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Hydrograph River at a Glance Download
Potomac River at Lewisetta (IN MLLW) Tide Height (ft)Observed: 2.42 ft at 8:36AM Sep 26, 2020Observed: 2.45 ft at 8:42AM Sep 26, 2020Observed: 2.46 ft at 8:48AM Sep 26, 2020Observed: 2.47 ft at 8:54AM Sep 26, 2020Observed: 2.49 ft at 9:00AM Sep 26, 2020Observed: 2.5 ft at 9:06AM Sep 26, 2020Observed: 2.52 ft at 9:12AM Sep 26, 2020Observed: 2.54 ft at 9:18AM Sep 26, 2020Observed: 2.55 ft at 9:24AM Sep 26, 2020Observed: 2.55 ft at 9:30AM Sep 26, 2020Observed: 2.56 ft at 9:36AM Sep 26, 2020Observed: 2.57 ft at 9:42AM Sep 26, 2020Observed: 2.58 ft at 9:48AM Sep 26, 2020Observed: 2.58 ft at 9:54AM Sep 26, 2020Observed: 2.58 ft at 10:00AM Sep 26, 2020Highest Observation: 2.59 ft at 10:06AM Sep 26, 2020Highest Observation: 2.59 ft at 10:12AM Sep 26, 2020Observed: 2.58 ft at 10:18AM Sep 26, 2020Observed: 2.57 ft at 10:24AM Sep 26, 2020Observed: 2.57 ft at 10:30AM Sep 26, 2020Observed: 2.57 ft at 10:36AM Sep 26, 2020Observed: 2.58 ft at 10:42AM Sep 26, 2020Observed: 2.56 ft at 10:48AM Sep 26, 2020Observed: 2.53 ft at 10:54AM Sep 26, 2020Observed: 2.51 ft at 11:00AM Sep 26, 2020Observed: 2.5 ft at 11:06AM Sep 26, 2020Observed: 2.48 ft at 11:12AM Sep 26, 2020Observed: 2.47 ft at 11:18AM Sep 26, 2020Observed: 2.44 ft at 11:24AM Sep 26, 2020Observed: 2.41 ft at 11:30AM Sep 26, 2020Observed: 2.37 ft at 11:42AM Sep 26, 2020Observed: 2.34 ft at 11:48AM Sep 26, 2020Observed: 2.34 ft at 11:54AM Sep 26, 2020Observed: 2.31 ft at 12:00PM Sep 26, 2020Observed: 2.29 ft at 12:06PM Sep 26, 2020Observed: 2.26 ft at 12:12PM Sep 26, 2020Observed: 2.23 ft at 12:18PM Sep 26, 2020Observed: 2.2 ft at 12:24PM Sep 26, 2020Observed: 2.18 ft at 12:30PM Sep 26, 2020Observed: 2.15 ft at 12:36PM Sep 26, 2020Observed: 2.13 ft at 12:42PM Sep 26, 2020Observed: 2.1 ft at 12:48PM Sep 26, 2020Observed: 2.06 ft at 12:54PM Sep 26, 2020Observed: 2.04 ft at 1:00PM Sep 26, 2020Observed: 2.01 ft at 1:06PM Sep 26, 2020Observed: 1.98 ft at 1:12PM Sep 26, 2020Observed: 1.95 ft at 1:18PM Sep 26, 2020Observed: 1.92 ft at 1:24PM Sep 26, 2020Observed: 1.89 ft at 1:30PM Sep 26, 2020Observed: 1.85 ft at 1:36PM Sep 26, 2020Observed: 1.81 ft at 1:42PM Sep 26, 2020Observed: 1.79 ft at 1:48PM Sep 26, 2020Observed: 1.76 ft at 1:54PM Sep 26, 2020Observed: 1.73 ft at 2:00PM Sep 26, 2020Observed: 1.71 ft at 2:06PM Sep 26, 2020Observed: 1.68 ft at 2:12PM Sep 26, 2020Observed: 1.66 ft at 2:18PM Sep 26, 2020Observed: 1.64 ft at 2:24PM Sep 26, 2020Observed: 1.62 ft at 2:30PM Sep 26, 2020Observed: 1.6 ft at 2:36PM Sep 26, 2020Observed: 1.59 ft at 2:42PM Sep 26, 2020Observed: 1.56 ft at 2:48PM Sep 26, 2020Observed: 1.55 ft at 2:54PM Sep 26, 2020Observed: 1.53 ft at 3:00PM Sep 26, 2020Observed: 1.5 ft at 3:06PM Sep 26, 2020Observed: 1.49 ft at 3:12PM Sep 26, 2020Observed: 1.48 ft at 3:18PM Sep 26, 2020Observed: 1.46 ft at 3:24PM Sep 26, 2020Observed: 1.44 ft at 3:30PM Sep 26, 2020Observed: 1.43 ft at 3:36PM Sep 26, 2020Observed: 1.41 ft at 3:42PM Sep 26, 2020Observed: 1.39 ft at 3:48PM Sep 26, 2020Observed: 1.38 ft at 3:54PM Sep 26, 2020Observed: 1.37 ft at 4:00PM Sep 26, 2020Observed: 1.36 ft at 4:06PM Sep 26, 2020Observed: 1.35 ft at 4:12PM Sep 26, 2020Observed: 1.34 ft at 4:18PM Sep 26, 2020Observed: 1.33 ft at 4:24PM Sep 26, 2020Observed: 1.32 ft at 4:30PM Sep 26, 2020Observed: 1.31 ft at 4:36PM Sep 26, 2020Observed: 1.3 ft at 4:42PM Sep 26, 2020Observed: 1.3 ft at 4:48PM Sep 26, 2020Observed: 1.3 ft at 4:54PM Sep 26, 2020Observed: 1.31 ft at 5:00PM Sep 26, 2020Observed: 1.32 ft at 5:06PM Sep 26, 2020Observed: 1.34 ft at 5:12PM Sep 26, 2020Observed: 1.35 ft at 5:18PM Sep 26, 2020Observed: 1.37 ft at 5:24PM Sep 26, 2020Observed: 1.39 ft at 5:30PM Sep 26, 2020Observed: 1.41 ft at 5:36PM Sep 26, 2020Observed: 1.44 ft at 5:42PM Sep 26, 2020Observed: 1.46 ft at 5:48PM Sep 26, 2020Observed: 1.48 ft at 5:54PM Sep 26, 2020Observed: 1.52 ft at 6:00PM Sep 26, 2020Observed: 1.54 ft at 6:06PM Sep 26, 2020Observed: 1.57 ft at 6:12PM Sep 26, 2020Observed: 1.6 ft at 6:18PM Sep 26, 2020Observed: 1.63 ft at 6:24PM Sep 26, 2020Observed: 1.66 ft at 6:30PM Sep 26, 2020Observed: 1.69 ft at 6:36PM Sep 26, 2020Observed: 1.71 ft at 6:42PM Sep 26, 2020Observed: 1.74 ft at 6:48PM Sep 26, 2020Observed: 1.77 ft at 6:54PM Sep 26, 2020Observed: 1.81 ft at 7:00PM Sep 26, 2020Observed: 1.84 ft at 7:06PM Sep 26, 2020Observed: 1.87 ft at 7:12PM Sep 26, 2020Observed: 1.9 ft at 7:18PM Sep 26, 2020Observed: 1.93 ft at 7:24PM Sep 26, 2020Observed: 1.96 ft at 7:30PM Sep 26, 2020Observed: 1.99 ft at 7:36PM Sep 26, 2020Observed: 2.02 ft at 7:42PM Sep 26, 2020Observed: 2.13 ft at 8:00PM Sep 26, 2020Observed: 2.15 ft at 8:06PM Sep 26, 2020Observed: 2.18 ft at 8:12PM Sep 26, 2020Observed: 2.21 ft at 8:18PM Sep 26, 2020Observed: 2.24 ft at 8:24PM Sep 26, 2020Observed: 2.27 ft at 8:30PM Sep 26, 2020Observed: 2.3 ft at 8:36PM Sep 26, 2020Observed: 2.32 ft at 8:42PM Sep 26, 2020Observed: 2.34 ft at 8:48PM Sep 26, 2020Observed: 2.36 ft at 8:54PM Sep 26, 2020Observed: 2.38 ft at 9:00PM Sep 26, 2020Observed: 2.4 ft at 9:06PM Sep 26, 2020Observed: 2.42 ft at 9:12PM Sep 26, 2020Observed: 2.44 ft at 9:18PM Sep 26, 2020Observed: 2.46 ft at 9:24PM Sep 26, 2020Observed: 2.47 ft at 9:30PM Sep 26, 2020Observed: 2.49 ft at 9:36PM Sep 26, 2020Observed: 2.51 ft at 9:42PM Sep 26, 2020Observed: 2.52 ft at 9:48PM Sep 26, 2020Observed: 2.53 ft at 9:54PM Sep 26, 2020Observed: 2.54 ft at 10:00PM Sep 26, 2020Observed: 2.55 ft at 10:06PM Sep 26, 2020Observed: 2.56 ft at 10:12PM Sep 26, 2020Observed: 2.57 ft at 10:18PM Sep 26, 2020Observed: 2.57 ft at 10:24PM Sep 26, 2020Observed: 2.58 ft at 10:30PM Sep 26, 2020Observed: 2.58 ft at 10:36PM Sep 26, 2020Observed: 2.58 ft at 10:42PM Sep 26, 2020Observed: 2.58 ft at 10:48PM Sep 26, 2020Observed: 2.58 ft at 10:54PM Sep 26, 2020Observed: 2.57 ft at 11:00PM Sep 26, 2020Observed: 2.57 ft at 11:06PM Sep 26, 2020Observed: 2.56 ft at 11:12PM Sep 26, 2020Observed: 2.55 ft at 11:18PM Sep 26, 2020Observed: 2.54 ft at 11:24PM Sep 26, 2020Observed: 2.52 ft at 11:30PM Sep 26, 2020Observed: 2.51 ft at 11:36PM Sep 26, 2020Observed: 2.49 ft at 11:42PM Sep 26, 2020Observed: 2.47 ft at 11:48PM Sep 26, 2020Observed: 2.45 ft at 11:54PM Sep 26, 2020Observed: 2.43 ft at 12:00AM Sep 27, 2020Observed: 2.4 ft at 12:06AM Sep 27, 2020Observed: 2.39 ft at 12:12AM Sep 27, 2020Observed: 2.36 ft at 12:18AM Sep 27, 2020Observed: 2.34 ft at 12:24AM Sep 27, 2020Observed: 2.32 ft at 12:30AM Sep 27, 2020Observed: 2.28 ft at 12:36AM Sep 27, 2020Observed: 2.25 ft at 12:42AM Sep 27, 2020Observed: 2.22 ft at 12:48AM Sep 27, 2020Observed: 2.2 ft at 12:54AM Sep 27, 2020Observed: 2.17 ft at 1:00AM Sep 27, 2020Observed: 2.14 ft at 1:06AM Sep 27, 2020Observed: 2.1 ft at 1:12AM Sep 27, 2020Observed: 2.07 ft at 1:18AM Sep 27, 2020Observed: 2.04 ft at 1:24AM Sep 27, 2020Observed: 2 ft at 1:30AM Sep 27, 2020Observed: 1.98 ft at 1:36AM Sep 27, 2020Observed: 1.95 ft at 1:42AM Sep 27, 2020Observed: 1.92 ft at 1:48AM Sep 27, 2020Observed: 1.89 ft at 1:54AM Sep 27, 2020Observed: 1.86 ft at 2:00AM Sep 27, 2020Observed: 1.82 ft at 2:06AM Sep 27, 2020Observed: 1.78 ft at 2:12AM Sep 27, 2020Observed: 1.76 ft at 2:18AM Sep 27, 2020Observed: 1.72 ft at 2:24AM Sep 27, 2020Observed: 1.7 ft at 2:30AM Sep 27, 2020Observed: 1.68 ft at 2:36AM Sep 27, 2020Observed: 1.65 ft at 2:42AM Sep 27, 2020Observed: 1.62 ft at 2:48AM Sep 27, 2020Observed: 1.6 ft at 2:54AM Sep 27, 2020Observed: 1.58 ft at 3:00AM Sep 27, 2020Observed: 1.55 ft at 3:06AM Sep 27, 2020Observed: 1.53 ft at 3:12AM Sep 27, 2020Observed: 1.51 ft at 3:18AM Sep 27, 2020Observed: 1.48 ft at 3:24AM Sep 27, 2020Observed: 1.45 ft at 3:30AM Sep 27, 2020Observed: 1.43 ft at 3:36AM Sep 27, 2020Observed: 1.4 ft at 3:42AM Sep 27, 2020Observed: 1.38 ft at 3:48AM Sep 27, 2020Observed: 1.37 ft at 3:54AM Sep 27, 2020Observed: 1.35 ft at 4:00AM Sep 27, 2020Observed: 1.33 ft at 4:06AM Sep 27, 2020Observed: 1.31 ft at 4:12AM Sep 27, 2020Observed: 1.3 ft at 4:18AM Sep 27, 2020Observed: 1.28 ft at 4:24AM Sep 27, 2020Observed: 1.27 ft at 4:30AM Sep 27, 2020Observed: 1.27 ft at 4:36AM Sep 27, 2020Observed: 1.26 ft at 4:42AM Sep 27, 2020Observed: 1.26 ft at 4:48AM Sep 27, 2020Observed: 1.26 ft at 4:54AM Sep 27, 2020Observed: 1.25 ft at 5:00AM Sep 27, 2020Observed: 1.25 ft at 5:06AM Sep 27, 2020Observed: 1.25 ft at 5:12AM Sep 27, 2020Observed: 1.25 ft at 5:18AM Sep 27, 2020Observed: 1.26 ft at 5:24AM Sep 27, 2020Observed: 1.26 ft at 5:30AM Sep 27, 2020Observed: 1.26 ft at 5:36AM Sep 27, 2020Observed: 1.27 ft at 5:42AM Sep 27, 2020Observed: 1.28 ft at 5:48AM Sep 27, 2020Observed: 1.29 ft at 5:54AM Sep 27, 2020Observed: 1.3 ft at 6:00AM Sep 27, 2020Observed: 1.31 ft at 6:06AM Sep 27, 2020Observed: 1.32 ft at 6:12AM Sep 27, 2020Observed: 1.33 ft at 6:18AM Sep 27, 2020Observed: 1.35 ft at 6:24AM Sep 27, 2020Observed: 1.36 ft at 6:30AM Sep 27, 2020Observed: 1.38 ft at 6:36AM Sep 27, 2020Observed: 1.41 ft at 6:42AM Sep 27, 2020Observed: 1.42 ft at 6:48AM Sep 27, 2020Observed: 1.44 ft at 6:54AM Sep 27, 2020Observed: 1.48 ft at 7:00AM Sep 27, 2020Observed: 1.5 ft at 7:06AM Sep 27, 2020Observed: 1.53 ft at 7:12AM Sep 27, 2020Observed: 1.56 ft at 7:18AM Sep 27, 2020Observed: 1.57 ft at 7:24AM Sep 27, 2020Observed: 1.6 ft at 7:30AM Sep 27, 2020Observed: 1.63 ft at 7:36AM Sep 27, 2020Observed: 1.66 ft at 7:42AM Sep 27, 2020Observed: 1.69 ft at 7:48AM Sep 27, 2020Observed: 1.72 ft at 7:54AM Sep 27, 2020Observed: 1.75 ft at 8:00AM Sep 27, 2020Observed: 1.79 ft at 8:06AM Sep 27, 2020Observed: 1.81 ft at 8:12AM Sep 27, 2020Observed: 1.84 ft at 8:18AM Sep 27, 2020Observed: 1.87 ft at 8:24AM Sep 27, 2020Observed: 1.9 ft at 8:30AM Sep 27, 2020Observed: 1.93 ft at 8:36AM Sep 27, 2020Observed: 1.96 ft at 8:42AM Sep 27, 2020Observed: 1.98 ft at 8:48AM Sep 27, 2020Observed: 2.01 ft at 8:54AM Sep 27, 2020Observed: 2.03 ft at 9:00AM Sep 27, 2020Observed: 2.06 ft at 9:06AM Sep 27, 2020Observed: 2.09 ft at 9:12AM Sep 27, 2020Observed: 2.11 ft at 9:18AM Sep 27, 2020Observed: 2.13 ft at 9:24AM Sep 27, 2020Observed: 2.16 ft at 9:30AM Sep 27, 2020Observed: 2.18 ft at 9:36AM Sep 27, 2020Observed: 2.19 ft at 9:42AM Sep 27, 2020Observed: 2.21 ft at 9:48AM Sep 27, 2020Observed: 2.23 ft at 9:54AM Sep 27, 2020Observed: 2.24 ft at 10:00AM Sep 27, 2020Observed: 2.26 ft at 10:06AM Sep 27, 2020Observed: 2.27 ft at 10:12AM Sep 27, 2020Observed: 2.28 ft at 10:18AM Sep 27, 2020Observed: 2.29 ft at 10:24AM Sep 27, 2020Observed: 2.29 ft at 10:30AM Sep 27, 2020Observed: 2.3 ft at 10:36AM Sep 27, 2020Observed: 2.3 ft at 10:42AM Sep 27, 2020Observed: 2.31 ft at 10:48AM Sep 27, 2020Observed: 2.3 ft at 10:54AM Sep 27, 2020Observed: 2.31 ft at 11:00AM Sep 27, 2020Observed: 2.31 ft at 11:06AM Sep 27, 2020Observed: 2.31 ft at 11:12AM Sep 27, 2020Observed: 2.31 ft at 11:18AM Sep 27, 2020Observed: 2.3 ft at 11:24AM Sep 27, 2020Observed: 2.3 ft at 11:30AM Sep 27, 2020Observed: 2.29 ft at 11:36AM Sep 27, 2020Observed: 2.28 ft at 11:42AM Sep 27, 2020Observed: 2.28 ft at 11:48AM Sep 27, 2020Observed: 2.27 ft at 11:54AM Sep 27, 2020Observed: 2.26 ft at 12:00PM Sep 27, 2020Observed: 2.24 ft at 12:06PM Sep 27, 2020Observed: 2.22 ft at 12:12PM Sep 27, 2020Observed: 2.21 ft at 12:18PM Sep 27, 2020Observed: 2.19 ft at 12:24PM Sep 27, 2020Observed: 2.17 ft at 12:30PM Sep 27, 2020Observed: 2.15 ft at 12:36PM Sep 27, 2020Observed: 2.13 ft at 12:42PM Sep 27, 2020Observed: 2.11 ft at 12:48PM Sep 27, 2020Observed: 2.09 ft at 12:54PM Sep 27, 2020Observed: 2.06 ft at 1:00PM Sep 27, 2020Observed: 2.04 ft at 1:06PM Sep 27, 2020Observed: 2.02 ft at 1:12PM Sep 27, 2020Observed: 1.99 ft at 1:18PM Sep 27, 2020Observed: 1.96 ft at 1:24PM Sep 27, 2020Observed: 1.92 ft at 1:30PM Sep 27, 2020Observed: 1.89 ft at 1:36PM Sep 27, 2020Observed: 1.86 ft at 1:42PM Sep 27, 2020Observed: 1.84 ft at 1:48PM Sep 27, 2020Observed: 1.81 ft at 1:54PM Sep 27, 2020Observed: 1.77 ft at 2:00PM Sep 27, 2020Observed: 1.75 ft at 2:06PM Sep 27, 2020Observed: 1.71 ft at 2:12PM Sep 27, 2020Observed: 1.68 ft at 2:18PM Sep 27, 2020Observed: 1.65 ft at 2:24PM Sep 27, 2020Observed: 1.62 ft at 2:30PM Sep 27, 2020Observed: 1.6 ft at 2:36PM Sep 27, 2020Observed: 1.57 ft at 2:42PM Sep 27, 2020Observed: 1.54 ft at 2:48PM Sep 27, 2020Observed: 1.51 ft at 2:54PM Sep 27, 2020Observed: 1.48 ft at 3:00PM Sep 27, 2020Observed: 1.45 ft at 3:06PM Sep 27, 2020Observed: 1.42 ft at 3:12PM Sep 27, 2020Observed: 1.39 ft at 3:18PM Sep 27, 2020Observed: 1.35 ft at 3:24PM Sep 27, 2020Observed: 1.33 ft at 3:30PM Sep 27, 2020Observed: 1.31 ft at 3:36PM Sep 27, 2020Observed: 1.29 ft at 3:42PM Sep 27, 2020Observed: 1.28 ft at 3:48PM Sep 27, 2020Observed: 1.25 ft at 3:54PM Sep 27, 2020Observed: 1.24 ft at 4:00PM Sep 27, 2020Observed: 1.21 ft at 4:06PM Sep 27, 2020Observed: 1.2 ft at 4:12PM Sep 27, 2020Observed: 1.18 ft at 4:18PM Sep 27, 2020Observed: 1.17 ft at 4:24PM Sep 27, 2020Observed: 1.15 ft at 4:30PM Sep 27, 2020Observed: 1.15 ft at 4:36PM Sep 27, 2020Observed: 1.13 ft at 4:42PM Sep 27, 2020Observed: 1.11 ft at 4:48PM Sep 27, 2020Observed: 1.1 ft at 4:54PM Sep 27, 2020Observed: 1.09 ft at 5:00PM Sep 27, 2020Observed: 1.09 ft at 5:06PM Sep 27, 2020Observed: 1.08 ft at 5:12PM Sep 27, 2020Observed: 1.06 ft at 5:18PM Sep 27, 2020Observed: 1.06 ft at 5:24PM Sep 27, 2020Observed: 1.06 ft at 5:30PM Sep 27, 2020Observed: 1.06 ft at 5:36PM Sep 27, 2020Observed: 1.07 ft at 5:42PM Sep 27, 2020Observed: 1.07 ft at 5:48PM Sep 27, 2020Observed: 1.08 ft at 5:54PM Sep 27, 2020Observed: 1.09 ft at 6:00PM Sep 27, 2020Observed: 1.09 ft at 6:06PM Sep 27, 2020Observed: 1.1 ft at 6:12PM Sep 27, 2020Observed: 1.12 ft at 6:18PM Sep 27, 2020Observed: 1.14 ft at 6:24PM Sep 27, 2020Observed: 1.16 ft at 6:30PM Sep 27, 2020Observed: 1.18 ft at 6:36PM Sep 27, 2020Observed: 1.2 ft at 6:42PM Sep 27, 2020Observed: 1.22 ft at 6:48PM Sep 27, 2020Observed: 1.24 ft at 6:54PM Sep 27, 2020Observed: 1.27 ft at 7:00PM Sep 27, 2020Observed: 1.3 ft at 7:06PM Sep 27, 2020Observed: 1.33 ft at 7:12PM Sep 27, 2020Observed: 1.35 ft at 7:18PM Sep 27, 2020Observed: 1.38 ft at 7:24PM Sep 27, 2020Observed: 1.41 ft at 7:30PM Sep 27, 2020Observed: 1.45 ft at 7:36PM Sep 27, 2020Observed: 1.49 ft at 7:42PM Sep 27, 2020Observed: 1.58 ft at 8:00PM Sep 27, 2020Observed: 1.61 ft at 8:06PM Sep 27, 2020Observed: 1.64 ft at 8:12PM Sep 27, 2020Observed: 1.66 ft at 8:18PM Sep 27, 2020Observed: 1.7 ft at 8:24PM Sep 27, 2020Observed: 1.74 ft at 8:30PM Sep 27, 2020Observed: 1.77 ft at 8:36PM Sep 27, 2020Observed: 1.8 ft at 8:42PM Sep 27, 2020Observed: 1.84 ft at 8:48PM Sep 27, 2020Observed: 1.87 ft at 8:54PM Sep 27, 2020Observed: 1.9 ft at 9:00PM Sep 27, 2020Observed: 1.93 ft at 9:06PM Sep 27, 2020Observed: 1.96 ft at 9:12PM Sep 27, 2020Observed: 1.99 ft at 9:18PM Sep 27, 2020Observed: 2.02 ft at 9:24PM Sep 27, 2020Observed: 2.05 ft at 9:30PM Sep 27, 2020Observed: 2.07 ft at 9:36PM Sep 27, 2020Observed: 2.09 ft at 9:42PM Sep 27, 2020Observed: 2.12 ft at 9:48PM Sep 27, 2020Observed: 2.15 ft at 9:54PM Sep 27, 2020Observed: 2.17 ft at 10:00PM Sep 27, 2020Observed: 2.19 ft at 10:06PM Sep 27, 2020Observed: 2.21 ft at 10:12PM Sep 27, 2020Observed: 2.24 ft at 10:18PM Sep 27, 2020Observed: 2.26 ft at 10:24PM Sep 27, 2020Observed: 2.27 ft at 10:30PM Sep 27, 2020Observed: 2.29 ft at 10:36PM Sep 27, 2020Observed: 2.31 ft at 10:42PM Sep 27, 2020Observed: 2.33 ft at 10:48PM Sep 27, 2020Observed: 2.34 ft at 10:54PM Sep 27, 2020Observed: 2.35 ft at 11:00PM Sep 27, 2020Observed: 2.36 ft at 11:06PM Sep 27, 2020Observed: 2.38 ft at 11:12PM Sep 27, 2020Observed: 2.39 ft at 11:18PM Sep 27, 2020Observed: 2.39 ft at 11:24PM Sep 27, 2020Observed: 2.39 ft at 11:30PM Sep 27, 2020Observed: 2.39 ft at 11:36PM Sep 27, 2020Observed: 2.4 ft at 11:42PM Sep 27, 2020Observed: 2.4 ft at 11:48PM Sep 27, 2020Observed: 2.41 ft at 11:54PM Sep 27, 2020Observed: 2.4 ft at 12:00AM Sep 28, 2020Observed: 2.4 ft at 12:06AM Sep 28, 2020Observed: 2.39 ft at 12:12AM Sep 28, 2020Observed: 2.39 ft at 12:18AM Sep 28, 2020Observed: 2.38 ft at 12:24AM Sep 28, 2020Observed: 2.37 ft at 12:30AM Sep 28, 2020Observed: 2.35 ft at 12:36AM Sep 28, 2020Observed: 2.34 ft at 12:42AM Sep 28, 2020Observed: 2.32 ft at 12:48AM Sep 28, 2020Observed: 2.3 ft at 12:54AM Sep 28, 2020Observed: 2.28 ft at 1:00AM Sep 28, 2020Observed: 2.25 ft at 1:06AM Sep 28, 2020Observed: 2.23 ft at 1:12AM Sep 28, 2020Observed: 2.21 ft at 1:18AM Sep 28, 2020Observed: 2.18 ft at 1:24AM Sep 28, 2020Observed: 2.16 ft at 1:30AM Sep 28, 2020Observed: 2.12 ft at 1:36AM Sep 28, 2020Observed: 2.1 ft at 1:42AM Sep 28, 2020Observed: 1.87 ft at 2:30AM Sep 28, 2020Observed: 1.84 ft at 2:36AM Sep 28, 2020Observed: 1.79 ft at 2:42AM Sep 28, 2020Observed: 1.75 ft at 2:48AM Sep 28, 2020Observed: 1.72 ft at 2:54AM Sep 28, 2020Observed: 1.69 ft at 3:00AM Sep 28, 2020Observed: 1.67 ft at 3:06AM Sep 28, 2020Observed: 1.64 ft at 3:12AM Sep 28, 2020Observed: 1.6 ft at 3:18AM Sep 28, 2020Observed: 1.58 ft at 3:24AM Sep 28, 2020Observed: 1.55 ft at 3:30AM Sep 28, 2020Observed: 1.52 ft at 3:36AM Sep 28, 2020Observed: 1.49 ft at 3:42AM Sep 28, 2020Observed: 1.47 ft at 3:48AM Sep 28, 2020Observed: 1.45 ft at 3:54AM Sep 28, 2020Observed: 1.42 ft at 4:00AM Sep 28, 2020Observed: 1.39 ft at 4:06AM Sep 28, 2020Observed: 1.36 ft at 4:12AM Sep 28, 2020Observed: 1.34 ft at 4:18AM Sep 28, 2020Observed: 1.33 ft at 4:24AM Sep 28, 2020Observed: 1.31 ft at 4:30AM Sep 28, 2020Observed: 1.29 ft at 4:36AM Sep 28, 2020Observed: 1.28 ft at 4:42AM Sep 28, 2020Observed: 1.26 ft at 4:48AM Sep 28, 2020Observed: 1.25 ft at 4:54AM Sep 28, 2020Observed: 1.23 ft at 5:00AM Sep 28, 2020Observed: 1.22 ft at 5:06AM Sep 28, 2020Observed: 1.21 ft at 5:12AM Sep 28, 2020Observed: 1.2 ft at 5:18AM Sep 28, 2020Observed: 1.19 ft at 5:24AM Sep 28, 2020Observed: 1.18 ft at 5:30AM Sep 28, 2020Observed: 1.17 ft at 5:36AM Sep 28, 2020Observed: 1.18 ft at 5:42AM Sep 28, 2020Observed: 1.17 ft at 5:48AM Sep 28, 2020Observed: 1.16 ft at 5:54AM Sep 28, 2020Observed: 1.15 ft at 6:00AM Sep 28, 2020Observed: 1.14 ft at 6:06AM Sep 28, 2020Observed: 1.14 ft at 6:12AM Sep 28, 2020Observed: 1.15 ft at 6:18AM Sep 28, 2020Observed: 1.16 ft at 6:24AM Sep 28, 2020Observed: 1.16 ft at 6:30AM Sep 28, 2020Observed: 1.16 ft at 6:36AM Sep 28, 2020Observed: 1.17 ft at 6:42AM Sep 28, 2020Observed: 1.18 ft at 6:48AM Sep 28, 2020Observed: 1.19 ft at 6:54AM Sep 28, 2020Observed: 1.21 ft at 7:00AM Sep 28, 2020Observed: 1.23 ft at 7:06AM Sep 28, 2020Observed: 1.25 ft at 7:12AM Sep 28, 2020Observed: 1.27 ft at 7:18AM Sep 28, 2020Observed: 1.28 ft at 7:24AM Sep 28, 2020Observed: 1.29 ft at 7:30AM Sep 28, 2020Observed: 1.32 ft at 7:36AM Sep 28, 2020Observed: 1.35 ft at 7:42AM Sep 28, 2020Observed: 1.38 ft at 7:48AM Sep 28, 2020Observed: 1.41 ft at 7:54AM Sep 28, 2020Observed: 1.44 ft at 8:00AM Sep 28, 2020Forecast: 1.8 ft 9:00AM Sep 28, 2020Forecast: 2.1 ft 10:00AM Sep 28, 2020Forecast: 2.3 ft 11:00AM Sep 28, 2020Forecast: 2.4 ft 12:00PM Sep 28, 2020Forecast: 2.4 ft 1:00PM Sep 28, 2020Forecast: 2.2 ft 2:00PM Sep 28, 2020Forecast: 1.9 ft 3:00PM Sep 28, 2020Forecast: 1.6 ft 4:00PM Sep 28, 2020Forecast: 1.4 ft 5:00PM Sep 28, 2020Forecast: 1.4 ft 6:00PM Sep 28, 2020Forecast: 1.4 ft 7:00PM Sep 28, 2020Forecast: 1.6 ft 8:00PM Sep 28, 2020Forecast: 1.9 ft 9:00PM Sep 28, 2020Forecast: 2.2 ft 10:00PM Sep 28, 2020Forecast: 2.5 ft 11:00PM Sep 28, 2020Forecast: 2.6 ft 12:00AM Sep 29, 2020Forecast: 2.7 ft 1:00AM Sep 29, 2020Forecast: 2.5 ft 2:00AM Sep 29, 2020Forecast: 2.3 ft 3:00AM Sep 29, 2020Forecast: 2.1 ft 4:00AM Sep 29, 2020Forecast: 1.8 ft 5:00AM Sep 29, 2020Forecast: 1.6 ft 6:00AM Sep 29, 2020Forecast: 1.5 ft 7:00AM Sep 29, 2020Forecast: 1.7 ft 8:00AM Sep 29, 2020Forecast: 1.9 ft 9:00AM Sep 29, 2020Forecast: 2.2 ft 10:00AM Sep 29, 2020Forecast: 2.5 ft 11:00AM Sep 29, 2020Forecast: 2.7 ft 12:00PM Sep 29, 2020Forecast: 2.7 ft 1:00PM Sep 29, 2020Forecast: 2.6 ft 2:00PM Sep 29, 2020Forecast: 2.4 ft 3:00PM Sep 29, 2020Forecast: 2.1 ft 4:00PM Sep 29, 2020Forecast: 1.8 ft 5:00PM Sep 29, 2020Forecast: 1.5 ft 6:00PM Sep 29, 2020Forecast: 1.5 ft 7:00PM Sep 29, 2020Forecast: 1.5 ft 8:00PM Sep 29, 2020Forecast: 1.9 ft 9:00PM Sep 29, 2020Forecast: 2.2 ft 10:00PM Sep 29, 2020Forecast: 2.5 ft 11:00PM Sep 29, 2020Forecast: 2.7 ft 12:00AM Sep 30, 2020Highest Forecast: 2.8 ft 1:00AM Sep 30, 2020Forecast: 2.7 ft 2:00AM Sep 30, 2020Forecast: 2.6 ft 3:00AM Sep 30, 2020Forecast: 2.2 ft 4:00AM Sep 30, 2020Forecast: 1.9 ft 5:00AM Sep 30, 2020Forecast: 1.7 ft 6:00AM Sep 30, 2020Forecast: 1.4 ft 7:00AM Sep 30, 2020Forecast: 1.4 ft 8:00AM Sep 30, 2020Forecast: 1.5 ft 9:00AM Sep 30, 2020Forecast: 1.8 ft 10:00AM Sep 30, 2020Forecast: 2.1 ft 11:00AM Sep 30, 2020Forecast: 2.3 ft 12:00PM Sep 30, 2020Forecast: 2.4 ft 1:00PM Sep 30, 2020Forecast: 2.4 ft 2:00PM Sep 30, 2020Forecast: 2.2 ft 3:00PM Sep 30, 2020Forecast: 1.8 ft 4:00PM Sep 30, 2020Forecast: 1.5 ft 5:00PM Sep 30, 2020Forecast: 1.2 ft 6:00PM Sep 30, 2020Forecast: 1 ft 7:00PM Sep 30, 2020Forecast: 0.9 ft 8:00PM Sep 30, 2020Forecast: 1 ft 9:00PM Sep 30, 2020Forecast: 1.4 ft 10:00PM Sep 30, 2020Forecast: 1.7 ft 11:00PM Sep 30, 2020Forecast: 2 ft 12:00AM Oct 01, 2020Forecast: 2.1 ft 1:00AM Oct 01, 2020Forecast: 2.2 ft 2:00AM Oct 01, 2020Forecast: 2.1 ft 3:00AM Oct 01, 2020Forecast: 1.8 ft 4:00AM Oct 01, 2020Forecast: 1.5 ft 5:00AM Oct 01, 2020Forecast: 1.2 ft 6:00AM Oct 01, 2020Forecast: 1 ft 7:00AM Oct 01, 2020Forecast: 0.9 ft 8:00AM Oct 01, 2020National Ocean ServiceLWTV2(plotting HMIRG) Graph Created (8:30AM Sep 28, 2020)ObservedForecast (issued 3:37AM Sep 28)Latest observed value: 1.44 ft at 8:00 AM EDT 28-Sep-2020. Flood Stage is 3 ft
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Tabular Data (UTC)
Tabular Data (EDT)
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Datum: Not Available
Metadata
NOTE: Tide Forecasts are a total water level forecast referenced to mean lower low water.  Please refer to Coastal Flood Advisories and Warnings for official water level forecasts during periods of coastal flooding.  During tropical cyclones, please refer here for additional storm surge information.

NOTE: Please click here for Coastal Flooding Thresholds definitions.

NOTE: Forecasts for the Potomac River at Lewisetta (IN MLLW) are issued routinely year-round.

Vertical Datum references a tidal datum (MLLW)...for more information see Tides and Currents .

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Upstream Gauge - at Alexandria Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 4
Moderate Flood Stage: 3.5
Flood Stage: 3
Action Stage: 2.5
Low Stage (in feet): -1

Historic Crests
(1) 5.76 ft on 09/01/2006
(2) 5.47 ft on 09/18/2003
(3) 4.44 ft on 09/10/2018
(4) 4.38 ft on 10/12/2019 (P)
(5) 4.25 ft on 08/28/2011
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 3.40 ft on 08/18/2020 (P)
(2) 3.00 ft on 08/04/2020 (P)
(3) 3.02 ft on 06/16/2020 (P)
(4) 3.27 ft on 05/20/2020 (P)
(5) 3.61 ft on 04/30/2020 (P)
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) -2.85 ft on 04/05/1975
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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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If you notice any errors in the below information, please contact our Webmaster
4 Severe flooding will cause extensive inundation and flooding of numerous roads and buildings resulting in a significant threat to property and life. Water will be 2 to 3 feet or more above ground level in some areas. Severe flooding will extend inland from the waterfront and shoreline flooding homes, businesses and isolating some neighborhoods. Numerous roads will be impassable under several feet of water and cars submerged. Some areas will need to be evacuated.
3.5 Widespread flooding of vulnerable areas will result in an elevated threat of property damage to homes and businesses near the waterfront and shoreline. Water will be 1 to 2 feet above ground level in some areas resulting in a sufficient depth to close numerous roads and threaten homes and businesses. Flooding will extend inland from the waterfront along tidal rivers and bays resulting in some road closures and flooding of vehicles.
3 Shallow flooding is expected in the most vulnerable locations near the waterfront and shoreline resulting in a low threat of property damage. Expect up to one foot of water above ground level in low lying, vulnerable areas. Some roads and low lying property including parking lots, parks and lawns near the waterfront will experience shallow flooding.
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Latitude: 37.995000° N, Longitude: 76.465000° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 3 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 -0.81 2.19 Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available 3 Older USGS topographic maps, NGVD29 benchmarks
MSL -0.74 2.26 Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  
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Hydromet Outlook
24 Hour Hydrometerological 

Outlook Link to Graphic
Hydro Forecast Discussion
Hydrologist's 

Forecast Discussion
Significant Flood Outlook
Significant River Flood Outlook Link to Graphic
Flash Flood Guidance
Flash Flood 

Guidance Link to Graphic

Additional Water and Weather Topics from the Middle Atlantic River Forecast Center (MARFC):
MARFC Home Page, Current Hazards, Current Conditions James River, Current Conditions Appomattox River,
Water Resources, Observed precipitation, Radar, Tropical Weather, Climate,
Flood History, About the MARFC,
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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
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Page last modified: 1-Mar-2019 12:35 AM
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