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Hydrograph River at a Glance Download
Nantucket Harbor at Nantucket Tide Height (ft)Observed: 2.01 ft at 11:48AM May 17, 2018Observed: 2.1 ft at 11:54AM May 17, 2018Observed: 2.19 ft at 12:00PM May 17, 2018Observed: 2.27 ft at 12:06PM May 17, 2018Observed: 2.35 ft at 12:12PM May 17, 2018Observed: 2.4 ft at 12:18PM May 17, 2018Observed: 2.48 ft at 12:24PM May 17, 2018Observed: 2.55 ft at 12:30PM May 17, 2018Observed: 2.62 ft at 12:36PM May 17, 2018Observed: 2.68 ft at 12:42PM May 17, 2018Observed: 2.7 ft at 12:48PM May 17, 2018Observed: 2.76 ft at 12:54PM May 17, 2018Observed: 2.86 ft at 1:00PM May 17, 2018Observed: 2.96 ft at 1:06PM May 17, 2018Observed: 3.01 ft at 1:12PM May 17, 2018Observed: 3.08 ft at 1:18PM May 17, 2018Observed: 3.16 ft at 1:24PM May 17, 2018Observed: 3.22 ft at 1:30PM May 17, 2018Observed: 3.26 ft at 1:36PM May 17, 2018Observed: 3.29 ft at 1:42PM May 17, 2018Observed: 3.33 ft at 1:48PM May 17, 2018Observed: 3.36 ft at 1:54PM May 17, 2018Observed: 3.37 ft at 2:00PM May 17, 2018Observed: 3.41 ft at 2:06PM May 17, 2018Observed: 3.45 ft at 2:12PM May 17, 2018Observed: 3.47 ft at 2:18PM May 17, 2018Observed: 3.48 ft at 2:24PM May 17, 2018Observed: 3.48 ft at 2:30PM May 17, 2018Observed: 3.47 ft at 2:36PM May 17, 2018Observed: 3.47 ft at 2:42PM May 17, 2018Observed: 3.47 ft at 2:48PM May 17, 2018Observed: 3.47 ft at 2:54PM May 17, 2018Observed: 3.47 ft at 3:00PM May 17, 2018Observed: 3.47 ft at 3:06PM May 17, 2018Observed: 3.46 ft at 3:12PM May 17, 2018Observed: 3.42 ft at 3:18PM May 17, 2018Observed: 3.36 ft at 3:24PM May 17, 2018Observed: 3.28 ft at 3:30PM May 17, 2018Observed: 3.28 ft at 3:36PM May 17, 2018Observed: 3.24 ft at 3:42PM May 17, 2018Observed: 3.19 ft at 3:48PM May 17, 2018Observed: 3.16 ft at 3:54PM May 17, 2018Observed: 3.09 ft at 4:00PM May 17, 2018Observed: 2.99 ft at 4:06PM May 17, 2018Observed: 2.92 ft at 4:12PM May 17, 2018Observed: 2.84 ft at 4:18PM May 17, 2018Observed: 2.72 ft at 4:24PM May 17, 2018Observed: 2.68 ft at 4:30PM May 17, 2018Observed: 2.65 ft at 4:36PM May 17, 2018Observed: 2.58 ft at 4:42PM May 17, 2018Observed: 2.47 ft at 4:48PM May 17, 2018Observed: 2.42 ft at 4:54PM May 17, 2018Observed: 2.35 ft at 5:00PM May 17, 2018Observed: 2.24 ft at 5:06PM May 17, 2018Observed: 2.17 ft at 5:12PM May 17, 2018Observed: 2.08 ft at 5:18PM May 17, 2018Observed: 1.97 ft at 5:24PM May 17, 2018Observed: 1.88 ft at 5:30PM May 17, 2018Observed: 1.82 ft at 5:36PM May 17, 2018Observed: 1.75 ft at 5:42PM May 17, 2018Observed: 1.65 ft at 5:48PM May 17, 2018Observed: 1.56 ft at 5:54PM May 17, 2018Observed: 1.49 ft at 6:00PM May 17, 2018Observed: 1.4 ft at 6:06PM May 17, 2018Observed: 1.33 ft at 6:12PM May 17, 2018Observed: 1.23 ft at 6:18PM May 17, 2018Observed: 1.14 ft at 6:24PM May 17, 2018Observed: 1.05 ft at 6:30PM May 17, 2018Observed: 0.98 ft at 6:36PM May 17, 2018Observed: 0.87 ft at 6:42PM May 17, 2018Observed: 0.82 ft at 6:48PM May 17, 2018Observed: 0.73 ft at 6:54PM May 17, 2018Observed: 0.68 ft at 7:00PM May 17, 2018Observed: 0.62 ft at 7:06PM May 17, 2018Observed: 0.56 ft at 7:12PM May 17, 2018Observed: 0.52 ft at 7:18PM May 17, 2018Observed: 0.48 ft at 7:24PM May 17, 2018Observed: 0.45 ft at 7:30PM May 17, 2018Observed: 0.43 ft at 7:36PM May 17, 2018Observed: 0.39 ft at 7:42PM May 17, 2018Observed: 0.36 ft at 8:00PM May 17, 2018Observed: 0.37 ft at 8:06PM May 17, 2018Observed: 0.36 ft at 8:12PM May 17, 2018Observed: 0.41 ft at 8:18PM May 17, 2018Observed: 0.43 ft at 8:24PM May 17, 2018Observed: 0.46 ft at 8:30PM May 17, 2018Observed: 0.51 ft at 8:36PM May 17, 2018Observed: 0.56 ft at 8:42PM May 17, 2018Observed: 0.6 ft at 8:48PM May 17, 2018Observed: 0.67 ft at 8:54PM May 17, 2018Observed: 0.74 ft at 9:00PM May 17, 2018Observed: 0.78 ft at 9:06PM May 17, 2018Observed: 0.84 ft at 9:12PM May 17, 2018Observed: 0.92 ft at 9:18PM May 17, 2018Observed: 0.97 ft at 9:24PM May 17, 2018Observed: 1.03 ft at 9:30PM May 17, 2018Observed: 1.09 ft at 9:36PM May 17, 2018Observed: 1.16 ft at 9:42PM May 17, 2018Observed: 1.23 ft at 9:48PM May 17, 2018Observed: 1.31 ft at 9:54PM May 17, 2018Observed: 1.38 ft at 10:00PM May 17, 2018Observed: 1.46 ft at 10:06PM May 17, 2018Observed: 1.55 ft at 10:12PM May 17, 2018Observed: 1.63 ft at 10:18PM May 17, 2018Observed: 1.72 ft at 10:24PM May 17, 2018Observed: 1.81 ft at 10:30PM May 17, 2018Observed: 1.9 ft at 10:36PM May 17, 2018Observed: 1.99 ft at 10:42PM May 17, 2018Observed: 2.06 ft at 10:48PM May 17, 2018Observed: 2.15 ft at 10:54PM May 17, 2018Observed: 2.22 ft at 11:00PM May 17, 2018Observed: 2.31 ft at 11:06PM May 17, 2018Observed: 2.4 ft at 11:12PM May 17, 2018Observed: 2.48 ft at 11:18PM May 17, 2018Observed: 2.56 ft at 11:24PM May 17, 2018Observed: 2.65 ft at 11:30PM May 17, 2018Observed: 2.72 ft at 11:36PM May 17, 2018Observed: 2.82 ft at 11:42PM May 17, 2018Observed: 2.9 ft at 11:48PM May 17, 2018Observed: 2.99 ft at 11:54PM May 17, 2018Observed: 3.08 ft at 12:00AM May 18, 2018Observed: 3.17 ft at 12:06AM May 18, 2018Observed: 3.25 ft at 12:12AM May 18, 2018Observed: 3.37 ft at 12:18AM May 18, 2018Observed: 3.46 ft at 12:24AM May 18, 2018Observed: 3.54 ft at 12:30AM May 18, 2018Observed: 3.65 ft at 12:36AM May 18, 2018Observed: 3.71 ft at 12:42AM May 18, 2018Observed: 3.77 ft at 12:48AM May 18, 2018Observed: 3.85 ft at 12:54AM May 18, 2018Observed: 3.9 ft at 1:00AM May 18, 2018Observed: 4 ft at 1:06AM May 18, 2018Observed: 4.07 ft at 1:12AM May 18, 2018Observed: 4.15 ft at 1:18AM May 18, 2018Observed: 4.23 ft at 1:24AM May 18, 2018Observed: 4.28 ft at 1:30AM May 18, 2018Observed: 4.35 ft at 1:36AM May 18, 2018Observed: 4.38 ft at 1:42AM May 18, 2018Observed: 4.4 ft at 1:48AM May 18, 2018Observed: 4.44 ft at 1:54AM May 18, 2018Observed: 4.46 ft at 2:00AM May 18, 2018Observed: 4.51 ft at 2:06AM May 18, 2018Observed: 4.55 ft at 2:12AM May 18, 2018Observed: 4.57 ft at 2:18AM May 18, 2018Observed: 4.59 ft at 2:24AM May 18, 2018Observed: 4.63 ft at 2:30AM May 18, 2018Highest Observation: 4.65 ft at 2:36AM May 18, 2018Observed: 4.64 ft at 2:42AM May 18, 2018Observed: 4.62 ft at 2:48AM May 18, 2018Observed: 4.57 ft at 2:54AM May 18, 2018Observed: 4.55 ft at 3:00AM May 18, 2018Observed: 4.54 ft at 3:06AM May 18, 2018Observed: 4.5 ft at 3:12AM May 18, 2018Observed: 4.48 ft at 3:18AM May 18, 2018Observed: 4.45 ft at 3:24AM May 18, 2018Observed: 4.4 ft at 3:30AM May 18, 2018Observed: 4.36 ft at 3:36AM May 18, 2018Observed: 4.31 ft at 3:42AM May 18, 2018Observed: 4.23 ft at 3:48AM May 18, 2018Observed: 4.17 ft at 3:54AM May 18, 2018Observed: 4.11 ft at 4:00AM May 18, 2018Observed: 4.05 ft at 4:06AM May 18, 2018Observed: 3.98 ft at 4:12AM May 18, 2018Observed: 3.9 ft at 4:18AM May 18, 2018Observed: 3.8 ft at 4:24AM May 18, 2018Observed: 3.73 ft at 4:30AM May 18, 2018Observed: 3.63 ft at 4:36AM May 18, 2018Observed: 3.54 ft at 4:42AM May 18, 2018Observed: 3.45 ft at 4:48AM May 18, 2018Observed: 3.35 ft at 4:54AM May 18, 2018Observed: 3.25 ft at 5:00AM May 18, 2018Observed: 3.16 ft at 5:06AM May 18, 2018Observed: 3.07 ft at 5:12AM May 18, 2018Observed: 2.96 ft at 5:18AM May 18, 2018Observed: 2.86 ft at 5:24AM May 18, 2018Observed: 2.76 ft at 5:30AM May 18, 2018Observed: 2.65 ft at 5:36AM May 18, 2018Observed: 2.55 ft at 5:42AM May 18, 2018Observed: 2.43 ft at 5:48AM May 18, 2018Observed: 2.34 ft at 5:54AM May 18, 2018Observed: 2.24 ft at 6:00AM May 18, 2018Observed: 2.14 ft at 6:06AM May 18, 2018Observed: 2.03 ft at 6:12AM May 18, 2018Observed: 1.92 ft at 6:18AM May 18, 2018Observed: 1.8 ft at 6:24AM May 18, 2018Observed: 1.67 ft at 6:30AM May 18, 2018Observed: 1.53 ft at 6:36AM May 18, 2018Observed: 1.4 ft at 6:42AM May 18, 2018Observed: 1.28 ft at 6:48AM May 18, 2018Observed: 1.15 ft at 6:54AM May 18, 2018Observed: 1.03 ft at 7:00AM May 18, 2018Observed: 0.9 ft at 7:06AM May 18, 2018Observed: 0.78 ft at 7:12AM May 18, 2018Observed: 0.66 ft at 7:18AM May 18, 2018Observed: 0.54 ft at 7:24AM May 18, 2018Observed: 0.42 ft at 7:30AM May 18, 2018Observed: 0.32 ft at 7:36AM May 18, 2018Observed: 0.2 ft at 7:42AM May 18, 2018Observed: 0.11 ft at 7:48AM May 18, 2018Observed: 0.03 ft at 7:54AM May 18, 2018Observed: -0.04 ft at 8:00AM May 18, 2018Observed: -0.11 ft at 8:06AM May 18, 2018Observed: -0.16 ft at 8:12AM May 18, 2018Observed: -0.2 ft at 8:18AM May 18, 2018Observed: -0.23 ft at 8:24AM May 18, 2018Observed: -0.28 ft at 8:30AM May 18, 2018Observed: -0.3 ft at 8:36AM May 18, 2018Observed: -0.32 ft at 8:42AM May 18, 2018Observed: -0.36 ft at 8:48AM May 18, 2018Observed: -0.39 ft at 8:54AM May 18, 2018Observed: -0.39 ft at 9:00AM May 18, 2018Observed: -0.41 ft at 9:06AM May 18, 2018Observed: -0.41 ft at 9:12AM May 18, 2018Observed: -0.43 ft at 9:18AM May 18, 2018Observed: -0.42 ft at 9:24AM May 18, 2018Observed: -0.38 ft at 9:30AM May 18, 2018Observed: -0.35 ft at 9:36AM May 18, 2018Observed: -0.28 ft at 9:42AM May 18, 2018Observed: -0.21 ft at 9:48AM May 18, 2018Observed: 2.12 ft at 1:06PM May 18, 2018Observed: 2.19 ft at 1:12PM May 18, 2018Observed: 3.18 ft at 3:06PM May 18, 2018Observed: 3.27 ft at 3:30PM May 18, 2018Observed: 3.27 ft at 3:36PM May 18, 2018Observed: 3.25 ft at 3:48PM May 18, 2018Observed: 3.24 ft at 3:54PM May 18, 2018Observed: 3.2 ft at 4:00PM May 18, 2018Observed: 3.17 ft at 4:06PM May 18, 2018Observed: 3.15 ft at 4:12PM May 18, 2018Observed: 3.1 ft at 4:18PM May 18, 2018Observed: 3.06 ft at 4:24PM May 18, 2018Observed: 3.02 ft at 4:30PM May 18, 2018Observed: 2.99 ft at 4:36PM May 18, 2018Observed: 2.95 ft at 4:42PM May 18, 2018Observed: 2.89 ft at 4:48PM May 18, 2018Observed: 2.83 ft at 4:54PM May 18, 2018Observed: 2.79 ft at 5:00PM May 18, 2018Observed: 2.71 ft at 5:06PM May 18, 2018Observed: 2.66 ft at 5:12PM May 18, 2018Observed: 2.61 ft at 5:18PM May 18, 2018Observed: 2.54 ft at 5:24PM May 18, 2018Observed: 2.47 ft at 5:30PM May 18, 2018Observed: 2.4 ft at 5:36PM May 18, 2018Observed: 2.33 ft at 5:42PM May 18, 2018Observed: 2.26 ft at 5:48PM May 18, 2018Observed: 2.17 ft at 5:54PM May 18, 2018Observed: 2.09 ft at 6:00PM May 18, 2018Observed: 2 ft at 6:06PM May 18, 2018Observed: 1.93 ft at 6:12PM May 18, 2018Observed: 1.86 ft at 6:18PM May 18, 2018Observed: 1.76 ft at 6:24PM May 18, 2018Observed: 1.68 ft at 6:30PM May 18, 2018Observed: 1.6 ft at 6:36PM May 18, 2018Observed: 1.52 ft at 6:42PM May 18, 2018Observed: 1.44 ft at 6:48PM May 18, 2018Observed: 1.33 ft at 6:54PM May 18, 2018Observed: 1.26 ft at 7:00PM May 18, 2018Observed: 1.18 ft at 7:06PM May 18, 2018Observed: 1.11 ft at 7:12PM May 18, 2018Observed: 1.03 ft at 7:18PM May 18, 2018Observed: 0.94 ft at 7:24PM May 18, 2018Observed: 0.87 ft at 7:30PM May 18, 2018Observed: 0.81 ft at 7:36PM May 18, 2018Observed: 0.76 ft at 7:42PM May 18, 2018Observed: 0.57 ft at 8:00PM May 18, 2018Observed: 0.49 ft at 8:06PM May 18, 2018Observed: 0.45 ft at 8:12PM May 18, 2018Observed: 0.42 ft at 8:18PM May 18, 2018Observed: 0.39 ft at 8:24PM May 18, 2018Observed: 0.35 ft at 8:30PM May 18, 2018Observed: 0.33 ft at 8:36PM May 18, 2018Observed: 0.31 ft at 8:42PM May 18, 2018Observed: 0.32 ft at 8:48PM May 18, 2018Observed: 0.32 ft at 8:54PM May 18, 2018Observed: 0.31 ft at 9:00PM May 18, 2018Observed: 0.34 ft at 9:06PM May 18, 2018Observed: 0.39 ft at 9:12PM May 18, 2018Observed: 0.44 ft at 9:18PM May 18, 2018Observed: 0.49 ft at 9:24PM May 18, 2018Observed: 0.54 ft at 9:30PM May 18, 2018Observed: 0.59 ft at 9:36PM May 18, 2018Observed: 0.61 ft at 9:42PM May 18, 2018Observed: 0.64 ft at 9:48PM May 18, 2018Observed: 0.67 ft at 9:54PM May 18, 2018Observed: 0.71 ft at 10:00PM May 18, 2018Observed: 0.78 ft at 10:06PM May 18, 2018Observed: 0.82 ft at 10:12PM May 18, 2018Observed: 0.91 ft at 10:18PM May 18, 2018Observed: 1 ft at 10:24PM May 18, 2018Observed: 1.07 ft at 10:30PM May 18, 2018Observed: 1.13 ft at 10:36PM May 18, 2018Observed: 1.21 ft at 10:42PM May 18, 2018Observed: 1.28 ft at 10:48PM May 18, 2018Observed: 1.35 ft at 10:54PM May 18, 2018Observed: 1.43 ft at 11:00PM May 18, 2018Observed: 1.51 ft at 11:06PM May 18, 2018Observed: 1.59 ft at 11:12PM May 18, 2018Observed: 1.67 ft at 11:18PM May 18, 2018Observed: 1.75 ft at 11:24PM May 18, 2018Observed: 1.84 ft at 11:30PM May 18, 2018Observed: 1.93 ft at 11:36PM May 18, 2018Observed: 2.03 ft at 11:42PM May 18, 2018Observed: 2.12 ft at 11:48PM May 18, 2018Observed: 2.19 ft at 11:54PM May 18, 2018Observed: 2.26 ft at 12:00AM May 19, 2018Observed: 2.33 ft at 12:06AM May 19, 2018Observed: 2.4 ft at 12:12AM May 19, 2018Observed: 2.49 ft at 12:18AM May 19, 2018Observed: 2.57 ft at 12:24AM May 19, 2018Observed: 2.64 ft at 12:30AM May 19, 2018Observed: 2.73 ft at 12:36AM May 19, 2018Observed: 2.81 ft at 12:42AM May 19, 2018Observed: 2.89 ft at 12:48AM May 19, 2018Observed: 2.97 ft at 12:54AM May 19, 2018Observed: 3.05 ft at 1:00AM May 19, 2018Observed: 3.13 ft at 1:06AM May 19, 2018Observed: 3.21 ft at 1:12AM May 19, 2018Observed: 3.29 ft at 1:18AM May 19, 2018Observed: 3.36 ft at 1:24AM May 19, 2018Observed: 3.45 ft at 1:30AM May 19, 2018Observed: 3.51 ft at 1:36AM May 19, 2018Observed: 3.61 ft at 1:42AM May 19, 2018Observed: 3.68 ft at 1:48AM May 19, 2018Observed: 3.75 ft at 1:54AM May 19, 2018Observed: 3.83 ft at 2:00AM May 19, 2018Observed: 3.91 ft at 2:06AM May 19, 2018Observed: 3.96 ft at 2:12AM May 19, 2018Observed: 4.02 ft at 2:18AM May 19, 2018Observed: 4.05 ft at 2:24AM May 19, 2018Observed: 4.11 ft at 2:30AM May 19, 2018Observed: 4.18 ft at 2:36AM May 19, 2018Observed: 4.23 ft at 2:42AM May 19, 2018Observed: 4.27 ft at 2:48AM May 19, 2018Observed: 4.3 ft at 2:54AM May 19, 2018Observed: 4.31 ft at 3:00AM May 19, 2018Observed: 4.31 ft at 3:06AM May 19, 2018Observed: 4.32 ft at 3:12AM May 19, 2018Observed: 4.34 ft at 3:18AM May 19, 2018Observed: 4.33 ft at 3:24AM May 19, 2018Observed: 4.34 ft at 3:30AM May 19, 2018Observed: 4.36 ft at 3:36AM May 19, 2018Observed: 4.36 ft at 3:42AM May 19, 2018Observed: 4.36 ft at 3:48AM May 19, 2018Observed: 4.37 ft at 3:54AM May 19, 2018Observed: 4.33 ft at 4:00AM May 19, 2018Observed: 4.29 ft at 4:06AM May 19, 2018Observed: 4.25 ft at 4:12AM May 19, 2018Observed: 4.2 ft at 4:18AM May 19, 2018Observed: 4.17 ft at 4:24AM May 19, 2018Observed: 4.12 ft at 4:30AM May 19, 2018Observed: 4 ft at 4:42AM May 19, 2018Observed: 3.93 ft at 4:48AM May 19, 2018Observed: 3.87 ft at 4:54AM May 19, 2018Observed: 3.81 ft at 5:00AM May 19, 2018Observed: 3.75 ft at 5:06AM May 19, 2018Observed: 3.68 ft at 5:12AM May 19, 2018Observed: 3.6 ft at 5:18AM May 19, 2018Observed: 3.52 ft at 5:24AM May 19, 2018Observed: 3.44 ft at 5:30AM May 19, 2018Observed: 3.34 ft at 5:36AM May 19, 2018Observed: 3.25 ft at 5:42AM May 19, 2018Observed: 3.17 ft at 5:48AM May 19, 2018Observed: 3.07 ft at 5:54AM May 19, 2018Observed: 2.97 ft at 6:00AM May 19, 2018Observed: 2.87 ft at 6:06AM May 19, 2018Observed: 2.76 ft at 6:12AM May 19, 2018Observed: 2.66 ft at 6:18AM May 19, 2018Observed: 2.57 ft at 6:24AM May 19, 2018Observed: 2.46 ft at 6:30AM May 19, 2018Observed: 2.35 ft at 6:36AM May 19, 2018Observed: 2.24 ft at 6:42AM May 19, 2018Observed: 2.14 ft at 6:48AM May 19, 2018Observed: 2.02 ft at 6:54AM May 19, 2018Observed: 1.91 ft at 7:00AM May 19, 2018Observed: 1.8 ft at 7:06AM May 19, 2018Observed: 1.68 ft at 7:12AM May 19, 2018Observed: 1.56 ft at 7:18AM May 19, 2018Observed: 1.44 ft at 7:24AM May 19, 2018Observed: 1.32 ft at 7:30AM May 19, 2018Observed: 1.21 ft at 7:36AM May 19, 2018Observed: 1.08 ft at 7:42AM May 19, 2018Observed: 0.94 ft at 7:48AM May 19, 2018Observed: 0.82 ft at 7:54AM May 19, 2018Observed: 0.69 ft at 8:00AM May 19, 2018Observed: 0.58 ft at 8:06AM May 19, 2018Observed: 0.46 ft at 8:12AM May 19, 2018Observed: 0.36 ft at 8:18AM May 19, 2018Observed: 0.27 ft at 8:24AM May 19, 2018Observed: 0.16 ft at 8:30AM May 19, 2018Observed: 0.08 ft at 8:36AM May 19, 2018Observed: 0 ft at 8:42AM May 19, 2018Observed: -0.08 ft at 8:48AM May 19, 2018Observed: -0.15 ft at 8:54AM May 19, 2018Observed: -0.2 ft at 9:00AM May 19, 2018Observed: -0.26 ft at 9:06AM May 19, 2018Observed: -0.31 ft at 9:12AM May 19, 2018Observed: -0.34 ft at 9:18AM May 19, 2018Observed: -0.38 ft at 9:24AM May 19, 2018Observed: -0.41 ft at 9:30AM May 19, 2018Observed: -0.43 ft at 9:36AM May 19, 2018Observed: -0.46 ft at 9:42AM May 19, 2018Observed: -0.47 ft at 9:48AM May 19, 2018Observed: -0.47 ft at 9:54AM May 19, 2018Observed: -0.46 ft at 10:00AM May 19, 2018Observed: -0.46 ft at 10:06AM May 19, 2018Observed: -0.46 ft at 10:12AM May 19, 2018Observed: -0.43 ft at 10:18AM May 19, 2018Observed: -0.39 ft at 10:24AM May 19, 2018Observed: -0.34 ft at 10:30AM May 19, 2018Observed: -0.29 ft at 10:36AM May 19, 2018Observed: -0.23 ft at 10:42AM May 19, 2018Observed: -0.15 ft at 10:48AM May 19, 2018Observed: -0.09 ft at 10:54AM May 19, 2018Observed: -0.02 ft at 11:00AM May 19, 2018Observed: 0.05 ft at 11:06AM May 19, 2018Observed: 0.12 ft at 11:12AM May 19, 2018Observed: 0.21 ft at 11:18AM May 19, 2018Observed: 0.31 ft at 11:24AM May 19, 2018Observed: 0.37 ft at 11:30AM May 19, 2018Observed: 0.43 ft at 11:36AM May 19, 2018Observed: 0.49 ft at 11:42AM May 19, 2018Observed: 0.56 ft at 11:48AM May 19, 2018Observed: 0.62 ft at 11:54AM May 19, 2018Observed: 0.66 ft at 12:00PM May 19, 2018Observed: 0.81 ft at 12:12PM May 19, 2018Observed: 0.86 ft at 12:18PM May 19, 2018Observed: 0.94 ft at 12:24PM May 19, 2018Observed: 1.02 ft at 12:30PM May 19, 2018Observed: 1.08 ft at 12:36PM May 19, 2018Observed: 1.14 ft at 12:42PM May 19, 2018Observed: 1.21 ft at 12:48PM May 19, 2018Observed: 1.29 ft at 12:54PM May 19, 2018Observed: 1.34 ft at 1:00PM May 19, 2018Observed: 1.41 ft at 1:06PM May 19, 2018Observed: 1.5 ft at 1:12PM May 19, 2018Observed: 1.57 ft at 1:18PM May 19, 2018Observed: 1.63 ft at 1:24PM May 19, 2018Observed: 1.7 ft at 1:30PM May 19, 2018Observed: 1.77 ft at 1:36PM May 19, 2018Observed: 1.83 ft at 1:42PM May 19, 2018Observed: 1.93 ft at 1:48PM May 19, 2018Observed: 2.01 ft at 1:54PM May 19, 2018Observed: 2.12 ft at 2:00PM May 19, 2018Observed: 2.19 ft at 2:06PM May 19, 2018Observed: 2.25 ft at 2:12PM May 19, 2018Observed: 2.32 ft at 2:18PM May 19, 2018Observed: 2.38 ft at 2:24PM May 19, 2018Observed: 2.41 ft at 2:30PM May 19, 2018Observed: 2.49 ft at 2:36PM May 19, 2018Observed: 2.58 ft at 2:42PM May 19, 2018Observed: 2.65 ft at 2:48PM May 19, 2018Observed: 2.73 ft at 2:54PM May 19, 2018Observed: 2.8 ft at 3:00PM May 19, 2018Observed: 2.84 ft at 3:06PM May 19, 2018Observed: 2.92 ft at 3:12PM May 19, 2018Observed: 2.97 ft at 3:18PM May 19, 2018Observed: 3 ft at 3:24PM May 19, 2018Observed: 3.04 ft at 3:30PM May 19, 2018Observed: 3.07 ft at 3:36PM May 19, 2018Observed: 3.1 ft at 3:42PM May 19, 2018Observed: 3.14 ft at 3:48PM May 19, 2018Observed: 3.19 ft at 3:54PM May 19, 2018Observed: 3.21 ft at 4:00PM May 19, 2018Observed: 3.26 ft at 4:06PM May 19, 2018Observed: 3.29 ft at 4:12PM May 19, 2018Observed: 3.29 ft at 4:18PM May 19, 2018Observed: 3.29 ft at 4:24PM May 19, 2018Observed: 3.29 ft at 4:30PM May 19, 2018Observed: 3.29 ft at 4:36PM May 19, 2018Observed: 3.29 ft at 4:42PM May 19, 2018Observed: 3.27 ft at 4:48PM May 19, 2018Observed: 3.27 ft at 4:54PM May 19, 2018Observed: 3.25 ft at 5:00PM May 19, 2018Observed: 3.23 ft at 5:06PM May 19, 2018Observed: 3.21 ft at 5:12PM May 19, 2018Observed: 3.16 ft at 5:18PM May 19, 2018Observed: 3.15 ft at 5:24PM May 19, 2018Observed: 3.1 ft at 5:30PM May 19, 2018Observed: 3.04 ft at 5:36PM May 19, 2018Observed: 2.99 ft at 5:42PM May 19, 2018Observed: 2.92 ft at 5:48PM May 19, 2018Observed: 2.86 ft at 5:54PM May 19, 2018Observed: 2.81 ft at 6:00PM May 19, 2018Observed: 2.73 ft at 6:06PM May 19, 2018Observed: 2.66 ft at 6:12PM May 19, 2018Observed: 2.6 ft at 6:18PM May 19, 2018Observed: 2.53 ft at 6:24PM May 19, 2018Observed: 2.46 ft at 6:30PM May 19, 2018Observed: 2.38 ft at 6:36PM May 19, 2018Observed: 2.31 ft at 6:42PM May 19, 2018Observed: 2.24 ft at 6:48PM May 19, 2018Observed: 2.16 ft at 6:54PM May 19, 2018Observed: 2.09 ft at 7:00PM May 19, 2018Observed: 1.99 ft at 7:06PM May 19, 2018Observed: 1.89 ft at 7:12PM May 19, 2018Observed: 1.81 ft at 7:18PM May 19, 2018Observed: 1.73 ft at 7:24PM May 19, 2018Observed: 1.66 ft at 7:30PM May 19, 2018Observed: 1.58 ft at 7:36PM May 19, 2018Observed: 1.49 ft at 7:42PM May 19, 2018Observed: 1.4 ft at 7:48PM May 19, 2018Observed: 1.22 ft at 8:00PM May 19, 2018Observed: 1.14 ft at 8:06PM May 19, 2018Observed: 1.05 ft at 8:12PM May 19, 2018Observed: 0.96 ft at 8:18PM May 19, 2018Observed: 0.89 ft at 8:24PM May 19, 2018Observed: 0.8 ft at 8:30PM May 19, 2018Observed: 0.72 ft at 8:36PM May 19, 2018Observed: 0.67 ft at 8:42PM May 19, 2018Observed: 0.61 ft at 8:48PM May 19, 2018Observed: 0.54 ft at 8:54PM May 19, 2018Observed: 0.48 ft at 9:00PM May 19, 2018Observed: 0.42 ft at 9:06PM May 19, 2018Observed: 0.36 ft at 9:12PM May 19, 2018Observed: 0.32 ft at 9:18PM May 19, 2018Observed: 0.28 ft at 9:24PM May 19, 2018Observed: 0.25 ft at 9:30PM May 19, 2018Observed: 0.24 ft at 9:36PM May 19, 2018Observed: 0.23 ft at 9:42PM May 19, 2018Observed: 0.24 ft at 9:48PM May 19, 2018Observed: 0.24 ft at 9:54PM May 19, 2018Observed: 0.26 ft at 10:00PM May 19, 2018Observed: 0.25 ft at 10:06PM May 19, 2018Observed: 0.27 ft at 10:12PM May 19, 2018Observed: 0.27 ft at 10:18PM May 19, 2018Observed: 0.31 ft at 10:24PM May 19, 2018Observed: 0.37 ft at 10:30PM May 19, 2018Observed: 0.41 ft at 10:36PM May 19, 2018Observed: 0.48 ft at 10:42PM May 19, 2018Observed: 0.53 ft at 10:48PM May 19, 2018Observed: 0.58 ft at 10:54PM May 19, 2018Observed: 0.65 ft at 11:00PM May 19, 2018Observed: 0.68 ft at 11:06PM May 19, 2018Observed: 0.72 ft at 11:12PM May 19, 2018Observed: 0.78 ft at 11:18PM May 19, 2018Observed: 0.86 ft at 11:24PM May 19, 2018Observed: 0.93 ft at 11:30PM May 19, 2018Observed: 1 ft at 11:36PM May 19, 2018Observed: 1.08 ft at 11:42PM May 19, 2018Observed: 1.16 ft at 11:48PM May 19, 2018Observed: 1.23 ft at 11:54PM May 19, 2018Observed: 1.31 ft at 12:00AM May 20, 2018Observed: 1.4 ft at 12:06AM May 20, 2018Observed: 1.47 ft at 12:12AM May 20, 2018Observed: 1.55 ft at 12:18AM May 20, 2018Observed: 1.64 ft at 12:24AM May 20, 2018Observed: 1.7 ft at 12:30AM May 20, 2018Observed: 1.77 ft at 12:36AM May 20, 2018Observed: 1.84 ft at 12:42AM May 20, 2018Observed: 1.91 ft at 12:48AM May 20, 2018Observed: 1.99 ft at 12:54AM May 20, 2018Observed: 2.07 ft at 1:00AM May 20, 2018Observed: 2.16 ft at 1:06AM May 20, 2018Observed: 2.25 ft at 1:12AM May 20, 2018Observed: 2.33 ft at 1:18AM May 20, 2018Observed: 2.41 ft at 1:24AM May 20, 2018Observed: 2.48 ft at 1:30AM May 20, 2018Observed: 2.57 ft at 1:36AM May 20, 2018Observed: 2.65 ft at 1:42AM May 20, 2018Observed: 2.73 ft at 1:48AM May 20, 2018Observed: 2.82 ft at 1:54AM May 20, 2018Observed: 2.87 ft at 2:00AM May 20, 2018Observed: 2.94 ft at 2:06AM May 20, 2018Observed: 3.04 ft at 2:12AM May 20, 2018Observed: 3.11 ft at 2:18AM May 20, 2018Observed: 3.18 ft at 2:24AM May 20, 2018Observed: 3.27 ft at 2:30AM May 20, 2018Observed: 3.35 ft at 2:36AM May 20, 2018Observed: 3.43 ft at 2:42AM May 20, 2018Observed: 3.5 ft at 2:48AM May 20, 2018Observed: 3.57 ft at 2:54AM May 20, 2018Observed: 3.64 ft at 3:00AM May 20, 2018Observed: 3.72 ft at 3:06AM May 20, 2018Observed: 3.8 ft at 3:12AM May 20, 2018Observed: 3.86 ft at 3:18AM May 20, 2018Observed: 3.91 ft at 3:24AM May 20, 2018Observed: 3.94 ft at 3:30AM May 20, 2018Observed: 3.99 ft at 3:36AM May 20, 2018Observed: 4.03 ft at 3:42AM May 20, 2018Observed: 4.07 ft at 3:48AM May 20, 2018Observed: 4.11 ft at 3:54AM May 20, 2018Observed: 4.12 ft at 4:00AM May 20, 2018Observed: 4.15 ft at 4:06AM May 20, 2018Observed: 4.17 ft at 4:12AM May 20, 2018Observed: 4.2 ft at 4:18AM May 20, 2018Observed: 4.23 ft at 4:24AM May 20, 2018Observed: 4.27 ft at 4:30AM May 20, 2018Observed: 4.3 ft at 4:36AM May 20, 2018Observed: 4.32 ft at 4:42AM May 20, 2018Observed: 4.34 ft at 4:48AM May 20, 2018Observed: 4.3 ft at 4:54AM May 20, 2018Observed: 4.25 ft at 5:00AM May 20, 2018Observed: 4.2 ft at 5:06AM May 20, 2018Observed: 4.15 ft at 5:12AM May 20, 2018Observed: 4.09 ft at 5:18AM May 20, 2018Observed: 4.05 ft at 5:24AM May 20, 2018Observed: 4.01 ft at 5:30AM May 20, 2018Observed: 3.95 ft at 5:36AM May 20, 2018Observed: 3.89 ft at 5:42AM May 20, 2018Observed: 3.83 ft at 5:48AM May 20, 2018Observed: 3.74 ft at 5:54AM May 20, 2018Observed: 3.65 ft at 6:00AM May 20, 2018Observed: 3.58 ft at 6:06AM May 20, 2018Observed: 3.49 ft at 6:12AM May 20, 2018Observed: 3.44 ft at 6:18AM May 20, 2018Observed: 3.37 ft at 6:24AM May 20, 2018Observed: 3.29 ft at 6:30AM May 20, 2018Observed: 3.21 ft at 6:36AM May 20, 2018Observed: 3.12 ft at 6:42AM May 20, 2018Observed: 3.04 ft at 6:48AM May 20, 2018Observed: 2.95 ft at 6:54AM May 20, 2018Observed: 2.86 ft at 7:00AM May 20, 2018Observed: 2.79 ft at 7:06AM May 20, 2018Observed: 2.69 ft at 7:12AM May 20, 2018Observed: 2.61 ft at 7:18AM May 20, 2018Observed: 2.51 ft at 7:24AM May 20, 2018Observed: 2.41 ft at 7:30AM May 20, 2018Observed: 2.31 ft at 7:36AM May 20, 2018Observed: 2.2 ft at 7:42AM May 20, 2018Observed: 2.06 ft at 7:48AM May 20, 2018Observed: 1.95 ft at 7:54AM May 20, 2018Observed: 1.83 ft at 8:00AM May 20, 2018Observed: 1.73 ft at 8:06AM May 20, 2018Observed: 1.62 ft at 8:12AM May 20, 2018Observed: 1.49 ft at 8:18AM May 20, 2018Observed: 1.39 ft at 8:24AM May 20, 2018Observed: 1.28 ft at 8:30AM May 20, 2018Observed: 1.15 ft at 8:36AM May 20, 2018Observed: 1.03 ft at 8:42AM May 20, 2018Observed: 0.92 ft at 8:48AM May 20, 2018Observed: 0.81 ft at 8:54AM May 20, 2018Observed: 0.7 ft at 9:00AM May 20, 2018Observed: 0.6 ft at 9:06AM May 20, 2018Observed: 0.48 ft at 9:12AM May 20, 2018Observed: 0.39 ft at 9:18AM May 20, 2018Observed: 0.28 ft at 9:24AM May 20, 2018Observed: 0.2 ft at 9:30AM May 20, 2018Observed: 0.13 ft at 9:36AM May 20, 2018Observed: 0.07 ft at 9:42AM May 20, 2018Observed: 0.02 ft at 9:48AM May 20, 2018Observed: -0.04 ft at 9:54AM May 20, 2018Observed: -0.1 ft at 10:00AM May 20, 2018Observed: -0.15 ft at 10:06AM May 20, 2018Observed: -0.2 ft at 10:12AM May 20, 2018Observed: -0.25 ft at 10:18AM May 20, 2018Observed: -0.29 ft at 10:24AM May 20, 2018Observed: -0.32 ft at 10:30AM May 20, 2018Observed: -0.34 ft at 10:36AM May 20, 2018Observed: -0.35 ft at 10:42AM May 20, 2018Observed: -0.36 ft at 10:48AM May 20, 2018Observed: -0.35 ft at 10:54AM May 20, 2018Observed: -0.36 ft at 11:00AM May 20, 2018Observed: -0.32 ft at 11:06AM May 20, 2018Observed: -0.31 ft at 11:12AM May 20, 2018Forecast: 0 ft 12:00PM May 20, 2018Forecast: 0.6 ft 1:00PM May 20, 2018Forecast: 1.3 ft 2:00PM May 20, 2018Forecast: 1.9 ft 3:00PM May 20, 2018Forecast: 2.6 ft 4:00PM May 20, 2018Forecast: 2.9 ft 5:00PM May 20, 2018Forecast: 2.9 ft 6:00PM May 20, 2018Forecast: 2.5 ft 7:00PM May 20, 2018Forecast: 1.8 ft 8:00PM May 20, 2018Forecast: 1 ft 9:00PM May 20, 2018Forecast: 0.3 ft 10:00PM May 20, 2018Forecast: 0.1 ft 11:00PM May 20, 2018Forecast: 0.4 ft 12:00AM May 21, 2018Forecast: 1.1 ft 1:00AM May 21, 2018Forecast: 1.8 ft 2:00AM May 21, 2018Forecast: 2.5 ft 3:00AM May 21, 2018Forecast: 3.1 ft 4:00AM May 21, 2018Forecast: 3.5 ft 5:00AM May 21, 2018Highest Forecast: 3.6 ft 6:00AM May 21, 2018Forecast: 3.2 ft 7:00AM May 21, 2018Forecast: 2.4 ft 8:00AM May 21, 2018Forecast: 1.4 ft 9:00AM May 21, 2018Forecast: 0.5 ft 10:00AM May 21, 2018Forecast: -0.2 ft 11:00AM May 21, 2018Forecast: -0.3 ft 12:00PM May 21, 2018Forecast: 0.1 ft 1:00PM May 21, 2018Forecast: 0.7 ft 2:00PM May 21, 2018Forecast: 1.3 ft 3:00PM May 21, 2018Forecast: 2 ft 4:00PM May 21, 2018Forecast: 2.6 ft 5:00PM May 21, 2018Forecast: 3 ft 6:00PM May 21, 2018Forecast: 3 ft 7:00PM May 21, 2018Forecast: 2.6 ft 8:00PM May 21, 2018Forecast: 1.9 ft 9:00PM May 21, 2018Forecast: 1.1 ft 10:00PM May 21, 2018Forecast: 0.4 ft 11:00PM May 21, 2018Forecast: 0.2 ft 12:00AM May 22, 2018Forecast: 0.4 ft 1:00AM May 22, 2018Forecast: 1 ft 2:00AM May 22, 2018Forecast: 1.6 ft 3:00AM May 22, 2018Forecast: 2.3 ft 4:00AM May 22, 2018Forecast: 2.9 ft 5:00AM May 22, 2018Forecast: 3.3 ft 6:00AM May 22, 2018Forecast: 3.4 ft 7:00AM May 22, 2018Forecast: 3.1 ft 8:00AM May 22, 2018Forecast: 2.4 ft 9:00AM May 22, 2018Forecast: 1.5 ft 10:00AM May 22, 2018Forecast: 0.6 ft 11:00AM May 22, 2018Forecast: -0.1 ft 12:00PM May 22, 2018Forecast: -0.2 ft 1:00PM May 22, 2018Forecast: 0.2 ft 2:00PM May 22, 2018Forecast: 0.7 ft 3:00PM May 22, 2018Forecast: 1.4 ft 4:00PM May 22, 2018Forecast: 2.2 ft 5:00PM May 22, 2018Forecast: 2.8 ft 6:00PM May 22, 2018Forecast: 3.1 ft 7:00PM May 22, 2018Forecast: 3.2 ft 8:00PM May 22, 2018Forecast: 2.7 ft 9:00PM May 22, 2018Forecast: 2 ft 10:00PM May 22, 2018Forecast: 1.2 ft 11:00PM May 22, 2018Forecast: 0.5 ft 12:00AM May 23, 2018Forecast: 0.2 ft 1:00AM May 23, 2018Forecast: 0.4 ft 2:00AM May 23, 2018Forecast: 0.9 ft 3:00AM May 23, 2018Data courtesy of NOAA National Ocean ServiceNTKM3(plotting HMIRG) Graph Created (11:45AM May 20, 2018)ObservedForecast (issued 4:18AM May 20)Latest observed value: -0.31 ft at 11:12 AM EDT 20-May-2018. 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: 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.

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: 6.5
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) 6.70 ft on 03/03/2018
(2) 6.62 ft on 03/02/2018
(3) 6.34 ft on 01/30/2018
(4) 7.36 ft on 01/04/2018
(5) 6.08 ft on 02/08/2016
(6) 7.21 ft on 01/27/2015
(7) 6.08 ft on 03/26/2014
(8) 6.57 ft on 01/03/2014
(9) 6.17 ft on 03/08/2013
(10) 6.12 ft on 03/07/2013
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.

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 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: 21-Dec-2016 10:38 PM
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