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Hydrograph River at a Glance Download
Long Island Sound near New London Harbor (IN MLLW) Tide Height (ft)Observed: 1.18 ft at 4:48PM Apr 26, 2024Observed: 1.14 ft at 4:54PM Apr 26, 2024Observed: 1.1 ft at 5:00PM Apr 26, 2024Observed: 1.05 ft at 5:06PM Apr 26, 2024Observed: 1.02 ft at 5:12PM Apr 26, 2024Observed: 0.99 ft at 5:18PM Apr 26, 2024Observed: 0.99 ft at 5:24PM Apr 26, 2024Observed: 0.96 ft at 5:30PM Apr 26, 2024Observed: 0.95 ft at 5:36PM Apr 26, 2024Observed: 0.95 ft at 5:42PM Apr 26, 2024Observed: 0.93 ft at 5:48PM Apr 26, 2024Observed: 0.93 ft at 5:54PM Apr 26, 2024Observed: 0.94 ft at 6:00PM Apr 26, 2024Observed: 0.95 ft at 6:06PM Apr 26, 2024Observed: 0.93 ft at 6:12PM Apr 26, 2024Observed: 0.93 ft at 6:18PM Apr 26, 2024Observed: 0.93 ft at 6:24PM Apr 26, 2024Observed: 0.94 ft at 6:30PM Apr 26, 2024Observed: 0.95 ft at 6:36PM Apr 26, 2024Observed: 0.97 ft at 6:42PM Apr 26, 2024Observed: 0.99 ft at 6:48PM Apr 26, 2024Observed: 1.03 ft at 6:54PM Apr 26, 2024Observed: 1.07 ft at 7:00PM Apr 26, 2024Observed: 1.12 ft at 7:06PM Apr 26, 2024Observed: 1.17 ft at 7:12PM Apr 26, 2024Observed: 1.23 ft at 7:18PM Apr 26, 2024Observed: 1.27 ft at 7:24PM Apr 26, 2024Observed: 1.32 ft at 7:30PM Apr 26, 2024Observed: 1.39 ft at 7:36PM Apr 26, 2024Observed: 1.44 ft at 7:42PM Apr 26, 2024Observed: 1.5 ft at 7:48PM Apr 26, 2024Observed: 1.6 ft at 8:00PM Apr 26, 2024Observed: 1.65 ft at 8:06PM Apr 26, 2024Observed: 1.7 ft at 8:12PM Apr 26, 2024Observed: 1.74 ft at 8:18PM Apr 26, 2024Observed: 1.79 ft at 8:24PM Apr 26, 2024Observed: 1.91 ft at 8:36PM Apr 26, 2024Observed: 1.99 ft at 8:42PM Apr 26, 2024Observed: 2.05 ft at 8:48PM Apr 26, 2024Observed: 2.13 ft at 8:54PM Apr 26, 2024Observed: 2.19 ft at 9:00PM Apr 26, 2024Observed: 2.27 ft at 9:06PM Apr 26, 2024Observed: 2.34 ft at 9:12PM Apr 26, 2024Observed: 2.41 ft at 9:18PM Apr 26, 2024Observed: 2.48 ft at 9:24PM Apr 26, 2024Observed: 2.55 ft at 9:30PM Apr 26, 2024Observed: 2.61 ft at 9:36PM Apr 26, 2024Observed: 2.68 ft at 9:42PM Apr 26, 2024Observed: 2.71 ft at 9:48PM Apr 26, 2024Observed: 2.77 ft at 9:54PM Apr 26, 2024Observed: 2.81 ft at 10:00PM Apr 26, 2024Observed: 2.84 ft at 10:06PM Apr 26, 2024Observed: 2.89 ft at 10:12PM Apr 26, 2024Observed: 2.96 ft at 10:18PM Apr 26, 2024Observed: 3.02 ft at 10:24PM Apr 26, 2024Observed: 3.07 ft at 10:30PM Apr 26, 2024Observed: 3.11 ft at 10:36PM Apr 26, 2024Observed: 3.27 ft at 10:54PM Apr 26, 2024Observed: 3.3 ft at 11:00PM Apr 26, 2024Observed: 3.33 ft at 11:06PM Apr 26, 2024Observed: 3.34 ft at 11:12PM Apr 26, 2024Observed: 3.36 ft at 11:18PM Apr 26, 2024Observed: 3.37 ft at 11:24PM Apr 26, 2024Observed: 3.4 ft at 11:30PM Apr 26, 2024Highest Observation: 3.41 ft at 11:36PM Apr 26, 2024Observed: 3.4 ft at 11:42PM Apr 26, 2024Observed: 3.39 ft at 11:48PM Apr 26, 2024Observed: 3.36 ft at 11:54PM Apr 26, 2024Observed: 3.35 ft at 12:00AM Apr 27, 2024Observed: 3.36 ft at 12:06AM Apr 27, 2024Observed: 3.38 ft at 12:12AM Apr 27, 2024Observed: 3.38 ft at 12:18AM Apr 27, 2024Observed: 3.38 ft at 12:24AM Apr 27, 2024Observed: 3.37 ft at 12:30AM Apr 27, 2024Observed: 3.33 ft at 12:36AM Apr 27, 2024Observed: 3.29 ft at 12:42AM Apr 27, 2024Observed: 3.25 ft at 12:48AM Apr 27, 2024Observed: 3.2 ft at 12:54AM Apr 27, 2024Observed: 3.15 ft at 1:00AM Apr 27, 2024Observed: 3.1 ft at 1:06AM Apr 27, 2024Observed: 3.05 ft at 1:12AM Apr 27, 2024Observed: 3.01 ft at 1:18AM Apr 27, 2024Observed: 2.95 ft at 1:24AM Apr 27, 2024Observed: 2.9 ft at 1:30AM Apr 27, 2024Observed: 2.86 ft at 1:36AM Apr 27, 2024Observed: 2.81 ft at 1:42AM Apr 27, 2024Observed: 2.76 ft at 1:48AM Apr 27, 2024Observed: 2.7 ft at 1:54AM Apr 27, 2024Observed: 2.65 ft at 2:00AM Apr 27, 2024Observed: 2.61 ft at 2:06AM Apr 27, 2024Observed: 2.55 ft at 2:12AM Apr 27, 2024Observed: 2.48 ft at 2:18AM Apr 27, 2024Observed: 2.41 ft at 2:24AM Apr 27, 2024Observed: 2.36 ft at 2:30AM Apr 27, 2024Observed: 2.29 ft at 2:36AM Apr 27, 2024Observed: 2.23 ft at 2:42AM Apr 27, 2024Observed: 2.17 ft at 2:48AM Apr 27, 2024Observed: 2.14 ft at 2:54AM Apr 27, 2024Observed: 2.09 ft at 3:00AM Apr 27, 2024Observed: 2.03 ft at 3:06AM Apr 27, 2024Observed: 1.98 ft at 3:12AM Apr 27, 2024Observed: 1.94 ft at 3:18AM Apr 27, 2024Observed: 1.88 ft at 3:24AM Apr 27, 2024Observed: 1.85 ft at 3:30AM Apr 27, 2024Observed: 1.8 ft at 3:36AM Apr 27, 2024Observed: 1.77 ft at 3:42AM Apr 27, 2024Observed: 1.74 ft at 3:48AM Apr 27, 2024Observed: 1.7 ft at 3:54AM Apr 27, 2024Observed: 1.63 ft at 4:00AM Apr 27, 2024Observed: 1.56 ft at 4:06AM Apr 27, 2024Observed: 1.52 ft at 4:12AM Apr 27, 2024Observed: 1.44 ft at 4:18AM Apr 27, 2024Observed: 1.37 ft at 4:24AM Apr 27, 2024Observed: 1.3 ft at 4:30AM Apr 27, 2024Observed: 1.23 ft at 4:36AM Apr 27, 2024Observed: 1.19 ft at 4:42AM Apr 27, 2024Observed: 1.12 ft at 4:48AM Apr 27, 2024Observed: 1.07 ft at 4:54AM Apr 27, 2024Observed: 1.03 ft at 5:00AM Apr 27, 2024Observed: 0.98 ft at 5:06AM Apr 27, 2024Observed: 0.94 ft at 5:12AM Apr 27, 2024Observed: 0.9 ft at 5:18AM Apr 27, 2024Observed: 0.86 ft at 5:24AM Apr 27, 2024Observed: 0.82 ft at 5:30AM Apr 27, 2024Observed: 0.75 ft at 5:36AM Apr 27, 2024Observed: 0.69 ft at 5:42AM Apr 27, 2024Observed: 0.63 ft at 5:48AM Apr 27, 2024Observed: 0.55 ft at 5:54AM Apr 27, 2024Observed: 0.51 ft at 6:00AM Apr 27, 2024Observed: 0.46 ft at 6:06AM Apr 27, 2024Observed: 0.41 ft at 6:12AM Apr 27, 2024Observed: 0.39 ft at 6:18AM Apr 27, 2024Observed: 0.38 ft at 6:24AM Apr 27, 2024Observed: 0.38 ft at 6:30AM Apr 27, 2024Observed: 0.38 ft at 6:36AM Apr 27, 2024Observed: 0.36 ft at 6:54AM Apr 27, 2024Observed: 0.35 ft at 7:00AM Apr 27, 2024Observed: 0.33 ft at 7:06AM Apr 27, 2024Observed: 0.31 ft at 7:12AM Apr 27, 2024Observed: 0.31 ft at 7:18AM Apr 27, 2024Observed: 0.3 ft at 7:24AM Apr 27, 2024Observed: 0.31 ft at 7:30AM Apr 27, 2024Observed: 0.35 ft at 7:36AM Apr 27, 2024Observed: 0.37 ft at 7:42AM Apr 27, 2024Observed: 0.42 ft at 7:48AM Apr 27, 2024Observed: 0.49 ft at 7:54AM Apr 27, 2024Observed: 0.54 ft at 8:00AM Apr 27, 2024Observed: 0.6 ft at 8:06AM Apr 27, 2024Observed: 0.67 ft at 8:12AM Apr 27, 2024Observed: 0.71 ft at 8:18AM Apr 27, 2024Observed: 0.79 ft at 8:24AM Apr 27, 2024Observed: 0.83 ft at 8:30AM Apr 27, 2024Observed: 0.89 ft at 8:36AM Apr 27, 2024Observed: 0.93 ft at 8:42AM Apr 27, 2024Observed: 0.97 ft at 8:48AM Apr 27, 2024Observed: 1.02 ft at 8:54AM Apr 27, 2024Observed: 1.06 ft at 9:00AM Apr 27, 2024Observed: 1.11 ft at 9:06AM Apr 27, 2024Observed: 1.17 ft at 9:12AM Apr 27, 2024Observed: 1.21 ft at 9:18AM Apr 27, 2024Observed: 1.3 ft at 9:24AM Apr 27, 2024Observed: 1.38 ft at 9:30AM Apr 27, 2024Observed: 1.48 ft at 9:36AM Apr 27, 2024Observed: 1.56 ft at 9:42AM Apr 27, 2024Observed: 1.62 ft at 9:48AM Apr 27, 2024Observed: 1.68 ft at 9:54AM Apr 27, 2024Observed: 1.74 ft at 10:00AM Apr 27, 2024Observed: 1.78 ft at 10:06AM Apr 27, 2024Observed: 1.84 ft at 10:12AM Apr 27, 2024Observed: 1.88 ft at 10:18AM Apr 27, 2024Observed: 1.9 ft at 10:24AM Apr 27, 2024Observed: 1.93 ft at 10:30AM Apr 27, 2024Observed: 1.94 ft at 10:36AM Apr 27, 2024Observed: 1.98 ft at 10:42AM Apr 27, 2024Observed: 2.02 ft at 10:48AM Apr 27, 2024Observed: 2.05 ft at 10:54AM Apr 27, 2024Observed: 2.1 ft at 11:00AM Apr 27, 2024Observed: 2.14 ft at 11:06AM Apr 27, 2024Observed: 2.2 ft at 11:12AM Apr 27, 2024Observed: 2.21 ft at 11:18AM Apr 27, 2024Observed: 2.28 ft at 11:24AM Apr 27, 2024Observed: 2.32 ft at 11:30AM Apr 27, 2024Observed: 2.35 ft at 11:36AM Apr 27, 2024Observed: 2.34 ft at 11:42AM Apr 27, 2024Observed: 2.35 ft at 11:48AM Apr 27, 2024Observed: 2.35 ft at 11:54AM Apr 27, 2024Observed: 2.34 ft at 12:00PM Apr 27, 2024Observed: 2.35 ft at 12:06PM Apr 27, 2024Observed: 2.35 ft at 12:12PM Apr 27, 2024Observed: 2.38 ft at 12:18PM Apr 27, 2024Observed: 2.39 ft at 12:24PM Apr 27, 2024Observed: 2.39 ft at 12:30PM Apr 27, 2024Observed: 2.42 ft at 12:36PM Apr 27, 2024Observed: 2.46 ft at 12:42PM Apr 27, 2024Observed: 2.49 ft at 12:48PM Apr 27, 2024Observed: 2.48 ft at 12:54PM Apr 27, 2024Observed: 2.46 ft at 1:00PM Apr 27, 2024Observed: 2.47 ft at 1:06PM Apr 27, 2024Observed: 2.47 ft at 1:12PM Apr 27, 2024Observed: 2.45 ft at 1:18PM Apr 27, 2024Observed: 2.44 ft at 1:24PM Apr 27, 2024Observed: 2.41 ft at 1:30PM Apr 27, 2024Observed: 2.36 ft at 1:36PM Apr 27, 2024Observed: 2.31 ft at 1:42PM Apr 27, 2024Observed: 2.28 ft at 1:48PM Apr 27, 2024Observed: 2.25 ft at 1:54PM Apr 27, 2024Observed: 2.23 ft at 2:00PM Apr 27, 2024Observed: 2.21 ft at 2:06PM Apr 27, 2024Observed: 2.17 ft at 2:12PM Apr 27, 2024Observed: 2.13 ft at 2:18PM Apr 27, 2024Observed: 2.11 ft at 2:24PM Apr 27, 2024Observed: 2.05 ft at 2:30PM Apr 27, 2024Observed: 2.01 ft at 2:36PM Apr 27, 2024Observed: 1.96 ft at 2:42PM Apr 27, 2024Observed: 1.92 ft at 2:48PM Apr 27, 2024Observed: 1.87 ft at 2:54PM Apr 27, 2024Observed: 1.82 ft at 3:00PM Apr 27, 2024Observed: 1.77 ft at 3:06PM Apr 27, 2024Observed: 1.71 ft at 3:12PM Apr 27, 2024Observed: 1.68 ft at 3:18PM Apr 27, 2024Observed: 1.63 ft at 3:24PM Apr 27, 2024Observed: 1.58 ft at 3:30PM Apr 27, 2024Observed: 1.54 ft at 3:36PM Apr 27, 2024Observed: 1.51 ft at 3:42PM Apr 27, 2024Observed: 1.48 ft at 3:48PM Apr 27, 2024Observed: 1.46 ft at 3:54PM Apr 27, 2024Observed: 1.43 ft at 4:00PM Apr 27, 2024Observed: 1.38 ft at 4:06PM Apr 27, 2024Observed: 1.34 ft at 4:12PM Apr 27, 2024Observed: 1.32 ft at 4:18PM Apr 27, 2024Observed: 1.27 ft at 4:24PM Apr 27, 2024Observed: 1.25 ft at 4:30PM Apr 27, 2024Observed: 1.21 ft at 4:36PM Apr 27, 2024Observed: 1.16 ft at 4:42PM Apr 27, 2024Observed: 1.14 ft at 4:48PM Apr 27, 2024Observed: 1.1 ft at 4:54PM Apr 27, 2024Observed: 1.06 ft at 5:00PM Apr 27, 2024Observed: 1 ft at 5:06PM Apr 27, 2024Observed: 0.97 ft at 5:12PM Apr 27, 2024Observed: 0.9 ft at 5:18PM Apr 27, 2024Observed: 0.84 ft at 5:24PM Apr 27, 2024Observed: 0.8 ft at 5:30PM Apr 27, 2024Observed: 0.77 ft at 5:36PM Apr 27, 2024Observed: 0.75 ft at 5:54PM Apr 27, 2024Observed: 0.76 ft at 6:00PM Apr 27, 2024Observed: 0.78 ft at 6:06PM Apr 27, 2024Observed: 0.78 ft at 6:12PM Apr 27, 2024Observed: 0.76 ft at 6:18PM Apr 27, 2024Observed: 0.73 ft at 6:24PM Apr 27, 2024Observed: 0.72 ft at 6:30PM Apr 27, 2024Observed: 0.72 ft at 6:36PM Apr 27, 2024Observed: 0.73 ft at 6:42PM Apr 27, 2024Observed: 0.75 ft at 6:48PM Apr 27, 2024Observed: 0.76 ft at 6:54PM Apr 27, 2024Observed: 0.77 ft at 7:00PM Apr 27, 2024Observed: 0.78 ft at 7:06PM Apr 27, 2024Observed: 0.82 ft at 7:12PM Apr 27, 2024Observed: 0.86 ft at 7:18PM Apr 27, 2024Observed: 0.92 ft at 7:24PM Apr 27, 2024Observed: 0.97 ft at 7:30PM Apr 27, 2024Observed: 1 ft at 7:36PM Apr 27, 2024Observed: 1.06 ft at 7:42PM Apr 27, 2024Observed: 1.09 ft at 7:48PM Apr 27, 2024Observed: 1.14 ft at 8:00PM Apr 27, 2024Observed: 1.14 ft at 8:06PM Apr 27, 2024Observed: 1.18 ft at 8:12PM Apr 27, 2024Observed: 1.21 ft at 8:18PM Apr 27, 2024Observed: 1.23 ft at 8:24PM Apr 27, 2024Observed: 1.28 ft at 8:30PM Apr 27, 2024Observed: 1.33 ft at 8:36PM Apr 27, 2024Observed: 1.37 ft at 8:42PM Apr 27, 2024Observed: 1.42 ft at 8:48PM Apr 27, 2024Observed: 1.47 ft at 8:54PM Apr 27, 2024Observed: 1.53 ft at 9:00PM Apr 27, 2024Observed: 1.56 ft at 9:06PM Apr 27, 2024Observed: 1.63 ft at 9:12PM Apr 27, 2024Observed: 1.71 ft at 9:18PM Apr 27, 2024Observed: 1.77 ft at 9:24PM Apr 27, 2024Observed: 1.83 ft at 9:30PM Apr 27, 2024Observed: 1.86 ft at 9:36PM Apr 27, 2024Observed: 1.9 ft at 9:42PM Apr 27, 2024Observed: 1.92 ft at 9:48PM Apr 27, 2024Observed: 1.98 ft at 9:54PM Apr 27, 2024Observed: 2.05 ft at 10:00PM Apr 27, 2024Observed: 2.11 ft at 10:06PM Apr 27, 2024Observed: 2.16 ft at 10:12PM Apr 27, 2024Observed: 2.21 ft at 10:18PM Apr 27, 2024Observed: 2.29 ft at 10:24PM Apr 27, 2024Observed: 2.35 ft at 10:30PM Apr 27, 2024Observed: 2.4 ft at 10:36PM Apr 27, 2024Observed: 2.47 ft at 10:42PM Apr 27, 2024Observed: 2.54 ft at 10:48PM Apr 27, 2024Observed: 2.61 ft at 10:54PM Apr 27, 2024Observed: 2.64 ft at 11:00PM Apr 27, 2024Observed: 2.68 ft at 11:06PM Apr 27, 2024Observed: 2.74 ft at 11:12PM Apr 27, 2024Observed: 2.79 ft at 11:18PM Apr 27, 2024Observed: 2.84 ft at 11:24PM Apr 27, 2024Observed: 2.89 ft at 11:30PM Apr 27, 2024Observed: 2.95 ft at 11:36PM Apr 27, 2024Observed: 3 ft at 11:42PM Apr 27, 2024Observed: 3.05 ft at 11:48PM Apr 27, 2024Observed: 3.07 ft at 11:54PM Apr 27, 2024Observed: 3.12 ft at 12:00AM Apr 28, 2024Observed: 3.15 ft at 12:06AM Apr 28, 2024Observed: 3.17 ft at 12:12AM Apr 28, 2024Observed: 3.17 ft at 12:18AM Apr 28, 2024Observed: 3.16 ft at 12:24AM Apr 28, 2024Observed: 3.14 ft at 12:30AM Apr 28, 2024Observed: 3.14 ft at 12:36AM Apr 28, 2024Observed: 3.14 ft at 12:42AM Apr 28, 2024Observed: 3.14 ft at 12:48AM Apr 28, 2024Observed: 3.14 ft at 12:54AM Apr 28, 2024Observed: 3.14 ft at 1:00AM Apr 28, 2024Observed: 3.13 ft at 1:06AM Apr 28, 2024Observed: 3.13 ft at 1:12AM Apr 28, 2024Observed: 3.12 ft at 1:18AM Apr 28, 2024Observed: 3.1 ft at 1:24AM Apr 28, 2024Observed: 3.08 ft at 1:30AM Apr 28, 2024Observed: 3.06 ft at 1:36AM Apr 28, 2024Observed: 3.03 ft at 1:42AM Apr 28, 2024Observed: 2.98 ft at 1:48AM Apr 28, 2024Observed: 2.95 ft at 1:54AM Apr 28, 2024Observed: 2.91 ft at 2:00AM Apr 28, 2024Observed: 2.88 ft at 2:06AM Apr 28, 2024Observed: 2.84 ft at 2:12AM Apr 28, 2024Observed: 2.81 ft at 2:18AM Apr 28, 2024Observed: 2.8 ft at 2:24AM Apr 28, 2024Observed: 2.76 ft at 2:30AM Apr 28, 2024Observed: 2.71 ft at 2:36AM Apr 28, 2024Observed: 2.67 ft at 2:42AM Apr 28, 2024Observed: 2.63 ft at 2:48AM Apr 28, 2024Observed: 2.58 ft at 2:54AM Apr 28, 2024Observed: 2.53 ft at 3:00AM Apr 28, 2024Observed: 2.49 ft at 3:06AM Apr 28, 2024Observed: 2.44 ft at 3:12AM Apr 28, 2024Observed: 2.4 ft at 3:18AM Apr 28, 2024Observed: 2.33 ft at 3:24AM Apr 28, 2024Observed: 2.28 ft at 3:30AM Apr 28, 2024Observed: 2.24 ft at 3:36AM Apr 28, 2024Observed: 2.2 ft at 3:42AM Apr 28, 2024Observed: 2.15 ft at 3:48AM Apr 28, 2024Observed: 2.11 ft at 3:54AM Apr 28, 2024Observed: 2.09 ft at 4:00AM Apr 28, 2024Observed: 2.05 ft at 4:06AM Apr 28, 2024Observed: 1.98 ft at 4:12AM Apr 28, 2024Observed: 1.95 ft at 4:18AM Apr 28, 2024Observed: 1.9 ft at 4:24AM Apr 28, 2024Observed: 1.88 ft at 4:30AM Apr 28, 2024Observed: 1.85 ft at 4:36AM Apr 28, 2024Observed: 1.77 ft at 4:42AM Apr 28, 2024Observed: 1.74 ft at 4:48AM Apr 28, 2024Observed: 1.68 ft at 4:54AM Apr 28, 2024Observed: 1.64 ft at 5:00AM Apr 28, 2024Observed: 1.61 ft at 5:06AM Apr 28, 2024Observed: 1.56 ft at 5:12AM Apr 28, 2024Observed: 1.53 ft at 5:18AM Apr 28, 2024Observed: 1.45 ft at 5:24AM Apr 28, 2024Observed: 1.36 ft at 5:30AM Apr 28, 2024Observed: 1.32 ft at 5:36AM Apr 28, 2024Observed: 1.26 ft at 5:42AM Apr 28, 2024Observed: 1.21 ft at 5:48AM Apr 28, 2024Observed: 1.15 ft at 5:54AM Apr 28, 2024Observed: 1.04 ft at 6:00AM Apr 28, 2024Observed: 1.01 ft at 6:06AM Apr 28, 2024Observed: 0.98 ft at 6:12AM Apr 28, 2024Observed: 0.91 ft at 6:18AM Apr 28, 2024Observed: 0.89 ft at 6:24AM Apr 28, 2024Observed: 0.85 ft at 6:30AM Apr 28, 2024Observed: 0.82 ft at 6:36AM Apr 28, 2024Observed: 0.78 ft at 6:42AM Apr 28, 2024Observed: 0.72 ft at 6:48AM Apr 28, 2024Observed: 0.68 ft at 6:54AM Apr 28, 2024Observed: 0.67 ft at 7:00AM Apr 28, 2024Observed: 0.61 ft at 7:06AM Apr 28, 2024Observed: 0.57 ft at 7:12AM Apr 28, 2024Observed: 0.55 ft at 7:18AM Apr 28, 2024Observed: 0.54 ft at 7:24AM Apr 28, 2024Observed: 0.53 ft at 7:30AM Apr 28, 2024Observed: 0.51 ft at 7:36AM Apr 28, 2024Observed: 0.52 ft at 7:42AM Apr 28, 2024Observed: 0.54 ft at 7:48AM Apr 28, 2024Observed: 0.54 ft at 7:54AM Apr 28, 2024Observed: 0.56 ft at 8:00AM Apr 28, 2024Observed: 0.57 ft at 8:06AM Apr 28, 2024Observed: 0.6 ft at 8:12AM Apr 28, 2024Observed: 0.65 ft at 8:18AM Apr 28, 2024Observed: 0.69 ft at 8:24AM Apr 28, 2024Observed: 0.72 ft at 8:30AM Apr 28, 2024Observed: 0.73 ft at 8:36AM Apr 28, 2024Observed: 0.77 ft at 8:42AM Apr 28, 2024Observed: 0.81 ft at 8:48AM Apr 28, 2024Observed: 0.83 ft at 8:54AM Apr 28, 2024Observed: 0.88 ft at 9:00AM Apr 28, 2024Observed: 0.95 ft at 9:06AM Apr 28, 2024Observed: 1.15 ft at 9:24AM Apr 28, 2024Observed: 1.24 ft at 9:30AM Apr 28, 2024Observed: 1.32 ft at 9:36AM Apr 28, 2024Observed: 1.38 ft at 9:42AM Apr 28, 2024Observed: 1.46 ft at 9:48AM Apr 28, 2024Observed: 1.52 ft at 9:54AM Apr 28, 2024Observed: 1.6 ft at 10:00AM Apr 28, 2024Observed: 1.66 ft at 10:06AM Apr 28, 2024Observed: 1.73 ft at 10:12AM Apr 28, 2024Observed: 1.79 ft at 10:18AM Apr 28, 2024Observed: 1.86 ft at 10:24AM Apr 28, 2024Observed: 1.9 ft at 10:30AM Apr 28, 2024Observed: 1.94 ft at 10:36AM Apr 28, 2024Observed: 2 ft at 10:42AM Apr 28, 2024Observed: 2.06 ft at 10:48AM Apr 28, 2024Observed: 2.1 ft at 10:54AM Apr 28, 2024Observed: 2.16 ft at 11:00AM Apr 28, 2024Observed: 2.23 ft at 11:06AM Apr 28, 2024Observed: 2.28 ft at 11:12AM Apr 28, 2024Observed: 2.35 ft at 11:18AM Apr 28, 2024Observed: 2.4 ft at 11:24AM Apr 28, 2024Observed: 2.45 ft at 11:30AM Apr 28, 2024Observed: 2.48 ft at 11:36AM Apr 28, 2024Observed: 2.5 ft at 11:42AM Apr 28, 2024Observed: 2.51 ft at 11:48AM Apr 28, 2024Observed: 2.57 ft at 11:54AM Apr 28, 2024Observed: 2.58 ft at 12:00PM Apr 28, 2024Observed: 2.59 ft at 12:06PM Apr 28, 2024Observed: 2.6 ft at 12:12PM Apr 28, 2024Observed: 2.63 ft at 12:18PM Apr 28, 2024Observed: 2.67 ft at 12:24PM Apr 28, 2024Observed: 2.71 ft at 12:30PM Apr 28, 2024Observed: 2.71 ft at 12:36PM Apr 28, 2024Observed: 2.7 ft at 12:42PM Apr 28, 2024Observed: 2.74 ft at 12:48PM Apr 28, 2024Observed: 2.76 ft at 12:54PM Apr 28, 2024Observed: 2.77 ft at 1:00PM Apr 28, 2024Observed: 2.79 ft at 1:06PM Apr 28, 2024Observed: 2.8 ft at 1:12PM Apr 28, 2024Observed: 2.81 ft at 1:18PM Apr 28, 2024Observed: 2.8 ft at 1:24PM Apr 28, 2024Observed: 2.79 ft at 1:30PM Apr 28, 2024Observed: 2.81 ft at 1:36PM Apr 28, 2024Observed: 2.79 ft at 1:42PM Apr 28, 2024Observed: 2.78 ft at 1:48PM Apr 28, 2024Observed: 2.76 ft at 1:54PM Apr 28, 2024Observed: 2.73 ft at 2:00PM Apr 28, 2024Observed: 2.73 ft at 2:06PM Apr 28, 2024Observed: 2.71 ft at 2:12PM Apr 28, 2024Observed: 2.67 ft at 2:18PM Apr 28, 2024Observed: 2.64 ft at 2:24PM Apr 28, 2024Observed: 2.62 ft at 2:30PM Apr 28, 2024Observed: 2.6 ft at 2:36PM Apr 28, 2024Observed: 2.58 ft at 2:42PM Apr 28, 2024Observed: 2.58 ft at 2:48PM Apr 28, 2024Observed: 2.53 ft at 2:54PM Apr 28, 2024Observed: 2.52 ft at 3:00PM Apr 28, 2024Observed: 2.5 ft at 3:06PM Apr 28, 2024Observed: 2.42 ft at 3:12PM Apr 28, 2024Observed: 2.38 ft at 3:18PM Apr 28, 2024Observed: 2.35 ft at 3:24PM Apr 28, 2024Observed: 2.33 ft at 3:30PM Apr 28, 2024Observed: 2.3 ft at 3:36PM Apr 28, 2024Observed: 2.23 ft at 3:42PM Apr 28, 2024Observed: 2.23 ft at 3:48PM Apr 28, 2024Observed: 2.19 ft at 3:54PM Apr 28, 2024Observed: 2.12 ft at 4:00PM Apr 28, 2024Observed: 2.11 ft at 4:06PM Apr 28, 2024Observed: 2.12 ft at 4:12PM Apr 28, 2024Observed: 2.12 ft at 4:18PM Apr 28, 2024Forecast: 1.8 ft 5:00PM Apr 28, 2024Forecast: 1.5 ft 6:00PM Apr 28, 2024Forecast: 1.3 ft 7:00PM Apr 28, 2024Forecast: 1.4 ft 8:00PM Apr 28, 2024Forecast: 1.7 ft 9:00PM Apr 28, 2024Forecast: 2.2 ft 10:00PM Apr 28, 2024Forecast: 2.8 ft 11:00PM Apr 28, 2024Forecast: 3.3 ft 12:00AM Apr 29, 2024Forecast: 3.5 ft 1:00AM Apr 29, 2024Forecast: 3.6 ft 2:00AM Apr 29, 2024Forecast: 3.3 ft 3:00AM Apr 29, 2024Forecast: 2.9 ft 4:00AM Apr 29, 2024Forecast: 2.3 ft 5:00AM Apr 29, 2024Forecast: 1.7 ft 6:00AM Apr 29, 2024Forecast: 1.2 ft 7:00AM Apr 29, 2024Forecast: 0.9 ft 8:00AM Apr 29, 2024Forecast: 0.9 ft 9:00AM Apr 29, 2024Forecast: 1.2 ft 10:00AM Apr 29, 2024Forecast: 1.9 ft 11:00AM Apr 29, 2024Forecast: 2.4 ft 12:00PM Apr 29, 2024Forecast: 2.9 ft 1:00PM Apr 29, 2024Forecast: 3 ft 2:00PM Apr 29, 2024Forecast: 3.1 ft 3:00PM Apr 29, 2024Forecast: 2.9 ft 4:00PM Apr 29, 2024Forecast: 2.5 ft 5:00PM Apr 29, 2024Forecast: 2.2 ft 6:00PM Apr 29, 2024Forecast: 1.8 ft 7:00PM Apr 29, 2024Forecast: 1.6 ft 8:00PM Apr 29, 2024Forecast: 1.7 ft 9:00PM Apr 29, 2024Forecast: 1.9 ft 10:00PM Apr 29, 2024Forecast: 2.4 ft 11:00PM Apr 29, 2024Forecast: 3 ft 12:00AM Apr 30, 2024Forecast: 3.4 ft 1:00AM Apr 30, 2024Forecast: 3.7 ft 2:00AM Apr 30, 2024Forecast: 3.6 ft 3:00AM Apr 30, 2024Forecast: 3.4 ft 4:00AM Apr 30, 2024Forecast: 3 ft 5:00AM Apr 30, 2024Forecast: 2.4 ft 6:00AM Apr 30, 2024Forecast: 1.9 ft 7:00AM Apr 30, 2024Forecast: 1.3 ft 8:00AM Apr 30, 2024Forecast: 1.1 ft 9:00AM Apr 30, 2024Forecast: 1.1 ft 10:00AM Apr 30, 2024Forecast: 1.5 ft 11:00AM Apr 30, 2024Forecast: 2.2 ft 12:00PM Apr 30, 2024Forecast: 2.7 ft 1:00PM Apr 30, 2024Forecast: 3 ft 2:00PM Apr 30, 2024Forecast: 3.3 ft 3:00PM Apr 30, 2024Forecast: 3.2 ft 4:00PM Apr 30, 2024Forecast: 3 ft 5:00PM Apr 30, 2024Forecast: 2.7 ft 6:00PM Apr 30, 2024Forecast: 2.4 ft 7:00PM Apr 30, 2024Forecast: 2 ft 8:00PM Apr 30, 2024Forecast: 1.8 ft 9:00PM Apr 30, 2024Forecast: 1.7 ft 10:00PM Apr 30, 2024Forecast: 2.1 ft 11:00PM Apr 30, 2024Forecast: 2.6 ft 12:00AM May 01, 2024Forecast: 3.2 ft 1:00AM May 01, 2024Forecast: 3.7 ft 2:00AM May 01, 2024Highest Forecast: 3.9 ft 3:00AM May 01, 2024Highest Forecast: 3.9 ft 4:00AM May 01, 2024Forecast: 3.7 ft 5:00AM May 01, 2024Forecast: 3.3 ft 6:00AM May 01, 2024Forecast: 2.8 ft 7:00AM May 01, 2024Forecast: 2.2 ft 8:00AM May 01, 2024Forecast: 1.6 ft 9:00AM May 01, 2024Forecast: 1.2 ft 10:00AM May 01, 2024Forecast: 1.3 ft 11:00AM May 01, 2024Forecast: 1.6 ft 12:00PM May 01, 2024Forecast: 2.3 ft 1:00PM May 01, 2024Forecast: 2.9 ft 2:00PM May 01, 2024Forecast: 3.2 ft 3:00PM May 01, 2024NOAA National Ocean ServiceNLHC3(plotting HMIRG) Graph Created (4:46PM Apr 28, 2024)ObservedForecast (issued 4:41AM Apr 28)Latest observed value: 2.12 ft at 4:18 PM EDT 28-Apr-2024. Flood Stage is 5 ft
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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.

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): -1.8

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.
Zoom Level:16
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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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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.
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Latitude: 41.361000° N, Longitude: 72.095556° 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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