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Hydrograph River at a Glance Download
Nantucket Harbor at Nantucket (IN MLLW) Tide Height (ft)Observed: 2 ft at 2:36AM Apr 16, 2024Observed: 2.02 ft at 2:42AM Apr 16, 2024Observed: 2.09 ft at 2:48AM Apr 16, 2024Observed: 2.13 ft at 2:54AM Apr 16, 2024Observed: 2.16 ft at 3:00AM Apr 16, 2024Observed: 2.24 ft at 3:06AM Apr 16, 2024Observed: 2.33 ft at 3:12AM Apr 16, 2024Observed: 2.39 ft at 3:18AM Apr 16, 2024Observed: 2.44 ft at 3:24AM Apr 16, 2024Observed: 2.53 ft at 3:30AM Apr 16, 2024Observed: 2.56 ft at 3:36AM Apr 16, 2024Observed: 2.6 ft at 3:42AM Apr 16, 2024Observed: 2.66 ft at 3:48AM Apr 16, 2024Observed: 2.7 ft at 3:54AM Apr 16, 2024Observed: 2.74 ft at 4:00AM Apr 16, 2024Observed: 2.82 ft at 4:06AM Apr 16, 2024Observed: 2.91 ft at 4:12AM Apr 16, 2024Observed: 2.99 ft at 4:18AM Apr 16, 2024Observed: 3.06 ft at 4:24AM Apr 16, 2024Observed: 3.12 ft at 4:30AM Apr 16, 2024Observed: 3.17 ft at 4:36AM Apr 16, 2024Observed: 3.24 ft at 4:42AM Apr 16, 2024Observed: 3.3 ft at 4:48AM Apr 16, 2024Observed: 3.36 ft at 4:54AM Apr 16, 2024Observed: 3.44 ft at 5:00AM Apr 16, 2024Observed: 3.52 ft at 5:06AM Apr 16, 2024Observed: 3.57 ft at 5:12AM Apr 16, 2024Observed: 3.61 ft at 5:18AM Apr 16, 2024Observed: 3.62 ft at 5:24AM Apr 16, 2024Observed: 3.69 ft at 5:30AM Apr 16, 2024Observed: 3.74 ft at 5:36AM Apr 16, 2024Observed: 3.79 ft at 5:42AM Apr 16, 2024Observed: 3.84 ft at 5:48AM Apr 16, 2024Observed: 3.84 ft at 5:54AM Apr 16, 2024Observed: 3.89 ft at 6:00AM Apr 16, 2024Observed: 3.98 ft at 6:06AM Apr 16, 2024Observed: 4 ft at 6:12AM Apr 16, 2024Observed: 4.05 ft at 6:18AM Apr 16, 2024Observed: 4.09 ft at 6:24AM Apr 16, 2024Observed: 4.14 ft at 6:30AM Apr 16, 2024Observed: 4.13 ft at 6:36AM Apr 16, 2024Observed: 4.15 ft at 6:42AM Apr 16, 2024Observed: 4.2 ft at 6:48AM Apr 16, 2024Observed: 4.16 ft at 6:54AM Apr 16, 2024Observed: 4.17 ft at 7:00AM Apr 16, 2024Observed: 4.14 ft at 7:06AM Apr 16, 2024Observed: 4.15 ft at 7:12AM Apr 16, 2024Observed: 4.21 ft at 7:18AM Apr 16, 2024Observed: 4.2 ft at 7:24AM Apr 16, 2024Highest Observation: 4.25 ft at 7:30AM Apr 16, 2024Observed: 4.19 ft at 7:36AM Apr 16, 2024Observed: 3.59 ft at 9:00AM Apr 16, 2024Observed: 3.54 ft at 9:06AM Apr 16, 2024Observed: 3.24 ft at 9:30AM Apr 16, 2024Observed: 3.16 ft at 9:36AM Apr 16, 2024Observed: 3.13 ft at 9:42AM Apr 16, 2024Observed: 3.08 ft at 9:48AM Apr 16, 2024Observed: 1.12 ft at 12:12PM Apr 16, 2024Observed: 1.05 ft at 12:18PM Apr 16, 2024Observed: 0.96 ft at 12:42PM Apr 16, 2024Observed: 0.93 ft at 12:48PM Apr 16, 2024Observed: 0.79 ft at 1:24PM Apr 16, 2024Observed: 0.89 ft at 2:00PM Apr 16, 2024Observed: 0.95 ft at 2:06PM Apr 16, 2024Observed: 1.3 ft at 3:12PM Apr 16, 2024Observed: 1.35 ft at 3:18PM Apr 16, 2024Observed: 1.52 ft at 3:42PM Apr 16, 2024Observed: 1.56 ft at 3:48PM Apr 16, 2024Observed: 1.64 ft at 4:00PM Apr 16, 2024Observed: 1.67 ft at 4:06PM Apr 16, 2024Observed: 1.86 ft at 4:30PM Apr 16, 2024Observed: 1.93 ft at 4:36PM Apr 16, 2024Observed: 2.12 ft at 5:00PM Apr 16, 2024Observed: 2.19 ft at 5:06PM Apr 16, 2024Observed: 2.23 ft at 5:12PM Apr 16, 2024Observed: 2.26 ft at 5:18PM Apr 16, 2024Observed: 2.5 ft at 5:42PM Apr 16, 2024Observed: 2.55 ft at 5:48PM Apr 16, 2024Observed: 2.66 ft at 6:00PM Apr 16, 2024Observed: 2.69 ft at 6:06PM Apr 16, 2024Observed: 2.75 ft at 6:12PM Apr 16, 2024Observed: 2.81 ft at 6:18PM Apr 16, 2024Observed: 3.23 ft at 9:00PM Apr 16, 2024Observed: 3.22 ft at 9:06PM Apr 16, 2024Observed: 3.2 ft at 9:12PM Apr 16, 2024Observed: 3.18 ft at 9:18PM Apr 16, 2024Observed: 3.06 ft at 9:30PM Apr 16, 2024Observed: 3 ft at 9:36PM Apr 16, 2024Observed: 2.74 ft at 10:12PM Apr 16, 2024Observed: 2.7 ft at 10:18PM Apr 16, 2024Observed: 2.56 ft at 10:30PM Apr 16, 2024Observed: 2.52 ft at 10:36PM Apr 16, 2024Observed: 1.86 ft at 11:42PM Apr 16, 2024Observed: 1.8 ft at 11:48PM Apr 16, 2024Observed: 1.73 ft at 12:00AM Apr 17, 2024Observed: 1.67 ft at 12:06AM Apr 17, 2024Observed: 1.44 ft at 12:30AM Apr 17, 2024Observed: 1.38 ft at 12:36AM Apr 17, 2024Observed: 1.31 ft at 12:42AM Apr 17, 2024Observed: 1.28 ft at 12:48AM Apr 17, 2024Observed: 1.13 ft at 1:42AM Apr 17, 2024Observed: 1.16 ft at 1:48AM Apr 17, 2024Observed: 1.19 ft at 2:00AM Apr 17, 2024Observed: 1.27 ft at 2:06AM Apr 17, 2024Observed: 1.53 ft at 3:00AM Apr 17, 2024Observed: 1.56 ft at 3:06AM Apr 17, 2024Observed: 1.69 ft at 3:24AM Apr 17, 2024Observed: 1.84 ft at 3:42AM Apr 17, 2024Observed: 1.89 ft at 3:48AM Apr 17, 2024Observed: 1.99 ft at 4:00AM Apr 17, 2024Observed: 2.03 ft at 4:06AM Apr 17, 2024Observed: 2.44 ft at 5:00AM Apr 17, 2024Observed: 2.47 ft at 5:06AM Apr 17, 2024Observed: 2.67 ft at 5:30AM Apr 17, 2024Observed: 2.71 ft at 5:36AM Apr 17, 2024Observed: 2.96 ft at 6:00AM Apr 17, 2024Observed: 3.02 ft at 6:06AM Apr 17, 2024Observed: 3.22 ft at 6:30AM Apr 17, 2024Observed: 3.27 ft at 6:36AM Apr 17, 2024Observed: 3.53 ft at 7:24AM Apr 17, 2024Observed: 3.63 ft at 8:00AM Apr 17, 2024Observed: 3.62 ft at 8:06AM Apr 17, 2024Observed: 3.48 ft at 9:12AM Apr 17, 2024Observed: 3.44 ft at 9:18AM Apr 17, 2024Observed: 3.16 ft at 10:00AM Apr 17, 2024Observed: 3.12 ft at 10:06AM Apr 17, 2024Observed: 2.33 ft at 11:24AM Apr 17, 2024Observed: 2.29 ft at 11:30AM Apr 17, 2024Observed: 2.22 ft at 11:36AM Apr 17, 2024Observed: 2.13 ft at 11:42AM Apr 17, 2024Observed: 2.05 ft at 11:48AM Apr 17, 2024Observed: 1.97 ft at 11:54AM Apr 17, 2024Observed: 1.91 ft at 12:00PM Apr 17, 2024Observed: 1.85 ft at 12:06PM Apr 17, 2024Observed: 1.76 ft at 12:12PM Apr 17, 2024Observed: 1.69 ft at 12:18PM Apr 17, 2024Observed: 1.6 ft at 12:24PM Apr 17, 2024Observed: 1.53 ft at 12:30PM Apr 17, 2024Observed: 1.47 ft at 12:36PM Apr 17, 2024Observed: 1.4 ft at 12:42PM Apr 17, 2024Observed: 1.34 ft at 12:48PM Apr 17, 2024Observed: 1.29 ft at 12:54PM Apr 17, 2024Observed: 1.22 ft at 1:00PM Apr 17, 2024Observed: 1.18 ft at 1:06PM Apr 17, 2024Observed: 1.15 ft at 1:12PM Apr 17, 2024Observed: 1.07 ft at 1:18PM Apr 17, 2024Observed: 1.02 ft at 1:24PM Apr 17, 2024Observed: 0.97 ft at 1:30PM Apr 17, 2024Observed: 0.94 ft at 1:36PM Apr 17, 2024Observed: 0.9 ft at 1:42PM Apr 17, 2024Observed: 0.85 ft at 1:48PM Apr 17, 2024Observed: 0.79 ft at 1:54PM Apr 17, 2024Observed: 0.76 ft at 2:00PM Apr 17, 2024Observed: 0.74 ft at 2:06PM Apr 17, 2024Observed: 0.74 ft at 2:12PM Apr 17, 2024Observed: 0.74 ft at 2:18PM Apr 17, 2024Observed: 0.76 ft at 2:24PM Apr 17, 2024Observed: 0.82 ft at 2:30PM Apr 17, 2024Observed: 0.83 ft at 2:36PM Apr 17, 2024Observed: 0.84 ft at 2:42PM Apr 17, 2024Observed: 0.85 ft at 2:48PM Apr 17, 2024Observed: 0.84 ft at 2:54PM Apr 17, 2024Observed: 0.86 ft at 3:00PM Apr 17, 2024Observed: 0.84 ft at 3:06PM Apr 17, 2024Observed: 0.86 ft at 3:12PM Apr 17, 2024Observed: 0.88 ft at 3:18PM Apr 17, 2024Observed: 0.92 ft at 3:24PM Apr 17, 2024Observed: 0.96 ft at 3:30PM Apr 17, 2024Observed: 1.01 ft at 3:36PM Apr 17, 2024Observed: 1.03 ft at 3:42PM Apr 17, 2024Observed: 1.04 ft at 3:48PM Apr 17, 2024Observed: 1.07 ft at 3:54PM Apr 17, 2024Observed: 1.11 ft at 4:00PM Apr 17, 2024Observed: 1.14 ft at 4:06PM Apr 17, 2024Observed: 1.17 ft at 4:12PM Apr 17, 2024Observed: 1.22 ft at 4:18PM Apr 17, 2024Observed: 1.26 ft at 4:24PM Apr 17, 2024Observed: 1.31 ft at 4:30PM Apr 17, 2024Observed: 1.35 ft at 4:36PM Apr 17, 2024Observed: 1.39 ft at 4:42PM Apr 17, 2024Observed: 1.44 ft at 4:48PM Apr 17, 2024Observed: 1.47 ft at 4:54PM Apr 17, 2024Observed: 1.53 ft at 5:00PM Apr 17, 2024Observed: 1.6 ft at 5:06PM Apr 17, 2024Observed: 1.64 ft at 5:12PM Apr 17, 2024Observed: 1.67 ft at 5:18PM Apr 17, 2024Observed: 1.73 ft at 5:24PM Apr 17, 2024Observed: 1.77 ft at 5:30PM Apr 17, 2024Observed: 1.82 ft at 5:36PM Apr 17, 2024Observed: 1.88 ft at 5:42PM Apr 17, 2024Observed: 1.93 ft at 5:48PM Apr 17, 2024Observed: 1.99 ft at 5:54PM Apr 17, 2024Observed: 2.04 ft at 6:00PM Apr 17, 2024Observed: 2.07 ft at 6:06PM Apr 17, 2024Observed: 2.11 ft at 6:12PM Apr 17, 2024Observed: 2.17 ft at 6:18PM Apr 17, 2024Observed: 2.23 ft at 6:24PM Apr 17, 2024Observed: 2.29 ft at 6:30PM Apr 17, 2024Observed: 2.38 ft at 6:36PM Apr 17, 2024Observed: 2.45 ft at 6:42PM Apr 17, 2024Observed: 2.48 ft at 6:48PM Apr 17, 2024Observed: 2.52 ft at 6:54PM Apr 17, 2024Observed: 2.58 ft at 7:00PM Apr 17, 2024Observed: 2.64 ft at 7:06PM Apr 17, 2024Observed: 2.68 ft at 7:12PM Apr 17, 2024Observed: 2.69 ft at 7:18PM Apr 17, 2024Observed: 2.72 ft at 7:24PM Apr 17, 2024Observed: 2.74 ft at 7:30PM Apr 17, 2024Observed: 2.76 ft at 7:36PM Apr 17, 2024Observed: 2.82 ft at 7:42PM Apr 17, 2024Observed: 2.85 ft at 7:48PM Apr 17, 2024Observed: 2.97 ft at 8:00PM Apr 17, 2024Observed: 2.99 ft at 8:06PM Apr 17, 2024Observed: 3.05 ft at 8:12PM Apr 17, 2024Observed: 3.1 ft at 8:18PM Apr 17, 2024Observed: 3.12 ft at 8:24PM Apr 17, 2024Observed: 3.14 ft at 8:30PM Apr 17, 2024Observed: 3.18 ft at 8:36PM Apr 17, 2024Observed: 3.18 ft at 8:42PM Apr 17, 2024Observed: 3.22 ft at 8:48PM Apr 17, 2024Observed: 3.2 ft at 8:54PM Apr 17, 2024Observed: 3.2 ft at 9:00PM Apr 17, 2024Observed: 3.18 ft at 9:06PM Apr 17, 2024Observed: 3.19 ft at 9:12PM Apr 17, 2024Observed: 3.2 ft at 9:18PM Apr 17, 2024Observed: 3.18 ft at 9:24PM Apr 17, 2024Observed: 3.14 ft at 9:30PM Apr 17, 2024Observed: 3.17 ft at 9:36PM Apr 17, 2024Observed: 3.16 ft at 9:42PM Apr 17, 2024Observed: 3.17 ft at 9:48PM Apr 17, 2024Observed: 3.16 ft at 9:54PM Apr 17, 2024Observed: 3.11 ft at 10:00PM Apr 17, 2024Observed: 3.08 ft at 10:06PM Apr 17, 2024Observed: 3.05 ft at 10:12PM Apr 17, 2024Observed: 3.06 ft at 10:18PM Apr 17, 2024Observed: 2.99 ft at 10:24PM Apr 17, 2024Observed: 2.9 ft at 10:30PM Apr 17, 2024Observed: 2.87 ft at 10:36PM Apr 17, 2024Observed: 2.83 ft at 10:42PM Apr 17, 2024Observed: 2.83 ft at 10:48PM Apr 17, 2024Observed: 2.82 ft at 10:54PM Apr 17, 2024Observed: 2.78 ft at 11:00PM Apr 17, 2024Observed: 2.75 ft at 11:06PM Apr 17, 2024Observed: 2.69 ft at 11:12PM Apr 17, 2024Observed: 2.6 ft at 11:18PM Apr 17, 2024Observed: 2.53 ft at 11:24PM Apr 17, 2024Observed: 2.44 ft at 11:30PM Apr 17, 2024Observed: 2.36 ft at 11:36PM Apr 17, 2024Observed: 2.31 ft at 11:42PM Apr 17, 2024Observed: 2.27 ft at 11:48PM Apr 17, 2024Observed: 2.23 ft at 11:54PM Apr 17, 2024Observed: 2.18 ft at 12:00AM Apr 18, 2024Observed: 2.15 ft at 12:06AM Apr 18, 2024Observed: 2.11 ft at 12:12AM Apr 18, 2024Observed: 2.03 ft at 12:18AM Apr 18, 2024Observed: 1.94 ft at 12:24AM Apr 18, 2024Observed: 1.88 ft at 12:30AM Apr 18, 2024Observed: 1.8 ft at 12:36AM Apr 18, 2024Observed: 1.73 ft at 12:42AM Apr 18, 2024Observed: 1.7 ft at 12:48AM Apr 18, 2024Observed: 1.66 ft at 12:54AM Apr 18, 2024Observed: 1.61 ft at 1:00AM Apr 18, 2024Observed: 1.56 ft at 1:06AM Apr 18, 2024Observed: 1.49 ft at 1:12AM Apr 18, 2024Observed: 1.45 ft at 1:18AM Apr 18, 2024Observed: 1.38 ft at 1:24AM Apr 18, 2024Observed: 1.34 ft at 1:30AM Apr 18, 2024Observed: 1.3 ft at 1:36AM Apr 18, 2024Observed: 1.26 ft at 1:42AM Apr 18, 2024Observed: 1.26 ft at 1:48AM Apr 18, 2024Observed: 1.29 ft at 1:54AM Apr 18, 2024Observed: 1.22 ft at 2:00AM Apr 18, 2024Observed: 1.17 ft at 2:06AM Apr 18, 2024Observed: 1.21 ft at 2:12AM Apr 18, 2024Observed: 1.18 ft at 2:18AM Apr 18, 2024Observed: 1.14 ft at 2:24AM Apr 18, 2024Observed: 1.15 ft at 2:30AM Apr 18, 2024Observed: 1.14 ft at 2:36AM Apr 18, 2024Observed: 1.18 ft at 2:42AM Apr 18, 2024Observed: 1.22 ft at 2:48AM Apr 18, 2024Observed: 1.27 ft at 2:54AM Apr 18, 2024Observed: 1.34 ft at 3:00AM Apr 18, 2024Observed: 1.35 ft at 3:06AM Apr 18, 2024Observed: 1.27 ft at 3:12AM Apr 18, 2024Observed: 1.24 ft at 3:18AM Apr 18, 2024Observed: 1.24 ft at 3:24AM Apr 18, 2024Observed: 1.24 ft at 3:30AM Apr 18, 2024Observed: 1.33 ft at 3:36AM Apr 18, 2024Observed: 1.41 ft at 3:42AM Apr 18, 2024Observed: 1.49 ft at 3:48AM Apr 18, 2024Observed: 1.52 ft at 3:54AM Apr 18, 2024Observed: 1.58 ft at 4:00AM Apr 18, 2024Observed: 1.65 ft at 4:06AM Apr 18, 2024Observed: 1.66 ft at 4:12AM Apr 18, 2024Observed: 1.68 ft at 4:18AM Apr 18, 2024Observed: 1.74 ft at 4:24AM Apr 18, 2024Observed: 1.77 ft at 4:30AM Apr 18, 2024Observed: 1.78 ft at 4:36AM Apr 18, 2024Observed: 1.81 ft at 4:42AM Apr 18, 2024Observed: 1.84 ft at 4:48AM Apr 18, 2024Observed: 1.86 ft at 4:54AM Apr 18, 2024Observed: 1.93 ft at 5:00AM Apr 18, 2024Observed: 2.01 ft at 5:06AM Apr 18, 2024Observed: 2.07 ft at 5:12AM Apr 18, 2024Observed: 2.17 ft at 5:18AM Apr 18, 2024Observed: 2.25 ft at 5:24AM Apr 18, 2024Observed: 2.3 ft at 5:30AM Apr 18, 2024Observed: 2.33 ft at 5:36AM Apr 18, 2024Observed: 2.35 ft at 5:42AM Apr 18, 2024Observed: 2.42 ft at 5:48AM Apr 18, 2024Observed: 2.49 ft at 5:54AM Apr 18, 2024Observed: 2.51 ft at 6:00AM Apr 18, 2024Observed: 2.54 ft at 6:06AM Apr 18, 2024Observed: 2.59 ft at 6:12AM Apr 18, 2024Observed: 2.65 ft at 6:18AM Apr 18, 2024Observed: 2.74 ft at 6:24AM Apr 18, 2024Observed: 2.81 ft at 6:30AM Apr 18, 2024Observed: 2.84 ft at 6:36AM Apr 18, 2024Observed: 3.02 ft at 6:54AM Apr 18, 2024Observed: 3.04 ft at 7:00AM Apr 18, 2024Observed: 3.07 ft at 7:06AM Apr 18, 2024Observed: 3.09 ft at 7:12AM Apr 18, 2024Observed: 3.12 ft at 7:18AM Apr 18, 2024Observed: 3.17 ft at 7:24AM Apr 18, 2024Observed: 3.26 ft at 7:30AM Apr 18, 2024Observed: 3.34 ft at 7:36AM Apr 18, 2024Observed: 3.38 ft at 7:42AM Apr 18, 2024Observed: 3.39 ft at 7:48AM Apr 18, 2024Observed: 3.43 ft at 7:54AM Apr 18, 2024Observed: 3.45 ft at 8:00AM Apr 18, 2024Observed: 3.49 ft at 8:06AM Apr 18, 2024Observed: 3.51 ft at 8:12AM Apr 18, 2024Observed: 3.49 ft at 8:18AM Apr 18, 2024Observed: 3.46 ft at 8:24AM Apr 18, 2024Observed: 3.48 ft at 8:30AM Apr 18, 2024Observed: 3.55 ft at 8:36AM Apr 18, 2024Observed: 3.61 ft at 8:42AM Apr 18, 2024Observed: 3.66 ft at 8:48AM Apr 18, 2024Observed: 3.68 ft at 8:54AM Apr 18, 2024Observed: 3.67 ft at 9:00AM Apr 18, 2024Observed: 3.71 ft at 9:06AM Apr 18, 2024Observed: 3.74 ft at 9:12AM Apr 18, 2024Observed: 3.76 ft at 9:18AM Apr 18, 2024Observed: 3.73 ft at 9:24AM Apr 18, 2024Observed: 3.69 ft at 9:30AM Apr 18, 2024Observed: 3.66 ft at 9:36AM Apr 18, 2024Observed: 3.64 ft at 9:42AM Apr 18, 2024Observed: 3.65 ft at 9:48AM Apr 18, 2024Observed: 3.69 ft at 9:54AM Apr 18, 2024Observed: 3.65 ft at 10:00AM Apr 18, 2024Observed: 3.6 ft at 10:06AM Apr 18, 2024Observed: 3.59 ft at 10:12AM Apr 18, 2024Observed: 3.59 ft at 10:18AM Apr 18, 2024Observed: 3.58 ft at 10:24AM Apr 18, 2024Observed: 3.57 ft at 10:30AM Apr 18, 2024Observed: 3.53 ft at 10:36AM Apr 18, 2024Observed: 3.47 ft at 10:42AM Apr 18, 2024Observed: 3.44 ft at 10:48AM Apr 18, 2024Observed: 3.43 ft at 10:54AM Apr 18, 2024Observed: 3.39 ft at 11:00AM Apr 18, 2024Observed: 3.35 ft at 11:06AM Apr 18, 2024Observed: 3.29 ft at 11:12AM Apr 18, 2024Observed: 3.24 ft at 11:18AM Apr 18, 2024Observed: 3.19 ft at 11:24AM Apr 18, 2024Observed: 3.13 ft at 11:30AM Apr 18, 2024Observed: 3.07 ft at 11:36AM Apr 18, 2024Observed: 3 ft at 11:42AM Apr 18, 2024Observed: 2.92 ft at 11:48AM Apr 18, 2024Observed: 2.86 ft at 11:54AM Apr 18, 2024Observed: 2.8 ft at 12:00PM Apr 18, 2024Observed: 2.71 ft at 12:06PM Apr 18, 2024Observed: 2.67 ft at 12:12PM Apr 18, 2024Observed: 2.62 ft at 12:18PM Apr 18, 2024Observed: 2.54 ft at 12:24PM Apr 18, 2024Observed: 2.47 ft at 12:30PM Apr 18, 2024Observed: 2.42 ft at 12:36PM Apr 18, 2024Observed: 2.36 ft at 12:42PM Apr 18, 2024Observed: 2.31 ft at 12:48PM Apr 18, 2024Observed: 2.25 ft at 12:54PM Apr 18, 2024Observed: 2.18 ft at 1:00PM Apr 18, 2024Observed: 2.1 ft at 1:06PM Apr 18, 2024Observed: 2 ft at 1:12PM Apr 18, 2024Observed: 1.93 ft at 1:18PM Apr 18, 2024Observed: 1.86 ft at 1:24PM Apr 18, 2024Observed: 1.77 ft at 1:30PM Apr 18, 2024Observed: 1.71 ft at 1:36PM Apr 18, 2024Observed: 1.67 ft at 1:42PM Apr 18, 2024Observed: 1.57 ft at 1:48PM Apr 18, 2024Observed: 1.5 ft at 1:54PM Apr 18, 2024Observed: 1.44 ft at 2:00PM Apr 18, 2024Observed: 1.39 ft at 2:06PM Apr 18, 2024Observed: 1.33 ft at 2:12PM Apr 18, 2024Observed: 1.27 ft at 2:18PM Apr 18, 2024Observed: 1.23 ft at 2:24PM Apr 18, 2024Observed: 1.18 ft at 2:30PM Apr 18, 2024Observed: 1.12 ft at 2:36PM Apr 18, 2024Observed: 1.09 ft at 2:42PM Apr 18, 2024Observed: 1.09 ft at 2:48PM Apr 18, 2024Observed: 1.07 ft at 2:54PM Apr 18, 2024Observed: 1.06 ft at 3:00PM Apr 18, 2024Observed: 1.07 ft at 3:06PM Apr 18, 2024Observed: 1.07 ft at 3:12PM Apr 18, 2024Observed: 1.07 ft at 3:18PM Apr 18, 2024Observed: 1.07 ft at 3:24PM Apr 18, 2024Observed: 1.06 ft at 3:30PM Apr 18, 2024Observed: 1.05 ft at 3:36PM Apr 18, 2024Observed: 1.03 ft at 3:42PM Apr 18, 2024Observed: 1.04 ft at 3:48PM Apr 18, 2024Observed: 1.08 ft at 3:54PM Apr 18, 2024Observed: 1.11 ft at 4:00PM Apr 18, 2024Observed: 1.12 ft at 4:06PM Apr 18, 2024Observed: 1.15 ft at 4:12PM Apr 18, 2024Observed: 1.18 ft at 4:18PM Apr 18, 2024Observed: 1.22 ft at 4:24PM Apr 18, 2024Observed: 1.26 ft at 4:30PM Apr 18, 2024Observed: 1.32 ft at 4:36PM Apr 18, 2024Observed: 1.38 ft at 4:42PM Apr 18, 2024Observed: 1.44 ft at 4:48PM Apr 18, 2024Observed: 1.49 ft at 4:54PM Apr 18, 2024Observed: 1.55 ft at 5:00PM Apr 18, 2024Observed: 1.59 ft at 5:06PM Apr 18, 2024Observed: 1.61 ft at 5:12PM Apr 18, 2024Observed: 1.63 ft at 5:18PM Apr 18, 2024Observed: 1.68 ft at 5:24PM Apr 18, 2024Observed: 1.72 ft at 5:30PM Apr 18, 2024Observed: 1.77 ft at 5:36PM Apr 18, 2024Observed: 1.83 ft at 5:42PM Apr 18, 2024Observed: 1.88 ft at 5:48PM Apr 18, 2024Observed: 1.91 ft at 5:54PM Apr 18, 2024Observed: 1.95 ft at 6:00PM Apr 18, 2024Observed: 1.98 ft at 6:06PM Apr 18, 2024Observed: 2.02 ft at 6:12PM Apr 18, 2024Observed: 2.07 ft at 6:18PM Apr 18, 2024Observed: 2.13 ft at 6:24PM Apr 18, 2024Observed: 2.19 ft at 6:30PM Apr 18, 2024Observed: 2.24 ft at 6:36PM Apr 18, 2024Observed: 2.3 ft at 6:42PM Apr 18, 2024Observed: 2.34 ft at 6:48PM Apr 18, 2024Observed: 2.4 ft at 6:54PM Apr 18, 2024Observed: 2.45 ft at 7:00PM Apr 18, 2024Observed: 2.49 ft at 7:06PM Apr 18, 2024Observed: 2.53 ft at 7:12PM Apr 18, 2024Observed: 2.55 ft at 7:18PM Apr 18, 2024Observed: 2.6 ft at 7:24PM Apr 18, 2024Observed: 2.63 ft at 7:30PM Apr 18, 2024Observed: 2.64 ft at 7:36PM Apr 18, 2024Observed: 2.68 ft at 7:42PM Apr 18, 2024Observed: 2.72 ft at 7:48PM Apr 18, 2024Observed: 2.83 ft at 8:00PM Apr 18, 2024Observed: 2.87 ft at 8:06PM Apr 18, 2024Observed: 2.93 ft at 8:12PM Apr 18, 2024Observed: 2.99 ft at 8:18PM Apr 18, 2024Observed: 3.03 ft at 8:24PM Apr 18, 2024Observed: 3.06 ft at 8:30PM Apr 18, 2024Observed: 3.1 ft at 8:36PM Apr 18, 2024Observed: 3.11 ft at 8:42PM Apr 18, 2024Observed: 3.13 ft at 8:48PM Apr 18, 2024Observed: 3.15 ft at 8:54PM Apr 18, 2024Observed: 3.15 ft at 9:00PM Apr 18, 2024Observed: 3.16 ft at 9:06PM Apr 18, 2024Observed: 3.19 ft at 9:12PM Apr 18, 2024Observed: 3.23 ft at 9:18PM Apr 18, 2024Observed: 3.27 ft at 9:24PM Apr 18, 2024Observed: 3.3 ft at 9:30PM Apr 18, 2024Observed: 3.33 ft at 9:36PM Apr 18, 2024Observed: 3.33 ft at 9:42PM Apr 18, 2024Observed: 3.29 ft at 9:48PM Apr 18, 2024Observed: 3.27 ft at 9:54PM Apr 18, 2024Observed: 3.29 ft at 10:00PM Apr 18, 2024Observed: 3.3 ft at 10:06PM Apr 18, 2024Observed: 3.31 ft at 10:12PM Apr 18, 2024Observed: 3.32 ft at 10:18PM Apr 18, 2024Observed: 3.27 ft at 10:24PM Apr 18, 2024Observed: 3.28 ft at 10:30PM Apr 18, 2024Observed: 3.27 ft at 10:36PM Apr 18, 2024Observed: 3.26 ft at 10:42PM Apr 18, 2024Observed: 3.29 ft at 10:48PM Apr 18, 2024Observed: 3.28 ft at 10:54PM Apr 18, 2024Observed: 3.25 ft at 11:00PM Apr 18, 2024Observed: 3.24 ft at 11:06PM Apr 18, 2024Observed: 3.26 ft at 11:12PM Apr 18, 2024Observed: 3.25 ft at 11:18PM Apr 18, 2024Observed: 3.2 ft at 11:24PM Apr 18, 2024Observed: 3.17 ft at 11:30PM Apr 18, 2024Observed: 3.11 ft at 11:36PM Apr 18, 2024Observed: 3.07 ft at 11:42PM Apr 18, 2024Observed: 3.08 ft at 11:48PM Apr 18, 2024Observed: 3.09 ft at 11:54PM Apr 18, 2024Observed: 3.05 ft at 12:00AM Apr 19, 2024Observed: 2.99 ft at 12:06AM Apr 19, 2024Observed: 2.93 ft at 12:12AM Apr 19, 2024Observed: 2.9 ft at 12:18AM Apr 19, 2024Observed: 2.83 ft at 12:24AM Apr 19, 2024Observed: 2.79 ft at 12:30AM Apr 19, 2024Observed: 2.74 ft at 12:36AM Apr 19, 2024Observed: 2.65 ft at 12:42AM Apr 19, 2024Observed: 2.57 ft at 12:48AM Apr 19, 2024Observed: 2.49 ft at 12:54AM Apr 19, 2024Observed: 2.43 ft at 1:00AM Apr 19, 2024Observed: 2.39 ft at 1:06AM Apr 19, 2024Observed: 2.34 ft at 1:12AM Apr 19, 2024Observed: 2.3 ft at 1:18AM Apr 19, 2024Observed: 2.23 ft at 1:24AM Apr 19, 2024Observed: 2.13 ft at 1:30AM Apr 19, 2024Observed: 2.05 ft at 1:36AM Apr 19, 2024Observed: 1.98 ft at 1:42AM Apr 19, 2024Observed: 1.92 ft at 1:48AM Apr 19, 2024Observed: 1.87 ft at 1:54AM Apr 19, 2024Observed: 1.83 ft at 2:00AM Apr 19, 2024Observed: 1.77 ft at 2:06AM Apr 19, 2024Forecast: 1.7 ft 3:00AM Apr 19, 2024Forecast: 1.7 ft 4:00AM Apr 19, 2024Forecast: 1.8 ft 5:00AM Apr 19, 2024Forecast: 2.2 ft 6:00AM Apr 19, 2024Forecast: 2.7 ft 7:00AM Apr 19, 2024Forecast: 3.2 ft 8:00AM Apr 19, 2024Forecast: 3.6 ft 9:00AM Apr 19, 2024Highest Forecast: 3.9 ft 10:00AM Apr 19, 2024Forecast: 3.8 ft 11:00AM Apr 19, 2024Forecast: 3.3 ft 12:00PM Apr 19, 2024Forecast: 2.8 ft 1:00PM Apr 19, 2024Forecast: 2.2 ft 2:00PM Apr 19, 2024Forecast: 1.8 ft 3:00PM Apr 19, 2024Forecast: 1.6 ft 4:00PM Apr 19, 2024Forecast: 1.7 ft 5:00PM Apr 19, 2024Forecast: 2.1 ft 6:00PM Apr 19, 2024Forecast: 2.5 ft 7:00PM Apr 19, 2024Forecast: 3 ft 8:00PM Apr 19, 2024Forecast: 3.4 ft 9:00PM Apr 19, 2024Forecast: 3.6 ft 10:00PM Apr 19, 2024Forecast: 3.7 ft 11:00PM Apr 19, 2024Forecast: 3.4 ft 12:00AM Apr 20, 2024Forecast: 3 ft 1:00AM Apr 20, 2024Forecast: 2.4 ft 2:00AM Apr 20, 2024Forecast: 1.8 ft 3:00AM Apr 20, 2024Forecast: 1.5 ft 4:00AM Apr 20, 2024Forecast: 1.5 ft 5:00AM Apr 20, 2024Forecast: 1.8 ft 6:00AM Apr 20, 2024Forecast: 2.2 ft 7:00AM Apr 20, 2024Forecast: 2.8 ft 8:00AM Apr 20, 2024Forecast: 3.3 ft 9:00AM Apr 20, 2024Forecast: 3.6 ft 10:00AM Apr 20, 2024Forecast: 3.7 ft 11:00AM Apr 20, 2024Forecast: 3.6 ft 12:00PM Apr 20, 2024Forecast: 3.2 ft 1:00PM Apr 20, 2024Forecast: 2.6 ft 2:00PM Apr 20, 2024Forecast: 2 ft 3:00PM Apr 20, 2024Forecast: 1.5 ft 4:00PM Apr 20, 2024Forecast: 1.6 ft 5:00PM Apr 20, 2024Forecast: 1.8 ft 6:00PM Apr 20, 2024Forecast: 2.2 ft 7:00PM Apr 20, 2024Forecast: 2.6 ft 8:00PM Apr 20, 2024Forecast: 3.1 ft 9:00PM Apr 20, 2024Forecast: 3.6 ft 10:00PM Apr 20, 2024Forecast: 3.8 ft 11:00PM Apr 20, 2024Forecast: 3.6 ft 12:00AM Apr 21, 2024Forecast: 3.3 ft 1:00AM Apr 21, 2024Forecast: 2.7 ft 2:00AM Apr 21, 2024Forecast: 2 ft 3:00AM Apr 21, 2024Forecast: 1.5 ft 4:00AM Apr 21, 2024Forecast: 1.3 ft 5:00AM Apr 21, 2024Forecast: 1.3 ft 6:00AM Apr 21, 2024Forecast: 1.6 ft 7:00AM Apr 21, 2024Forecast: 2.1 ft 8:00AM Apr 21, 2024Forecast: 2.6 ft 9:00AM Apr 21, 2024Forecast: 3.1 ft 10:00AM Apr 21, 2024Forecast: 3.4 ft 11:00AM Apr 21, 2024Forecast: 3.5 ft 12:00PM Apr 21, 2024Forecast: 3.3 ft 1:00PM Apr 21, 2024Forecast: 2.8 ft 2:00PM Apr 21, 2024Forecast: 2.2 ft 3:00PM Apr 21, 2024Data courtesy of NOAA National Ocean ServiceNTKM3(plotting HMIRG) Graph Created (2:30AM Apr 19, 2024)ObservedForecast (issued 4:04PM Apr 18)Latest observed value: 1.77 ft at 2:06 AM EDT 19-Apr-2024. Flood Stage is 5 ft
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Tabular Data (UTC)
Tabular Data (EDT)
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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 .

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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) 6.37 ft on 01/13/2024
(9) 6.34 ft on 01/30/2018
(10) 6.34 ft on 01/02/1987
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 5.42 ft on 03/10/2024
(2) 5.07 ft on 03/08/2024
(3) 5.18 ft on 02/14/2024
(4) 5.89 ft on 02/13/2024
(5) 5.18 ft on 02/10/2024
(6) 5.09 ft on 02/05/2024
(7) 5.02 ft on 01/29/2024
(8) 6.37 ft on 01/13/2024
(9) 5.10 ft on 01/11/2024
(10) 6.16 ft on 01/10/2024
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
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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 This is a degree of flooding never experienced before. Life threatening flooding affects roads around Nantucket Harbor and in the Downtown Historic District with flooding more than 3 feet deep. Many road closures and some evacuations can be expected. Flooding also impacts the Atlantic Avenue area on the south side of the island. Large surf will also result in significant beach erosion and debris on coastal roads.
8 This is a degree of flooding rarely seen. Life threatening flooding more than 3 feet deep affects many roads around Nantucket Harbor and in the Downtown Historic District. Road closures and some evacuations can be expected. Flooding also impacts the Atlantic Avenue area on the south side of the island. Large surf will also result in significant beach erosion and debris on coastal roads.
7 Many roads near Nantucket Harbor and in the Downtown Historic District become impassable with 2 to 3 feet of water and affects access to the ferry terminals. Flooding affects Easy Street, South Beach Street, Easton Street, Walsh Street, Willard Street, and Straight Wharf.
6 Many roads near Nantucket Harbor become impassable with 1 to 2 feet of water and affects access to the ferry terminals. This includes Easy Street, South Beach Street, Easton Street, Walsh Street, Willard Street, and Straight Wharf.
5 Roads remain passable. Low lying areas and roads near Nantucket Harbor, including Easy Street, may experience pockets of shallow flooding less than one foot deep.
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).
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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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