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Hydrograph River at a Glance Download
Nantucket Harbor at Nantucket Tide Height (ft)Observed: 3.88 ft at 11:36PM Aug 18, 2017Observed: 3.81 ft at 11:42PM Aug 18, 2017Observed: 3.72 ft at 11:48PM Aug 18, 2017Observed: 3.66 ft at 11:54PM Aug 18, 2017Observed: 3.61 ft at 12:00AM Aug 19, 2017Observed: 3.52 ft at 12:06AM Aug 19, 2017Observed: 3.44 ft at 12:12AM Aug 19, 2017Observed: 3.33 ft at 12:18AM Aug 19, 2017Observed: 3.24 ft at 12:24AM Aug 19, 2017Observed: 3.14 ft at 12:30AM Aug 19, 2017Observed: 3.06 ft at 12:36AM Aug 19, 2017Observed: 2.98 ft at 12:42AM Aug 19, 2017Observed: 2.9 ft at 12:48AM Aug 19, 2017Observed: 2.81 ft at 12:54AM Aug 19, 2017Observed: 1.77 ft at 1:00AM Aug 19, 2017Observed: 1.65 ft at 2:06AM Aug 19, 2017Observed: 1.53 ft at 2:12AM Aug 19, 2017Observed: 1.41 ft at 2:18AM Aug 19, 2017Observed: 1.33 ft at 2:24AM Aug 19, 2017Observed: 1.23 ft at 2:30AM Aug 19, 2017Observed: 1.15 ft at 2:36AM Aug 19, 2017Observed: 1.08 ft at 2:42AM Aug 19, 2017Observed: 1.04 ft at 2:48AM Aug 19, 2017Observed: 1 ft at 2:54AM Aug 19, 2017Observed: 0.93 ft at 3:00AM Aug 19, 2017Observed: 0.88 ft at 3:06AM Aug 19, 2017Observed: 0.8 ft at 3:12AM Aug 19, 2017Observed: 0.69 ft at 3:18AM Aug 19, 2017Observed: 0.61 ft at 3:24AM Aug 19, 2017Observed: 0.55 ft at 3:30AM Aug 19, 2017Observed: 0.5 ft at 3:36AM Aug 19, 2017Observed: 0.49 ft at 3:42AM Aug 19, 2017Observed: 0.48 ft at 3:48AM Aug 19, 2017Observed: 0.47 ft at 3:54AM Aug 19, 2017Observed: 0.44 ft at 4:00AM Aug 19, 2017Observed: 0.45 ft at 4:06AM Aug 19, 2017Observed: 0.47 ft at 4:12AM Aug 19, 2017Observed: 0.53 ft at 4:18AM Aug 19, 2017Observed: 0.56 ft at 4:24AM Aug 19, 2017Observed: 0.56 ft at 4:30AM Aug 19, 2017Observed: 0.56 ft at 4:36AM Aug 19, 2017Observed: 0.56 ft at 4:42AM Aug 19, 2017Observed: 0.53 ft at 4:48AM Aug 19, 2017Observed: 0.57 ft at 4:54AM Aug 19, 2017Observed: 0.61 ft at 5:00AM Aug 19, 2017Observed: 0.64 ft at 5:06AM Aug 19, 2017Observed: 0.71 ft at 5:12AM Aug 19, 2017Observed: 0.75 ft at 5:18AM Aug 19, 2017Observed: 0.79 ft at 5:24AM Aug 19, 2017Observed: 0.84 ft at 5:30AM Aug 19, 2017Observed: 0.89 ft at 5:36AM Aug 19, 2017Observed: 0.97 ft at 5:42AM Aug 19, 2017Observed: 1.02 ft at 5:48AM Aug 19, 2017Observed: 1.09 ft at 5:54AM Aug 19, 2017Observed: 1.18 ft at 6:00AM Aug 19, 2017Observed: 1.26 ft at 6:06AM Aug 19, 2017Observed: 1.31 ft at 6:12AM Aug 19, 2017Observed: 1.37 ft at 6:18AM Aug 19, 2017Observed: 1.42 ft at 6:24AM Aug 19, 2017Observed: 1.47 ft at 6:30AM Aug 19, 2017Observed: 1.55 ft at 6:36AM Aug 19, 2017Observed: 1.62 ft at 6:42AM Aug 19, 2017Observed: 1.68 ft at 6:48AM Aug 19, 2017Observed: 1.73 ft at 6:54AM Aug 19, 2017Observed: 1.8 ft at 7:00AM Aug 19, 2017Observed: 1.86 ft at 7:06AM Aug 19, 2017Observed: 1.91 ft at 7:12AM Aug 19, 2017Observed: 1.97 ft at 7:18AM Aug 19, 2017Observed: 2.03 ft at 7:24AM Aug 19, 2017Observed: 2.12 ft at 7:30AM Aug 19, 2017Observed: 2.17 ft at 7:36AM Aug 19, 2017Observed: 2.22 ft at 7:42AM Aug 19, 2017Observed: 2.28 ft at 7:48AM Aug 19, 2017Observed: 2.37 ft at 7:54AM Aug 19, 2017Observed: 2.44 ft at 8:00AM Aug 19, 2017Observed: 2.49 ft at 8:06AM Aug 19, 2017Observed: 2.55 ft at 8:12AM Aug 19, 2017Observed: 2.6 ft at 8:18AM Aug 19, 2017Observed: 2.65 ft at 8:24AM Aug 19, 2017Observed: 2.74 ft at 8:30AM Aug 19, 2017Observed: 2.81 ft at 8:36AM Aug 19, 2017Observed: 2.89 ft at 8:42AM Aug 19, 2017Observed: 2.98 ft at 8:48AM Aug 19, 2017Observed: 3.06 ft at 8:54AM Aug 19, 2017Observed: 3.58 ft at 9:00AM Aug 19, 2017Observed: 3.67 ft at 10:00AM Aug 19, 2017Observed: 3.66 ft at 11:06AM Aug 19, 2017Observed: 3.63 ft at 11:12AM Aug 19, 2017Observed: 3.62 ft at 11:18AM Aug 19, 2017Observed: 3.56 ft at 11:24AM Aug 19, 2017Observed: 3.55 ft at 11:30AM Aug 19, 2017Observed: 3.52 ft at 11:36AM Aug 19, 2017Observed: 3.46 ft at 11:42AM Aug 19, 2017Observed: 3.43 ft at 11:48AM Aug 19, 2017Observed: 3.38 ft at 11:54AM Aug 19, 2017Observed: 3.32 ft at 12:00PM Aug 19, 2017Observed: 3.29 ft at 12:06PM Aug 19, 2017Observed: 3.23 ft at 12:12PM Aug 19, 2017Observed: 3.18 ft at 12:18PM Aug 19, 2017Observed: 3.11 ft at 12:24PM Aug 19, 2017Observed: 3.03 ft at 12:30PM Aug 19, 2017Observed: 2.94 ft at 12:36PM Aug 19, 2017Observed: 2.85 ft at 12:42PM Aug 19, 2017Observed: 2.79 ft at 12:48PM Aug 19, 2017Observed: 2.74 ft at 12:54PM Aug 19, 2017Observed: 2.65 ft at 1:00PM Aug 19, 2017Observed: 2.59 ft at 1:06PM Aug 19, 2017Observed: 2.52 ft at 1:12PM Aug 19, 2017Observed: 2.44 ft at 1:18PM Aug 19, 2017Observed: 2.39 ft at 1:24PM Aug 19, 2017Observed: 2.32 ft at 1:30PM Aug 19, 2017Observed: 2.23 ft at 1:36PM Aug 19, 2017Observed: 2.15 ft at 1:42PM Aug 19, 2017Observed: 2.08 ft at 1:48PM Aug 19, 2017Observed: 1.98 ft at 1:54PM Aug 19, 2017Observed: 1.18 ft at 2:00PM Aug 19, 2017Observed: 1.11 ft at 3:06PM Aug 19, 2017Observed: 1.06 ft at 3:12PM Aug 19, 2017Observed: 1 ft at 3:18PM Aug 19, 2017Observed: 0.94 ft at 3:24PM Aug 19, 2017Observed: 0.89 ft at 3:30PM Aug 19, 2017Observed: 0.85 ft at 3:36PM Aug 19, 2017Observed: 0.82 ft at 3:42PM Aug 19, 2017Observed: 0.79 ft at 3:48PM Aug 19, 2017Observed: 0.77 ft at 3:54PM Aug 19, 2017Observed: 0.78 ft at 4:00PM Aug 19, 2017Observed: 0.78 ft at 4:06PM Aug 19, 2017Observed: 0.8 ft at 4:12PM Aug 19, 2017Observed: 0.8 ft at 4:18PM Aug 19, 2017Observed: 0.78 ft at 4:24PM Aug 19, 2017Observed: 0.79 ft at 4:30PM Aug 19, 2017Observed: 0.84 ft at 4:36PM Aug 19, 2017Observed: 0.9 ft at 4:42PM Aug 19, 2017Observed: 0.93 ft at 4:48PM Aug 19, 2017Observed: 0.96 ft at 4:54PM Aug 19, 2017Observed: 1.01 ft at 5:00PM Aug 19, 2017Observed: 1.05 ft at 5:06PM Aug 19, 2017Observed: 1.11 ft at 5:12PM Aug 19, 2017Observed: 1.18 ft at 5:18PM Aug 19, 2017Observed: 1.22 ft at 5:24PM Aug 19, 2017Observed: 1.28 ft at 5:30PM Aug 19, 2017Observed: 1.35 ft at 5:36PM Aug 19, 2017Observed: 1.41 ft at 5:42PM Aug 19, 2017Observed: 1.48 ft at 5:48PM Aug 19, 2017Observed: 1.54 ft at 5:54PM Aug 19, 2017Observed: 1.61 ft at 6:00PM Aug 19, 2017Observed: 1.69 ft at 6:06PM Aug 19, 2017Observed: 1.76 ft at 6:12PM Aug 19, 2017Observed: 1.83 ft at 6:18PM Aug 19, 2017Observed: 1.91 ft at 6:24PM Aug 19, 2017Observed: 1.98 ft at 6:30PM Aug 19, 2017Observed: 2.04 ft at 6:36PM Aug 19, 2017Observed: 2.1 ft at 6:42PM Aug 19, 2017Observed: 2.18 ft at 6:48PM Aug 19, 2017Observed: 2.26 ft at 6:54PM Aug 19, 2017Observed: 2.34 ft at 7:00PM Aug 19, 2017Observed: 2.42 ft at 7:06PM Aug 19, 2017Observed: 2.5 ft at 7:12PM Aug 19, 2017Observed: 2.57 ft at 7:18PM Aug 19, 2017Observed: 2.66 ft at 7:24PM Aug 19, 2017Observed: 2.73 ft at 7:30PM Aug 19, 2017Observed: 2.8 ft at 7:36PM Aug 19, 2017Observed: 2.88 ft at 7:42PM Aug 19, 2017Observed: 3.13 ft at 8:00PM Aug 19, 2017Observed: 3.21 ft at 8:06PM Aug 19, 2017Observed: 3.29 ft at 8:12PM Aug 19, 2017Observed: 3.36 ft at 8:18PM Aug 19, 2017Observed: 3.45 ft at 8:24PM Aug 19, 2017Observed: 3.53 ft at 8:30PM Aug 19, 2017Observed: 3.63 ft at 8:36PM Aug 19, 2017Observed: 3.7 ft at 8:42PM Aug 19, 2017Observed: 3.79 ft at 8:48PM Aug 19, 2017Observed: 3.88 ft at 8:54PM Aug 19, 2017Observed: 3.95 ft at 9:00PM Aug 19, 2017Observed: 4.02 ft at 9:06PM Aug 19, 2017Observed: 4.1 ft at 9:12PM Aug 19, 2017Observed: 4.15 ft at 9:18PM Aug 19, 2017Observed: 4.23 ft at 9:24PM Aug 19, 2017Observed: 4.3 ft at 9:30PM Aug 19, 2017Observed: 4.36 ft at 9:36PM Aug 19, 2017Observed: 4.43 ft at 9:42PM Aug 19, 2017Observed: 4.49 ft at 9:48PM Aug 19, 2017Observed: 4.56 ft at 9:54PM Aug 19, 2017Observed: 4.62 ft at 10:00PM Aug 19, 2017Observed: 4.65 ft at 10:06PM Aug 19, 2017Observed: 4.68 ft at 10:12PM Aug 19, 2017Observed: 4.7 ft at 10:18PM Aug 19, 2017Observed: 4.75 ft at 10:24PM Aug 19, 2017Observed: 4.77 ft at 10:30PM Aug 19, 2017Observed: 4.78 ft at 10:36PM Aug 19, 2017Observed: 4.8 ft at 10:42PM Aug 19, 2017Highest Observation: 4.81 ft at 10:48PM Aug 19, 2017Observed: 4.8 ft at 10:54PM Aug 19, 2017Observed: 4.8 ft at 11:00PM Aug 19, 2017Observed: 4.78 ft at 11:06PM Aug 19, 2017Observed: 4.76 ft at 11:12PM Aug 19, 2017Observed: 4.75 ft at 11:18PM Aug 19, 2017Observed: 4.74 ft at 11:24PM Aug 19, 2017Observed: 4.72 ft at 11:30PM Aug 19, 2017Observed: 4.68 ft at 11:36PM Aug 19, 2017Observed: 4.63 ft at 11:42PM Aug 19, 2017Observed: 4.57 ft at 11:48PM Aug 19, 2017Observed: 4.5 ft at 11:54PM Aug 19, 2017Observed: 4.44 ft at 12:00AM Aug 20, 2017Observed: 4.38 ft at 12:06AM Aug 20, 2017Observed: 4.31 ft at 12:12AM Aug 20, 2017Observed: 4.26 ft at 12:18AM Aug 20, 2017Observed: 4.19 ft at 12:24AM Aug 20, 2017Observed: 4.11 ft at 12:30AM Aug 20, 2017Observed: 4.03 ft at 12:36AM Aug 20, 2017Observed: 3.96 ft at 12:42AM Aug 20, 2017Observed: 3.88 ft at 12:48AM Aug 20, 2017Observed: 3.8 ft at 12:54AM Aug 20, 2017Observed: 3.71 ft at 1:00AM Aug 20, 2017Observed: 3.63 ft at 1:06AM Aug 20, 2017Observed: 3.55 ft at 1:12AM Aug 20, 2017Observed: 3.45 ft at 1:18AM Aug 20, 2017Observed: 3.36 ft at 1:24AM Aug 20, 2017Observed: 3.26 ft at 1:30AM Aug 20, 2017Observed: 3.16 ft at 1:36AM Aug 20, 2017Observed: 3.07 ft at 1:42AM Aug 20, 2017Observed: 2.97 ft at 1:48AM Aug 20, 2017Observed: 2.86 ft at 1:54AM Aug 20, 2017Observed: 2.77 ft at 2:00AM Aug 20, 2017Observed: 2.66 ft at 2:06AM Aug 20, 2017Observed: 2.57 ft at 2:12AM Aug 20, 2017Observed: 2.47 ft at 2:18AM Aug 20, 2017Observed: 2.37 ft at 2:24AM Aug 20, 2017Observed: 2.27 ft at 2:30AM Aug 20, 2017Observed: 2.16 ft at 2:36AM Aug 20, 2017Observed: 2.04 ft at 2:42AM Aug 20, 2017Observed: 1.93 ft at 2:48AM Aug 20, 2017Observed: 1.82 ft at 2:54AM Aug 20, 2017Observed: 1.7 ft at 3:00AM Aug 20, 2017Observed: 1.59 ft at 3:06AM Aug 20, 2017Observed: 1.49 ft at 3:12AM Aug 20, 2017Observed: 1.38 ft at 3:18AM Aug 20, 2017Observed: 1.26 ft at 3:24AM Aug 20, 2017Observed: 1.16 ft at 3:30AM Aug 20, 2017Observed: 1.06 ft at 3:36AM Aug 20, 2017Observed: 0.96 ft at 3:42AM Aug 20, 2017Observed: 0.87 ft at 3:48AM Aug 20, 2017Observed: 0.78 ft at 3:54AM Aug 20, 2017Observed: 0.69 ft at 4:00AM Aug 20, 2017Observed: 0.62 ft at 4:06AM Aug 20, 2017Observed: 0.54 ft at 4:12AM Aug 20, 2017Observed: 0.48 ft at 4:18AM Aug 20, 2017Observed: 0.44 ft at 4:24AM Aug 20, 2017Observed: 0.4 ft at 4:30AM Aug 20, 2017Observed: 0.37 ft at 4:36AM Aug 20, 2017Observed: 0.34 ft at 4:42AM Aug 20, 2017Observed: 0.32 ft at 4:48AM Aug 20, 2017Observed: 0.32 ft at 4:54AM Aug 20, 2017Observed: 0.31 ft at 5:00AM Aug 20, 2017Observed: 0.28 ft at 5:06AM Aug 20, 2017Observed: 0.27 ft at 5:12AM Aug 20, 2017Observed: 0.26 ft at 5:18AM Aug 20, 2017Observed: 0.27 ft at 5:24AM Aug 20, 2017Observed: 0.3 ft at 5:30AM Aug 20, 2017Observed: 0.33 ft at 5:36AM Aug 20, 2017Observed: 0.39 ft at 5:42AM Aug 20, 2017Observed: 0.45 ft at 5:48AM Aug 20, 2017Observed: 0.5 ft at 5:54AM Aug 20, 2017Observed: 0.57 ft at 6:00AM Aug 20, 2017Observed: 0.66 ft at 6:06AM Aug 20, 2017Observed: 0.72 ft at 6:12AM Aug 20, 2017Observed: 0.77 ft at 6:18AM Aug 20, 2017Observed: 0.85 ft at 6:24AM Aug 20, 2017Observed: 0.92 ft at 6:30AM Aug 20, 2017Observed: 0.97 ft at 6:36AM Aug 20, 2017Observed: 1.04 ft at 6:42AM Aug 20, 2017Observed: 1.1 ft at 6:48AM Aug 20, 2017Observed: 1.16 ft at 6:54AM Aug 20, 2017Observed: 1.22 ft at 7:00AM Aug 20, 2017Observed: 1.29 ft at 7:06AM Aug 20, 2017Observed: 1.35 ft at 7:12AM Aug 20, 2017Observed: 1.42 ft at 7:18AM Aug 20, 2017Observed: 1.48 ft at 7:24AM Aug 20, 2017Observed: 1.55 ft at 7:30AM Aug 20, 2017Observed: 1.61 ft at 7:36AM Aug 20, 2017Observed: 1.68 ft at 7:42AM Aug 20, 2017Observed: 1.77 ft at 7:48AM Aug 20, 2017Observed: 1.84 ft at 7:54AM Aug 20, 2017Observed: 1.91 ft at 8:00AM Aug 20, 2017Observed: 1.97 ft at 8:06AM Aug 20, 2017Observed: 2.01 ft at 8:12AM Aug 20, 2017Observed: 2.09 ft at 8:18AM Aug 20, 2017Observed: 2.15 ft at 8:24AM Aug 20, 2017Observed: 2.22 ft at 8:30AM Aug 20, 2017Observed: 2.3 ft at 8:36AM Aug 20, 2017Observed: 2.4 ft at 8:42AM Aug 20, 2017Observed: 2.44 ft at 8:48AM Aug 20, 2017Observed: 2.52 ft at 8:54AM Aug 20, 2017Observed: 3.2 ft at 9:00AM Aug 20, 2017Observed: 3.27 ft at 10:06AM Aug 20, 2017Observed: 3.33 ft at 10:12AM Aug 20, 2017Observed: 3.38 ft at 10:18AM Aug 20, 2017Observed: 3.45 ft at 10:24AM Aug 20, 2017Observed: 3.5 ft at 10:30AM Aug 20, 2017Observed: 3.53 ft at 10:36AM Aug 20, 2017Observed: 3.58 ft at 10:42AM Aug 20, 2017Observed: 3.62 ft at 10:48AM Aug 20, 2017Observed: 3.63 ft at 10:54AM Aug 20, 2017Observed: 3.66 ft at 11:00AM Aug 20, 2017Observed: 3.69 ft at 11:06AM Aug 20, 2017Observed: 3.7 ft at 11:12AM Aug 20, 2017Observed: 3.72 ft at 11:18AM Aug 20, 2017Observed: 3.74 ft at 11:24AM Aug 20, 2017Observed: 3.75 ft at 11:30AM Aug 20, 2017Observed: 3.75 ft at 11:36AM Aug 20, 2017Observed: 3.73 ft at 11:42AM Aug 20, 2017Observed: 3.72 ft at 11:48AM Aug 20, 2017Observed: 3.71 ft at 11:54AM Aug 20, 2017Observed: 3.68 ft at 12:00PM Aug 20, 2017Observed: 3.68 ft at 12:06PM Aug 20, 2017Observed: 3.67 ft at 12:12PM Aug 20, 2017Observed: 3.65 ft at 12:18PM Aug 20, 2017Observed: 3.62 ft at 12:24PM Aug 20, 2017Observed: 3.57 ft at 12:30PM Aug 20, 2017Observed: 3.52 ft at 12:36PM Aug 20, 2017Observed: 3.46 ft at 12:42PM Aug 20, 2017Observed: 3.4 ft at 12:48PM Aug 20, 2017Observed: 3.34 ft at 12:54PM Aug 20, 2017Observed: 2.57 ft at 1:00PM Aug 20, 2017Observed: 2.48 ft at 2:06PM Aug 20, 2017Observed: 2.4 ft at 2:12PM Aug 20, 2017Observed: 2.31 ft at 2:18PM Aug 20, 2017Observed: 2.22 ft at 2:24PM Aug 20, 2017Observed: 2.15 ft at 2:30PM Aug 20, 2017Observed: 2.12 ft at 2:36PM Aug 20, 2017Observed: 2.03 ft at 2:42PM Aug 20, 2017Observed: 1.93 ft at 2:48PM Aug 20, 2017Observed: 1.85 ft at 2:54PM Aug 20, 2017Observed: 1.77 ft at 3:00PM Aug 20, 2017Observed: 1.68 ft at 3:06PM Aug 20, 2017Observed: 1.6 ft at 3:12PM Aug 20, 2017Observed: 1.52 ft at 3:18PM Aug 20, 2017Observed: 1.43 ft at 3:24PM Aug 20, 2017Observed: 1.35 ft at 3:30PM Aug 20, 2017Observed: 1.27 ft at 3:36PM Aug 20, 2017Observed: 1.18 ft at 3:42PM Aug 20, 2017Observed: 1.1 ft at 3:48PM Aug 20, 2017Observed: 1.01 ft at 3:54PM Aug 20, 2017Observed: 0.92 ft at 4:00PM Aug 20, 2017Observed: 0.86 ft at 4:06PM Aug 20, 2017Observed: 0.78 ft at 4:12PM Aug 20, 2017Observed: 0.71 ft at 4:18PM Aug 20, 2017Observed: 0.66 ft at 4:24PM Aug 20, 2017Observed: 0.6 ft at 4:30PM Aug 20, 2017Observed: 0.56 ft at 4:36PM Aug 20, 2017Observed: 0.54 ft at 4:42PM Aug 20, 2017Observed: 0.52 ft at 4:48PM Aug 20, 2017Observed: 0.47 ft at 4:54PM Aug 20, 2017Observed: 0.49 ft at 5:00PM Aug 20, 2017Observed: 0.49 ft at 5:06PM Aug 20, 2017Observed: 0.47 ft at 5:12PM Aug 20, 2017Observed: 0.48 ft at 5:18PM Aug 20, 2017Observed: 0.46 ft at 5:24PM Aug 20, 2017Observed: 0.47 ft at 5:30PM Aug 20, 2017Observed: 0.5 ft at 5:36PM Aug 20, 2017Observed: 0.51 ft at 5:42PM Aug 20, 2017Observed: 0.56 ft at 5:48PM Aug 20, 2017Observed: 0.6 ft at 5:54PM Aug 20, 2017Observed: 0.65 ft at 6:00PM Aug 20, 2017Observed: 0.7 ft at 6:06PM Aug 20, 2017Observed: 0.75 ft at 6:12PM Aug 20, 2017Observed: 0.81 ft at 6:18PM Aug 20, 2017Observed: 0.89 ft at 6:24PM Aug 20, 2017Observed: 0.95 ft at 6:30PM Aug 20, 2017Observed: 1.01 ft at 6:36PM Aug 20, 2017Observed: 1.08 ft at 6:42PM Aug 20, 2017Observed: 1.15 ft at 6:48PM Aug 20, 2017Observed: 1.2 ft at 6:54PM Aug 20, 2017Observed: 1.27 ft at 7:00PM Aug 20, 2017Observed: 1.33 ft at 7:06PM Aug 20, 2017Observed: 1.4 ft at 7:12PM Aug 20, 2017Observed: 1.48 ft at 7:18PM Aug 20, 2017Observed: 1.56 ft at 7:24PM Aug 20, 2017Observed: 1.64 ft at 7:30PM Aug 20, 2017Observed: 1.72 ft at 7:36PM Aug 20, 2017Observed: 1.8 ft at 7:42PM Aug 20, 2017Observed: 1.9 ft at 7:48PM Aug 20, 2017Observed: 2.84 ft at 8:00PM Aug 20, 2017Observed: 3.65 ft at 9:00PM Aug 20, 2017Observed: 4.27 ft at 10:00PM Aug 20, 2017Observed: 4.3 ft at 11:06PM Aug 20, 2017Observed: 4.33 ft at 11:12PM Aug 20, 2017Observed: 4.38 ft at 11:18PM Aug 20, 2017Observed: 4.4 ft at 11:24PM Aug 20, 2017Observed: 4.42 ft at 11:30PM Aug 20, 2017Observed: 4.42 ft at 11:36PM Aug 20, 2017Observed: 4.43 ft at 11:42PM Aug 20, 2017Observed: 4.43 ft at 11:48PM Aug 20, 2017Observed: 4.43 ft at 11:54PM Aug 20, 2017Observed: 4.43 ft at 12:00AM Aug 21, 2017Observed: 4.42 ft at 12:06AM Aug 21, 2017Observed: 4.42 ft at 12:12AM Aug 21, 2017Observed: 4.41 ft at 12:18AM Aug 21, 2017Observed: 4.37 ft at 12:24AM Aug 21, 2017Observed: 4.33 ft at 12:30AM Aug 21, 2017Observed: 4.29 ft at 12:36AM Aug 21, 2017Observed: 4.25 ft at 12:42AM Aug 21, 2017Observed: 4.2 ft at 12:48AM Aug 21, 2017Observed: 4.14 ft at 12:54AM Aug 21, 2017Observed: 4.09 ft at 1:00AM Aug 21, 2017Observed: 4.04 ft at 1:06AM Aug 21, 2017Observed: 3.98 ft at 1:12AM Aug 21, 2017Observed: 3.91 ft at 1:18AM Aug 21, 2017Observed: 3.83 ft at 1:24AM Aug 21, 2017Observed: 3.76 ft at 1:30AM Aug 21, 2017Observed: 3.7 ft at 1:36AM Aug 21, 2017Observed: 3.61 ft at 1:42AM Aug 21, 2017Observed: 3.53 ft at 1:48AM Aug 21, 2017Observed: 3.45 ft at 1:54AM Aug 21, 2017Observed: 3.37 ft at 2:00AM Aug 21, 2017Observed: 3.29 ft at 2:06AM Aug 21, 2017Observed: 3.2 ft at 2:12AM Aug 21, 2017Observed: 3.1 ft at 2:18AM Aug 21, 2017Observed: 3.02 ft at 2:24AM Aug 21, 2017Observed: 2.92 ft at 2:30AM Aug 21, 2017Observed: 2.82 ft at 2:36AM Aug 21, 2017Observed: 2.72 ft at 2:42AM Aug 21, 2017Observed: 2.62 ft at 2:48AM Aug 21, 2017Observed: 2.52 ft at 2:54AM Aug 21, 2017Observed: 2.41 ft at 3:00AM Aug 21, 2017Observed: 2.32 ft at 3:06AM Aug 21, 2017Observed: 2.21 ft at 3:12AM Aug 21, 2017Observed: 2.11 ft at 3:18AM Aug 21, 2017Observed: 2 ft at 3:24AM Aug 21, 2017Observed: 1.89 ft at 3:30AM Aug 21, 2017Observed: 1.79 ft at 3:36AM Aug 21, 2017Observed: 1.67 ft at 3:42AM Aug 21, 2017Observed: 1.56 ft at 3:48AM Aug 21, 2017Observed: 1.45 ft at 3:54AM Aug 21, 2017Observed: 1.34 ft at 4:00AM Aug 21, 2017Observed: 1.21 ft at 4:06AM Aug 21, 2017Observed: 1.1 ft at 4:12AM Aug 21, 2017Observed: 0.99 ft at 4:18AM Aug 21, 2017Observed: 0.87 ft at 4:24AM Aug 21, 2017Observed: 0.77 ft at 4:30AM Aug 21, 2017Observed: 0.67 ft at 4:36AM Aug 21, 2017Observed: 0.56 ft at 4:42AM Aug 21, 2017Observed: 0.47 ft at 4:48AM Aug 21, 2017Observed: 0.38 ft at 4:54AM Aug 21, 2017Observed: 0.3 ft at 5:00AM Aug 21, 2017Observed: 0.22 ft at 5:06AM Aug 21, 2017Observed: 0.15 ft at 5:12AM Aug 21, 2017Observed: 0.1 ft at 5:18AM Aug 21, 2017Observed: 0.06 ft at 5:24AM Aug 21, 2017Observed: 0.02 ft at 5:30AM Aug 21, 2017Observed: -0.01 ft at 5:36AM Aug 21, 2017Observed: -0.03 ft at 5:42AM Aug 21, 2017Observed: -0.04 ft at 5:48AM Aug 21, 2017Observed: -0.03 ft at 5:54AM Aug 21, 2017Observed: -0.04 ft at 6:00AM Aug 21, 2017Observed: -0.05 ft at 6:06AM Aug 21, 2017Observed: -0.07 ft at 6:12AM Aug 21, 2017Observed: -0.06 ft at 6:18AM Aug 21, 2017Observed: -0.05 ft at 6:24AM Aug 21, 2017Observed: -0.05 ft at 6:30AM Aug 21, 2017Observed: 0 ft at 6:36AM Aug 21, 2017Observed: 0.06 ft at 6:42AM Aug 21, 2017Observed: 0.11 ft at 6:48AM Aug 21, 2017Observed: 0.17 ft at 6:54AM Aug 21, 2017Observed: 0.24 ft at 7:00AM Aug 21, 2017Observed: 0.3 ft at 7:06AM Aug 21, 2017Observed: 0.37 ft at 7:12AM Aug 21, 2017Observed: 0.44 ft at 7:18AM Aug 21, 2017Observed: 0.51 ft at 7:24AM Aug 21, 2017Observed: 0.61 ft at 7:30AM Aug 21, 2017Observed: 0.72 ft at 7:36AM Aug 21, 2017Observed: 0.8 ft at 7:42AM Aug 21, 2017Observed: 0.85 ft at 7:48AM Aug 21, 2017Observed: 0.91 ft at 7:54AM Aug 21, 2017Observed: 0.99 ft at 8:00AM Aug 21, 2017Observed: 1.05 ft at 8:06AM Aug 21, 2017Observed: 1.11 ft at 8:12AM Aug 21, 2017Observed: 1.18 ft at 8:18AM Aug 21, 2017Observed: 1.24 ft at 8:24AM Aug 21, 2017Observed: 1.32 ft at 8:30AM Aug 21, 2017Observed: 1.4 ft at 8:36AM Aug 21, 2017Observed: 1.44 ft at 8:42AM Aug 21, 2017Observed: 1.51 ft at 8:48AM Aug 21, 2017Observed: 1.58 ft at 8:54AM Aug 21, 2017Observed: 1.66 ft at 9:00AM Aug 21, 2017Observed: 1.74 ft at 9:06AM Aug 21, 2017Observed: 1.81 ft at 9:12AM Aug 21, 2017Observed: 1.88 ft at 9:18AM Aug 21, 2017Observed: 1.96 ft at 9:24AM Aug 21, 2017Observed: 2.03 ft at 9:30AM Aug 21, 2017Observed: 2.11 ft at 9:36AM Aug 21, 2017Observed: 2.19 ft at 9:42AM Aug 21, 2017Observed: 2.27 ft at 9:48AM Aug 21, 2017Observed: 2.34 ft at 9:54AM Aug 21, 2017Observed: 2.41 ft at 10:00AM Aug 21, 2017Observed: 2.49 ft at 10:06AM Aug 21, 2017Observed: 2.54 ft at 10:12AM Aug 21, 2017Observed: 2.6 ft at 10:18AM Aug 21, 2017Observed: 2.69 ft at 10:24AM Aug 21, 2017Observed: 2.74 ft at 10:30AM Aug 21, 2017Observed: 2.81 ft at 10:36AM Aug 21, 2017Observed: 2.88 ft at 10:42AM Aug 21, 2017Observed: 2.93 ft at 10:48AM Aug 21, 2017Observed: 2.99 ft at 10:54AM Aug 21, 2017Observed: 3.05 ft at 11:00AM Aug 21, 2017Observed: 3.1 ft at 11:06AM Aug 21, 2017Observed: 3.16 ft at 11:12AM Aug 21, 2017Observed: 3.22 ft at 11:18AM Aug 21, 2017Observed: 3.28 ft at 11:24AM Aug 21, 2017Observed: 3.32 ft at 11:30AM Aug 21, 2017Observed: 3.39 ft at 11:36AM Aug 21, 2017Observed: 3.45 ft at 11:42AM Aug 21, 2017Observed: 3.49 ft at 11:48AM Aug 21, 2017Observed: 3.52 ft at 11:54AM Aug 21, 2017Observed: 3.55 ft at 12:00PM Aug 21, 2017Observed: 3.57 ft at 12:06PM Aug 21, 2017Observed: 3.55 ft at 12:12PM Aug 21, 2017Observed: 3.59 ft at 12:24PM Aug 21, 2017Observed: 3.57 ft at 12:30PM Aug 21, 2017Observed: 3.6 ft at 12:36PM Aug 21, 2017Observed: 3.6 ft at 12:42PM Aug 21, 2017Observed: 3.57 ft at 12:48PM Aug 21, 2017Observed: 3.58 ft at 12:54PM Aug 21, 2017Observed: 3.58 ft at 1:00PM Aug 21, 2017Observed: 3.56 ft at 1:06PM Aug 21, 2017Observed: 3.52 ft at 1:12PM Aug 21, 2017Observed: 3.49 ft at 1:18PM Aug 21, 2017Observed: 3.44 ft at 1:24PM Aug 21, 2017Observed: 3.39 ft at 1:30PM Aug 21, 2017Observed: 3.35 ft at 1:36PM Aug 21, 2017Observed: 3.3 ft at 1:42PM Aug 21, 2017Observed: 3.25 ft at 1:48PM Aug 21, 2017Observed: 3.19 ft at 1:54PM Aug 21, 2017Observed: 3.14 ft at 2:00PM Aug 21, 2017Observed: 3.07 ft at 2:06PM Aug 21, 2017Observed: 3 ft at 2:12PM Aug 21, 2017Observed: 2.93 ft at 2:18PM Aug 21, 2017Observed: 2.87 ft at 2:24PM Aug 21, 2017Observed: 2.79 ft at 2:30PM Aug 21, 2017Observed: 2.71 ft at 2:36PM Aug 21, 2017Observed: 2.66 ft at 2:42PM Aug 21, 2017Observed: 2.58 ft at 2:48PM Aug 21, 2017Observed: 2.49 ft at 2:54PM Aug 21, 2017Observed: 2.4 ft at 3:00PM Aug 21, 2017Observed: 2.33 ft at 3:06PM Aug 21, 2017Observed: 2.23 ft at 3:12PM Aug 21, 2017Observed: 2.15 ft at 3:18PM Aug 21, 2017Observed: 2.07 ft at 3:24PM Aug 21, 2017Observed: 1.97 ft at 3:30PM Aug 21, 2017Observed: 1.88 ft at 3:36PM Aug 21, 2017Observed: 1.79 ft at 3:42PM Aug 21, 2017Observed: 1.71 ft at 3:48PM Aug 21, 2017Observed: 1.62 ft at 3:54PM Aug 21, 2017Observed: 1.54 ft at 4:00PM Aug 21, 2017Observed: 1.46 ft at 4:06PM Aug 21, 2017Observed: 1.37 ft at 4:12PM Aug 21, 2017Observed: 1.29 ft at 4:18PM Aug 21, 2017Observed: 1.21 ft at 4:24PM Aug 21, 2017Observed: 1.13 ft at 4:30PM Aug 21, 2017Observed: 1.04 ft at 4:36PM Aug 21, 2017Observed: 0.96 ft at 4:42PM Aug 21, 2017Observed: 0.88 ft at 4:48PM Aug 21, 2017Observed: 0.78 ft at 4:54PM Aug 21, 2017Observed: 0.72 ft at 5:00PM Aug 21, 2017Observed: 0.67 ft at 5:06PM Aug 21, 2017Observed: 0.6 ft at 5:12PM Aug 21, 2017Observed: 0.53 ft at 5:18PM Aug 21, 2017Observed: 0.46 ft at 5:24PM Aug 21, 2017Observed: 0.4 ft at 5:30PM Aug 21, 2017Observed: 0.35 ft at 5:36PM Aug 21, 2017Observed: 0.33 ft at 5:42PM Aug 21, 2017Observed: 0.31 ft at 5:48PM Aug 21, 2017Observed: 0.32 ft at 5:54PM Aug 21, 2017Observed: 0.33 ft at 6:00PM Aug 21, 2017Observed: 0.33 ft at 6:06PM Aug 21, 2017Observed: 0.35 ft at 6:12PM Aug 21, 2017Observed: 0.4 ft at 6:18PM Aug 21, 2017Observed: 0.41 ft at 6:24PM Aug 21, 2017Observed: 0.41 ft at 6:30PM Aug 21, 2017Observed: 0.43 ft at 6:36PM Aug 21, 2017Observed: 0.45 ft at 6:42PM Aug 21, 2017Observed: 0.48 ft at 6:48PM Aug 21, 2017Observed: 0.51 ft at 6:54PM Aug 21, 2017Observed: 0.56 ft at 7:00PM Aug 21, 2017Observed: 0.61 ft at 7:06PM Aug 21, 2017Observed: 0.7 ft at 7:12PM Aug 21, 2017Observed: 0.77 ft at 7:18PM Aug 21, 2017Observed: 0.82 ft at 7:24PM Aug 21, 2017Observed: 0.89 ft at 7:30PM Aug 21, 2017Observed: 0.96 ft at 7:36PM Aug 21, 2017Observed: 1.02 ft at 7:42PM Aug 21, 2017Observed: 1.24 ft at 8:00PM Aug 21, 2017Observed: 1.33 ft at 8:06PM Aug 21, 2017Observed: 1.41 ft at 8:12PM Aug 21, 2017Observed: 1.49 ft at 8:18PM Aug 21, 2017Observed: 1.55 ft at 8:24PM Aug 21, 2017Observed: 1.63 ft at 8:30PM Aug 21, 2017Observed: 1.7 ft at 8:36PM Aug 21, 2017Observed: 1.78 ft at 8:42PM Aug 21, 2017Observed: 1.86 ft at 8:48PM Aug 21, 2017Observed: 1.95 ft at 8:54PM Aug 21, 2017Observed: 2.03 ft at 9:00PM Aug 21, 2017Observed: 2.1 ft at 9:06PM Aug 21, 2017Observed: 2.19 ft at 9:12PM Aug 21, 2017Observed: 2.27 ft at 9:18PM Aug 21, 2017Observed: 2.36 ft at 9:24PM Aug 21, 2017Observed: 2.44 ft at 9:30PM Aug 21, 2017Observed: 2.5 ft at 9:36PM Aug 21, 2017Observed: 2.58 ft at 9:42PM Aug 21, 2017Observed: 2.66 ft at 9:48PM Aug 21, 2017Observed: 2.73 ft at 9:54PM Aug 21, 2017Observed: 2.81 ft at 10:00PM Aug 21, 2017Observed: 2.9 ft at 10:06PM Aug 21, 2017Observed: 2.98 ft at 10:12PM Aug 21, 2017Observed: 3.05 ft at 10:18PM Aug 21, 2017Observed: 3.14 ft at 10:24PM Aug 21, 2017Observed: 3.22 ft at 10:30PM Aug 21, 2017Observed: 3.31 ft at 10:36PM Aug 21, 2017Observed: 3.39 ft at 10:42PM Aug 21, 2017Observed: 3.47 ft at 10:48PM Aug 21, 2017Observed: 3.54 ft at 10:54PM Aug 21, 2017Observed: 3.63 ft at 11:00PM Aug 21, 2017Observed: 3.7 ft at 11:06PM Aug 21, 2017Forecast: 3.7 ft 12:00AM Aug 22, 2017Highest Forecast: 3.8 ft 1:00AM Aug 22, 2017Forecast: 3.5 ft 2:00AM Aug 22, 2017Forecast: 2.8 ft 3:00AM Aug 22, 2017Forecast: 1.8 ft 4:00AM Aug 22, 2017Forecast: 0.7 ft 5:00AM Aug 22, 2017Forecast: -0.1 ft 6:00AM Aug 22, 2017Forecast: -0.2 ft 7:00AM Aug 22, 2017Forecast: 0.1 ft 8:00AM Aug 22, 2017Forecast: 0.8 ft 9:00AM Aug 22, 2017Forecast: 1.5 ft 10:00AM Aug 22, 2017Forecast: 2.2 ft 11:00AM Aug 22, 2017Forecast: 2.9 ft 12:00PM Aug 22, 2017Forecast: 3.3 ft 1:00PM Aug 22, 2017Forecast: 3.2 ft 2:00PM Aug 22, 2017Forecast: 2.8 ft 3:00PM Aug 22, 2017Forecast: 2 ft 4:00PM Aug 22, 2017Forecast: 1 ft 5:00PM Aug 22, 2017Forecast: 0.2 ft 6:00PM Aug 22, 2017Forecast: -0.1 ft 7:00PM Aug 22, 2017Forecast: 0.2 ft 8:00PM Aug 22, 2017Forecast: 0.9 ft 9:00PM Aug 22, 2017Forecast: 1.6 ft 10:00PM Aug 22, 2017Forecast: 2.4 ft 11:00PM Aug 22, 2017Forecast: 3.1 ft 12:00AM Aug 23, 2017Forecast: 3.6 ft 1:00AM Aug 23, 2017Forecast: 3.7 ft 2:00AM Aug 23, 2017Forecast: 3.3 ft 3:00AM Aug 23, 2017Forecast: 2.6 ft 4:00AM Aug 23, 2017Forecast: 1.6 ft 5:00AM Aug 23, 2017Forecast: 0.6 ft 6:00AM Aug 23, 2017Forecast: -0.1 ft 7:00AM Aug 23, 2017Forecast: -0.2 ft 8:00AM Aug 23, 2017Forecast: 0.3 ft 9:00AM Aug 23, 2017Forecast: 1 ft 10:00AM Aug 23, 2017Forecast: 1.7 ft 11:00AM Aug 23, 2017Forecast: 2.4 ft 12:00PM Aug 23, 2017Forecast: 3 ft 1:00PM Aug 23, 2017Forecast: 3.3 ft 2:00PM Aug 23, 2017Forecast: 3.2 ft 3:00PM Aug 23, 2017Forecast: 2.7 ft 4:00PM Aug 23, 2017Forecast: 1.9 ft 5:00PM Aug 23, 2017Forecast: 0.9 ft 6:00PM Aug 23, 2017Forecast: 0.2 ft 7:00PM Aug 23, 2017Forecast: 0 ft 8:00PM Aug 23, 2017Forecast: 0.3 ft 9:00PM Aug 23, 2017Forecast: 0.9 ft 10:00PM Aug 23, 2017Forecast: 1.7 ft 11:00PM Aug 23, 2017Forecast: 2.4 ft 12:00AM Aug 24, 2017Forecast: 3.1 ft 1:00AM Aug 24, 2017Forecast: 3.5 ft 2:00AM Aug 24, 2017Forecast: 3.6 ft 3:00AM Aug 24, 2017Forecast: 3.1 ft 4:00AM Aug 24, 2017Forecast: 2.4 ft 5:00AM Aug 24, 2017Forecast: 1.4 ft 6:00AM Aug 24, 2017Forecast: 0.5 ft 7:00AM Aug 24, 2017Forecast: -0.1 ft 8:00AM Aug 24, 2017Forecast: 0 ft 9:00AM Aug 24, 2017Forecast: 0.5 ft 10:00AM Aug 24, 2017Forecast: 1.2 ft 11:00AM Aug 24, 2017Forecast: 1.9 ft 12:00PM Aug 24, 2017Forecast: 2.6 ft 1:00PM Aug 24, 2017Forecast: 3.1 ft 2:00PM Aug 24, 2017Forecast: 3.4 ft 3:00PM Aug 24, 2017Data courtesy of NOAA National Ocean ServiceNTKM3(plotting HMIRG) Graph Created (11:30PM Aug 21, 2017)ObservedForecast (issued 4:18PM Aug 21)Latest observed value: 3.7 ft at 11:06 PM EDT 21-Aug-2017. 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: During times when the area is under a Tropical Storm/Hurricane Watch or Warning, the storm tide or total water level forecast will reflect a plausible worst case scenario (versus the usual most likely scenario).

NOTE: Coastal flood impacts are dependent upon waves as well as tide level. High waves can result in flooding even if the tide level is below flood stage.

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

NOTE: Forecasts for the Nantucket Harbor at Nantucket are issued routinely year-round.

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

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Flood Categories (in feet)
Major Flood Stage: 8
Moderate Flood Stage: 6
Flood Stage: 5
Action Stage: 4
Low Stage (in feet): -9999

Historic Crests
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.

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

Zoom Level:16
KML Image
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 Signifcant flooding is expected in low lying portions of Nantucket. Road closures and some evacuations can be expected. 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. Some localized evacuations may be necessary.
6 Moderate flooding of Nantucket Harbor is expected. Some low lying coastal roads will experience during the time nearest high tide.
4.5 Minor coastal flooding begins on Easy Street in Nantucket.
Photos
(1) Nantucket Tidal Station
About This Location Collapse

Latitude: 41.285000° N, Longitude: 70.096667° 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 Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available 6 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 Weather Forecast Office
445 Myles Standish Blvd
Taunton, MA 02780
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Page last modified: 21-Dec-2016 5:21 PM
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