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Hydrograph River at a Glance Download
Cooper River at Charleston Harbor (IN MLLW) Tide Height (ft)Observed: 4.16 ft at 5:36PM May 23, 2024Observed: 4.33 ft at 5:42PM May 23, 2024Observed: 4.46 ft at 5:48PM May 23, 2024Observed: 4.59 ft at 5:54PM May 23, 2024Observed: 4.69 ft at 6:00PM May 23, 2024Observed: 4.8 ft at 6:06PM May 23, 2024Observed: 4.91 ft at 6:12PM May 23, 2024Observed: 5.03 ft at 6:18PM May 23, 2024Observed: 5.14 ft at 6:24PM May 23, 2024Observed: 5.24 ft at 6:30PM May 23, 2024Observed: 5.33 ft at 6:36PM May 23, 2024Observed: 5.44 ft at 6:42PM May 23, 2024Observed: 5.53 ft at 6:48PM May 23, 2024Observed: 5.63 ft at 6:54PM May 23, 2024Observed: 5.72 ft at 7:00PM May 23, 2024Observed: 5.83 ft at 7:06PM May 23, 2024Observed: 5.91 ft at 7:12PM May 23, 2024Observed: 6.03 ft at 7:24PM May 23, 2024Observed: 6.11 ft at 7:30PM May 23, 2024Observed: 6.15 ft at 7:36PM May 23, 2024Observed: 6.22 ft at 7:42PM May 23, 2024Observed: 6.26 ft at 7:48PM May 23, 2024Observed: 6.4 ft at 8:06PM May 23, 2024Observed: 6.44 ft at 8:12PM May 23, 2024Observed: 6.49 ft at 8:18PM May 23, 2024Observed: 6.53 ft at 8:24PM May 23, 2024Observed: 6.56 ft at 8:30PM May 23, 2024Observed: 6.61 ft at 8:36PM May 23, 2024Observed: 6.64 ft at 8:42PM May 23, 2024Observed: 6.65 ft at 8:48PM May 23, 2024Highest Observation: 6.71 ft at 8:54PM May 23, 2024Observed: 6.7 ft at 9:00PM May 23, 2024Observed: 6.67 ft at 9:06PM May 23, 2024Observed: 6.64 ft at 9:12PM May 23, 2024Observed: 6.6 ft at 9:18PM May 23, 2024Observed: 6.55 ft at 9:24PM May 23, 2024Observed: 6.57 ft at 9:30PM May 23, 2024Observed: 6.52 ft at 9:36PM May 23, 2024Observed: 6.47 ft at 9:42PM May 23, 2024Observed: 6.42 ft at 9:48PM May 23, 2024Observed: 6.36 ft at 9:54PM May 23, 2024Observed: 6.29 ft at 10:00PM May 23, 2024Observed: 6.22 ft at 10:06PM May 23, 2024Observed: 6.14 ft at 10:12PM May 23, 2024Observed: 6.04 ft at 10:18PM May 23, 2024Observed: 5.93 ft at 10:24PM May 23, 2024Observed: 5.82 ft at 10:30PM May 23, 2024Observed: 5.73 ft at 10:36PM May 23, 2024Observed: 5.64 ft at 10:42PM May 23, 2024Observed: 5.53 ft at 10:48PM May 23, 2024Observed: 5.43 ft at 10:54PM May 23, 2024Observed: 5.33 ft at 11:00PM May 23, 2024Observed: 5.23 ft at 11:06PM May 23, 2024Observed: 5.12 ft at 11:12PM May 23, 2024Observed: 5.02 ft at 11:18PM May 23, 2024Observed: 4.89 ft at 11:24PM May 23, 2024Observed: 4.76 ft at 11:30PM May 23, 2024Observed: 4.64 ft at 11:36PM May 23, 2024Observed: 4.51 ft at 11:42PM May 23, 2024Observed: 4.37 ft at 11:48PM May 23, 2024Observed: 4.22 ft at 11:54PM May 23, 2024Observed: 4.07 ft at 12:00AM May 24, 2024Observed: 3.94 ft at 12:06AM May 24, 2024Observed: 3.8 ft at 12:12AM May 24, 2024Observed: 3.67 ft at 12:18AM May 24, 2024Observed: 3.43 ft at 12:30AM May 24, 2024Observed: 3.31 ft at 12:36AM May 24, 2024Observed: 3.18 ft at 12:42AM May 24, 2024Observed: 3.05 ft at 12:48AM May 24, 2024Observed: 2.91 ft at 12:54AM May 24, 2024Observed: 2.77 ft at 1:00AM May 24, 2024Observed: 2.63 ft at 1:06AM May 24, 2024Observed: 2.49 ft at 1:12AM May 24, 2024Observed: 2.38 ft at 1:18AM May 24, 2024Observed: 2.27 ft at 1:24AM May 24, 2024Observed: 2.16 ft at 1:30AM May 24, 2024Observed: 2.03 ft at 1:36AM May 24, 2024Observed: 1.92 ft at 1:42AM May 24, 2024Observed: 1.8 ft at 1:48AM May 24, 2024Observed: 1.69 ft at 1:54AM May 24, 2024Observed: 1.58 ft at 2:00AM May 24, 2024Observed: 1.47 ft at 2:06AM May 24, 2024Observed: 1.35 ft at 2:12AM May 24, 2024Observed: 1.24 ft at 2:18AM May 24, 2024Observed: 1.14 ft at 2:24AM May 24, 2024Observed: 1.08 ft at 2:30AM May 24, 2024Observed: 1.01 ft at 2:36AM May 24, 2024Observed: 0.95 ft at 2:42AM May 24, 2024Observed: 0.92 ft at 2:48AM May 24, 2024Observed: 0.87 ft at 2:54AM May 24, 2024Observed: 0.8 ft at 3:00AM May 24, 2024Observed: 0.75 ft at 3:06AM May 24, 2024Observed: 0.73 ft at 3:12AM May 24, 2024Observed: 0.71 ft at 3:18AM May 24, 2024Observed: 0.68 ft at 3:24AM May 24, 2024Observed: 0.7 ft at 3:30AM May 24, 2024Observed: 0.72 ft at 3:36AM May 24, 2024Observed: 0.74 ft at 3:42AM May 24, 2024Observed: 0.76 ft at 3:48AM May 24, 2024Observed: 0.8 ft at 3:54AM May 24, 2024Observed: 0.85 ft at 4:00AM May 24, 2024Observed: 0.9 ft at 4:06AM May 24, 2024Observed: 0.98 ft at 4:12AM May 24, 2024Observed: 1.09 ft at 4:18AM May 24, 2024Observed: 1.17 ft at 4:24AM May 24, 2024Observed: 1.33 ft at 4:36AM May 24, 2024Observed: 1.45 ft at 4:42AM May 24, 2024Observed: 1.56 ft at 4:48AM May 24, 2024Observed: 1.67 ft at 4:54AM May 24, 2024Observed: 1.78 ft at 5:00AM May 24, 2024Observed: 1.91 ft at 5:06AM May 24, 2024Observed: 2.05 ft at 5:12AM May 24, 2024Observed: 2.19 ft at 5:18AM May 24, 2024Observed: 2.31 ft at 5:24AM May 24, 2024Observed: 2.45 ft at 5:30AM May 24, 2024Observed: 2.6 ft at 5:36AM May 24, 2024Observed: 2.72 ft at 5:42AM May 24, 2024Observed: 2.85 ft at 5:48AM May 24, 2024Observed: 3.02 ft at 5:54AM May 24, 2024Observed: 3.17 ft at 6:00AM May 24, 2024Observed: 3.3 ft at 6:06AM May 24, 2024Observed: 3.42 ft at 6:12AM May 24, 2024Observed: 3.56 ft at 6:18AM May 24, 2024Observed: 3.68 ft at 6:24AM May 24, 2024Observed: 3.81 ft at 6:30AM May 24, 2024Observed: 3.93 ft at 6:36AM May 24, 2024Observed: 4.06 ft at 6:42AM May 24, 2024Observed: 4.17 ft at 6:48AM May 24, 2024Observed: 4.27 ft at 6:54AM May 24, 2024Observed: 4.38 ft at 7:00AM May 24, 2024Observed: 4.48 ft at 7:06AM May 24, 2024Observed: 4.58 ft at 7:12AM May 24, 2024Observed: 4.66 ft at 7:18AM May 24, 2024Observed: 4.73 ft at 7:24AM May 24, 2024Observed: 4.8 ft at 7:30AM May 24, 2024Observed: 4.88 ft at 7:36AM May 24, 2024Observed: 4.95 ft at 7:42AM May 24, 2024Observed: 5.02 ft at 7:48AM May 24, 2024Observed: 5.06 ft at 7:54AM May 24, 2024Observed: 5.08 ft at 8:00AM May 24, 2024Observed: 5.12 ft at 8:06AM May 24, 2024Observed: 5.13 ft at 8:12AM May 24, 2024Observed: 5.16 ft at 8:18AM May 24, 2024Observed: 5.19 ft at 8:24AM May 24, 2024Observed: 5.21 ft at 8:30AM May 24, 2024Observed: 5.27 ft at 8:36AM May 24, 2024Observed: 5.22 ft at 8:42AM May 24, 2024Observed: 5.23 ft at 8:48AM May 24, 2024Observed: 5.27 ft at 8:54AM May 24, 2024Observed: 5.23 ft at 9:00AM May 24, 2024Observed: 5.25 ft at 9:06AM May 24, 2024Observed: 5.21 ft at 9:12AM May 24, 2024Observed: 5.22 ft at 9:18AM May 24, 2024Observed: 5.21 ft at 9:24AM May 24, 2024Observed: 5.21 ft at 9:30AM May 24, 2024Observed: 5.17 ft at 9:36AM May 24, 2024Observed: 5.12 ft at 9:42AM May 24, 2024Observed: 5.09 ft at 9:48AM May 24, 2024Observed: 5.03 ft at 9:54AM May 24, 2024Observed: 4.96 ft at 10:00AM May 24, 2024Observed: 4.91 ft at 10:06AM May 24, 2024Observed: 4.87 ft at 10:12AM May 24, 2024Observed: 4.8 ft at 10:18AM May 24, 2024Observed: 4.73 ft at 10:24AM May 24, 2024Observed: 4.66 ft at 10:30AM May 24, 2024Observed: 4.57 ft at 10:36AM May 24, 2024Observed: 4.48 ft at 10:42AM May 24, 2024Observed: 4.36 ft at 10:48AM May 24, 2024Observed: 4.29 ft at 10:54AM May 24, 2024Observed: 4.19 ft at 11:00AM May 24, 2024Observed: 4.09 ft at 11:06AM May 24, 2024Observed: 4.01 ft at 11:12AM May 24, 2024Observed: 3.9 ft at 11:18AM May 24, 2024Observed: 3.78 ft at 11:24AM May 24, 2024Observed: 3.71 ft at 11:30AM May 24, 2024Observed: 3.61 ft at 11:36AM May 24, 2024Observed: 3.5 ft at 11:42AM May 24, 2024Observed: 3.4 ft at 11:48AM May 24, 2024Observed: 3.31 ft at 11:54AM May 24, 2024Observed: 3.03 ft at 12:06PM May 24, 2024Observed: 2.88 ft at 12:12PM May 24, 2024Observed: 2.77 ft at 12:18PM May 24, 2024Observed: 2.63 ft at 12:24PM May 24, 2024Observed: 2.47 ft at 12:30PM May 24, 2024Observed: 2.35 ft at 12:36PM May 24, 2024Observed: 2.22 ft at 12:42PM May 24, 2024Observed: 2.11 ft at 12:48PM May 24, 2024Observed: 1.99 ft at 12:54PM May 24, 2024Observed: 1.87 ft at 1:00PM May 24, 2024Observed: 1.74 ft at 1:06PM May 24, 2024Observed: 1.62 ft at 1:12PM May 24, 2024Observed: 1.5 ft at 1:18PM May 24, 2024Observed: 1.4 ft at 1:24PM May 24, 2024Observed: 1.3 ft at 1:30PM May 24, 2024Observed: 1.2 ft at 1:36PM May 24, 2024Observed: 1.11 ft at 1:42PM May 24, 2024Observed: 1 ft at 1:48PM May 24, 2024Observed: 0.91 ft at 1:54PM May 24, 2024Observed: 0.84 ft at 2:00PM May 24, 2024Observed: 0.76 ft at 2:06PM May 24, 2024Observed: 0.7 ft at 2:12PM May 24, 2024Observed: 0.65 ft at 2:18PM May 24, 2024Observed: 0.6 ft at 2:24PM May 24, 2024Observed: 0.54 ft at 2:30PM May 24, 2024Observed: 0.51 ft at 2:36PM May 24, 2024Observed: 0.48 ft at 2:42PM May 24, 2024Observed: 0.48 ft at 2:48PM May 24, 2024Observed: 0.48 ft at 2:54PM May 24, 2024Observed: 0.49 ft at 3:00PM May 24, 2024Observed: 0.51 ft at 3:06PM May 24, 2024Observed: 0.52 ft at 3:12PM May 24, 2024Observed: 0.51 ft at 3:18PM May 24, 2024Observed: 0.53 ft at 3:24PM May 24, 2024Observed: 0.55 ft at 3:30PM May 24, 2024Observed: 0.61 ft at 3:36PM May 24, 2024Observed: 0.69 ft at 3:42PM May 24, 2024Observed: 0.79 ft at 3:48PM May 24, 2024Observed: 0.84 ft at 3:54PM May 24, 2024Observed: 0.94 ft at 4:00PM May 24, 2024Observed: 0.99 ft at 4:06PM May 24, 2024Observed: 1.13 ft at 4:12PM May 24, 2024Observed: 1.19 ft at 4:18PM May 24, 2024Observed: 1.29 ft at 4:24PM May 24, 2024Observed: 1.4 ft at 4:30PM May 24, 2024Observed: 1.51 ft at 4:36PM May 24, 2024Observed: 1.63 ft at 4:42PM May 24, 2024Observed: 1.76 ft at 4:48PM May 24, 2024Observed: 1.88 ft at 4:54PM May 24, 2024Observed: 2.02 ft at 5:00PM May 24, 2024Observed: 2.14 ft at 5:06PM May 24, 2024Observed: 2.28 ft at 5:12PM May 24, 2024Observed: 2.42 ft at 5:18PM May 24, 2024Observed: 2.57 ft at 5:24PM May 24, 2024Observed: 2.73 ft at 5:30PM May 24, 2024Observed: 2.89 ft at 5:36PM May 24, 2024Observed: 3.02 ft at 5:42PM May 24, 2024Observed: 3.18 ft at 5:48PM May 24, 2024Observed: 3.33 ft at 5:54PM May 24, 2024Observed: 3.51 ft at 6:00PM May 24, 2024Observed: 3.65 ft at 6:06PM May 24, 2024Observed: 3.79 ft at 6:12PM May 24, 2024Observed: 3.9 ft at 6:18PM May 24, 2024Observed: 4.04 ft at 6:24PM May 24, 2024Observed: 4.19 ft at 6:30PM May 24, 2024Observed: 4.26 ft at 6:36PM May 24, 2024Observed: 4.53 ft at 6:48PM May 24, 2024Observed: 4.66 ft at 6:54PM May 24, 2024Observed: 4.71 ft at 7:00PM May 24, 2024Observed: 4.79 ft at 7:06PM May 24, 2024Observed: 4.89 ft at 7:12PM May 24, 2024Observed: 5.01 ft at 7:18PM May 24, 2024Observed: 5.13 ft at 7:24PM May 24, 2024Observed: 5.27 ft at 7:30PM May 24, 2024Observed: 5.34 ft at 7:36PM May 24, 2024Observed: 5.39 ft at 7:42PM May 24, 2024Observed: 5.45 ft at 7:48PM May 24, 2024Observed: 5.64 ft at 8:06PM May 24, 2024Observed: 5.7 ft at 8:12PM May 24, 2024Observed: 5.75 ft at 8:18PM May 24, 2024Observed: 5.81 ft at 8:24PM May 24, 2024Observed: 5.85 ft at 8:30PM May 24, 2024Observed: 5.91 ft at 8:42PM May 24, 2024Observed: 5.96 ft at 8:48PM May 24, 2024Observed: 5.99 ft at 8:54PM May 24, 2024Observed: 6.01 ft at 9:00PM May 24, 2024Observed: 6.09 ft at 9:12PM May 24, 2024Observed: 6.14 ft at 9:18PM May 24, 2024Observed: 6.17 ft at 9:24PM May 24, 2024Observed: 6.17 ft at 9:30PM May 24, 2024Observed: 6.16 ft at 9:36PM May 24, 2024Observed: 6.16 ft at 9:42PM May 24, 2024Observed: 6.17 ft at 9:48PM May 24, 2024Observed: 6.21 ft at 9:54PM May 24, 2024Observed: 6.22 ft at 10:00PM May 24, 2024Observed: 6.23 ft at 10:06PM May 24, 2024Observed: 6.24 ft at 10:12PM May 24, 2024Observed: 6.2 ft at 10:18PM May 24, 2024Observed: 6.16 ft at 10:24PM May 24, 2024Observed: 6.12 ft at 10:30PM May 24, 2024Observed: 6.07 ft at 10:36PM May 24, 2024Observed: 6 ft at 10:42PM May 24, 2024Observed: 5.91 ft at 10:48PM May 24, 2024Observed: 5.82 ft at 10:54PM May 24, 2024Observed: 5.73 ft at 11:00PM May 24, 2024Observed: 5.63 ft at 11:06PM May 24, 2024Observed: 5.55 ft at 11:12PM May 24, 2024Observed: 5.47 ft at 11:18PM May 24, 2024Observed: 5.37 ft at 11:24PM May 24, 2024Observed: 5.29 ft at 11:30PM May 24, 2024Observed: 5.21 ft at 11:36PM May 24, 2024Observed: 5.13 ft at 11:42PM May 24, 2024Observed: 5.05 ft at 11:48PM May 24, 2024Observed: 4.95 ft at 11:54PM May 24, 2024Observed: 4.78 ft at 12:00AM May 25, 2024Observed: 4.69 ft at 12:06AM May 25, 2024Observed: 4.52 ft at 12:12AM May 25, 2024Observed: 4.41 ft at 12:18AM May 25, 2024Observed: 4.28 ft at 12:24AM May 25, 2024Observed: 4.18 ft at 12:30AM May 25, 2024Observed: 4.04 ft at 12:36AM May 25, 2024Observed: 3.87 ft at 12:42AM May 25, 2024Observed: 3.74 ft at 12:48AM May 25, 2024Observed: 3.58 ft at 12:54AM May 25, 2024Observed: 3.41 ft at 1:00AM May 25, 2024Observed: 3.24 ft at 1:06AM May 25, 2024Observed: 3.09 ft at 1:12AM May 25, 2024Observed: 2.96 ft at 1:18AM May 25, 2024Observed: 2.8 ft at 1:24AM May 25, 2024Observed: 2.66 ft at 1:30AM May 25, 2024Observed: 2.51 ft at 1:36AM May 25, 2024Observed: 2.35 ft at 1:42AM May 25, 2024Observed: 2.21 ft at 1:48AM May 25, 2024Observed: 2.07 ft at 1:54AM May 25, 2024Observed: 1.94 ft at 2:00AM May 25, 2024Observed: 1.83 ft at 2:06AM May 25, 2024Observed: 1.73 ft at 2:12AM May 25, 2024Observed: 1.62 ft at 2:18AM May 25, 2024Observed: 1.51 ft at 2:24AM May 25, 2024Observed: 1.3 ft at 2:30AM May 25, 2024Observed: 1.24 ft at 2:36AM May 25, 2024Observed: 1.12 ft at 2:42AM May 25, 2024Observed: 1.02 ft at 2:48AM May 25, 2024Observed: 0.91 ft at 2:54AM May 25, 2024Observed: 0.82 ft at 3:00AM May 25, 2024Observed: 0.7 ft at 3:06AM May 25, 2024Observed: 0.63 ft at 3:12AM May 25, 2024Observed: 0.6 ft at 3:18AM May 25, 2024Observed: 0.54 ft at 3:24AM May 25, 2024Observed: 0.52 ft at 3:30AM May 25, 2024Observed: 0.53 ft at 3:36AM May 25, 2024Observed: 0.49 ft at 3:42AM May 25, 2024Observed: 0.49 ft at 3:48AM May 25, 2024Observed: 0.46 ft at 3:54AM May 25, 2024Observed: 0.49 ft at 4:00AM May 25, 2024Observed: 0.49 ft at 4:06AM May 25, 2024Observed: 0.5 ft at 4:12AM May 25, 2024Observed: 0.6 ft at 4:18AM May 25, 2024Observed: 0.63 ft at 4:24AM May 25, 2024Observed: 0.69 ft at 4:30AM May 25, 2024Observed: 0.7 ft at 4:36AM May 25, 2024Observed: 0.76 ft at 4:42AM May 25, 2024Observed: 0.82 ft at 4:48AM May 25, 2024Observed: 0.9 ft at 4:54AM May 25, 2024Observed: 1 ft at 5:00AM May 25, 2024Observed: 1.07 ft at 5:06AM May 25, 2024Observed: 1.17 ft at 5:12AM May 25, 2024Observed: 1.24 ft at 5:18AM May 25, 2024Observed: 1.34 ft at 5:24AM May 25, 2024Observed: 1.45 ft at 5:30AM May 25, 2024Observed: 1.59 ft at 5:36AM May 25, 2024Observed: 1.72 ft at 5:42AM May 25, 2024Observed: 1.88 ft at 5:48AM May 25, 2024Observed: 2.03 ft at 5:54AM May 25, 2024Observed: 2.18 ft at 6:00AM May 25, 2024Observed: 2.33 ft at 6:06AM May 25, 2024Observed: 2.49 ft at 6:12AM May 25, 2024Observed: 2.62 ft at 6:18AM May 25, 2024Observed: 2.77 ft at 6:24AM May 25, 2024Observed: 2.91 ft at 6:30AM May 25, 2024Observed: 3.05 ft at 6:36AM May 25, 2024Observed: 3.18 ft at 6:42AM May 25, 2024Observed: 3.28 ft at 6:48AM May 25, 2024Observed: 3.38 ft at 6:54AM May 25, 2024Observed: 3.47 ft at 7:00AM May 25, 2024Observed: 3.6 ft at 7:06AM May 25, 2024Observed: 3.73 ft at 7:12AM May 25, 2024Observed: 3.85 ft at 7:18AM May 25, 2024Observed: 3.95 ft at 7:24AM May 25, 2024Observed: 3.99 ft at 7:30AM May 25, 2024Observed: 4.08 ft at 7:36AM May 25, 2024Observed: 4.15 ft at 7:42AM May 25, 2024Observed: 4.19 ft at 7:48AM May 25, 2024Observed: 4.24 ft at 7:54AM May 25, 2024Observed: 4.3 ft at 8:00AM May 25, 2024Observed: 4.38 ft at 8:06AM May 25, 2024Observed: 4.48 ft at 8:12AM May 25, 2024Observed: 4.55 ft at 8:18AM May 25, 2024Observed: 4.61 ft at 8:24AM May 25, 2024Observed: 4.67 ft at 8:30AM May 25, 2024Observed: 4.71 ft at 8:36AM May 25, 2024Observed: 4.8 ft at 8:42AM May 25, 2024Observed: 4.83 ft at 8:48AM May 25, 2024Observed: 4.87 ft at 8:54AM May 25, 2024Observed: 4.87 ft at 9:00AM May 25, 2024Observed: 4.9 ft at 9:06AM May 25, 2024Observed: 4.93 ft at 9:12AM May 25, 2024Observed: 4.92 ft at 9:18AM May 25, 2024Observed: 4.92 ft at 9:24AM May 25, 2024Observed: 4.95 ft at 9:30AM May 25, 2024Observed: 4.94 ft at 9:36AM May 25, 2024Observed: 4.97 ft at 9:42AM May 25, 2024Observed: 4.96 ft at 9:48AM May 25, 2024Observed: 4.97 ft at 9:54AM May 25, 2024Observed: 4.95 ft at 10:00AM May 25, 2024Observed: 4.93 ft at 10:06AM May 25, 2024Observed: 4.9 ft at 10:12AM May 25, 2024Observed: 4.89 ft at 10:18AM May 25, 2024Observed: 4.88 ft at 10:24AM May 25, 2024Observed: 4.84 ft at 10:36AM May 25, 2024Observed: 4.78 ft at 10:42AM May 25, 2024Observed: 4.71 ft at 10:48AM May 25, 2024Observed: 4.66 ft at 10:54AM May 25, 2024Observed: 4.6 ft at 11:00AM May 25, 2024Observed: 4.54 ft at 11:06AM May 25, 2024Observed: 4.51 ft at 11:12AM May 25, 2024Observed: 4.47 ft at 11:18AM May 25, 2024Observed: 4.41 ft at 11:24AM May 25, 2024Observed: 4.32 ft at 11:30AM May 25, 2024Observed: 4.12 ft at 11:42AM May 25, 2024Observed: 4.05 ft at 11:48AM May 25, 2024Observed: 3.98 ft at 11:54AM May 25, 2024Observed: 3.89 ft at 12:00PM May 25, 2024Observed: 3.81 ft at 12:06PM May 25, 2024Observed: 3.74 ft at 12:12PM May 25, 2024Observed: 3.65 ft at 12:18PM May 25, 2024Observed: 3.44 ft at 12:30PM May 25, 2024Observed: 3.3 ft at 12:36PM May 25, 2024Observed: 3.18 ft at 12:42PM May 25, 2024Observed: 3.02 ft at 12:48PM May 25, 2024Observed: 2.87 ft at 12:54PM May 25, 2024Observed: 2.76 ft at 1:00PM May 25, 2024Observed: 2.62 ft at 1:06PM May 25, 2024Observed: 2.51 ft at 1:12PM May 25, 2024Observed: 2.39 ft at 1:18PM May 25, 2024Observed: 2.25 ft at 1:24PM May 25, 2024Observed: 2.13 ft at 1:30PM May 25, 2024Observed: 1.99 ft at 1:36PM May 25, 2024Observed: 1.87 ft at 1:42PM May 25, 2024Observed: 1.76 ft at 1:48PM May 25, 2024Observed: 1.64 ft at 1:54PM May 25, 2024Observed: 1.52 ft at 2:00PM May 25, 2024Observed: 1.42 ft at 2:06PM May 25, 2024Observed: 1.33 ft at 2:12PM May 25, 2024Observed: 1.23 ft at 2:18PM May 25, 2024Observed: 1.15 ft at 2:24PM May 25, 2024Observed: 1.08 ft at 2:30PM May 25, 2024Observed: 1.02 ft at 2:36PM May 25, 2024Observed: 0.96 ft at 2:42PM May 25, 2024Observed: 0.89 ft at 2:48PM May 25, 2024Observed: 0.82 ft at 2:54PM May 25, 2024Observed: 0.75 ft at 3:00PM May 25, 2024Observed: 0.68 ft at 3:06PM May 25, 2024Observed: 0.63 ft at 3:12PM May 25, 2024Observed: 0.57 ft at 3:18PM May 25, 2024Observed: 0.54 ft at 3:24PM May 25, 2024Observed: 0.52 ft at 3:30PM May 25, 2024Observed: 0.53 ft at 3:36PM May 25, 2024Observed: 0.54 ft at 3:42PM May 25, 2024Observed: 0.56 ft at 3:48PM May 25, 2024Observed: 0.6 ft at 3:54PM May 25, 2024Observed: 0.63 ft at 4:00PM May 25, 2024Observed: 0.72 ft at 4:12PM May 25, 2024Observed: 0.77 ft at 4:18PM May 25, 2024Observed: 0.79 ft at 4:24PM May 25, 2024Observed: 0.82 ft at 4:30PM May 25, 2024Observed: 0.88 ft at 4:36PM May 25, 2024Observed: 0.95 ft at 4:42PM May 25, 2024Observed: 1 ft at 4:48PM May 25, 2024Observed: 1.08 ft at 4:54PM May 25, 2024Observed: 1.17 ft at 5:00PM May 25, 2024Observed: 1.27 ft at 5:06PM May 25, 2024Observed: 1.35 ft at 5:12PM May 25, 2024Observed: 1.48 ft at 5:18PM May 25, 2024Observed: 1.62 ft at 5:24PM May 25, 2024Observed: 1.77 ft at 5:30PM May 25, 2024Observed: 1.9 ft at 5:36PM May 25, 2024Observed: 2.04 ft at 5:42PM May 25, 2024Observed: 2.18 ft at 5:48PM May 25, 2024Observed: 2.34 ft at 5:54PM May 25, 2024Observed: 2.46 ft at 6:00PM May 25, 2024Observed: 2.6 ft at 6:06PM May 25, 2024Observed: 2.73 ft at 6:12PM May 25, 2024Observed: 2.87 ft at 6:18PM May 25, 2024Observed: 3.01 ft at 6:24PM May 25, 2024Observed: 3.15 ft at 6:30PM May 25, 2024Observed: 3.3 ft at 6:36PM May 25, 2024Observed: 3.47 ft at 6:42PM May 25, 2024Observed: 3.64 ft at 6:48PM May 25, 2024Observed: 3.94 ft at 7:00PM May 25, 2024Observed: 4.07 ft at 7:06PM May 25, 2024Observed: 4.21 ft at 7:12PM May 25, 2024Observed: 4.32 ft at 7:18PM May 25, 2024Observed: 4.45 ft at 7:24PM May 25, 2024Observed: 4.58 ft at 7:30PM May 25, 2024Observed: 4.72 ft at 7:36PM May 25, 2024Observed: 4.86 ft at 7:42PM May 25, 2024Observed: 4.99 ft at 7:48PM May 25, 2024Observed: 5.3 ft at 8:06PM May 25, 2024Observed: 5.39 ft at 8:12PM May 25, 2024Observed: 5.5 ft at 8:18PM May 25, 2024Observed: 5.61 ft at 8:24PM May 25, 2024Observed: 5.7 ft at 8:30PM May 25, 2024Observed: 5.79 ft at 8:36PM May 25, 2024Observed: 5.88 ft at 8:42PM May 25, 2024Observed: 5.95 ft at 8:48PM May 25, 2024Observed: 6 ft at 8:54PM May 25, 2024Observed: 6.08 ft at 9:00PM May 25, 2024Observed: 6.14 ft at 9:06PM May 25, 2024Observed: 6.2 ft at 9:12PM May 25, 2024Observed: 6.27 ft at 9:18PM May 25, 2024Observed: 6.31 ft at 9:24PM May 25, 2024Observed: 6.35 ft at 9:30PM May 25, 2024Observed: 6.39 ft at 9:36PM May 25, 2024Observed: 6.42 ft at 9:42PM May 25, 2024Observed: 6.44 ft at 9:48PM May 25, 2024Observed: 6.48 ft at 9:54PM May 25, 2024Observed: 6.47 ft at 10:00PM May 25, 2024Observed: 6.47 ft at 10:06PM May 25, 2024Observed: 6.47 ft at 10:12PM May 25, 2024Observed: 6.5 ft at 10:18PM May 25, 2024Observed: 6.51 ft at 10:24PM May 25, 2024Observed: 6.5 ft at 10:30PM May 25, 2024Observed: 6.46 ft at 10:36PM May 25, 2024Observed: 6.37 ft at 10:42PM May 25, 2024Observed: 6.29 ft at 10:48PM May 25, 2024Observed: 6.21 ft at 10:54PM May 25, 2024Observed: 6.14 ft at 11:00PM May 25, 2024Observed: 6.1 ft at 11:06PM May 25, 2024Observed: 6.08 ft at 11:12PM May 25, 2024Observed: 6.06 ft at 11:18PM May 25, 2024Observed: 6.04 ft at 11:24PM May 25, 2024Observed: 6.01 ft at 11:30PM May 25, 2024Observed: 5.96 ft at 11:36PM May 25, 2024Observed: 5.91 ft at 11:42PM May 25, 2024Observed: 5.85 ft at 11:48PM May 25, 2024Observed: 5.77 ft at 11:54PM May 25, 2024Observed: 5.68 ft at 12:00AM May 26, 2024Observed: 5.55 ft at 12:06AM May 26, 2024Observed: 5.42 ft at 12:12AM May 26, 2024Observed: 5.31 ft at 12:18AM May 26, 2024Observed: 5.19 ft at 12:24AM May 26, 2024Observed: 5.08 ft at 12:30AM May 26, 2024Observed: 4.98 ft at 12:36AM May 26, 2024Observed: 4.85 ft at 12:42AM May 26, 2024Observed: 4.71 ft at 12:48AM May 26, 2024Observed: 4.57 ft at 12:54AM May 26, 2024Observed: 4.43 ft at 1:00AM May 26, 2024Observed: 4.31 ft at 1:06AM May 26, 2024Observed: 4.17 ft at 1:12AM May 26, 2024Observed: 4.07 ft at 1:18AM May 26, 2024Observed: 3.97 ft at 1:24AM May 26, 2024Observed: 3.82 ft at 1:30AM May 26, 2024Observed: 3.67 ft at 1:36AM May 26, 2024Observed: 3.54 ft at 1:42AM May 26, 2024Observed: 3.4 ft at 1:48AM May 26, 2024Observed: 3.27 ft at 1:54AM May 26, 2024Observed: 3.15 ft at 2:00AM May 26, 2024Observed: 3.02 ft at 2:06AM May 26, 2024Observed: 2.9 ft at 2:12AM May 26, 2024Observed: 2.76 ft at 2:18AM May 26, 2024Observed: 2.6 ft at 2:24AM May 26, 2024Observed: 2.44 ft at 2:30AM May 26, 2024Observed: 2.28 ft at 2:36AM May 26, 2024Observed: 2.16 ft at 2:42AM May 26, 2024Observed: 2.02 ft at 2:48AM May 26, 2024Observed: 1.88 ft at 2:54AM May 26, 2024Observed: 1.76 ft at 3:00AM May 26, 2024Observed: 1.65 ft at 3:06AM May 26, 2024Observed: 1.52 ft at 3:12AM May 26, 2024Observed: 1.4 ft at 3:18AM May 26, 2024Observed: 1.29 ft at 3:24AM May 26, 2024Observed: 1.19 ft at 3:30AM May 26, 2024Observed: 1.12 ft at 3:36AM May 26, 2024Observed: 1.07 ft at 3:42AM May 26, 2024Observed: 1.01 ft at 3:48AM May 26, 2024Observed: 0.98 ft at 3:54AM May 26, 2024Observed: 0.94 ft at 4:00AM May 26, 2024Observed: 0.92 ft at 4:06AM May 26, 2024Observed: 0.86 ft at 4:12AM May 26, 2024Observed: 0.79 ft at 4:18AM May 26, 2024Observed: 0.75 ft at 4:24AM May 26, 2024Observed: 0.75 ft at 4:30AM May 26, 2024Observed: 0.76 ft at 4:36AM May 26, 2024Observed: 0.77 ft at 4:42AM May 26, 2024Observed: 0.76 ft at 4:48AM May 26, 2024Observed: 0.73 ft at 4:54AM May 26, 2024Observed: 0.73 ft at 5:00AM May 26, 2024Observed: 0.71 ft at 5:06AM May 26, 2024Observed: 0.73 ft at 5:12AM May 26, 2024Observed: 0.72 ft at 5:18AM May 26, 2024Observed: 0.78 ft at 5:24AM May 26, 2024Observed: 0.83 ft at 5:30AM May 26, 2024Observed: 0.94 ft at 5:36AM May 26, 2024Observed: 1.05 ft at 5:42AM May 26, 2024Observed: 1.15 ft at 5:48AM May 26, 2024Observed: 1.24 ft at 5:54AM May 26, 2024Observed: 1.34 ft at 6:00AM May 26, 2024Observed: 1.46 ft at 6:06AM May 26, 2024Observed: 1.58 ft at 6:12AM May 26, 2024Observed: 1.68 ft at 6:18AM May 26, 2024Observed: 1.77 ft at 6:24AM May 26, 2024Observed: 1.87 ft at 6:30AM May 26, 2024Observed: 1.99 ft at 6:36AM May 26, 2024Observed: 2.12 ft at 6:42AM May 26, 2024Observed: 2.23 ft at 6:48AM May 26, 2024Observed: 2.37 ft at 6:54AM May 26, 2024Observed: 2.52 ft at 7:00AM May 26, 2024Observed: 2.67 ft at 7:06AM May 26, 2024Observed: 2.8 ft at 7:12AM May 26, 2024Observed: 2.92 ft at 7:18AM May 26, 2024Observed: 3.07 ft at 7:24AM May 26, 2024Observed: 3.23 ft at 7:30AM May 26, 2024Observed: 3.36 ft at 7:36AM May 26, 2024Observed: 3.48 ft at 7:42AM May 26, 2024Observed: 3.61 ft at 7:48AM May 26, 2024Observed: 3.76 ft at 7:54AM May 26, 2024Observed: 3.87 ft at 8:00AM May 26, 2024Observed: 3.99 ft at 8:06AM May 26, 2024Observed: 4.09 ft at 8:12AM May 26, 2024Observed: 4.1 ft at 8:18AM May 26, 2024Observed: 4.24 ft at 8:24AM May 26, 2024Observed: 4.31 ft at 8:30AM May 26, 2024Observed: 4.4 ft at 8:36AM May 26, 2024Observed: 4.45 ft at 8:42AM May 26, 2024Observed: 4.61 ft at 8:48AM May 26, 2024Observed: 4.66 ft at 8:54AM May 26, 2024Observed: 4.77 ft at 9:00AM May 26, 2024Observed: 4.83 ft at 9:06AM May 26, 2024Observed: 4.8 ft at 9:12AM May 26, 2024Observed: 4.92 ft at 9:18AM May 26, 2024Observed: 4.97 ft at 9:24AM May 26, 2024Observed: 5.05 ft at 9:30AM May 26, 2024Observed: 5.1 ft at 9:36AM May 26, 2024Observed: 5.16 ft at 9:42AM May 26, 2024Observed: 5.18 ft at 9:48AM May 26, 2024Observed: 5.2 ft at 9:54AM May 26, 2024Observed: 5.25 ft at 10:00AM May 26, 2024Observed: 5.29 ft at 10:06AM May 26, 2024Observed: 5.33 ft at 10:12AM May 26, 2024Observed: 5.31 ft at 10:18AM May 26, 2024Observed: 5.36 ft at 10:24AM May 26, 2024Observed: 5.34 ft at 10:30AM May 26, 2024Observed: 5.33 ft at 10:36AM May 26, 2024Observed: 5.31 ft at 10:42AM May 26, 2024Observed: 5.31 ft at 10:48AM May 26, 2024Observed: 5.29 ft at 10:54AM May 26, 2024Observed: 5.26 ft at 11:00AM May 26, 2024Observed: 5.24 ft at 11:06AM May 26, 2024Observed: 5.19 ft at 11:12AM May 26, 2024Observed: 5.2 ft at 11:18AM May 26, 2024Observed: 5.17 ft at 11:24AM May 26, 2024Observed: 5.16 ft at 11:30AM May 26, 2024Observed: 5.14 ft at 11:36AM May 26, 2024Observed: 5.1 ft at 11:42AM May 26, 2024Observed: 5.04 ft at 11:48AM May 26, 2024Observed: 4.97 ft at 11:54AM May 26, 2024Observed: 4.9 ft at 12:00PM May 26, 2024Observed: 4.82 ft at 12:06PM May 26, 2024Observed: 4.72 ft at 12:12PM May 26, 2024Observed: 4.6 ft at 12:18PM May 26, 2024Observed: 4.22 ft at 12:42PM May 26, 2024Observed: 4.11 ft at 12:48PM May 26, 2024Observed: 4.01 ft at 12:54PM May 26, 2024Observed: 3.87 ft at 1:00PM May 26, 2024Observed: 3.75 ft at 1:06PM May 26, 2024Observed: 3.64 ft at 1:12PM May 26, 2024Observed: 3.52 ft at 1:18PM May 26, 2024Observed: 3.42 ft at 1:24PM May 26, 2024Observed: 3.32 ft at 1:30PM May 26, 2024Observed: 3.23 ft at 1:36PM May 26, 2024Observed: 3.12 ft at 1:42PM May 26, 2024Observed: 3 ft at 1:48PM May 26, 2024Observed: 2.91 ft at 1:54PM May 26, 2024Observed: 2.76 ft at 2:00PM May 26, 2024Observed: 2.64 ft at 2:06PM May 26, 2024Observed: 2.49 ft at 2:12PM May 26, 2024Observed: 2.34 ft at 2:18PM May 26, 2024Observed: 2.21 ft at 2:24PM May 26, 2024Observed: 2.06 ft at 2:30PM May 26, 2024Observed: 1.93 ft at 2:36PM May 26, 2024Observed: 1.78 ft at 2:42PM May 26, 2024Observed: 1.65 ft at 2:48PM May 26, 2024Observed: 1.51 ft at 2:54PM May 26, 2024Observed: 1.44 ft at 3:00PM May 26, 2024Observed: 1.35 ft at 3:06PM May 26, 2024Observed: 1.25 ft at 3:12PM May 26, 2024Observed: 1.2 ft at 3:18PM May 26, 2024Observed: 1.12 ft at 3:24PM May 26, 2024Observed: 1.04 ft at 3:30PM May 26, 2024Observed: 0.98 ft at 3:36PM May 26, 2024Observed: 0.93 ft at 3:42PM May 26, 2024Observed: 0.88 ft at 3:48PM May 26, 2024Observed: 0.81 ft at 3:54PM May 26, 2024Observed: 0.76 ft at 4:00PM May 26, 2024Observed: 0.73 ft at 4:06PM May 26, 2024Observed: 0.71 ft at 4:12PM May 26, 2024Observed: 0.7 ft at 4:18PM May 26, 2024Observed: 0.7 ft at 4:24PM May 26, 2024Observed: 0.73 ft at 4:30PM May 26, 2024Observed: 0.75 ft at 4:36PM May 26, 2024Observed: 0.78 ft at 4:42PM May 26, 2024Observed: 0.81 ft at 4:48PM May 26, 2024Observed: 0.83 ft at 4:54PM May 26, 2024Observed: 0.88 ft at 5:00PM May 26, 2024Observed: 0.92 ft at 5:06PM May 26, 2024Observed: 0.98 ft at 5:12PM May 26, 2024Forecast: 1.5 ft 6:00PM May 26, 2024Forecast: 2.8 ft 7:00PM May 26, 2024Forecast: 4.3 ft 8:00PM May 26, 2024Forecast: 5.5 ft 9:00PM May 26, 2024Forecast: 6.2 ft 10:00PM May 26, 2024Highest Forecast: 6.4 ft 11:00PM May 26, 2024Forecast: 6.2 ft 12:00AM May 27, 2024Forecast: 5.5 ft 1:00AM May 27, 2024Forecast: 4.4 ft 2:00AM May 27, 2024Forecast: 3 ft 3:00AM May 27, 2024Forecast: 1.8 ft 4:00AM May 27, 2024Forecast: 1 ft 5:00AM May 27, 2024Forecast: 0.9 ft 6:00AM May 27, 2024Forecast: 1.5 ft 7:00AM May 27, 2024Forecast: 2.6 ft 8:00AM May 27, 2024Forecast: 3.7 ft 9:00AM May 27, 2024Forecast: 4.5 ft 10:00AM May 27, 2024Forecast: 4.9 ft 11:00AM May 27, 2024Forecast: 4.8 ft 12:00PM May 27, 2024Forecast: 4.4 ft 1:00PM May 27, 2024Forecast: 3.5 ft 2:00PM May 27, 2024Forecast: 2.3 ft 3:00PM May 27, 2024Forecast: 1.3 ft 4:00PM May 27, 2024Forecast: 0.7 ft 5:00PM May 27, 2024Forecast: 0.8 ft 6:00PM May 27, 2024Forecast: 1.5 ft 7:00PM May 27, 2024Forecast: 2.8 ft 8:00PM May 27, 2024Forecast: 4.3 ft 9:00PM May 27, 2024Forecast: 5.4 ft 10:00PM May 27, 2024Forecast: 6 ft 11:00PM May 27, 2024Forecast: 6 ft 12:00AM May 28, 2024Forecast: 5.7 ft 1:00AM May 28, 2024Forecast: 5 ft 2:00AM May 28, 2024Forecast: 3.8 ft 3:00AM May 28, 2024Forecast: 2.3 ft 4:00AM May 28, 2024Forecast: 1.1 ft 5:00AM May 28, 2024Forecast: 0.4 ft 6:00AM May 28, 2024Forecast: 0.5 ft 7:00AM May 28, 2024Forecast: 1.2 ft 8:00AM May 28, 2024Forecast: 2.3 ft 9:00AM May 28, 2024Forecast: 3.3 ft 10:00AM May 28, 2024Forecast: 4.2 ft 11:00AM May 28, 2024Forecast: 4.7 ft 12:00PM May 28, 2024Forecast: 4.8 ft 1:00PM May 28, 2024Forecast: 4.2 ft 2:00PM May 28, 2024Forecast: 3.3 ft 3:00PM May 28, 2024Forecast: 2.2 ft 4:00PM May 28, 2024Forecast: 1.2 ft 5:00PM May 28, 2024Forecast: 0.6 ft 6:00PM May 28, 2024Forecast: 0.7 ft 7:00PM May 28, 2024Forecast: 1.4 ft 8:00PM May 28, 2024Forecast: 2.8 ft 9:00PM May 28, 2024Forecast: 4.2 ft 10:00PM May 28, 2024Forecast: 5.3 ft 11:00PM May 28, 2024Forecast: 5.9 ft 12:00AM May 29, 2024Forecast: 5.9 ft 1:00AM May 29, 2024Forecast: 5.6 ft 2:00AM May 29, 2024Forecast: 4.8 ft 3:00AM May 29, 2024Forecast: 3.6 ft 4:00AM May 29, 2024Forecast: 2.2 ft 5:00AM May 29, 2024Forecast: 1.1 ft 6:00AM May 29, 2024Forecast: 0.5 ft 7:00AM May 29, 2024Forecast: 0.6 ft 8:00AM May 29, 2024Forecast: 1.4 ft 9:00AM May 29, 2024Forecast: 2.6 ft 10:00AM May 29, 2024Forecast: 3.8 ft 11:00AM May 29, 2024Forecast: 4.7 ft 12:00PM May 29, 2024Forecast: 5.1 ft 1:00PM May 29, 2024Forecast: 5 ft 2:00PM May 29, 2024Forecast: 4.5 ft 3:00PM May 29, 2024Forecast: 3.5 ft 4:00PM May 29, 2024Forecast: 2.4 ft 5:00PM May 29, 2024NOAA National Ocean ServiceCHTS1(plotting HMIRP) Graph Created (5:32PM May 26, 2024)ObservedForecast (issued 8:46AM May 26)Latest observed value: 0.98 ft at 5:12 PM EDT 26-May-2024. Flood Stage is 7 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: Not Available
Metadata
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 Cooper River at Charleston Harbor (IN MLLW) are issued routinely year-round.

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

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Upstream Gauge - at HW-17 (IN MLLW) Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 8
Moderate Flood Stage: 7.5
Flood Stage: 7
Action Stage: 6.5
Low Stage (in feet): -1.5

Historic Crests
(1) 12.52 ft on 09/22/1989
(2) 10.23 ft on 08/11/1940
(3) 9.92 ft on 09/11/2017
(4) 9.86 ft on 12/17/2023
(5) 9.29 ft on 10/08/2016
(6) 9.23 ft on 08/30/2023
(7) 8.81 ft on 01/01/1987
(8) 8.76 ft on 11/24/2018
(9) 8.69 ft on 10/27/2015
(10) 8.64 ft on 05/28/1934
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 9.86 ft on 12/17/2023
(2) 8.06 ft on 09/28/2023
(3) 9.23 ft on 08/30/2023
(4) 8.11 ft on 08/02/2023
(5) 8.37 ft on 06/04/2023
(6) 8.09 ft on 05/18/2023
(7) 8.31 ft on 12/22/2022
(8) 8.35 ft on 11/10/2022
(9) 8.14 ft on 09/09/2022
(10) 8.26 ft on 11/08/2021
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) -4.08 ft on 03/13/1993
(2) -3.66 ft on 11/30/1963
(3) -3.29 ft on 12/21/1976
(4) -3.16 ft on 02/15/1953
(5) -3.16 ft on 02/19/1928
Show More Low Water Records

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
12.52 Record tide level reached in association with Hurricane Hugo which made landfall at Sullivans Island, SC as a Category 4 hurricane at midnight September 22nd, 1989.
10.23 Peak tide level reached in association with an unnamed hurricane that made landfall near Hilton Head Island, SC as a Category 2 hurricane on August 11th, 1940.
9.92 Peak tide level reached in association with Tropical Storm Irma on September 11th, 2017.
9.29 Peak tide level reached in association with Hurricane Matthew which made landfall near McClellanville, SC as a Category 1 hurricane on October 8th, 2016.
9.23 Peak tide level reached in association with Tropical Storm Idalia on August 30th, 2023.
8.64 Peak tide level reached in association with Hurricane David which made landfall near Sapelo Island, GA as a Category 1 hurricane on September 4th, 1979.
8.15 Peak tide level reached in association with an unnamed hurricane that made landfall near Ossabaw Island, GA as a Category 2 hurricane on October 15th, 1947.
8.14 Peak tide level reached in association with Hurricane Gracie which made landfall near Edisto Island, SC as a Category 4 hurricane on September 29th, 1959.
8 At 8.0 ft MLLW, major coastal flooding occurs. Widespread flooding occurs in Downtown Charleston with numerous roads flooded and impassable and some impact to structures. Impacts become more extensive all along the southeast South Carolina coast including erosion at area beaches, with limited or no access to docks, piers, and some islands.
7.5 At 7.5 ft MLLW, moderate coastal flooding occurs. In Downtown Charleston, additional impacted roads include HW-17 at HW-61, Market Street, East Bay, Rutledge, and areas around MUSC. Other impacted areas include Long Point Road near Palmetto Islands County Park, locations around the Naval Complex, 12th and 15th Streets on Isle of Palms, and the road leading to Bohicket Marina on Seabrook Island. In Beaufort County, flooding will impact Hunting Island and the Sea Island Parkway near Chowan Creek Bridge.
7 At 7.0 ft MLLW, minor coastal flooding typically begins. Minor flooding on roadways around Downtown Charleston occurs, possibly including Lockwood Drive, Wentworth and Barre, Fishburne and Hagood, and Morrison Drive. As the tide height approaches 7.5 ft MLLW, roads can become impassable and closed. Other impacts outside of Downtown Charleston include minor flooding of low-lying locations near area beaches including Isle of Palms, Sullivan's Island, Folly Beach, Kiawah Island, and Edisto Island.
Low Water Impacts Collapse
If you notice any errors in the below information, please contact our Webmaster
-1.5 At -1.5 ft MLLW, very low water levels will occur along the southeast South Carolina coast. This could cause navigation issues along the coast including tidal creeks, inlets, and in marsh areas. Also, areas that are normally under water could be exposed.
About This Location Collapse

Latitude: 32.775037° N, Longitude: 79.923990° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 7 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 -3.14 3.86 Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 -2.16 4.84 Older USGS topographic maps, NGVD29 benchmarks
MSL -2.92 4.08 Older USGS topographic maps, MSL benchmarks
Other -5.76 1.24 Mean Higher High Water (MHHW), which is used as a proxy for inundation.
Additional Information Collapse
Gage data plotted here is referenced to Mean Lower Low Water (MLLW). Click here to view other datums as well as the astronomical tide predictions for Charleston Harbor. These predictions do not incorporate effects such as wind which can increase values by as much as 2 ft during non-tropical events.
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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Charleston Weather Forecast Office
5777 South Aviation Avenue
North Charleston, SC 29406
(843) 747-5860
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Page last modified: 30-Oct-2020 4:10 PM
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