2014Observed: 3.38 ft at 10:45PM Apr 23, 2014Observed: 3.38 ft at 11:00PM Apr 23, 2014Observed: 3.38 ft at 11:15PM Apr 23, 2014Observed: 3.38 ft at 11:30PM Apr 23, 2014Observed: 3.38 ft at 11:45PM Apr 23, 2014Observed: 3.38 ft at 12:00AM Apr 24, 2014Observed: 3.37 ft at 12:15AM Apr 24, 2014Observed: 3.37 ft at 12:30AM Apr 24, 2014Observed: 3.37 ft at 12:45AM Apr 24, 2014Observed: 3.37 ft at 1:00AM Apr 24, 2014Observed: 3.37 ft at 1:15AM Apr 24, 2014Observed: 3.37 ft at 1:30AM Apr 24, 2014Observed: 3.37 ft at 1:45AM Apr 24, 2014Highest Forecast: 3.3 ft 8:00AM Apr 24, 2014Forecast: 3.2 ft 2:00PM Apr 24, 2014Forecast: 3.2 ft 8:00PM Apr 24, 2014Forecast: 3.1 ft 2:00AM Apr 25, 2014Forecast: 3.1 ft 8:00AM Apr 25, 2014Forecast: 3.1 ft 2:00PM Apr 25, 2014Forecast: 3.1 ft 8:00PM Apr 25, 2014Forecast: 3.1 ft 2:00AM Apr 26, 2014Forecast: 3.1 ft 8:00AM Apr 26, 2014USGS--Water Resources of the United StatesPORM2(plotting HGIRG) Graph Created (2:21AM Apr 24, 2014)ObservedForecast (issued 9:11AM Apr 23)Latest observed value: 3.37 ft at 1:45 AM EDT 24-Apr-2014. Flood Stage is 16 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 at Point of Rocks are issued routinely year-round.
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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
Zoom Level: 12
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
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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  

Current/Historical Observations:

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NWS Information
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Page last modified: 8-Apr-2014 8:36 AM
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