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Hydrograph River at a Glance Download
Long Island Sound near New London Harbor (IN MLLW) Tide Height (ft)Observed: 1.04 ft at 9:18AM Apr 30, 2024Observed: 1.05 ft at 9:24AM Apr 30, 2024Observed: 1.07 ft at 9:30AM Apr 30, 2024Observed: 1.08 ft at 9:36AM Apr 30, 2024Observed: 1.1 ft at 9:42AM Apr 30, 2024Observed: 1.13 ft at 9:48AM Apr 30, 2024Observed: 1.13 ft at 9:54AM Apr 30, 2024Observed: 1.16 ft at 10:00AM Apr 30, 2024Observed: 1.17 ft at 10:06AM Apr 30, 2024Observed: 1.2 ft at 10:12AM Apr 30, 2024Observed: 1.23 ft at 10:18AM Apr 30, 2024Observed: 1.25 ft at 10:24AM Apr 30, 2024Observed: 1.27 ft at 10:30AM Apr 30, 2024Observed: 1.27 ft at 10:36AM Apr 30, 2024Observed: 1.3 ft at 10:42AM Apr 30, 2024Observed: 1.33 ft at 10:48AM Apr 30, 2024Observed: 1.39 ft at 10:54AM Apr 30, 2024Observed: 1.47 ft at 11:00AM Apr 30, 2024Observed: 1.54 ft at 11:06AM Apr 30, 2024Observed: 1.66 ft at 11:12AM Apr 30, 2024Observed: 1.72 ft at 11:18AM Apr 30, 2024Observed: 1.77 ft at 11:24AM Apr 30, 2024Observed: 1.82 ft at 11:30AM Apr 30, 2024Observed: 1.91 ft at 11:36AM Apr 30, 2024Observed: 1.98 ft at 11:42AM Apr 30, 2024Observed: 2.05 ft at 11:48AM Apr 30, 2024Observed: 2.1 ft at 11:54AM Apr 30, 2024Observed: 2.16 ft at 12:00PM Apr 30, 2024Observed: 2.19 ft at 12:06PM Apr 30, 2024Observed: 2.22 ft at 12:12PM Apr 30, 2024Observed: 2.26 ft at 12:18PM Apr 30, 2024Observed: 2.31 ft at 12:24PM Apr 30, 2024Observed: 2.36 ft at 12:30PM Apr 30, 2024Observed: 2.41 ft at 12:36PM Apr 30, 2024Observed: 2.51 ft at 12:42PM Apr 30, 2024Observed: 2.59 ft at 12:48PM Apr 30, 2024Observed: 2.69 ft at 12:54PM Apr 30, 2024Observed: 2.76 ft at 1:00PM Apr 30, 2024Observed: 2.82 ft at 1:06PM Apr 30, 2024Observed: 2.87 ft at 1:12PM Apr 30, 2024Observed: 2.87 ft at 1:18PM Apr 30, 2024Observed: 2.87 ft at 1:24PM Apr 30, 2024Observed: 2.87 ft at 1:30PM Apr 30, 2024Observed: 2.86 ft at 1:36PM Apr 30, 2024Observed: 2.87 ft at 1:42PM Apr 30, 2024Observed: 2.88 ft at 1:48PM Apr 30, 2024Observed: 2.9 ft at 1:54PM Apr 30, 2024Observed: 2.95 ft at 2:00PM Apr 30, 2024Observed: 2.98 ft at 2:06PM Apr 30, 2024Observed: 3.03 ft at 2:12PM Apr 30, 2024Observed: 3.1 ft at 2:18PM Apr 30, 2024Observed: 3.14 ft at 2:24PM Apr 30, 2024Observed: 3.2 ft at 2:30PM Apr 30, 2024Observed: 3.24 ft at 2:36PM Apr 30, 2024Observed: 3.23 ft at 2:42PM Apr 30, 2024Observed: 3.25 ft at 2:48PM Apr 30, 2024Observed: 3.25 ft at 2:54PM Apr 30, 2024Observed: 3.23 ft at 3:00PM Apr 30, 2024Observed: 3.2 ft at 3:06PM Apr 30, 2024Observed: 3.21 ft at 3:12PM Apr 30, 2024Observed: 3.22 ft at 3:18PM Apr 30, 2024Observed: 3.24 ft at 3:24PM Apr 30, 2024Observed: 3.24 ft at 3:30PM Apr 30, 2024Observed: 3.26 ft at 3:36PM Apr 30, 2024Observed: 3.27 ft at 3:42PM Apr 30, 2024Observed: 3.31 ft at 3:48PM Apr 30, 2024Observed: 3.32 ft at 3:54PM Apr 30, 2024Observed: 3.33 ft at 4:00PM Apr 30, 2024Observed: 3.34 ft at 4:06PM Apr 30, 2024Observed: 3.32 ft at 4:12PM Apr 30, 2024Observed: 3.32 ft at 4:18PM Apr 30, 2024Observed: 3.29 ft at 4:24PM Apr 30, 2024Observed: 3.26 ft at 4:30PM Apr 30, 2024Observed: 3.24 ft at 4:36PM Apr 30, 2024Observed: 3.2 ft at 4:42PM Apr 30, 2024Observed: 3.15 ft at 4:48PM Apr 30, 2024Observed: 3.15 ft at 4:54PM Apr 30, 2024Observed: 3.14 ft at 5:00PM Apr 30, 2024Observed: 3.12 ft at 5:06PM Apr 30, 2024Observed: 3.11 ft at 5:12PM Apr 30, 2024Observed: 3.09 ft at 5:18PM Apr 30, 2024Observed: 3.06 ft at 5:24PM Apr 30, 2024Observed: 3.02 ft at 5:30PM Apr 30, 2024Observed: 2.97 ft at 5:36PM Apr 30, 2024Observed: 2.94 ft at 5:42PM Apr 30, 2024Observed: 2.89 ft at 5:48PM Apr 30, 2024Observed: 2.86 ft at 5:54PM Apr 30, 2024Observed: 2.83 ft at 6:00PM Apr 30, 2024Observed: 2.81 ft at 6:06PM Apr 30, 2024Observed: 2.76 ft at 6:12PM Apr 30, 2024Observed: 2.74 ft at 6:18PM Apr 30, 2024Observed: 2.7 ft at 6:24PM Apr 30, 2024Observed: 2.69 ft at 6:30PM Apr 30, 2024Observed: 2.66 ft at 6:36PM Apr 30, 2024Observed: 2.62 ft at 6:42PM Apr 30, 2024Observed: 2.59 ft at 6:48PM Apr 30, 2024Observed: 2.58 ft at 6:54PM Apr 30, 2024Observed: 2.56 ft at 7:00PM Apr 30, 2024Observed: 2.54 ft at 7:06PM Apr 30, 2024Observed: 2.51 ft at 7:12PM Apr 30, 2024Observed: 2.44 ft at 7:18PM Apr 30, 2024Observed: 2.38 ft at 7:24PM Apr 30, 2024Observed: 2.36 ft at 7:30PM Apr 30, 2024Observed: 2.32 ft at 7:36PM Apr 30, 2024Observed: 2.32 ft at 7:42PM Apr 30, 2024Observed: 2.3 ft at 7:48PM Apr 30, 2024Observed: 1.88 ft at 8:48PM Apr 30, 2024Observed: 1.84 ft at 8:54PM Apr 30, 2024Observed: 1.82 ft at 9:00PM Apr 30, 2024Observed: 1.81 ft at 9:06PM Apr 30, 2024Observed: 1.79 ft at 9:12PM Apr 30, 2024Observed: 1.75 ft at 9:18PM Apr 30, 2024Observed: 1.75 ft at 9:24PM Apr 30, 2024Observed: 1.76 ft at 9:30PM Apr 30, 2024Observed: 1.73 ft at 9:36PM Apr 30, 2024Observed: 1.68 ft at 9:42PM Apr 30, 2024Observed: 1.65 ft at 9:48PM Apr 30, 2024Observed: 1.64 ft at 9:54PM Apr 30, 2024Observed: 1.64 ft at 10:00PM Apr 30, 2024Observed: 1.62 ft at 10:06PM Apr 30, 2024Observed: 1.62 ft at 10:12PM Apr 30, 2024Observed: 1.67 ft at 10:18PM Apr 30, 2024Observed: 1.71 ft at 10:24PM Apr 30, 2024Observed: 1.74 ft at 10:30PM Apr 30, 2024Observed: 1.77 ft at 10:36PM Apr 30, 2024Observed: 1.83 ft at 10:42PM Apr 30, 2024Observed: 1.86 ft at 10:48PM Apr 30, 2024Observed: 1.9 ft at 10:54PM Apr 30, 2024Observed: 1.9 ft at 11:00PM Apr 30, 2024Observed: 1.96 ft at 11:06PM Apr 30, 2024Observed: 2.01 ft at 11:12PM Apr 30, 2024Observed: 2.04 ft at 11:18PM Apr 30, 2024Observed: 2.08 ft at 11:24PM Apr 30, 2024Observed: 2.15 ft at 11:30PM Apr 30, 2024Observed: 2.19 ft at 11:36PM Apr 30, 2024Observed: 2.23 ft at 11:42PM Apr 30, 2024Observed: 2.26 ft at 11:48PM Apr 30, 2024Observed: 2.34 ft at 11:54PM Apr 30, 2024Observed: 2.41 ft at 12:00AM May 01, 2024Observed: 2.47 ft at 12:06AM May 01, 2024Observed: 2.6 ft at 12:12AM May 01, 2024Observed: 2.69 ft at 12:18AM May 01, 2024Observed: 2.74 ft at 12:24AM May 01, 2024Observed: 2.87 ft at 12:30AM May 01, 2024Observed: 2.84 ft at 12:36AM May 01, 2024Observed: 2.85 ft at 12:42AM May 01, 2024Observed: 2.8 ft at 12:48AM May 01, 2024Observed: 2.81 ft at 12:54AM May 01, 2024Observed: 2.93 ft at 1:00AM May 01, 2024Observed: 3.02 ft at 1:06AM May 01, 2024Observed: 3.19 ft at 1:12AM May 01, 2024Observed: 3.23 ft at 1:18AM May 01, 2024Observed: 3.24 ft at 1:24AM May 01, 2024Observed: 3.23 ft at 1:30AM May 01, 2024Observed: 3.34 ft at 1:36AM May 01, 2024Observed: 3.38 ft at 1:42AM May 01, 2024Observed: 3.42 ft at 1:48AM May 01, 2024Observed: 3.45 ft at 1:54AM May 01, 2024Observed: 3.43 ft at 2:00AM May 01, 2024Observed: 3.41 ft at 2:06AM May 01, 2024Observed: 3.35 ft at 2:12AM May 01, 2024Observed: 3.44 ft at 2:18AM May 01, 2024Observed: 3.5 ft at 2:24AM May 01, 2024Observed: 3.49 ft at 2:30AM May 01, 2024Observed: 3.52 ft at 2:36AM May 01, 2024Observed: 3.57 ft at 2:42AM May 01, 2024Observed: 3.64 ft at 2:48AM May 01, 2024Observed: 3.67 ft at 2:54AM May 01, 2024Observed: 3.73 ft at 3:00AM May 01, 2024Observed: 3.77 ft at 3:06AM May 01, 2024Highest Observation: 3.78 ft at 3:12AM May 01, 2024Observed: 3.67 ft at 3:18AM May 01, 2024Observed: 3.63 ft at 3:24AM May 01, 2024Observed: 3.65 ft at 3:30AM May 01, 2024Observed: 3.62 ft at 3:36AM May 01, 2024Observed: 3.66 ft at 3:42AM May 01, 2024Observed: 3.65 ft at 3:48AM May 01, 2024Observed: 3.69 ft at 3:54AM May 01, 2024Observed: 3.71 ft at 4:00AM May 01, 2024Observed: 3.66 ft at 4:06AM May 01, 2024Observed: 3.65 ft at 4:12AM May 01, 2024Observed: 3.61 ft at 4:18AM May 01, 2024Observed: 3.62 ft at 4:24AM May 01, 2024Observed: 3.64 ft at 4:30AM May 01, 2024Observed: 3.63 ft at 4:36AM May 01, 2024Observed: 3.56 ft at 4:42AM May 01, 2024Observed: 3.53 ft at 4:48AM May 01, 2024Observed: 3.49 ft at 4:54AM May 01, 2024Observed: 3.42 ft at 5:00AM May 01, 2024Observed: 3.39 ft at 5:06AM May 01, 2024Observed: 3.32 ft at 5:12AM May 01, 2024Observed: 3.33 ft at 5:18AM May 01, 2024Observed: 3.31 ft at 5:24AM May 01, 2024Observed: 3.26 ft at 5:30AM May 01, 2024Observed: 3.27 ft at 5:36AM May 01, 2024Observed: 3.23 ft at 5:42AM May 01, 2024Observed: 3.17 ft at 5:48AM May 01, 2024Observed: 3.11 ft at 5:54AM May 01, 2024Observed: 3.11 ft at 6:00AM May 01, 2024Observed: 3.08 ft at 6:06AM May 01, 2024Observed: 3.03 ft at 6:12AM May 01, 2024Observed: 2.99 ft at 6:18AM May 01, 2024Observed: 2.97 ft at 6:24AM May 01, 2024Observed: 2.95 ft at 6:30AM May 01, 2024Observed: 2.89 ft at 6:36AM May 01, 2024Observed: 2.84 ft at 6:42AM May 01, 2024Observed: 2.77 ft at 6:48AM May 01, 2024Observed: 2.75 ft at 6:54AM May 01, 2024Observed: 2.7 ft at 7:00AM May 01, 2024Observed: 2.65 ft at 7:06AM May 01, 2024Observed: 2.57 ft at 7:12AM May 01, 2024Observed: 2.5 ft at 7:18AM May 01, 2024Observed: 2.45 ft at 7:24AM May 01, 2024Observed: 2.37 ft at 7:30AM May 01, 2024Observed: 2.32 ft at 7:36AM May 01, 2024Observed: 2.29 ft at 7:42AM May 01, 2024Observed: 2.27 ft at 7:48AM May 01, 2024Observed: 2.23 ft at 7:54AM May 01, 2024Observed: 2.17 ft at 8:00AM May 01, 2024Observed: 2.14 ft at 8:06AM May 01, 2024Observed: 2.06 ft at 8:12AM May 01, 2024Observed: 1.98 ft at 8:18AM May 01, 2024Observed: 1.91 ft at 8:24AM May 01, 2024Observed: 1.84 ft at 8:30AM May 01, 2024Observed: 1.76 ft at 8:36AM May 01, 2024Observed: 1.65 ft at 8:42AM May 01, 2024Observed: 1.59 ft at 8:48AM May 01, 2024Observed: 1.54 ft at 8:54AM May 01, 2024Observed: 1.48 ft at 9:00AM May 01, 2024Observed: 1.43 ft at 9:06AM May 01, 2024Observed: 1.37 ft at 9:12AM May 01, 2024Observed: 1.36 ft at 9:18AM May 01, 2024Observed: 1.31 ft at 9:24AM May 01, 2024Observed: 1.29 ft at 9:30AM May 01, 2024Observed: 1.28 ft at 9:36AM May 01, 2024Observed: 1.24 ft at 9:42AM May 01, 2024Observed: 1.23 ft at 9:48AM May 01, 2024Observed: 1.21 ft at 9:54AM May 01, 2024Observed: 1.2 ft at 10:00AM May 01, 2024Observed: 1.21 ft at 10:06AM May 01, 2024Observed: 1.18 ft at 10:12AM May 01, 2024Observed: 1.18 ft at 10:18AM May 01, 2024Observed: 1.15 ft at 10:24AM May 01, 2024Observed: 1.15 ft at 10:30AM May 01, 2024Observed: 1.12 ft at 10:36AM May 01, 2024Observed: 1.13 ft at 10:42AM May 01, 2024Observed: 1.17 ft at 10:48AM May 01, 2024Observed: 1.19 ft at 10:54AM May 01, 2024Observed: 1.23 ft at 11:00AM May 01, 2024Observed: 1.25 ft at 11:06AM May 01, 2024Observed: 1.26 ft at 11:12AM May 01, 2024Observed: 1.28 ft at 11:18AM May 01, 2024Observed: 1.33 ft at 11:24AM May 01, 2024Observed: 1.36 ft at 11:30AM May 01, 2024Observed: 1.4 ft at 11:36AM May 01, 2024Observed: 1.47 ft at 11:42AM May 01, 2024Observed: 1.52 ft at 11:48AM May 01, 2024Observed: 1.66 ft at 12:12PM May 01, 2024Observed: 1.7 ft at 12:18PM May 01, 2024Observed: 1.75 ft at 12:24PM May 01, 2024Observed: 1.79 ft at 12:30PM May 01, 2024Observed: 1.86 ft at 12:36PM May 01, 2024Observed: 1.97 ft at 12:42PM May 01, 2024Observed: 2.06 ft at 12:48PM May 01, 2024Observed: 2.13 ft at 12:54PM May 01, 2024Observed: 2.17 ft at 1:00PM May 01, 2024Observed: 2.22 ft at 1:06PM May 01, 2024Observed: 2.29 ft at 1:12PM May 01, 2024Observed: 2.37 ft at 1:18PM May 01, 2024Observed: 2.4 ft at 1:24PM May 01, 2024Observed: 2.44 ft at 1:30PM May 01, 2024Observed: 2.51 ft at 1:36PM May 01, 2024Observed: 2.55 ft at 1:42PM May 01, 2024Observed: 2.6 ft at 1:48PM May 01, 2024Observed: 2.62 ft at 1:54PM May 01, 2024Observed: 2.66 ft at 2:00PM May 01, 2024Observed: 2.72 ft at 2:06PM May 01, 2024Observed: 2.79 ft at 2:12PM May 01, 2024Observed: 2.86 ft at 2:18PM May 01, 2024Observed: 2.91 ft at 2:24PM May 01, 2024Observed: 2.95 ft at 2:30PM May 01, 2024Observed: 3 ft at 2:36PM May 01, 2024Observed: 3.02 ft at 2:42PM May 01, 2024Observed: 3 ft at 2:48PM May 01, 2024Observed: 3.01 ft at 2:54PM May 01, 2024Observed: 3.03 ft at 3:00PM May 01, 2024Observed: 3.06 ft at 3:06PM May 01, 2024Observed: 3.08 ft at 3:12PM May 01, 2024Observed: 3.05 ft at 3:18PM May 01, 2024Observed: 3.08 ft at 3:24PM May 01, 2024Observed: 3.08 ft at 3:30PM May 01, 2024Observed: 3.09 ft at 3:36PM May 01, 2024Observed: 3.13 ft at 3:42PM May 01, 2024Observed: 3.14 ft at 3:48PM May 01, 2024Observed: 3.16 ft at 3:54PM May 01, 2024Observed: 3.17 ft at 4:00PM May 01, 2024Observed: 3.22 ft at 4:06PM May 01, 2024Observed: 3.24 ft at 4:12PM May 01, 2024Observed: 3.27 ft at 4:18PM May 01, 2024Observed: 3.25 ft at 4:24PM May 01, 2024Observed: 3.23 ft at 4:30PM May 01, 2024Observed: 3.23 ft at 4:36PM May 01, 2024Observed: 3.22 ft at 4:54PM May 01, 2024Observed: 3.23 ft at 5:00PM May 01, 2024Observed: 3.26 ft at 5:06PM May 01, 2024Observed: 3.25 ft at 5:12PM May 01, 2024Observed: 3.25 ft at 5:18PM May 01, 2024Observed: 3.23 ft at 5:24PM May 01, 2024Observed: 3.23 ft at 5:30PM May 01, 2024Observed: 3.23 ft at 5:36PM May 01, 2024Observed: 3.22 ft at 5:42PM May 01, 2024Observed: 3.19 ft at 5:48PM May 01, 2024Observed: 3.19 ft at 5:54PM May 01, 2024Observed: 3.13 ft at 6:00PM May 01, 2024Observed: 3.1 ft at 6:06PM May 01, 2024Observed: 3.05 ft at 6:12PM May 01, 2024Observed: 3.02 ft at 6:18PM May 01, 2024Observed: 2.99 ft at 6:24PM May 01, 2024Observed: 2.96 ft at 6:30PM May 01, 2024Observed: 2.94 ft at 6:36PM May 01, 2024Observed: 2.92 ft at 6:42PM May 01, 2024Observed: 2.9 ft at 6:48PM May 01, 2024Observed: 2.86 ft at 6:54PM May 01, 2024Observed: 2.81 ft at 7:00PM May 01, 2024Observed: 2.77 ft at 7:06PM May 01, 2024Observed: 2.76 ft at 7:12PM May 01, 2024Observed: 2.73 ft at 7:18PM May 01, 2024Observed: 2.68 ft at 7:24PM May 01, 2024Observed: 2.63 ft at 7:30PM May 01, 2024Observed: 2.62 ft at 7:36PM May 01, 2024Observed: 2.57 ft at 7:42PM May 01, 2024Observed: 2.51 ft at 7:48PM May 01, 2024Observed: 2.4 ft at 8:00PM May 01, 2024Observed: 2.36 ft at 8:06PM May 01, 2024Observed: 2.32 ft at 8:12PM May 01, 2024Observed: 2.29 ft at 8:18PM May 01, 2024Observed: 2.24 ft at 8:24PM May 01, 2024Observed: 2.19 ft at 8:30PM May 01, 2024Observed: 2.14 ft at 8:36PM May 01, 2024Observed: 2.08 ft at 8:42PM May 01, 2024Observed: 2.02 ft at 8:48PM May 01, 2024Observed: 1.97 ft at 8:54PM May 01, 2024Observed: 1.95 ft at 9:00PM May 01, 2024Observed: 1.93 ft at 9:06PM May 01, 2024Observed: 1.86 ft at 9:12PM May 01, 2024Observed: 1.83 ft at 9:18PM May 01, 2024Observed: 1.75 ft at 9:24PM May 01, 2024Observed: 1.7 ft at 9:30PM May 01, 2024Observed: 1.64 ft at 9:36PM May 01, 2024Observed: 1.59 ft at 9:42PM May 01, 2024Observed: 1.56 ft at 9:48PM May 01, 2024Observed: 1.52 ft at 9:54PM May 01, 2024Observed: 1.49 ft at 10:00PM May 01, 2024Observed: 1.47 ft at 10:06PM May 01, 2024Observed: 1.44 ft at 10:12PM May 01, 2024Observed: 1.41 ft at 10:18PM May 01, 2024Observed: 1.37 ft at 10:24PM May 01, 2024Observed: 1.36 ft at 10:30PM May 01, 2024Observed: 1.35 ft at 10:36PM May 01, 2024Observed: 1.37 ft at 10:42PM May 01, 2024Observed: 1.38 ft at 10:48PM May 01, 2024Observed: 1.39 ft at 10:54PM May 01, 2024Observed: 1.39 ft at 11:00PM May 01, 2024Observed: 1.39 ft at 11:06PM May 01, 2024Observed: 1.37 ft at 11:12PM May 01, 2024Observed: 1.4 ft at 11:18PM May 01, 2024Observed: 1.41 ft at 11:24PM May 01, 2024Observed: 1.42 ft at 11:30PM May 01, 2024Observed: 1.41 ft at 11:36PM May 01, 2024Observed: 1.43 ft at 11:42PM May 01, 2024Observed: 1.46 ft at 11:48PM May 01, 2024Observed: 1.49 ft at 11:54PM May 01, 2024Observed: 1.52 ft at 12:00AM May 02, 2024Observed: 1.56 ft at 12:06AM May 02, 2024Observed: 1.62 ft at 12:12AM May 02, 2024Observed: 1.68 ft at 12:18AM May 02, 2024Observed: 1.72 ft at 12:24AM May 02, 2024Observed: 1.78 ft at 12:30AM May 02, 2024Observed: 1.82 ft at 12:36AM May 02, 2024Observed: 1.89 ft at 12:42AM May 02, 2024Observed: 1.94 ft at 12:48AM May 02, 2024Observed: 1.98 ft at 12:54AM May 02, 2024Observed: 2.06 ft at 1:00AM May 02, 2024Observed: 2.12 ft at 1:06AM May 02, 2024Observed: 2.15 ft at 1:12AM May 02, 2024Observed: 2.16 ft at 1:18AM May 02, 2024Observed: 2.21 ft at 1:24AM May 02, 2024Observed: 2.3 ft at 1:30AM May 02, 2024Observed: 2.36 ft at 1:36AM May 02, 2024Observed: 2.41 ft at 1:42AM May 02, 2024Observed: 2.5 ft at 1:48AM May 02, 2024Observed: 2.57 ft at 1:54AM May 02, 2024Observed: 2.63 ft at 2:00AM May 02, 2024Observed: 2.64 ft at 2:06AM May 02, 2024Observed: 2.68 ft at 2:12AM May 02, 2024Observed: 2.75 ft at 2:18AM May 02, 2024Observed: 2.78 ft at 2:24AM May 02, 2024Observed: 2.78 ft at 2:30AM May 02, 2024Observed: 2.84 ft at 2:36AM May 02, 2024Observed: 2.9 ft at 2:42AM May 02, 2024Observed: 2.92 ft at 2:48AM May 02, 2024Observed: 2.97 ft at 2:54AM May 02, 2024Observed: 3 ft at 3:00AM May 02, 2024Observed: 3.03 ft at 3:06AM May 02, 2024Observed: 3.06 ft at 3:12AM May 02, 2024Observed: 3.08 ft at 3:18AM May 02, 2024Observed: 3.1 ft at 3:24AM May 02, 2024Observed: 3.13 ft at 3:30AM May 02, 2024Observed: 3.11 ft at 3:36AM May 02, 2024Observed: 3.14 ft at 3:42AM May 02, 2024Observed: 3.16 ft at 3:48AM May 02, 2024Observed: 3.18 ft at 3:54AM May 02, 2024Observed: 3.22 ft at 4:00AM May 02, 2024Observed: 3.25 ft at 4:06AM May 02, 2024Observed: 3.29 ft at 4:12AM May 02, 2024Observed: 3.3 ft at 4:18AM May 02, 2024Observed: 3.32 ft at 4:24AM May 02, 2024Observed: 3.37 ft at 4:30AM May 02, 2024Observed: 3.4 ft at 4:36AM May 02, 2024Observed: 3.39 ft at 4:42AM May 02, 2024Observed: 3.39 ft at 4:48AM May 02, 2024Observed: 3.39 ft at 4:54AM May 02, 2024Observed: 3.37 ft at 5:00AM May 02, 2024Observed: 3.37 ft at 5:06AM May 02, 2024Observed: 3.36 ft at 5:12AM May 02, 2024Observed: 3.33 ft at 5:18AM May 02, 2024Observed: 3.33 ft at 5:24AM May 02, 2024Observed: 3.32 ft at 5:30AM May 02, 2024Observed: 3.33 ft at 5:36AM May 02, 2024Observed: 3.33 ft at 5:42AM May 02, 2024Observed: 3.31 ft at 5:48AM May 02, 2024Observed: 3.29 ft at 5:54AM May 02, 2024Observed: 3.25 ft at 6:00AM May 02, 2024Observed: 3.22 ft at 6:06AM May 02, 2024Observed: 3.08 ft at 6:24AM May 02, 2024Observed: 3.02 ft at 6:30AM May 02, 2024Observed: 2.96 ft at 6:36AM May 02, 2024Observed: 2.9 ft at 6:42AM May 02, 2024Observed: 2.84 ft at 6:48AM May 02, 2024Observed: 2.79 ft at 6:54AM May 02, 2024Observed: 2.76 ft at 7:00AM May 02, 2024Observed: 2.72 ft at 7:06AM May 02, 2024Observed: 2.69 ft at 7:12AM May 02, 2024Observed: 2.68 ft at 7:18AM May 02, 2024Observed: 2.62 ft at 7:24AM May 02, 2024Observed: 2.58 ft at 7:30AM May 02, 2024Observed: 2.54 ft at 7:36AM May 02, 2024Observed: 2.51 ft at 7:42AM May 02, 2024Observed: 2.5 ft at 7:48AM May 02, 2024Observed: 2.45 ft at 7:54AM May 02, 2024Observed: 2.42 ft at 8:00AM May 02, 2024Observed: 2.39 ft at 8:06AM May 02, 2024Observed: 2.36 ft at 8:12AM May 02, 2024Observed: 2.31 ft at 8:18AM May 02, 2024Observed: 2.28 ft at 8:24AM May 02, 2024Observed: 2.23 ft at 8:30AM May 02, 2024Observed: 2.21 ft at 8:36AM May 02, 2024Observed: 2.18 ft at 8:42AM May 02, 2024Observed: 2.12 ft at 8:48AM May 02, 2024Forecast: 1.2 ft 10:00AM May 02, 2024Forecast: 0.8 ft 11:00AM May 02, 2024Forecast: 0.9 ft 12:00PM May 02, 2024Forecast: 1.4 ft 1:00PM May 02, 2024Forecast: 2 ft 2:00PM May 02, 2024Forecast: 2.6 ft 3:00PM May 02, 2024Forecast: 3 ft 4:00PM May 02, 2024Forecast: 3.4 ft 5:00PM May 02, 2024Forecast: 3.3 ft 6:00PM May 02, 2024Forecast: 3.1 ft 7:00PM May 02, 2024Forecast: 2.7 ft 8:00PM May 02, 2024Forecast: 2.1 ft 9:00PM May 02, 2024Forecast: 1.6 ft 10:00PM May 02, 2024Forecast: 1.1 ft 11:00PM May 02, 2024Forecast: 0.9 ft 12:00AM May 03, 2024Forecast: 1.2 ft 1:00AM May 03, 2024Forecast: 1.8 ft 2:00AM May 03, 2024Forecast: 2.4 ft 3:00AM May 03, 2024Forecast: 2.8 ft 4:00AM May 03, 2024Forecast: 3.2 ft 5:00AM May 03, 2024Forecast: 3.4 ft 6:00AM May 03, 2024Forecast: 3.3 ft 7:00AM May 03, 2024Forecast: 2.8 ft 8:00AM May 03, 2024Forecast: 2.4 ft 9:00AM May 03, 2024Forecast: 1.8 ft 10:00AM May 03, 2024Forecast: 1.3 ft 11:00AM May 03, 2024Forecast: 1 ft 12:00PM May 03, 2024Forecast: 1 ft 1:00PM May 03, 2024Forecast: 1.4 ft 2:00PM May 03, 2024Forecast: 2.1 ft 3:00PM May 03, 2024Forecast: 2.7 ft 4:00PM May 03, 2024Forecast: 3.2 ft 5:00PM May 03, 2024Forecast: 3.4 ft 6:00PM May 03, 2024Forecast: 3.5 ft 7:00PM May 03, 2024Forecast: 3.2 ft 8:00PM May 03, 2024Forecast: 2.7 ft 9:00PM May 03, 2024Forecast: 2.2 ft 10:00PM May 03, 2024Forecast: 1.5 ft 11:00PM May 03, 2024Forecast: 0.9 ft 12:00AM May 04, 2024Forecast: 0.8 ft 1:00AM May 04, 2024Forecast: 1 ft 2:00AM May 04, 2024Forecast: 1.6 ft 3:00AM May 04, 2024Forecast: 2.3 ft 4:00AM May 04, 2024Forecast: 2.8 ft 5:00AM May 04, 2024Forecast: 3.1 ft 6:00AM May 04, 2024Forecast: 3.2 ft 7:00AM May 04, 2024Forecast: 3 ft 8:00AM May 04, 2024Forecast: 2.6 ft 9:00AM May 04, 2024Forecast: 2.1 ft 10:00AM May 04, 2024Forecast: 1.5 ft 11:00AM May 04, 2024Forecast: 0.9 ft 12:00PM May 04, 2024Forecast: 0.5 ft 1:00PM May 04, 2024Forecast: 0.8 ft 2:00PM May 04, 2024Forecast: 1.5 ft 3:00PM May 04, 2024Forecast: 2.3 ft 4:00PM May 04, 2024Forecast: 3 ft 5:00PM May 04, 2024Forecast: 3.5 ft 6:00PM May 04, 2024Highest Forecast: 3.7 ft 7:00PM May 04, 2024Highest Forecast: 3.7 ft 8:00PM May 04, 2024Forecast: 3.4 ft 9:00PM May 04, 2024Forecast: 2.9 ft 10:00PM May 04, 2024Forecast: 2.3 ft 11:00PM May 04, 2024Forecast: 1.5 ft 12:00AM May 05, 2024Forecast: 0.8 ft 1:00AM May 05, 2024Forecast: 0.6 ft 2:00AM May 05, 2024Forecast: 0.9 ft 3:00AM May 05, 2024Forecast: 1.6 ft 4:00AM May 05, 2024Forecast: 2.3 ft 5:00AM May 05, 2024Forecast: 2.8 ft 6:00AM May 05, 2024Forecast: 3.1 ft 7:00AM May 05, 2024Forecast: 3.3 ft 8:00AM May 05, 2024Forecast: 2.9 ft 9:00AM May 05, 2024NOAA National Ocean ServiceNLHC3(plotting HMIRG) Graph Created (9:16AM May 2, 2024)ObservedForecast (issued 2:29AM May 2)Latest observed value: 2.12 ft at 8:48 AM EDT 2-May-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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