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Hydrograph River at a Glance Download
Long Island Sound near New London Harbor (IN MLLW) Tide Height (ft)Observed: 2.87 ft at 4:36PM Aug 13, 2020Observed: 2.88 ft at 4:42PM Aug 13, 2020Observed: 2.91 ft at 4:48PM Aug 13, 2020Observed: 2.92 ft at 4:54PM Aug 13, 2020Observed: 2.97 ft at 5:00PM Aug 13, 2020Observed: 2.98 ft at 5:06PM Aug 13, 2020Observed: 3.01 ft at 5:12PM Aug 13, 2020Observed: 3.04 ft at 5:18PM Aug 13, 2020Observed: 3.06 ft at 5:24PM Aug 13, 2020Observed: 3.06 ft at 5:30PM Aug 13, 2020Observed: 3.1 ft at 5:36PM Aug 13, 2020Observed: 3.11 ft at 5:42PM Aug 13, 2020Observed: 3.12 ft at 5:48PM Aug 13, 2020Observed: 3.1 ft at 5:54PM Aug 13, 2020Observed: 3.1 ft at 6:00PM Aug 13, 2020Observed: 3.08 ft at 6:06PM Aug 13, 2020Observed: 3.08 ft at 6:12PM Aug 13, 2020Observed: 3.08 ft at 6:18PM Aug 13, 2020Observed: 3.1 ft at 6:24PM Aug 13, 2020Observed: 3.11 ft at 6:30PM Aug 13, 2020Observed: 3.1 ft at 6:36PM Aug 13, 2020Observed: 3.07 ft at 6:42PM Aug 13, 2020Observed: 3.02 ft at 6:48PM Aug 13, 2020Observed: 2.97 ft at 6:54PM Aug 13, 2020Observed: 2.92 ft at 7:00PM Aug 13, 2020Observed: 2.88 ft at 7:06PM Aug 13, 2020Observed: 2.85 ft at 7:12PM Aug 13, 2020Observed: 2.82 ft at 7:18PM Aug 13, 2020Observed: 2.77 ft at 7:24PM Aug 13, 2020Observed: 2.71 ft at 7:30PM Aug 13, 2020Observed: 2.67 ft at 7:36PM Aug 13, 2020Observed: 2.64 ft at 7:42PM Aug 13, 2020Observed: 2.6 ft at 7:48PM Aug 13, 2020Observed: 2.52 ft at 8:06PM Aug 13, 2020Observed: 2.5 ft at 8:12PM Aug 13, 2020Observed: 2.43 ft at 8:24PM Aug 13, 2020Observed: 2.39 ft at 8:30PM Aug 13, 2020Observed: 2.33 ft at 8:36PM Aug 13, 2020Observed: 2.26 ft at 8:42PM Aug 13, 2020Observed: 2.2 ft at 8:48PM Aug 13, 2020Observed: 2.16 ft at 8:54PM Aug 13, 2020Observed: 2.11 ft at 9:00PM Aug 13, 2020Observed: 2.07 ft at 9:06PM Aug 13, 2020Observed: 2.03 ft at 9:12PM Aug 13, 2020Observed: 1.99 ft at 9:18PM Aug 13, 2020Observed: 1.94 ft at 9:24PM Aug 13, 2020Observed: 1.9 ft at 9:30PM Aug 13, 2020Observed: 1.87 ft at 9:36PM Aug 13, 2020Observed: 1.81 ft at 9:42PM Aug 13, 2020Observed: 1.77 ft at 9:48PM Aug 13, 2020Observed: 1.71 ft at 9:54PM Aug 13, 2020Observed: 1.68 ft at 10:00PM Aug 13, 2020Observed: 1.64 ft at 10:06PM Aug 13, 2020Observed: 1.58 ft at 10:12PM Aug 13, 2020Observed: 1.52 ft at 10:18PM Aug 13, 2020Observed: 1.47 ft at 10:24PM Aug 13, 2020Observed: 1.39 ft at 10:30PM Aug 13, 2020Observed: 1.34 ft at 10:36PM Aug 13, 2020Observed: 1.28 ft at 10:42PM Aug 13, 2020Observed: 1.22 ft at 10:48PM Aug 13, 2020Observed: 1.18 ft at 10:54PM Aug 13, 2020Observed: 1.16 ft at 11:00PM Aug 13, 2020Observed: 1.12 ft at 11:06PM Aug 13, 2020Observed: 1.08 ft at 11:12PM Aug 13, 2020Observed: 1.05 ft at 11:18PM Aug 13, 2020Observed: 1.02 ft at 11:24PM Aug 13, 2020Observed: 0.99 ft at 11:30PM Aug 13, 2020Observed: 0.95 ft at 11:36PM Aug 13, 2020Observed: 0.93 ft at 11:42PM Aug 13, 2020Observed: 0.91 ft at 11:48PM Aug 13, 2020Observed: 0.86 ft at 11:54PM Aug 13, 2020Observed: 0.83 ft at 12:00AM Aug 14, 2020Observed: 0.79 ft at 12:06AM Aug 14, 2020Observed: 0.77 ft at 12:12AM Aug 14, 2020Observed: 0.76 ft at 12:18AM Aug 14, 2020Observed: 0.74 ft at 12:24AM Aug 14, 2020Observed: 0.73 ft at 12:30AM Aug 14, 2020Observed: 0.74 ft at 12:36AM Aug 14, 2020Observed: 0.75 ft at 12:42AM Aug 14, 2020Observed: 0.76 ft at 12:48AM Aug 14, 2020Observed: 0.77 ft at 12:54AM Aug 14, 2020Observed: 0.78 ft at 1:00AM Aug 14, 2020Observed: 0.8 ft at 1:06AM Aug 14, 2020Observed: 0.83 ft at 1:12AM Aug 14, 2020Observed: 0.85 ft at 1:18AM Aug 14, 2020Observed: 0.87 ft at 1:24AM Aug 14, 2020Observed: 0.9 ft at 1:30AM Aug 14, 2020Observed: 0.94 ft at 1:36AM Aug 14, 2020Observed: 0.97 ft at 1:42AM Aug 14, 2020Observed: 1.02 ft at 1:48AM Aug 14, 2020Observed: 1.08 ft at 1:54AM Aug 14, 2020Observed: 1.11 ft at 2:00AM Aug 14, 2020Observed: 1.16 ft at 2:06AM Aug 14, 2020Observed: 1.21 ft at 2:12AM Aug 14, 2020Observed: 1.25 ft at 2:18AM Aug 14, 2020Observed: 1.3 ft at 2:24AM Aug 14, 2020Observed: 1.35 ft at 2:30AM Aug 14, 2020Observed: 1.39 ft at 2:36AM Aug 14, 2020Observed: 1.44 ft at 2:42AM Aug 14, 2020Observed: 1.49 ft at 2:48AM Aug 14, 2020Observed: 1.56 ft at 2:54AM Aug 14, 2020Observed: 1.6 ft at 3:00AM Aug 14, 2020Observed: 1.66 ft at 3:06AM Aug 14, 2020Observed: 1.7 ft at 3:12AM Aug 14, 2020Observed: 1.75 ft at 3:18AM Aug 14, 2020Observed: 1.8 ft at 3:24AM Aug 14, 2020Observed: 1.84 ft at 3:30AM Aug 14, 2020Observed: 1.89 ft at 3:36AM Aug 14, 2020Observed: 1.95 ft at 3:42AM Aug 14, 2020Observed: 1.98 ft at 3:48AM Aug 14, 2020Observed: 2.02 ft at 3:54AM Aug 14, 2020Observed: 2.06 ft at 4:00AM Aug 14, 2020Observed: 2.09 ft at 4:06AM Aug 14, 2020Observed: 2.12 ft at 4:12AM Aug 14, 2020Observed: 2.17 ft at 4:18AM Aug 14, 2020Observed: 2.19 ft at 4:24AM Aug 14, 2020Observed: 2.22 ft at 4:30AM Aug 14, 2020Observed: 2.27 ft at 4:36AM Aug 14, 2020Observed: 2.31 ft at 4:42AM Aug 14, 2020Observed: 2.34 ft at 4:48AM Aug 14, 2020Observed: 2.34 ft at 4:54AM Aug 14, 2020Observed: 2.34 ft at 5:00AM Aug 14, 2020Observed: 2.35 ft at 5:06AM Aug 14, 2020Observed: 2.36 ft at 5:12AM Aug 14, 2020Observed: 2.37 ft at 5:18AM Aug 14, 2020Observed: 2.38 ft at 5:24AM Aug 14, 2020Observed: 2.39 ft at 5:30AM Aug 14, 2020Observed: 2.41 ft at 5:36AM Aug 14, 2020Observed: 2.43 ft at 5:42AM Aug 14, 2020Observed: 2.44 ft at 5:48AM Aug 14, 2020Observed: 2.46 ft at 5:54AM Aug 14, 2020Observed: 2.47 ft at 6:00AM Aug 14, 2020Observed: 2.47 ft at 6:06AM Aug 14, 2020Observed: 2.49 ft at 6:12AM Aug 14, 2020Observed: 2.49 ft at 6:18AM Aug 14, 2020Observed: 2.51 ft at 6:24AM Aug 14, 2020Observed: 2.49 ft at 6:30AM Aug 14, 2020Observed: 2.46 ft at 6:36AM Aug 14, 2020Observed: 2.46 ft at 6:42AM Aug 14, 2020Observed: 2.42 ft at 6:48AM Aug 14, 2020Observed: 2.41 ft at 6:54AM Aug 14, 2020Observed: 2.4 ft at 7:00AM Aug 14, 2020Observed: 2.38 ft at 7:06AM Aug 14, 2020Observed: 2.36 ft at 7:12AM Aug 14, 2020Observed: 2.35 ft at 7:18AM Aug 14, 2020Observed: 2.34 ft at 7:24AM Aug 14, 2020Observed: 2.33 ft at 7:30AM Aug 14, 2020Observed: 2.32 ft at 7:36AM Aug 14, 2020Observed: 2.29 ft at 7:42AM Aug 14, 2020Observed: 2.25 ft at 7:48AM Aug 14, 2020Observed: 2.21 ft at 7:54AM Aug 14, 2020Observed: 2.18 ft at 8:00AM Aug 14, 2020Observed: 2.16 ft at 8:06AM Aug 14, 2020Observed: 2.14 ft at 8:12AM Aug 14, 2020Observed: 2.1 ft at 8:18AM Aug 14, 2020Observed: 2.07 ft at 8:24AM Aug 14, 2020Observed: 2.04 ft at 8:30AM Aug 14, 2020Observed: 2.01 ft at 8:36AM Aug 14, 2020Observed: 2.01 ft at 8:42AM Aug 14, 2020Observed: 1.98 ft at 8:54AM Aug 14, 2020Observed: 1.94 ft at 9:00AM Aug 14, 2020Observed: 1.94 ft at 9:06AM Aug 14, 2020Observed: 1.91 ft at 9:12AM Aug 14, 2020Observed: 1.9 ft at 9:18AM Aug 14, 2020Observed: 1.87 ft at 9:24AM Aug 14, 2020Observed: 1.85 ft at 9:30AM Aug 14, 2020Observed: 1.83 ft at 9:36AM Aug 14, 2020Observed: 1.81 ft at 9:42AM Aug 14, 2020Observed: 1.79 ft at 9:48AM Aug 14, 2020Observed: 1.76 ft at 9:54AM Aug 14, 2020Observed: 1.71 ft at 10:00AM Aug 14, 2020Observed: 1.67 ft at 10:06AM Aug 14, 2020Observed: 1.63 ft at 10:12AM Aug 14, 2020Observed: 1.59 ft at 10:18AM Aug 14, 2020Observed: 1.56 ft at 10:24AM Aug 14, 2020Observed: 1.53 ft at 10:30AM Aug 14, 2020Observed: 1.53 ft at 10:36AM Aug 14, 2020Observed: 1.52 ft at 10:42AM Aug 14, 2020Observed: 1.51 ft at 10:48AM Aug 14, 2020Observed: 1.48 ft at 10:54AM Aug 14, 2020Observed: 1.43 ft at 11:00AM Aug 14, 2020Observed: 1.41 ft at 11:06AM Aug 14, 2020Observed: 1.36 ft at 11:12AM Aug 14, 2020Observed: 1.32 ft at 11:18AM Aug 14, 2020Observed: 1.28 ft at 11:24AM Aug 14, 2020Observed: 1.26 ft at 11:30AM Aug 14, 2020Observed: 1.22 ft at 11:36AM Aug 14, 2020Observed: 1.2 ft at 11:42AM Aug 14, 2020Observed: 1.2 ft at 11:48AM Aug 14, 2020Observed: 1.18 ft at 11:54AM Aug 14, 2020Observed: 1.18 ft at 12:00PM Aug 14, 2020Observed: 1.19 ft at 12:06PM Aug 14, 2020Observed: 1.16 ft at 12:12PM Aug 14, 2020Observed: 1.17 ft at 12:18PM Aug 14, 2020Observed: 1.19 ft at 12:24PM Aug 14, 2020Observed: 1.21 ft at 12:30PM Aug 14, 2020Observed: 1.23 ft at 12:36PM Aug 14, 2020Observed: 1.22 ft at 12:42PM Aug 14, 2020Observed: 1.25 ft at 12:48PM Aug 14, 2020Observed: 1.26 ft at 12:54PM Aug 14, 2020Observed: 1.28 ft at 1:00PM Aug 14, 2020Observed: 1.26 ft at 1:06PM Aug 14, 2020Observed: 1.3 ft at 1:12PM Aug 14, 2020Observed: 1.32 ft at 1:18PM Aug 14, 2020Observed: 1.33 ft at 1:24PM Aug 14, 2020Observed: 1.37 ft at 1:30PM Aug 14, 2020Observed: 1.43 ft at 1:36PM Aug 14, 2020Observed: 1.47 ft at 1:42PM Aug 14, 2020Observed: 1.58 ft at 1:54PM Aug 14, 2020Observed: 1.62 ft at 2:00PM Aug 14, 2020Observed: 1.67 ft at 2:06PM Aug 14, 2020Observed: 1.73 ft at 2:12PM Aug 14, 2020Observed: 1.76 ft at 2:18PM Aug 14, 2020Observed: 1.81 ft at 2:24PM Aug 14, 2020Observed: 1.85 ft at 2:30PM Aug 14, 2020Observed: 1.9 ft at 2:36PM Aug 14, 2020Observed: 1.95 ft at 2:42PM Aug 14, 2020Observed: 2.01 ft at 2:48PM Aug 14, 2020Observed: 2.04 ft at 2:54PM Aug 14, 2020Observed: 2.1 ft at 3:00PM Aug 14, 2020Observed: 2.13 ft at 3:06PM Aug 14, 2020Observed: 2.18 ft at 3:12PM Aug 14, 2020Observed: 2.24 ft at 3:18PM Aug 14, 2020Observed: 2.31 ft at 3:24PM Aug 14, 2020Observed: 2.34 ft at 3:30PM Aug 14, 2020Observed: 2.4 ft at 3:36PM Aug 14, 2020Observed: 2.44 ft at 3:42PM Aug 14, 2020Observed: 2.5 ft at 3:48PM Aug 14, 2020Observed: 2.54 ft at 3:54PM Aug 14, 2020Observed: 2.59 ft at 4:00PM Aug 14, 2020Observed: 2.63 ft at 4:06PM Aug 14, 2020Observed: 2.69 ft at 4:12PM Aug 14, 2020Observed: 2.73 ft at 4:18PM Aug 14, 2020Observed: 2.75 ft at 4:24PM Aug 14, 2020Observed: 2.8 ft at 4:30PM Aug 14, 2020Observed: 2.84 ft at 4:36PM Aug 14, 2020Observed: 2.87 ft at 4:42PM Aug 14, 2020Observed: 2.92 ft at 4:48PM Aug 14, 2020Observed: 2.95 ft at 4:54PM Aug 14, 2020Observed: 2.98 ft at 5:00PM Aug 14, 2020Observed: 3.04 ft at 5:06PM Aug 14, 2020Observed: 3.07 ft at 5:12PM Aug 14, 2020Observed: 3.1 ft at 5:18PM Aug 14, 2020Observed: 3.14 ft at 5:24PM Aug 14, 2020Observed: 3.17 ft at 5:30PM Aug 14, 2020Observed: 3.19 ft at 5:36PM Aug 14, 2020Observed: 3.21 ft at 5:42PM Aug 14, 2020Observed: 3.23 ft at 5:48PM Aug 14, 2020Observed: 3.28 ft at 5:54PM Aug 14, 2020Observed: 3.31 ft at 6:00PM Aug 14, 2020Observed: 3.34 ft at 6:06PM Aug 14, 2020Observed: 3.38 ft at 6:12PM Aug 14, 2020Observed: 3.4 ft at 6:18PM Aug 14, 2020Observed: 3.4 ft at 6:24PM Aug 14, 2020Observed: 3.43 ft at 6:30PM Aug 14, 2020Observed: 3.44 ft at 6:36PM Aug 14, 2020Observed: 3.43 ft at 6:42PM Aug 14, 2020Highest Observation: 3.45 ft at 6:48PM Aug 14, 2020Observed: 3.44 ft at 6:54PM Aug 14, 2020Observed: 3.44 ft at 7:00PM Aug 14, 2020Observed: 3.4 ft at 7:06PM Aug 14, 2020Observed: 3.37 ft at 7:12PM Aug 14, 2020Observed: 3.37 ft at 7:18PM Aug 14, 2020Observed: 3.32 ft at 7:24PM Aug 14, 2020Observed: 3.29 ft at 7:30PM Aug 14, 2020Observed: 3.27 ft at 7:36PM Aug 14, 2020Observed: 3.24 ft at 7:42PM Aug 14, 2020Observed: 3.22 ft at 7:48PM Aug 14, 2020Observed: 3.14 ft at 8:06PM Aug 14, 2020Observed: 3.11 ft at 8:12PM Aug 14, 2020Observed: 3.05 ft at 8:18PM Aug 14, 2020Observed: 2.99 ft at 8:24PM Aug 14, 2020Observed: 2.93 ft at 8:30PM Aug 14, 2020Observed: 2.87 ft at 8:36PM Aug 14, 2020Observed: 2.81 ft at 8:42PM Aug 14, 2020Observed: 2.76 ft at 8:48PM Aug 14, 2020Observed: 2.71 ft at 8:54PM Aug 14, 2020Observed: 2.68 ft at 9:00PM Aug 14, 2020Observed: 2.64 ft at 9:06PM Aug 14, 2020Observed: 2.61 ft at 9:12PM Aug 14, 2020Observed: 2.58 ft at 9:18PM Aug 14, 2020Observed: 2.54 ft at 9:24PM Aug 14, 2020Observed: 2.49 ft at 9:30PM Aug 14, 2020Observed: 2.46 ft at 9:36PM Aug 14, 2020Observed: 2.43 ft at 9:42PM Aug 14, 2020Observed: 2.4 ft at 9:48PM Aug 14, 2020Observed: 2.35 ft at 9:54PM Aug 14, 2020Observed: 2.29 ft at 10:00PM Aug 14, 2020Observed: 2.24 ft at 10:06PM Aug 14, 2020Observed: 2.18 ft at 10:12PM Aug 14, 2020Observed: 2.1 ft at 10:18PM Aug 14, 2020Observed: 2.04 ft at 10:24PM Aug 14, 2020Observed: 1.97 ft at 10:30PM Aug 14, 2020Observed: 1.91 ft at 10:36PM Aug 14, 2020Observed: 1.86 ft at 10:42PM Aug 14, 2020Observed: 1.82 ft at 10:48PM Aug 14, 2020Observed: 1.76 ft at 10:54PM Aug 14, 2020Observed: 1.73 ft at 11:00PM Aug 14, 2020Observed: 1.68 ft at 11:06PM Aug 14, 2020Observed: 1.62 ft at 11:12PM Aug 14, 2020Observed: 1.55 ft at 11:18PM Aug 14, 2020Observed: 1.51 ft at 11:24PM Aug 14, 2020Observed: 1.45 ft at 11:30PM Aug 14, 2020Observed: 1.39 ft at 11:36PM Aug 14, 2020Observed: 1.35 ft at 11:42PM Aug 14, 2020Observed: 1.3 ft at 11:48PM Aug 14, 2020Observed: 1.24 ft at 11:54PM Aug 14, 2020Observed: 1.17 ft at 12:00AM Aug 15, 2020Observed: 1.13 ft at 12:06AM Aug 15, 2020Observed: 1.09 ft at 12:12AM Aug 15, 2020Observed: 1.06 ft at 12:18AM Aug 15, 2020Observed: 1 ft at 12:24AM Aug 15, 2020Observed: 0.99 ft at 12:30AM Aug 15, 2020Observed: 0.96 ft at 12:36AM Aug 15, 2020Observed: 0.93 ft at 12:42AM Aug 15, 2020Observed: 0.92 ft at 12:48AM Aug 15, 2020Observed: 0.91 ft at 12:54AM Aug 15, 2020Observed: 0.91 ft at 1:00AM Aug 15, 2020Observed: 0.87 ft at 1:06AM Aug 15, 2020Observed: 0.88 ft at 1:12AM Aug 15, 2020Observed: 0.88 ft at 1:18AM Aug 15, 2020Observed: 0.88 ft at 1:24AM Aug 15, 2020Observed: 0.88 ft at 1:30AM Aug 15, 2020Observed: 0.89 ft at 1:36AM Aug 15, 2020Observed: 0.91 ft at 1:42AM Aug 15, 2020Observed: 0.92 ft at 1:48AM Aug 15, 2020Observed: 0.95 ft at 1:54AM Aug 15, 2020Observed: 0.98 ft at 2:00AM Aug 15, 2020Observed: 1 ft at 2:06AM Aug 15, 2020Observed: 1.02 ft at 2:12AM Aug 15, 2020Observed: 1.04 ft at 2:18AM Aug 15, 2020Observed: 1.09 ft at 2:24AM Aug 15, 2020Observed: 1.15 ft at 2:30AM Aug 15, 2020Observed: 1.2 ft at 2:36AM Aug 15, 2020Observed: 1.22 ft at 2:42AM Aug 15, 2020Observed: 1.27 ft at 2:48AM Aug 15, 2020Observed: 1.32 ft at 2:54AM Aug 15, 2020Observed: 1.36 ft at 3:00AM Aug 15, 2020Observed: 1.41 ft at 3:06AM Aug 15, 2020Observed: 1.48 ft at 3:12AM Aug 15, 2020Observed: 1.55 ft at 3:18AM Aug 15, 2020Observed: 1.59 ft at 3:24AM Aug 15, 2020Observed: 1.65 ft at 3:30AM Aug 15, 2020Observed: 1.72 ft at 3:36AM Aug 15, 2020Observed: 1.79 ft at 3:42AM Aug 15, 2020Observed: 1.84 ft at 3:48AM Aug 15, 2020Observed: 1.88 ft at 3:54AM Aug 15, 2020Observed: 1.91 ft at 4:00AM Aug 15, 2020Observed: 1.95 ft at 4:06AM Aug 15, 2020Observed: 1.98 ft at 4:12AM Aug 15, 2020Observed: 2 ft at 4:18AM Aug 15, 2020Observed: 2.03 ft at 4:24AM Aug 15, 2020Observed: 2.1 ft at 4:30AM Aug 15, 2020Observed: 2.12 ft at 4:36AM Aug 15, 2020Observed: 2.16 ft at 4:42AM Aug 15, 2020Observed: 2.19 ft at 4:48AM Aug 15, 2020Observed: 2.23 ft at 4:54AM Aug 15, 2020Observed: 2.29 ft at 5:00AM Aug 15, 2020Observed: 2.33 ft at 5:06AM Aug 15, 2020Observed: 2.38 ft at 5:12AM Aug 15, 2020Observed: 2.42 ft at 5:18AM Aug 15, 2020Observed: 2.44 ft at 5:24AM Aug 15, 2020Observed: 2.46 ft at 5:30AM Aug 15, 2020Observed: 2.51 ft at 5:36AM Aug 15, 2020Observed: 2.53 ft at 5:42AM Aug 15, 2020Observed: 2.53 ft at 5:48AM Aug 15, 2020Observed: 2.54 ft at 5:54AM Aug 15, 2020Observed: 2.55 ft at 6:00AM Aug 15, 2020Observed: 2.57 ft at 6:06AM Aug 15, 2020Observed: 2.57 ft at 6:12AM Aug 15, 2020Observed: 2.57 ft at 6:18AM Aug 15, 2020Observed: 2.6 ft at 6:24AM Aug 15, 2020Observed: 2.62 ft at 6:30AM Aug 15, 2020Observed: 2.65 ft at 6:36AM Aug 15, 2020Observed: 2.7 ft at 6:42AM Aug 15, 2020Observed: 2.72 ft at 6:48AM Aug 15, 2020Observed: 2.72 ft at 6:54AM Aug 15, 2020Observed: 2.73 ft at 7:00AM Aug 15, 2020Observed: 2.74 ft at 7:06AM Aug 15, 2020Observed: 2.75 ft at 7:12AM Aug 15, 2020Observed: 2.75 ft at 7:18AM Aug 15, 2020Observed: 2.73 ft at 7:24AM Aug 15, 2020Observed: 2.73 ft at 7:30AM Aug 15, 2020Observed: 2.72 ft at 7:36AM Aug 15, 2020Observed: 2.73 ft at 7:42AM Aug 15, 2020Observed: 2.74 ft at 7:48AM Aug 15, 2020Observed: 2.74 ft at 7:54AM Aug 15, 2020Observed: 2.74 ft at 8:00AM Aug 15, 2020Observed: 2.73 ft at 8:06AM Aug 15, 2020Observed: 2.71 ft at 8:12AM Aug 15, 2020Observed: 2.7 ft at 8:18AM Aug 15, 2020Observed: 2.7 ft at 8:24AM Aug 15, 2020Observed: 2.69 ft at 8:30AM Aug 15, 2020Observed: 2.65 ft at 8:36AM Aug 15, 2020Observed: 2.62 ft at 8:42AM Aug 15, 2020Observed: 2.6 ft at 8:48AM Aug 15, 2020Observed: 2.59 ft at 8:54AM Aug 15, 2020Observed: 2.58 ft at 9:00AM Aug 15, 2020Observed: 2.55 ft at 9:06AM Aug 15, 2020Observed: 2.52 ft at 9:12AM Aug 15, 2020Observed: 2.47 ft at 9:18AM Aug 15, 2020Observed: 2.44 ft at 9:24AM Aug 15, 2020Observed: 2.4 ft at 9:30AM Aug 15, 2020Observed: 2.4 ft at 9:36AM Aug 15, 2020Observed: 2.35 ft at 9:42AM Aug 15, 2020Observed: 2.32 ft at 9:48AM Aug 15, 2020Observed: 2.28 ft at 9:54AM Aug 15, 2020Observed: 2.21 ft at 10:00AM Aug 15, 2020Observed: 2.15 ft at 10:06AM Aug 15, 2020Observed: 2.11 ft at 10:12AM Aug 15, 2020Observed: 2.04 ft at 10:18AM Aug 15, 2020Observed: 1.97 ft at 10:24AM Aug 15, 2020Observed: 1.91 ft at 10:30AM Aug 15, 2020Observed: 1.87 ft at 10:36AM Aug 15, 2020Observed: 1.84 ft at 10:42AM Aug 15, 2020Observed: 1.81 ft at 10:48AM Aug 15, 2020Observed: 1.79 ft at 10:54AM Aug 15, 2020Observed: 1.77 ft at 11:00AM Aug 15, 2020Observed: 1.71 ft at 11:06AM Aug 15, 2020Observed: 1.63 ft at 11:12AM Aug 15, 2020Observed: 1.59 ft at 11:18AM Aug 15, 2020Observed: 1.56 ft at 11:24AM Aug 15, 2020Observed: 1.51 ft at 11:30AM Aug 15, 2020Observed: 1.5 ft at 11:36AM Aug 15, 2020Observed: 1.46 ft at 11:42AM Aug 15, 2020Observed: 1.44 ft at 11:48AM Aug 15, 2020Observed: 1.42 ft at 11:54AM Aug 15, 2020Observed: 1.39 ft at 12:00PM Aug 15, 2020Observed: 1.38 ft at 12:06PM Aug 15, 2020Observed: 1.36 ft at 12:12PM Aug 15, 2020Observed: 1.35 ft at 12:18PM Aug 15, 2020Observed: 1.32 ft at 12:24PM Aug 15, 2020Observed: 1.32 ft at 12:30PM Aug 15, 2020Observed: 1.31 ft at 12:36PM Aug 15, 2020Observed: 1.31 ft at 12:42PM Aug 15, 2020Observed: 1.33 ft at 12:48PM Aug 15, 2020Observed: 1.32 ft at 12:54PM Aug 15, 2020Observed: 1.31 ft at 1:00PM Aug 15, 2020Observed: 1.29 ft at 1:06PM Aug 15, 2020Observed: 1.29 ft at 1:12PM Aug 15, 2020Observed: 1.26 ft at 1:18PM Aug 15, 2020Observed: 1.26 ft at 1:24PM Aug 15, 2020Observed: 1.28 ft at 1:30PM Aug 15, 2020Observed: 1.3 ft at 1:36PM Aug 15, 2020Observed: 1.32 ft at 1:42PM Aug 15, 2020Observed: 1.31 ft at 1:48PM Aug 15, 2020Observed: 1.3 ft at 1:54PM Aug 15, 2020Observed: 1.33 ft at 2:00PM Aug 15, 2020Observed: 1.35 ft at 2:06PM Aug 15, 2020Observed: 1.37 ft at 2:12PM Aug 15, 2020Observed: 1.41 ft at 2:18PM Aug 15, 2020Observed: 1.45 ft at 2:24PM Aug 15, 2020Observed: 1.5 ft at 2:30PM Aug 15, 2020Observed: 1.56 ft at 2:36PM Aug 15, 2020Observed: 1.63 ft at 2:42PM Aug 15, 2020Observed: 1.67 ft at 2:48PM Aug 15, 2020Observed: 1.74 ft at 2:54PM Aug 15, 2020Observed: 1.78 ft at 3:00PM Aug 15, 2020Observed: 1.83 ft at 3:06PM Aug 15, 2020Observed: 1.89 ft at 3:12PM Aug 15, 2020Observed: 1.93 ft at 3:18PM Aug 15, 2020Observed: 1.99 ft at 3:24PM Aug 15, 2020Observed: 2.04 ft at 3:30PM Aug 15, 2020Observed: 2.08 ft at 3:36PM Aug 15, 2020Observed: 2.15 ft at 3:42PM Aug 15, 2020Observed: 2.24 ft at 3:48PM Aug 15, 2020Observed: 2.33 ft at 3:54PM Aug 15, 2020Observed: 2.4 ft at 4:00PM Aug 15, 2020Observed: 2.46 ft at 4:06PM Aug 15, 2020Observed: 2.55 ft at 4:12PM Aug 15, 2020Forecast: 3 ft 5:00PM Aug 15, 2020Forecast: 3.4 ft 6:00PM Aug 15, 2020Forecast: 3.6 ft 7:00PM Aug 15, 2020Forecast: 3.7 ft 8:00PM Aug 15, 2020Forecast: 3.4 ft 9:00PM Aug 15, 2020Forecast: 2.9 ft 10:00PM Aug 15, 2020Forecast: 2.3 ft 11:00PM Aug 15, 2020Forecast: 1.7 ft 12:00AM Aug 16, 2020Forecast: 1.2 ft 1:00AM Aug 16, 2020Forecast: 0.8 ft 2:00AM Aug 16, 2020Forecast: 0.9 ft 3:00AM Aug 16, 2020Forecast: 1.3 ft 4:00AM Aug 16, 2020Forecast: 1.9 ft 5:00AM Aug 16, 2020Forecast: 2.4 ft 6:00AM Aug 16, 2020Forecast: 2.7 ft 7:00AM Aug 16, 2020Forecast: 2.8 ft 8:00AM Aug 16, 2020Forecast: 2.7 ft 9:00AM Aug 16, 2020Forecast: 2.4 ft 10:00AM Aug 16, 2020Forecast: 2 ft 11:00AM Aug 16, 2020Forecast: 1.7 ft 12:00PM Aug 16, 2020Forecast: 1.3 ft 1:00PM Aug 16, 2020Forecast: 1.2 ft 2:00PM Aug 16, 2020Forecast: 1.4 ft 3:00PM Aug 16, 2020Forecast: 2 ft 4:00PM Aug 16, 2020Forecast: 2.6 ft 5:00PM Aug 16, 2020Forecast: 3.3 ft 6:00PM Aug 16, 2020Forecast: 3.7 ft 7:00PM Aug 16, 2020Forecast: 3.9 ft 8:00PM Aug 16, 2020Highest Forecast: 4 ft 9:00PM Aug 16, 2020Forecast: 3.6 ft 10:00PM Aug 16, 2020Forecast: 3.1 ft 11:00PM Aug 16, 2020Forecast: 2.4 ft 12:00AM Aug 17, 2020Forecast: 1.8 ft 1:00AM Aug 17, 2020Forecast: 1.2 ft 2:00AM Aug 17, 2020Forecast: 1 ft 3:00AM Aug 17, 2020Forecast: 1.3 ft 4:00AM Aug 17, 2020Forecast: 1.8 ft 5:00AM Aug 17, 2020Forecast: 2.4 ft 6:00AM Aug 17, 2020Forecast: 2.9 ft 7:00AM Aug 17, 2020Forecast: 3.2 ft 8:00AM Aug 17, 2020Forecast: 3.2 ft 9:00AM Aug 17, 2020Forecast: 2.9 ft 10:00AM Aug 17, 2020Forecast: 2.5 ft 11:00AM Aug 17, 2020Forecast: 2 ft 12:00PM Aug 17, 2020Forecast: 1.5 ft 1:00PM Aug 17, 2020Forecast: 1.1 ft 2:00PM Aug 17, 2020Forecast: 1 ft 3:00PM Aug 17, 2020Forecast: 1.2 ft 4:00PM Aug 17, 2020Forecast: 1.8 ft 5:00PM Aug 17, 2020Forecast: 2.6 ft 6:00PM Aug 17, 2020Forecast: 3.2 ft 7:00PM Aug 17, 2020Forecast: 3.7 ft 8:00PM Aug 17, 2020Forecast: 3.9 ft 9:00PM Aug 17, 2020Forecast: 3.7 ft 10:00PM Aug 17, 2020Forecast: 3.1 ft 11:00PM Aug 17, 2020Forecast: 2.3 ft 12:00AM Aug 18, 2020Forecast: 1.6 ft 1:00AM Aug 18, 2020Forecast: 0.9 ft 2:00AM Aug 18, 2020Forecast: 0.5 ft 3:00AM Aug 18, 2020NOAA National Ocean ServiceNLNC3(plotting HMIRP) Graph Created (4:31PM Aug 15, 2020)ObservedForecast (issued 4:18AM Aug 15)Latest observed value: 2.55 ft at 4:12 PM EDT 15-Aug-2020. Flood Stage is 5 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. Click here for Flood Category definitions.

Reliability of the Forecast: Forecast data shown here are guidance values only. Please refer to your local NWS office.

NOTE: Forecasts for the Long Island Sound near New London Harbor (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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Flood Categories (in feet)
Major Flood Stage: 7.8
Moderate Flood Stage: 6
Flood Stage: 5
Action Stage: 0
Low Stage (in feet): -9999

Historic Crests
(1) 10.58 ft on 09/21/1938
(2) 9.58 ft on 08/31/1954
(3) 8.04 ft on 10/29/2012
(4) 7.58 ft on 11/25/1950
(5) 7.08 ft on 09/14/1944

(P): Preliminary values subject to further review.

Recent Crests
(1) 8.04 ft on 10/29/2012
(2) 9.58 ft on 08/31/1954
(3) 7.58 ft on 11/25/1950
(4) 7.08 ft on 09/14/1944
(5) 10.58 ft on 09/21/1938

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

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

Zoom Level:16
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Gauge LocationGauge Map Marker
Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
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If you notice any errors in the below information, please contact our Webmaster
8 Along low lying portions of the Long Island Sound, two to three feet of inundation is possible a few blocks inland with one to two feet of inundation possible north of I-95 in several low spots around waterways such as the Niantic River in Niantic, the Mystic River in Mystic. Nearly fifteen miles inland along the Connecticut and Thames Rivers, inundation is also possible with major damage in regions such as West End Drive and Seaside Lane in Old Lyme.
6.5 Inundation of one to two feet of water occurs on streets and several properties in Saybrook Point, as well as in the Marina where several feet of water is possible, as water reaches over the seawall.
6 Coastal flooding causes Niantic River Road to close between 1st and 2nd Avenue.
5 Flooding occurs in the downtown Mystic area directly along the waterfront, primarily in the street on Gravel Street and River Road. Groton experiences minor shoreline flooding.
Photos
(1) Tidal Gage at New London, CT
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Latitude: 41.361000° N, Longitude: 72.090000° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 5 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 -1.84 3.16 Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available 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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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
National Weather Service
Upton Weather Forecast Office
175 Brookhaven Ave. Bldg. NWS-1
Upton, NY 11973
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Page last modified: 1-Mar-2019 12:35 AM
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