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Hydrograph River at a Glance Download
Nantucket Harbor at Nantucket (IN MLLW) Tide Height (ft)Observed: 1.14 ft at 8:06PM May 15, 2021Observed: 1.1 ft at 8:12PM May 15, 2021Observed: 1.07 ft at 8:18PM May 15, 2021Observed: 1.03 ft at 8:24PM May 15, 2021Observed: 0.99 ft at 8:30PM May 15, 2021Observed: 0.97 ft at 8:36PM May 15, 2021Observed: 0.94 ft at 8:42PM May 15, 2021Observed: 0.93 ft at 8:48PM May 15, 2021Observed: 0.93 ft at 8:54PM May 15, 2021Observed: 0.92 ft at 9:00PM May 15, 2021Observed: 0.94 ft at 9:06PM May 15, 2021Observed: 0.96 ft at 9:12PM May 15, 2021Observed: 0.99 ft at 9:18PM May 15, 2021Observed: 1.02 ft at 9:24PM May 15, 2021Observed: 1.03 ft at 9:30PM May 15, 2021Observed: 1.04 ft at 9:36PM May 15, 2021Observed: 1.06 ft at 9:42PM May 15, 2021Observed: 1.07 ft at 9:48PM May 15, 2021Observed: 1.11 ft at 9:54PM May 15, 2021Observed: 1.1 ft at 10:00PM May 15, 2021Observed: 1.16 ft at 10:06PM May 15, 2021Observed: 1.22 ft at 10:12PM May 15, 2021Observed: 1.23 ft at 10:18PM May 15, 2021Observed: 1.26 ft at 10:24PM May 15, 2021Observed: 1.31 ft at 10:30PM May 15, 2021Observed: 1.35 ft at 10:36PM May 15, 2021Observed: 1.4 ft at 10:42PM May 15, 2021Observed: 1.45 ft at 10:48PM May 15, 2021Observed: 1.5 ft at 10:54PM May 15, 2021Observed: 1.55 ft at 11:00PM May 15, 2021Observed: 1.6 ft at 11:06PM May 15, 2021Observed: 1.66 ft at 11:12PM May 15, 2021Observed: 1.71 ft at 11:18PM May 15, 2021Observed: 1.76 ft at 11:24PM May 15, 2021Observed: 1.81 ft at 11:30PM May 15, 2021Observed: 1.87 ft at 11:36PM May 15, 2021Observed: 1.93 ft at 11:42PM May 15, 2021Observed: 1.98 ft at 11:48PM May 15, 2021Observed: 2.03 ft at 11:54PM May 15, 2021Observed: 2.08 ft at 12:00AM May 16, 2021Observed: 2.13 ft at 12:06AM May 16, 2021Observed: 2.18 ft at 12:12AM May 16, 2021Observed: 2.22 ft at 12:18AM May 16, 2021Observed: 2.28 ft at 12:24AM May 16, 2021Observed: 2.34 ft at 12:30AM May 16, 2021Observed: 2.4 ft at 12:36AM May 16, 2021Observed: 2.45 ft at 12:42AM May 16, 2021Observed: 2.5 ft at 12:48AM May 16, 2021Observed: 2.55 ft at 12:54AM May 16, 2021Observed: 2.62 ft at 1:00AM May 16, 2021Observed: 2.66 ft at 1:06AM May 16, 2021Observed: 2.7 ft at 1:12AM May 16, 2021Observed: 2.76 ft at 1:18AM May 16, 2021Observed: 2.8 ft at 1:24AM May 16, 2021Observed: 2.85 ft at 1:30AM May 16, 2021Observed: 2.9 ft at 1:36AM May 16, 2021Observed: 2.94 ft at 1:42AM May 16, 2021Observed: 2.98 ft at 1:48AM May 16, 2021Observed: 3.03 ft at 1:54AM May 16, 2021Observed: 3.08 ft at 2:00AM May 16, 2021Observed: 3.13 ft at 2:06AM May 16, 2021Observed: 3.18 ft at 2:12AM May 16, 2021Observed: 3.22 ft at 2:18AM May 16, 2021Observed: 3.25 ft at 2:24AM May 16, 2021Observed: 3.28 ft at 2:30AM May 16, 2021Observed: 3.32 ft at 2:36AM May 16, 2021Observed: 3.35 ft at 2:42AM May 16, 2021Observed: 3.38 ft at 2:48AM May 16, 2021Observed: 3.42 ft at 2:54AM May 16, 2021Observed: 3.44 ft at 3:00AM May 16, 2021Observed: 3.46 ft at 3:06AM May 16, 2021Highest Observation: 3.49 ft at 3:12AM May 16, 2021Highest Observation: 3.49 ft at 3:18AM May 16, 2021Highest Observation: 3.49 ft at 3:24AM May 16, 2021Highest Observation: 3.49 ft at 3:30AM May 16, 2021Highest Observation: 3.49 ft at 3:36AM May 16, 2021Highest Observation: 3.49 ft at 3:42AM May 16, 2021Highest Observation: 3.49 ft at 3:48AM May 16, 2021Highest Observation: 3.49 ft at 3:54AM May 16, 2021Observed: 3.48 ft at 4:00AM May 16, 2021Observed: 3.46 ft at 4:06AM May 16, 2021Observed: 3.43 ft at 4:12AM May 16, 2021Observed: 3.4 ft at 4:18AM May 16, 2021Observed: 3.37 ft at 4:24AM May 16, 2021Observed: 3.34 ft at 4:30AM May 16, 2021Observed: 3.31 ft at 4:36AM May 16, 2021Observed: 3.27 ft at 4:42AM May 16, 2021Observed: 3.24 ft at 4:48AM May 16, 2021Observed: 3.2 ft at 4:54AM May 16, 2021Observed: 3.16 ft at 5:00AM May 16, 2021Observed: 3.11 ft at 5:06AM May 16, 2021Observed: 3.05 ft at 5:12AM May 16, 2021Observed: 3 ft at 5:18AM May 16, 2021Observed: 2.94 ft at 5:24AM May 16, 2021Observed: 2.87 ft at 5:30AM May 16, 2021Observed: 2.81 ft at 5:36AM May 16, 2021Observed: 2.75 ft at 5:42AM May 16, 2021Observed: 2.69 ft at 5:48AM May 16, 2021Observed: 2.62 ft at 5:54AM May 16, 2021Observed: 2.55 ft at 6:00AM May 16, 2021Observed: 2.48 ft at 6:06AM May 16, 2021Observed: 2.41 ft at 6:12AM May 16, 2021Observed: 2.34 ft at 6:18AM May 16, 2021Observed: 2.27 ft at 6:24AM May 16, 2021Observed: 2.2 ft at 6:30AM May 16, 2021Observed: 2.13 ft at 6:36AM May 16, 2021Observed: 2.06 ft at 6:42AM May 16, 2021Observed: 1.99 ft at 6:48AM May 16, 2021Observed: 1.93 ft at 6:54AM May 16, 2021Observed: 1.85 ft at 7:00AM May 16, 2021Observed: 1.76 ft at 7:06AM May 16, 2021Observed: 1.68 ft at 7:12AM May 16, 2021Observed: 1.59 ft at 7:18AM May 16, 2021Observed: 1.51 ft at 7:24AM May 16, 2021Observed: 1.43 ft at 7:30AM May 16, 2021Observed: 1.35 ft at 7:36AM May 16, 2021Observed: 1.28 ft at 7:42AM May 16, 2021Observed: 1.2 ft at 7:48AM May 16, 2021Observed: 1.1 ft at 7:54AM May 16, 2021Observed: 1.02 ft at 8:00AM May 16, 2021Observed: 0.96 ft at 8:06AM May 16, 2021Observed: 0.88 ft at 8:12AM May 16, 2021Observed: 0.81 ft at 8:18AM May 16, 2021Observed: 0.73 ft at 8:24AM May 16, 2021Observed: 0.64 ft at 8:30AM May 16, 2021Observed: 0.59 ft at 8:36AM May 16, 2021Observed: 0.52 ft at 8:42AM May 16, 2021Observed: 0.47 ft at 8:48AM May 16, 2021Observed: 0.42 ft at 8:54AM May 16, 2021Observed: 0.38 ft at 9:00AM May 16, 2021Observed: 0.33 ft at 9:06AM May 16, 2021Observed: 0.3 ft at 9:12AM May 16, 2021Observed: 0.27 ft at 9:18AM May 16, 2021Observed: 0.23 ft at 9:24AM May 16, 2021Observed: 0.22 ft at 9:30AM May 16, 2021Observed: 0.22 ft at 9:36AM May 16, 2021Observed: 0.21 ft at 9:42AM May 16, 2021Observed: 0.21 ft at 9:48AM May 16, 2021Observed: 0.2 ft at 9:54AM May 16, 2021Observed: 0.2 ft at 10:00AM May 16, 2021Observed: 0.2 ft at 10:06AM May 16, 2021Observed: 0.19 ft at 10:12AM May 16, 2021Observed: 0.19 ft at 10:18AM May 16, 2021Observed: 0.23 ft at 10:24AM May 16, 2021Observed: 0.25 ft at 10:30AM May 16, 2021Observed: 0.27 ft at 10:36AM May 16, 2021Observed: 0.3 ft at 10:42AM May 16, 2021Observed: 0.34 ft at 10:48AM May 16, 2021Observed: 0.39 ft at 10:54AM May 16, 2021Observed: 0.41 ft at 11:00AM May 16, 2021Observed: 0.45 ft at 11:06AM May 16, 2021Observed: 0.5 ft at 11:12AM May 16, 2021Observed: 0.57 ft at 11:18AM May 16, 2021Observed: 0.6 ft at 11:24AM May 16, 2021Observed: 0.66 ft at 11:30AM May 16, 2021Observed: 0.69 ft at 11:36AM May 16, 2021Observed: 0.72 ft at 11:42AM May 16, 2021Observed: 0.77 ft at 11:48AM May 16, 2021Observed: 0.82 ft at 11:54AM May 16, 2021Observed: 0.87 ft at 12:00PM May 16, 2021Observed: 0.91 ft at 12:06PM May 16, 2021Observed: 0.96 ft at 12:12PM May 16, 2021Observed: 1.01 ft at 12:18PM May 16, 2021Observed: 1.06 ft at 12:24PM May 16, 2021Observed: 1.11 ft at 12:30PM May 16, 2021Observed: 1.14 ft at 12:36PM May 16, 2021Observed: 1.19 ft at 12:42PM May 16, 2021Observed: 1.23 ft at 12:48PM May 16, 2021Observed: 1.28 ft at 12:54PM May 16, 2021Observed: 1.34 ft at 1:00PM May 16, 2021Observed: 1.39 ft at 1:06PM May 16, 2021Observed: 1.43 ft at 1:12PM May 16, 2021Observed: 1.48 ft at 1:18PM May 16, 2021Observed: 1.54 ft at 1:24PM May 16, 2021Observed: 1.58 ft at 1:30PM May 16, 2021Observed: 1.63 ft at 1:36PM May 16, 2021Observed: 1.69 ft at 1:42PM May 16, 2021Observed: 1.76 ft at 1:48PM May 16, 2021Observed: 1.81 ft at 1:54PM May 16, 2021Observed: 1.86 ft at 2:00PM May 16, 2021Observed: 1.9 ft at 2:06PM May 16, 2021Observed: 1.95 ft at 2:12PM May 16, 2021Observed: 1.98 ft at 2:18PM May 16, 2021Observed: 2.01 ft at 2:24PM May 16, 2021Observed: 2.05 ft at 2:30PM May 16, 2021Observed: 2.1 ft at 2:36PM May 16, 2021Observed: 2.15 ft at 2:42PM May 16, 2021Observed: 2.2 ft at 2:48PM May 16, 2021Observed: 2.26 ft at 2:54PM May 16, 2021Observed: 2.31 ft at 3:00PM May 16, 2021Observed: 2.36 ft at 3:06PM May 16, 2021Observed: 2.4 ft at 3:12PM May 16, 2021Observed: 2.44 ft at 3:18PM May 16, 2021Observed: 2.47 ft at 3:24PM May 16, 2021Observed: 2.53 ft at 3:30PM May 16, 2021Observed: 2.58 ft at 3:36PM May 16, 2021Observed: 2.62 ft at 3:42PM May 16, 2021Observed: 2.64 ft at 3:48PM May 16, 2021Observed: 2.64 ft at 3:54PM May 16, 2021Observed: 2.63 ft at 4:00PM May 16, 2021Observed: 2.65 ft at 4:06PM May 16, 2021Observed: 2.65 ft at 4:12PM May 16, 2021Observed: 2.66 ft at 4:18PM May 16, 2021Observed: 2.69 ft at 4:24PM May 16, 2021Observed: 2.7 ft at 4:30PM May 16, 2021Observed: 2.69 ft at 4:36PM May 16, 2021Observed: 2.7 ft at 4:42PM May 16, 2021Observed: 2.72 ft at 4:48PM May 16, 2021Observed: 2.71 ft at 4:54PM May 16, 2021Observed: 2.68 ft at 5:00PM May 16, 2021Observed: 2.68 ft at 5:06PM May 16, 2021Observed: 2.64 ft at 5:12PM May 16, 2021Observed: 2.6 ft at 5:18PM May 16, 2021Observed: 2.59 ft at 5:24PM May 16, 2021Observed: 2.57 ft at 5:30PM May 16, 2021Observed: 2.55 ft at 5:36PM May 16, 2021Observed: 2.53 ft at 5:42PM May 16, 2021Observed: 2.49 ft at 5:48PM May 16, 2021Observed: 2.45 ft at 5:54PM May 16, 2021Observed: 2.42 ft at 6:00PM May 16, 2021Observed: 2.37 ft at 6:06PM May 16, 2021Observed: 2.33 ft at 6:12PM May 16, 2021Observed: 2.27 ft at 6:18PM May 16, 2021Observed: 2.23 ft at 6:24PM May 16, 2021Observed: 2.19 ft at 6:30PM May 16, 2021Observed: 2.15 ft at 6:36PM May 16, 2021Observed: 2.13 ft at 6:42PM May 16, 2021Observed: 2.06 ft at 6:48PM May 16, 2021Observed: 1.99 ft at 6:54PM May 16, 2021Observed: 1.94 ft at 7:00PM May 16, 2021Observed: 1.91 ft at 7:06PM May 16, 2021Observed: 1.85 ft at 7:12PM May 16, 2021Observed: 1.8 ft at 7:18PM May 16, 2021Observed: 1.75 ft at 7:24PM May 16, 2021Observed: 1.71 ft at 7:30PM May 16, 2021Observed: 1.66 ft at 7:36PM May 16, 2021Observed: 1.61 ft at 7:42PM May 16, 2021Observed: 1.44 ft at 8:00PM May 16, 2021Observed: 1.38 ft at 8:06PM May 16, 2021Observed: 1.34 ft at 8:12PM May 16, 2021Observed: 1.28 ft at 8:18PM May 16, 2021Observed: 1.25 ft at 8:24PM May 16, 2021Observed: 1.23 ft at 8:30PM May 16, 2021Observed: 1.19 ft at 8:36PM May 16, 2021Observed: 1.16 ft at 8:42PM May 16, 2021Observed: 1.12 ft at 8:48PM May 16, 2021Observed: 1.07 ft at 8:54PM May 16, 2021Observed: 1.04 ft at 9:00PM May 16, 2021Observed: 1.01 ft at 9:06PM May 16, 2021Observed: 0.97 ft at 9:12PM May 16, 2021Observed: 0.96 ft at 9:18PM May 16, 2021Observed: 0.94 ft at 9:24PM May 16, 2021Observed: 0.92 ft at 9:30PM May 16, 2021Observed: 0.92 ft at 9:36PM May 16, 2021Observed: 0.91 ft at 9:42PM May 16, 2021Observed: 0.92 ft at 9:48PM May 16, 2021Observed: 0.93 ft at 9:54PM May 16, 2021Observed: 0.94 ft at 10:00PM May 16, 2021Observed: 0.98 ft at 10:06PM May 16, 2021Observed: 0.97 ft at 10:12PM May 16, 2021Observed: 0.97 ft at 10:18PM May 16, 2021Observed: 0.97 ft at 10:24PM May 16, 2021Observed: 0.99 ft at 10:30PM May 16, 2021Observed: 1.05 ft at 10:36PM May 16, 2021Observed: 1.09 ft at 10:42PM May 16, 2021Observed: 1.12 ft at 10:48PM May 16, 2021Observed: 1.15 ft at 10:54PM May 16, 2021Observed: 1.19 ft at 11:00PM May 16, 2021Observed: 1.22 ft at 11:06PM May 16, 2021Observed: 1.26 ft at 11:12PM May 16, 2021Observed: 1.29 ft at 11:18PM May 16, 2021Observed: 1.33 ft at 11:24PM May 16, 2021Observed: 1.38 ft at 11:30PM May 16, 2021Observed: 1.43 ft at 11:36PM May 16, 2021Observed: 1.48 ft at 11:42PM May 16, 2021Observed: 1.54 ft at 11:48PM May 16, 2021Observed: 1.59 ft at 11:54PM May 16, 2021Observed: 1.64 ft at 12:00AM May 17, 2021Observed: 1.69 ft at 12:06AM May 17, 2021Observed: 1.74 ft at 12:12AM May 17, 2021Observed: 1.78 ft at 12:18AM May 17, 2021Observed: 1.84 ft at 12:24AM May 17, 2021Observed: 1.9 ft at 12:30AM May 17, 2021Observed: 1.96 ft at 12:36AM May 17, 2021Observed: 2.01 ft at 12:42AM May 17, 2021Observed: 2.06 ft at 12:48AM May 17, 2021Observed: 2.11 ft at 12:54AM May 17, 2021Observed: 2.16 ft at 1:00AM May 17, 2021Observed: 2.21 ft at 1:06AM May 17, 2021Observed: 2.26 ft at 1:12AM May 17, 2021Observed: 2.31 ft at 1:18AM May 17, 2021Observed: 2.37 ft at 1:24AM May 17, 2021Observed: 2.42 ft at 1:30AM May 17, 2021Observed: 2.48 ft at 1:36AM May 17, 2021Observed: 2.53 ft at 1:42AM May 17, 2021Observed: 2.58 ft at 1:48AM May 17, 2021Observed: 2.63 ft at 1:54AM May 17, 2021Observed: 2.69 ft at 2:00AM May 17, 2021Observed: 2.74 ft at 2:06AM May 17, 2021Observed: 2.79 ft at 2:12AM May 17, 2021Observed: 2.83 ft at 2:18AM May 17, 2021Observed: 2.88 ft at 2:24AM May 17, 2021Observed: 2.94 ft at 2:30AM May 17, 2021Observed: 2.99 ft at 2:36AM May 17, 2021Observed: 3.04 ft at 2:42AM May 17, 2021Observed: 3.08 ft at 2:48AM May 17, 2021Observed: 3.12 ft at 2:54AM May 17, 2021Observed: 3.16 ft at 3:00AM May 17, 2021Observed: 3.21 ft at 3:06AM May 17, 2021Observed: 3.24 ft at 3:12AM May 17, 2021Observed: 3.28 ft at 3:18AM May 17, 2021Observed: 3.29 ft at 3:24AM May 17, 2021Observed: 3.33 ft at 3:30AM May 17, 2021Observed: 3.37 ft at 3:36AM May 17, 2021Observed: 3.39 ft at 3:42AM May 17, 2021Observed: 3.41 ft at 3:48AM May 17, 2021Observed: 3.44 ft at 3:54AM May 17, 2021Observed: 3.46 ft at 4:00AM May 17, 2021Observed: 3.46 ft at 4:06AM May 17, 2021Observed: 3.47 ft at 4:12AM May 17, 2021Observed: 3.46 ft at 4:18AM May 17, 2021Observed: 3.46 ft at 4:24AM May 17, 2021Observed: 3.46 ft at 4:30AM May 17, 2021Observed: 3.43 ft at 4:36AM May 17, 2021Observed: 3.4 ft at 4:42AM May 17, 2021Observed: 3.38 ft at 4:48AM May 17, 2021Observed: 3.38 ft at 4:54AM May 17, 2021Observed: 3.37 ft at 5:00AM May 17, 2021Observed: 3.34 ft at 5:06AM May 17, 2021Observed: 3.32 ft at 5:12AM May 17, 2021Observed: 3.28 ft at 5:18AM May 17, 2021Observed: 3.25 ft at 5:24AM May 17, 2021Observed: 3.23 ft at 5:30AM May 17, 2021Observed: 3.17 ft at 5:36AM May 17, 2021Observed: 3.12 ft at 5:42AM May 17, 2021Observed: 3.07 ft at 5:48AM May 17, 2021Observed: 3.02 ft at 5:54AM May 17, 2021Observed: 2.97 ft at 6:00AM May 17, 2021Observed: 2.92 ft at 6:06AM May 17, 2021Observed: 2.86 ft at 6:12AM May 17, 2021Observed: 2.8 ft at 6:18AM May 17, 2021Observed: 2.73 ft at 6:24AM May 17, 2021Observed: 2.67 ft at 6:30AM May 17, 2021Observed: 2.6 ft at 6:36AM May 17, 2021Observed: 2.53 ft at 6:42AM May 17, 2021Observed: 2.47 ft at 6:48AM May 17, 2021Observed: 2.41 ft at 6:54AM May 17, 2021Observed: 2.35 ft at 7:00AM May 17, 2021Observed: 2.27 ft at 7:06AM May 17, 2021Observed: 2.21 ft at 7:12AM May 17, 2021Observed: 2.14 ft at 7:18AM May 17, 2021Observed: 2.07 ft at 7:24AM May 17, 2021Observed: 2 ft at 7:30AM May 17, 2021Observed: 1.93 ft at 7:36AM May 17, 2021Observed: 1.87 ft at 7:42AM May 17, 2021Observed: 1.77 ft at 7:48AM May 17, 2021Observed: 1.7 ft at 7:54AM May 17, 2021Observed: 1.63 ft at 8:00AM May 17, 2021Observed: 1.56 ft at 8:06AM May 17, 2021Observed: 1.47 ft at 8:12AM May 17, 2021Observed: 1.39 ft at 8:18AM May 17, 2021Observed: 1.33 ft at 8:24AM May 17, 2021Observed: 1.23 ft at 8:30AM May 17, 2021Observed: 1.15 ft at 8:36AM May 17, 2021Observed: 1.06 ft at 8:42AM May 17, 2021Observed: 1 ft at 8:48AM May 17, 2021Observed: 0.93 ft at 8:54AM May 17, 2021Observed: 0.85 ft at 9:00AM May 17, 2021Observed: 0.79 ft at 9:06AM May 17, 2021Observed: 0.73 ft at 9:12AM May 17, 2021Observed: 0.68 ft at 9:18AM May 17, 2021Observed: 0.62 ft at 9:24AM May 17, 2021Observed: 0.55 ft at 9:30AM May 17, 2021Observed: 0.49 ft at 9:36AM May 17, 2021Observed: 0.43 ft at 9:42AM May 17, 2021Observed: 0.37 ft at 9:48AM May 17, 2021Observed: 0.33 ft at 9:54AM May 17, 2021Observed: 0.31 ft at 10:00AM May 17, 2021Observed: 0.29 ft at 10:06AM May 17, 2021Observed: 0.28 ft at 10:12AM May 17, 2021Observed: 0.28 ft at 10:18AM May 17, 2021Observed: 0.29 ft at 10:24AM May 17, 2021Observed: 0.29 ft at 10:30AM May 17, 2021Observed: 0.29 ft at 10:36AM May 17, 2021Observed: 0.29 ft at 10:42AM May 17, 2021Observed: 0.29 ft at 10:48AM May 17, 2021Observed: 0.27 ft at 10:54AM May 17, 2021Observed: 0.27 ft at 11:00AM May 17, 2021Observed: 0.28 ft at 11:06AM May 17, 2021Observed: 0.31 ft at 11:12AM May 17, 2021Observed: 0.35 ft at 11:18AM May 17, 2021Observed: 0.39 ft at 11:24AM May 17, 2021Observed: 0.39 ft at 11:30AM May 17, 2021Observed: 0.43 ft at 11:36AM May 17, 2021Observed: 0.48 ft at 11:42AM May 17, 2021Observed: 0.5 ft at 11:48AM May 17, 2021Observed: 0.54 ft at 11:54AM May 17, 2021Observed: 0.58 ft at 12:00PM May 17, 2021Observed: 0.63 ft at 12:06PM May 17, 2021Observed: 0.66 ft at 12:12PM May 17, 2021Observed: 0.69 ft at 12:18PM May 17, 2021Observed: 0.73 ft at 12:24PM May 17, 2021Observed: 0.78 ft at 12:30PM May 17, 2021Observed: 0.82 ft at 12:36PM May 17, 2021Observed: 0.86 ft at 12:42PM May 17, 2021Observed: 0.9 ft at 12:48PM May 17, 2021Observed: 0.95 ft at 12:54PM May 17, 2021Observed: 0.99 ft at 1:00PM May 17, 2021Observed: 1.03 ft at 1:06PM May 17, 2021Observed: 1.08 ft at 1:12PM May 17, 2021Observed: 1.12 ft at 1:18PM May 17, 2021Observed: 1.17 ft at 1:24PM May 17, 2021Observed: 1.21 ft at 1:30PM May 17, 2021Observed: 1.26 ft at 1:36PM May 17, 2021Observed: 1.3 ft at 1:42PM May 17, 2021Observed: 1.35 ft at 1:48PM May 17, 2021Observed: 1.39 ft at 1:54PM May 17, 2021Observed: 1.42 ft at 2:00PM May 17, 2021Observed: 1.48 ft at 2:06PM May 17, 2021Observed: 1.53 ft at 2:12PM May 17, 2021Observed: 1.56 ft at 2:18PM May 17, 2021Observed: 1.61 ft at 2:24PM May 17, 2021Observed: 1.65 ft at 2:30PM May 17, 2021Observed: 1.72 ft at 2:36PM May 17, 2021Observed: 1.77 ft at 2:42PM May 17, 2021Observed: 1.82 ft at 2:48PM May 17, 2021Observed: 1.87 ft at 2:54PM May 17, 2021Observed: 1.91 ft at 3:00PM May 17, 2021Observed: 1.95 ft at 3:06PM May 17, 2021Observed: 2 ft at 3:12PM May 17, 2021Observed: 2.05 ft at 3:18PM May 17, 2021Observed: 2.09 ft at 3:24PM May 17, 2021Observed: 2.14 ft at 3:30PM May 17, 2021Observed: 2.18 ft at 3:36PM May 17, 2021Observed: 2.22 ft at 3:42PM May 17, 2021Observed: 2.26 ft at 3:48PM May 17, 2021Observed: 2.29 ft at 3:54PM May 17, 2021Observed: 2.33 ft at 4:00PM May 17, 2021Observed: 2.39 ft at 4:06PM May 17, 2021Observed: 2.43 ft at 4:12PM May 17, 2021Observed: 2.48 ft at 4:18PM May 17, 2021Observed: 2.51 ft at 4:24PM May 17, 2021Observed: 2.54 ft at 4:30PM May 17, 2021Observed: 2.55 ft at 4:36PM May 17, 2021Observed: 2.57 ft at 4:42PM May 17, 2021Observed: 2.58 ft at 4:48PM May 17, 2021Observed: 2.58 ft at 4:54PM May 17, 2021Observed: 2.57 ft at 5:00PM May 17, 2021Observed: 2.57 ft at 5:06PM May 17, 2021Observed: 2.59 ft at 5:12PM May 17, 2021Observed: 2.6 ft at 5:18PM May 17, 2021Observed: 2.63 ft at 5:24PM May 17, 2021Observed: 2.64 ft at 5:30PM May 17, 2021Observed: 2.63 ft at 5:36PM May 17, 2021Observed: 2.62 ft at 5:42PM May 17, 2021Observed: 2.61 ft at 5:48PM May 17, 2021Observed: 2.6 ft at 5:54PM May 17, 2021Observed: 2.57 ft at 6:00PM May 17, 2021Observed: 2.54 ft at 6:06PM May 17, 2021Observed: 2.51 ft at 6:12PM May 17, 2021Observed: 2.47 ft at 6:18PM May 17, 2021Observed: 2.45 ft at 6:24PM May 17, 2021Observed: 2.43 ft at 6:30PM May 17, 2021Observed: 2.41 ft at 6:36PM May 17, 2021Observed: 2.38 ft at 6:42PM May 17, 2021Observed: 2.34 ft at 6:48PM May 17, 2021Observed: 2.29 ft at 6:54PM May 17, 2021Observed: 2.24 ft at 7:00PM May 17, 2021Observed: 2.2 ft at 7:06PM May 17, 2021Observed: 2.15 ft at 7:12PM May 17, 2021Observed: 2.1 ft at 7:18PM May 17, 2021Observed: 2.04 ft at 7:24PM May 17, 2021Observed: 1.99 ft at 7:30PM May 17, 2021Observed: 1.95 ft at 7:36PM May 17, 2021Observed: 1.91 ft at 7:42PM May 17, 2021Observed: 1.77 ft at 8:00PM May 17, 2021Observed: 1.71 ft at 8:06PM May 17, 2021Observed: 1.66 ft at 8:12PM May 17, 2021Observed: 1.62 ft at 8:18PM May 17, 2021Observed: 1.57 ft at 8:24PM May 17, 2021Observed: 1.52 ft at 8:30PM May 17, 2021Observed: 1.46 ft at 8:36PM May 17, 2021Observed: 1.41 ft at 8:42PM May 17, 2021Observed: 1.35 ft at 8:48PM May 17, 2021Observed: 1.3 ft at 8:54PM May 17, 2021Observed: 1.25 ft at 9:00PM May 17, 2021Observed: 1.2 ft at 9:06PM May 17, 2021Observed: 1.15 ft at 9:12PM May 17, 2021Observed: 1.11 ft at 9:18PM May 17, 2021Observed: 1.07 ft at 9:24PM May 17, 2021Observed: 1.03 ft at 9:30PM May 17, 2021Observed: 1 ft at 9:36PM May 17, 2021Observed: 0.96 ft at 9:42PM May 17, 2021Observed: 0.92 ft at 9:48PM May 17, 2021Observed: 0.88 ft at 9:54PM May 17, 2021Observed: 0.85 ft at 10:00PM May 17, 2021Observed: 0.83 ft at 10:06PM May 17, 2021Observed: 0.83 ft at 10:12PM May 17, 2021Observed: 0.8 ft at 10:18PM May 17, 2021Observed: 0.81 ft at 10:24PM May 17, 2021Observed: 0.83 ft at 10:30PM May 17, 2021Observed: 0.82 ft at 10:36PM May 17, 2021Observed: 0.82 ft at 10:42PM May 17, 2021Observed: 0.83 ft at 10:48PM May 17, 2021Observed: 0.83 ft at 10:54PM May 17, 2021Observed: 0.84 ft at 11:00PM May 17, 2021Observed: 0.86 ft at 11:06PM May 17, 2021Observed: 0.89 ft at 11:12PM May 17, 2021Observed: 0.91 ft at 11:18PM May 17, 2021Observed: 0.94 ft at 11:24PM May 17, 2021Observed: 0.98 ft at 11:30PM May 17, 2021Observed: 1.02 ft at 11:36PM May 17, 2021Observed: 1.07 ft at 11:42PM May 17, 2021Observed: 1.1 ft at 11:48PM May 17, 2021Observed: 1.15 ft at 11:54PM May 17, 2021Observed: 1.19 ft at 12:00AM May 18, 2021Observed: 1.21 ft at 12:06AM May 18, 2021Observed: 1.25 ft at 12:12AM May 18, 2021Observed: 1.29 ft at 12:18AM May 18, 2021Observed: 1.34 ft at 12:24AM May 18, 2021Observed: 1.39 ft at 12:30AM May 18, 2021Observed: 1.45 ft at 12:36AM May 18, 2021Observed: 1.5 ft at 12:42AM May 18, 2021Observed: 1.55 ft at 12:48AM May 18, 2021Observed: 1.6 ft at 12:54AM May 18, 2021Observed: 1.66 ft at 1:00AM May 18, 2021Observed: 1.71 ft at 1:06AM May 18, 2021Observed: 1.75 ft at 1:12AM May 18, 2021Observed: 1.8 ft at 1:18AM May 18, 2021Observed: 1.86 ft at 1:24AM May 18, 2021Observed: 1.91 ft at 1:30AM May 18, 2021Observed: 1.96 ft at 1:36AM May 18, 2021Observed: 2.01 ft at 1:42AM May 18, 2021Observed: 2.06 ft at 1:48AM May 18, 2021Observed: 2.1 ft at 1:54AM May 18, 2021Observed: 2.15 ft at 2:00AM May 18, 2021Observed: 2.2 ft at 2:06AM May 18, 2021Observed: 2.25 ft at 2:12AM May 18, 2021Observed: 2.3 ft at 2:18AM May 18, 2021Observed: 2.35 ft at 2:24AM May 18, 2021Observed: 2.39 ft at 2:30AM May 18, 2021Observed: 2.44 ft at 2:36AM May 18, 2021Observed: 2.49 ft at 2:42AM May 18, 2021Observed: 2.54 ft at 2:48AM May 18, 2021Observed: 2.58 ft at 2:54AM May 18, 2021Observed: 2.62 ft at 3:00AM May 18, 2021Observed: 2.65 ft at 3:06AM May 18, 2021Observed: 2.69 ft at 3:12AM May 18, 2021Observed: 2.75 ft at 3:18AM May 18, 2021Observed: 2.81 ft at 3:24AM May 18, 2021Observed: 2.86 ft at 3:30AM May 18, 2021Observed: 2.9 ft at 3:36AM May 18, 2021Observed: 2.94 ft at 3:42AM May 18, 2021Observed: 2.97 ft at 3:48AM May 18, 2021Observed: 3 ft at 3:54AM May 18, 2021Observed: 3.05 ft at 4:00AM May 18, 2021Observed: 3.09 ft at 4:06AM May 18, 2021Observed: 3.12 ft at 4:12AM May 18, 2021Observed: 3.14 ft at 4:18AM May 18, 2021Observed: 3.16 ft at 4:24AM May 18, 2021Observed: 3.16 ft at 4:30AM May 18, 2021Observed: 3.18 ft at 4:36AM May 18, 2021Observed: 3.2 ft at 4:42AM May 18, 2021Observed: 3.22 ft at 4:48AM May 18, 2021Observed: 3.22 ft at 4:54AM May 18, 2021Observed: 3.24 ft at 5:00AM May 18, 2021Observed: 3.27 ft at 5:06AM May 18, 2021Observed: 3.27 ft at 5:12AM May 18, 2021Observed: 3.26 ft at 5:18AM May 18, 2021Observed: 3.25 ft at 5:24AM May 18, 2021Observed: 3.23 ft at 5:30AM May 18, 2021Observed: 3.21 ft at 5:36AM May 18, 2021Observed: 3.23 ft at 5:42AM May 18, 2021Observed: 3.21 ft at 5:48AM May 18, 2021Observed: 3.18 ft at 5:54AM May 18, 2021Observed: 3.16 ft at 6:00AM May 18, 2021Observed: 3.14 ft at 6:06AM May 18, 2021Observed: 3.08 ft at 6:12AM May 18, 2021Observed: 3.04 ft at 6:18AM May 18, 2021Observed: 3 ft at 6:24AM May 18, 2021Observed: 2.95 ft at 6:30AM May 18, 2021Observed: 2.91 ft at 6:36AM May 18, 2021Observed: 2.86 ft at 6:42AM May 18, 2021Observed: 2.82 ft at 6:48AM May 18, 2021Observed: 2.79 ft at 6:54AM May 18, 2021Observed: 2.75 ft at 7:00AM May 18, 2021Observed: 2.7 ft at 7:06AM May 18, 2021Observed: 2.65 ft at 7:12AM May 18, 2021Observed: 2.6 ft at 7:18AM May 18, 2021Observed: 2.53 ft at 7:24AM May 18, 2021Observed: 2.45 ft at 7:30AM May 18, 2021Observed: 2.39 ft at 7:36AM May 18, 2021Observed: 2.31 ft at 7:42AM May 18, 2021Observed: 2.26 ft at 7:48AM May 18, 2021Observed: 2.19 ft at 7:54AM May 18, 2021Observed: 2.13 ft at 8:00AM May 18, 2021Observed: 2.06 ft at 8:06AM May 18, 2021Observed: 1.99 ft at 8:12AM May 18, 2021Observed: 1.92 ft at 8:18AM May 18, 2021Observed: 1.85 ft at 8:24AM May 18, 2021Observed: 1.78 ft at 8:30AM May 18, 2021Observed: 1.72 ft at 8:36AM May 18, 2021Observed: 1.64 ft at 8:42AM May 18, 2021Observed: 1.55 ft at 8:48AM May 18, 2021Observed: 1.47 ft at 8:54AM May 18, 2021Observed: 1.38 ft at 9:00AM May 18, 2021Observed: 1.3 ft at 9:06AM May 18, 2021Observed: 1.23 ft at 9:12AM May 18, 2021Observed: 1.14 ft at 9:18AM May 18, 2021Observed: 1.06 ft at 9:24AM May 18, 2021Observed: 0.98 ft at 9:30AM May 18, 2021Observed: 0.91 ft at 9:36AM May 18, 2021Observed: 0.83 ft at 9:42AM May 18, 2021Observed: 0.75 ft at 9:48AM May 18, 2021Observed: 0.68 ft at 9:54AM May 18, 2021Observed: 0.62 ft at 10:00AM May 18, 2021Observed: 0.56 ft at 10:06AM May 18, 2021Observed: 0.51 ft at 10:12AM May 18, 2021Observed: 0.46 ft at 10:18AM May 18, 2021Observed: 0.41 ft at 10:24AM May 18, 2021Observed: 0.37 ft at 10:30AM May 18, 2021Observed: 0.33 ft at 10:36AM May 18, 2021Observed: 0.29 ft at 10:42AM May 18, 2021Observed: 0.25 ft at 10:48AM May 18, 2021Observed: 0.22 ft at 10:54AM May 18, 2021Observed: 0.17 ft at 11:00AM May 18, 2021Observed: 0.16 ft at 11:06AM May 18, 2021Observed: 0.14 ft at 11:12AM May 18, 2021Observed: 0.16 ft at 11:18AM May 18, 2021Observed: 0.14 ft at 11:24AM May 18, 2021Observed: 0.13 ft at 11:30AM May 18, 2021Observed: 0.12 ft at 11:36AM May 18, 2021Observed: 0.14 ft at 11:42AM May 18, 2021Observed: 0.14 ft at 11:48AM May 18, 2021Observed: 0.15 ft at 11:54AM May 18, 2021Observed: 0.19 ft at 12:00PM May 18, 2021Observed: 0.21 ft at 12:06PM May 18, 2021Observed: 0.21 ft at 12:12PM May 18, 2021Observed: 0.23 ft at 12:18PM May 18, 2021Observed: 0.27 ft at 12:24PM May 18, 2021Observed: 0.31 ft at 12:30PM May 18, 2021Observed: 0.32 ft at 12:36PM May 18, 2021Observed: 0.36 ft at 12:42PM May 18, 2021Observed: 0.41 ft at 12:48PM May 18, 2021Observed: 0.45 ft at 12:54PM May 18, 2021Observed: 0.48 ft at 1:00PM May 18, 2021Observed: 0.53 ft at 1:06PM May 18, 2021Observed: 0.59 ft at 1:12PM May 18, 2021Observed: 0.63 ft at 1:18PM May 18, 2021Observed: 0.7 ft at 1:24PM May 18, 2021Observed: 0.71 ft at 1:30PM May 18, 2021Observed: 0.75 ft at 1:36PM May 18, 2021Observed: 0.8 ft at 1:42PM May 18, 2021Observed: 0.84 ft at 1:48PM May 18, 2021Observed: 0.9 ft at 1:54PM May 18, 2021Observed: 0.95 ft at 2:00PM May 18, 2021Observed: 1.02 ft at 2:06PM May 18, 2021Observed: 1.05 ft at 2:12PM May 18, 2021Observed: 1.1 ft at 2:18PM May 18, 2021Observed: 1.14 ft at 2:24PM May 18, 2021Observed: 1.16 ft at 2:30PM May 18, 2021Observed: 1.2 ft at 2:36PM May 18, 2021Observed: 1.27 ft at 2:42PM May 18, 2021Observed: 1.34 ft at 2:48PM May 18, 2021Observed: 1.39 ft at 2:54PM May 18, 2021Observed: 1.45 ft at 3:00PM May 18, 2021Observed: 1.49 ft at 3:06PM May 18, 2021Observed: 1.54 ft at 3:12PM May 18, 2021Observed: 1.59 ft at 3:18PM May 18, 2021Observed: 1.64 ft at 3:24PM May 18, 2021Observed: 1.7 ft at 3:30PM May 18, 2021Observed: 1.76 ft at 3:36PM May 18, 2021Observed: 1.81 ft at 3:42PM May 18, 2021Observed: 1.87 ft at 3:48PM May 18, 2021Observed: 1.91 ft at 3:54PM May 18, 2021Observed: 1.97 ft at 4:00PM May 18, 2021Observed: 2 ft at 4:06PM May 18, 2021Observed: 2.06 ft at 4:12PM May 18, 2021Observed: 2.14 ft at 4:18PM May 18, 2021Observed: 2.17 ft at 4:24PM May 18, 2021Observed: 2.21 ft at 4:30PM May 18, 2021Observed: 2.23 ft at 4:36PM May 18, 2021Observed: 2.27 ft at 4:42PM May 18, 2021Observed: 2.31 ft at 4:48PM May 18, 2021Observed: 2.34 ft at 4:54PM May 18, 2021Observed: 2.4 ft at 5:00PM May 18, 2021Observed: 2.44 ft at 5:06PM May 18, 2021Observed: 2.49 ft at 5:12PM May 18, 2021Observed: 2.54 ft at 5:18PM May 18, 2021Observed: 2.58 ft at 5:24PM May 18, 2021Observed: 2.62 ft at 5:30PM May 18, 2021Observed: 2.65 ft at 5:36PM May 18, 2021Observed: 2.67 ft at 5:42PM May 18, 2021Observed: 2.66 ft at 5:48PM May 18, 2021Observed: 2.66 ft at 5:54PM May 18, 2021Observed: 2.66 ft at 6:00PM May 18, 2021Observed: 2.68 ft at 6:06PM May 18, 2021Observed: 2.69 ft at 6:12PM May 18, 2021Observed: 2.7 ft at 6:18PM May 18, 2021Observed: 2.7 ft at 6:24PM May 18, 2021Observed: 2.7 ft at 6:30PM May 18, 2021Observed: 2.7 ft at 6:36PM May 18, 2021Observed: 2.7 ft at 6:42PM May 18, 2021Observed: 2.71 ft at 6:48PM May 18, 2021Observed: 2.69 ft at 6:54PM May 18, 2021Observed: 2.69 ft at 7:00PM May 18, 2021Observed: 2.67 ft at 7:06PM May 18, 2021Observed: 2.63 ft at 7:12PM May 18, 2021Observed: 2.6 ft at 7:18PM May 18, 2021Observed: 2.57 ft at 7:24PM May 18, 2021Observed: 2.54 ft at 7:30PM May 18, 2021Observed: 2.49 ft at 7:36PM May 18, 2021Forecast: 1.2 ft 9:00PM May 18, 2021Forecast: 0.7 ft 10:00PM May 18, 2021Forecast: 0.3 ft 11:00PM May 18, 2021Forecast: 0.3 ft 12:00AM May 19, 2021Forecast: 0.7 ft 1:00AM May 19, 2021Forecast: 1.2 ft 2:00AM May 19, 2021Forecast: 1.9 ft 3:00AM May 19, 2021Forecast: 2.3 ft 4:00AM May 19, 2021Forecast: 2.7 ft 5:00AM May 19, 2021Forecast: 2.9 ft 6:00AM May 19, 2021Forecast: 2.8 ft 7:00AM May 19, 2021Forecast: 2.4 ft 8:00AM May 19, 2021Forecast: 1.8 ft 9:00AM May 19, 2021Forecast: 1.1 ft 10:00AM May 19, 2021Forecast: 0.6 ft 11:00AM May 19, 2021Forecast: 0.2 ft 12:00PM May 19, 2021Forecast: 0.3 ft 1:00PM May 19, 2021Forecast: 0.6 ft 2:00PM May 19, 2021Forecast: 1.1 ft 3:00PM May 19, 2021Forecast: 1.6 ft 4:00PM May 19, 2021Forecast: 2.1 ft 5:00PM May 19, 2021Forecast: 2.5 ft 6:00PM May 19, 2021Forecast: 2.6 ft 7:00PM May 19, 2021Forecast: 2.6 ft 8:00PM May 19, 2021Forecast: 2.1 ft 9:00PM May 19, 2021Forecast: 1.5 ft 10:00PM May 19, 2021Forecast: 1 ft 11:00PM May 19, 2021Forecast: 0.6 ft 12:00AM May 20, 2021Forecast: 0.6 ft 1:00AM May 20, 2021Forecast: 1 ft 2:00AM May 20, 2021Forecast: 1.5 ft 3:00AM May 20, 2021Forecast: 2 ft 4:00AM May 20, 2021Forecast: 2.5 ft 5:00AM May 20, 2021Forecast: 2.9 ft 6:00AM May 20, 2021Highest Forecast: 3.1 ft 7:00AM May 20, 2021Forecast: 2.9 ft 8:00AM May 20, 2021Forecast: 2.4 ft 9:00AM May 20, 2021Forecast: 1.8 ft 10:00AM May 20, 2021Forecast: 1.1 ft 11:00AM May 20, 2021Forecast: 0.5 ft 12:00PM May 20, 2021Forecast: 0.2 ft 1:00PM May 20, 2021Forecast: 0.3 ft 2:00PM May 20, 2021Forecast: 0.7 ft 3:00PM May 20, 2021Forecast: 1.2 ft 4:00PM May 20, 2021Forecast: 1.7 ft 5:00PM May 20, 2021Forecast: 2.2 ft 6:00PM May 20, 2021Forecast: 2.6 ft 7:00PM May 20, 2021Forecast: 2.7 ft 8:00PM May 20, 2021Forecast: 2.4 ft 9:00PM May 20, 2021Forecast: 1.9 ft 10:00PM May 20, 2021Forecast: 1.2 ft 11:00PM May 20, 2021Forecast: 0.7 ft 12:00AM May 21, 2021Forecast: 0.3 ft 1:00AM May 21, 2021Forecast: 0.1 ft 2:00AM May 21, 2021Forecast: 0.5 ft 3:00AM May 21, 2021Forecast: 1.1 ft 4:00AM May 21, 2021Forecast: 1.7 ft 5:00AM May 21, 2021Forecast: 2.2 ft 6:00AM May 21, 2021Forecast: 2.6 ft 7:00AM May 21, 2021Forecast: 2.8 ft 8:00AM May 21, 2021Forecast: 2.6 ft 9:00AM May 21, 2021Forecast: 2.1 ft 10:00AM May 21, 2021Forecast: 1.4 ft 11:00AM May 21, 2021Forecast: 0.7 ft 12:00PM May 21, 2021Forecast: 0.1 ft 1:00PM May 21, 2021Forecast: -0.2 ft 2:00PM May 21, 2021Forecast: 0 ft 3:00PM May 21, 2021Data courtesy of NOAA National Ocean ServiceNTKM3(plotting HMIRG) Graph Created (8:01PM May 18, 2021)ObservedForecast (issued 4:29PM May 18)Latest observed value: 2.49 ft at 7:36 PM EDT 18-May-2021. Flood Stage is 5 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Please refer to our Coastal Hazard Message for specific information regarding Coastal Flood Watches, Warnings and Advisories. Actual impacts from any coastal flooding event may vary due to factors such as rainfall, wave action, and the number of tide cycles during which there is an onshore flow. During tropical cyclones, please refer here for additional storm surge information.

NOTE: During a Tropical Storm or Hurricane Watch or Warning, inundation mapping provided by the National Hurricane Center (go to the web site and select the storm of interest) reflects a reasonable worst case scenario. The forecast above is the total water forecast that is most likely to occur.

NOTE: Forecasts for the Nantucket Harbor at Nantucket (IN MLLW) are issued routinely year-round.

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

Return to Area Map
Flood Categories (in feet)
Major Flood Stage: 8
Moderate Flood Stage: 6.5
Flood Stage: 5
Action Stage: 4
Low Stage (in feet): -9999

Historic Crests
(1) 7.87 ft on 10/30/1991
(2) 7.36 ft on 01/04/2018
(3) 7.21 ft on 01/27/2015
(4) 6.70 ft on 03/03/2018
(5) 6.67 ft on 12/12/1992
(6) 6.62 ft on 03/02/2018
(7) 6.57 ft on 01/03/2014
(8) 6.34 ft on 01/02/1987
(9) 6.34 ft on 01/30/2018
(10) 6.20 ft on 01/23/2005
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 5.23 ft on 02/03/2021 (P)
(2) 5.64 ft on 02/02/2021 (P)
(3) 6.13 ft on 12/17/2020 (P)
(4) 5.02 ft on 12/14/2020 (P)
(5) 5.11 ft on 10/30/2020 (P)
(6) 5.06 ft on 07/04/2020 (P)
(7) 5.04 ft on 06/07/2020 (P)
(8) 5.03 ft on 06/04/2020 (P)
(9) 5.11 ft on 05/09/2020 (P)
(10) 5.05 ft on 05/08/2020 (P)
Show More Recent Crests

(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.

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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.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
10 Major, life threatening flooding is expected in portions of Nantucket. Road closures and some evacuations can be expected. Flooding impacts the Nantucket Harbor area as well as the Atlantic Avenue area along the south side of the Island. Large surf will also result in beach erosion in vulnerable areas.
8 Flooding of low lying areas on Nantucket is likely. Flooding will impact both the Nantucket Harbor region as well as the Atlantic Avenue area on the south side of the Island. Moderate to major flooding of Washington, Easton and Easy Streets are expected. Some localized evacuations may be necessary.
7 Expect moderate coastal flooding on Nantucket. Flooding is expected on low lying coastal roads including portions of Washington, Easton and Easy Streets.
6 Moderate flooding of Nantucket Harbor is expected. Some low lying coastal roads including Easy and Easton Streets will experience flooding during the time nearest high tide.
5 Minor coastal flooding begins on Easy Street in Nantucket.
Photos
(1) Nantucket Tidal Station
About This Location Collapse

Latitude: 41.285300° N, Longitude: 70.096400° 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 Not Available Not Available 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 -1.77 3.23 Older USGS topographic maps, MSL benchmarks
Other Not Available 5.0 MLLW
Additional Information Collapse
Nantucket Harbor gage data and forecasts are in feet Mean Lower Low Water (MLLW).
Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
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
Boston / Norton Weather Forecast Office
46 Commerce Way
Norton, MA 02766
(508) 622-3250
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Page last modified: 2-Nov-2020 7:30 PM
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