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Over 200 USGS real-time streamgages used to support NWS river forecasts and warnings are at risk of being discontinued. Click here for more information from the USGS...


NOTE: Gauge readings may be delayed or temporarily unavailable due to satellite communication issues.
Weather Forecast Office (Baltimore/Washington) Sterling, VA Middle Atlantic River Forecast Center
Hydrograph River at a Glance Download
Potomac River at Georgetown / Wisconsin Ave Tide Height (ft)Observed: 1.72 ft at 7:18PM May 17, 2013Observed: 1.68 ft at 7:24PM May 17, 2013Observed: 1.65 ft at 7:30PM May 17, 2013Observed: 1.63 ft at 7:36PM May 17, 2013Observed: 1.61 ft at 7:42PM May 17, 2013Observed: 1.58 ft at 7:48PM May 17, 2013Observed: 1.55 ft at 7:54PM May 17, 2013Observed: 1.53 ft at 8:00PM May 17, 2013Observed: 1.49 ft at 8:06PM May 17, 2013Observed: 1.46 ft at 8:12PM May 17, 2013Observed: 1.46 ft at 8:18PM May 17, 2013Observed: 1.42 ft at 8:24PM May 17, 2013Observed: 1.4 ft at 8:30PM May 17, 2013Observed: 1.39 ft at 8:36PM May 17, 2013Observed: 1.36 ft at 8:42PM May 17, 2013Observed: 1.34 ft at 8:48PM May 17, 2013Observed: 1.33 ft at 8:54PM May 17, 2013Observed: 1.35 ft at 9:00PM May 17, 2013Observed: 1.31 ft at 9:06PM May 17, 2013Observed: 1.31 ft at 9:12PM May 17, 2013Observed: 1.3 ft at 9:18PM May 17, 2013Observed: 1.31 ft at 9:24PM May 17, 2013Observed: 1.31 ft at 9:30PM May 17, 2013Observed: 1.32 ft at 9:36PM May 17, 2013Observed: 1.33 ft at 9:42PM May 17, 2013Observed: 1.36 ft at 9:48PM May 17, 2013Observed: 1.41 ft at 9:54PM May 17, 2013Observed: 1.4 ft at 10:00PM May 17, 2013Observed: 1.44 ft at 10:06PM May 17, 2013Observed: 1.48 ft at 10:12PM May 17, 2013Observed: 1.55 ft at 10:18PM May 17, 2013Observed: 1.61 ft at 10:24PM May 17, 2013Observed: 1.67 ft at 10:30PM May 17, 2013Observed: 1.74 ft at 10:36PM May 17, 2013Observed: 1.82 ft at 10:42PM May 17, 2013Observed: 1.91 ft at 10:48PM May 17, 2013Observed: 2.02 ft at 10:54PM May 17, 2013Observed: 2.09 ft at 11:00PM May 17, 2013Observed: 2.18 ft at 11:06PM May 17, 2013Observed: 2.29 ft at 11:12PM May 17, 2013Observed: 2.36 ft at 11:18PM May 17, 2013Observed: 2.45 ft at 11:24PM May 17, 2013Observed: 2.57 ft at 11:30PM May 17, 2013Observed: 2.65 ft at 11:36PM May 17, 2013Observed: 2.75 ft at 11:42PM May 17, 2013Observed: 2.81 ft at 11:48PM May 17, 2013Observed: 2.92 ft at 11:54PM May 17, 2013Observed: 3 ft at 12:00AM May 18, 2013Observed: 3.06 ft at 12:06AM May 18, 2013Observed: 3.15 ft at 12:12AM May 18, 2013Observed: 3.22 ft at 12:18AM May 18, 2013Observed: 3.28 ft at 12:24AM May 18, 2013Observed: 3.35 ft at 12:30AM May 18, 2013Observed: 3.42 ft at 12:36AM May 18, 2013Observed: 3.48 ft at 12:42AM May 18, 2013Observed: 3.52 ft at 12:48AM May 18, 2013Observed: 3.58 ft at 12:54AM May 18, 2013Observed: 3.62 ft at 1:00AM May 18, 2013Observed: 3.66 ft at 1:06AM May 18, 2013Observed: 3.71 ft at 1:12AM May 18, 2013Observed: 3.75 ft at 1:18AM May 18, 2013Observed: 3.78 ft at 1:24AM May 18, 2013Observed: 3.85 ft at 1:30AM May 18, 2013Observed: 3.86 ft at 1:36AM May 18, 2013Observed: 3.9 ft at 1:42AM May 18, 2013Observed: 3.92 ft at 1:48AM May 18, 2013Observed: 3.93 ft at 1:54AM May 18, 2013Observed: 3.98 ft at 2:00AM May 18, 2013Observed: 3.98 ft at 2:06AM May 18, 2013Observed: 3.98 ft at 2:12AM May 18, 2013Observed: 4.01 ft at 2:18AM May 18, 2013Observed: 4.04 ft at 2:24AM May 18, 2013Observed: 4.04 ft at 2:30AM May 18, 2013Observed: 4.05 ft at 2:36AM May 18, 2013Observed: 4.03 ft at 2:42AM May 18, 2013Observed: 4.03 ft at 2:48AM May 18, 2013Observed: 4.02 ft at 2:54AM May 18, 2013Observed: 4.04 ft at 3:00AM May 18, 2013Observed: 4.02 ft at 3:06AM May 18, 2013Observed: 4.01 ft at 3:12AM May 18, 2013Observed: 3.99 ft at 3:18AM May 18, 2013Observed: 3.97 ft at 3:24AM May 18, 2013Observed: 3.96 ft at 3:30AM May 18, 2013Observed: 3.92 ft at 3:36AM May 18, 2013Observed: 3.89 ft at 3:42AM May 18, 2013Observed: 3.88 ft at 3:48AM May 18, 2013Observed: 3.83 ft at 3:54AM May 18, 2013Observed: 3.82 ft at 4:00AM May 18, 2013Observed: 3.77 ft at 4:06AM May 18, 2013Observed: 3.73 ft at 4:12AM May 18, 2013Observed: 3.69 ft at 4:18AM May 18, 2013Observed: 3.65 ft at 4:24AM May 18, 2013Observed: 3.63 ft at 4:30AM May 18, 2013Observed: 3.57 ft at 4:36AM May 18, 2013Observed: 3.53 ft at 4:42AM May 18, 2013Observed: 3.49 ft at 4:48AM May 18, 2013Observed: 3.47 ft at 4:54AM May 18, 2013Observed: 3.43 ft at 5:00AM May 18, 2013Observed: 3.37 ft at 5:06AM May 18, 2013Observed: 3.32 ft at 5:12AM May 18, 2013Observed: 3.28 ft at 5:18AM May 18, 2013Observed: 3.22 ft at 5:24AM May 18, 2013Observed: 3.17 ft at 5:30AM May 18, 2013Observed: 3.13 ft at 5:36AM May 18, 2013Observed: 3.07 ft at 5:42AM May 18, 2013Observed: 3.03 ft at 5:48AM May 18, 2013Observed: 2.97 ft at 5:54AM May 18, 2013Observed: 2.91 ft at 6:00AM May 18, 2013Observed: 2.87 ft at 6:06AM May 18, 2013Observed: 2.82 ft at 6:12AM May 18, 2013Observed: 2.78 ft at 6:18AM May 18, 2013Observed: 2.74 ft at 6:24AM May 18, 2013Observed: 2.67 ft at 6:30AM May 18, 2013Observed: 2.62 ft at 6:36AM May 18, 2013Observed: 2.57 ft at 6:42AM May 18, 2013Observed: 2.54 ft at 6:48AM May 18, 2013Observed: 2.49 ft at 6:54AM May 18, 2013Observed: 2.44 ft at 7:00AM May 18, 2013Observed: 2.41 ft at 7:06AM May 18, 2013Observed: 2.36 ft at 7:12AM May 18, 2013Observed: 2.31 ft at 7:18AM May 18, 2013Observed: 2.27 ft at 7:24AM May 18, 2013Observed: 2.23 ft at 7:30AM May 18, 2013Observed: 2.22 ft at 7:36AM May 18, 2013Observed: 2.18 ft at 7:42AM May 18, 2013Observed: 2.13 ft at 7:48AM May 18, 2013Observed: 2.09 ft at 7:54AM May 18, 2013Observed: 2.08 ft at 8:00AM May 18, 2013Observed: 2.03 ft at 8:06AM May 18, 2013Observed: 2.03 ft at 8:12AM May 18, 2013Observed: 1.98 ft at 8:18AM May 18, 2013Observed: 1.97 ft at 8:24AM May 18, 2013Observed: 1.94 ft at 8:30AM May 18, 2013Observed: 1.93 ft at 8:36AM May 18, 2013Observed: 1.92 ft at 8:42AM May 18, 2013Observed: 1.88 ft at 8:48AM May 18, 2013Observed: 1.89 ft at 8:54AM May 18, 2013Observed: 1.85 ft at 9:00AM May 18, 2013Observed: 1.87 ft at 9:06AM May 18, 2013Observed: 1.84 ft at 9:12AM May 18, 2013Observed: 1.83 ft at 9:18AM May 18, 2013Observed: 1.84 ft at 9:24AM May 18, 2013Observed: 1.83 ft at 9:30AM May 18, 2013Observed: 1.83 ft at 9:36AM May 18, 2013Observed: 1.86 ft at 9:42AM May 18, 2013Observed: 1.85 ft at 9:48AM May 18, 2013Observed: 1.86 ft at 9:54AM May 18, 2013Observed: 1.9 ft at 10:00AM May 18, 2013Observed: 1.92 ft at 10:06AM May 18, 2013Observed: 1.98 ft at 10:12AM May 18, 2013Observed: 2.01 ft at 10:18AM May 18, 2013Observed: 2.08 ft at 10:24AM May 18, 2013Observed: 2.12 ft at 10:30AM May 18, 2013Observed: 2.2 ft at 10:36AM May 18, 2013Observed: 2.29 ft at 10:42AM May 18, 2013Observed: 2.36 ft at 10:48AM May 18, 2013Observed: 2.46 ft at 10:54AM May 18, 2013Observed: 2.55 ft at 11:00AM May 18, 2013Observed: 2.67 ft at 11:06AM May 18, 2013Observed: 2.74 ft at 11:12AM May 18, 2013Observed: 2.83 ft at 11:18AM May 18, 2013Observed: 2.95 ft at 11:24AM May 18, 2013Observed: 3.02 ft at 11:30AM May 18, 2013Observed: 3.12 ft at 11:36AM May 18, 2013Observed: 3.21 ft at 11:42AM May 18, 2013Observed: 3.3 ft at 11:48AM May 18, 2013Observed: 3.4 ft at 11:54AM May 18, 2013Observed: 3.47 ft at 12:00PM May 18, 2013Observed: 3.55 ft at 12:06PM May 18, 2013Observed: 3.62 ft at 12:12PM May 18, 2013Observed: 3.68 ft at 12:18PM May 18, 2013Observed: 3.75 ft at 12:24PM May 18, 2013Observed: 3.8 ft at 12:30PM May 18, 2013Observed: 3.87 ft at 12:36PM May 18, 2013Observed: 3.94 ft at 12:42PM May 18, 2013Observed: 3.98 ft at 12:48PM May 18, 2013Observed: 4.03 ft at 12:54PM May 18, 2013Observed: 4.09 ft at 1:00PM May 18, 2013Observed: 4.15 ft at 1:06PM May 18, 2013Observed: 4.17 ft at 1:12PM May 18, 2013Observed: 4.21 ft at 1:18PM May 18, 2013Observed: 4.27 ft at 1:24PM May 18, 2013Observed: 4.32 ft at 1:30PM May 18, 2013Observed: 4.34 ft at 1:36PM May 18, 2013Observed: 4.36 ft at 1:42PM May 18, 2013Observed: 4.42 ft at 1:48PM May 18, 2013Observed: 4.43 ft at 1:54PM May 18, 2013Observed: 4.43 ft at 2:00PM May 18, 2013Observed: 4.45 ft at 2:06PM May 18, 2013Observed: 4.47 ft at 2:12PM May 18, 2013Observed: 4.47 ft at 2:18PM May 18, 2013Observed: 4.48 ft at 2:24PM May 18, 2013Observed: 4.47 ft at 2:30PM May 18, 2013Observed: 4.5 ft at 2:36PM May 18, 2013Observed: 4.47 ft at 2:42PM May 18, 2013Observed: 4.48 ft at 2:48PM May 18, 2013Observed: 4.46 ft at 2:54PM May 18, 2013Observed: 4.44 ft at 3:00PM May 18, 2013Observed: 4.45 ft at 3:06PM May 18, 2013Observed: 4.4 ft at 3:12PM May 18, 2013Observed: 4.37 ft at 3:18PM May 18, 2013Observed: 4.34 ft at 3:24PM May 18, 2013Observed: 4.3 ft at 3:30PM May 18, 2013Observed: 4.27 ft at 3:36PM May 18, 2013Observed: 4.22 ft at 3:42PM May 18, 2013Observed: 4.19 ft at 3:48PM May 18, 2013Observed: 4.13 ft at 3:54PM May 18, 2013Observed: 4.08 ft at 4:00PM May 18, 2013Observed: 4.06 ft at 4:06PM May 18, 2013Observed: 3.99 ft at 4:12PM May 18, 2013Observed: 3.93 ft at 4:18PM May 18, 2013Observed: 3.91 ft at 4:24PM May 18, 2013Observed: 3.86 ft at 4:30PM May 18, 2013Observed: 3.78 ft at 4:36PM May 18, 2013Observed: 3.74 ft at 4:42PM May 18, 2013Observed: 3.7 ft at 4:48PM May 18, 2013Observed: 3.63 ft at 4:54PM May 18, 2013Observed: 3.61 ft at 5:00PM May 18, 2013Observed: 3.54 ft at 5:06PM May 18, 2013Observed: 3.51 ft at 5:12PM May 18, 2013Observed: 3.42 ft at 5:18PM May 18, 2013Observed: 3.39 ft at 5:24PM May 18, 2013Observed: 3.33 ft at 5:30PM May 18, 2013Observed: 3.27 ft at 5:36PM May 18, 2013Observed: 3.23 ft at 5:42PM May 18, 2013Observed: 3.19 ft at 5:48PM May 18, 2013Observed: 3.13 ft at 5:54PM May 18, 2013Observed: 3.07 ft at 6:00PM May 18, 2013Observed: 3.03 ft at 6:06PM May 18, 2013Observed: 2.98 ft at 6:12PM May 18, 2013Observed: 2.96 ft at 6:18PM May 18, 2013Observed: 2.92 ft at 6:24PM May 18, 2013Observed: 2.86 ft at 6:30PM May 18, 2013Observed: 2.81 ft at 6:36PM May 18, 2013Observed: 2.78 ft at 6:42PM May 18, 2013Observed: 2.73 ft at 6:48PM May 18, 2013Observed: 2.7 ft at 6:54PM May 18, 2013Observed: 2.65 ft at 7:00PM May 18, 2013Observed: 2.61 ft at 7:06PM May 18, 2013Observed: 2.56 ft at 7:12PM May 18, 2013Observed: 2.54 ft at 7:18PM May 18, 2013Observed: 2.51 ft at 7:24PM May 18, 2013Observed: 2.47 ft at 7:30PM May 18, 2013Observed: 2.47 ft at 7:36PM May 18, 2013Observed: 2.42 ft at 7:42PM May 18, 2013Observed: 2.41 ft at 7:48PM May 18, 2013Observed: 2.36 ft at 7:54PM May 18, 2013Observed: 2.33 ft at 8:00PM May 18, 2013Observed: 2.32 ft at 8:06PM May 18, 2013Observed: 2.27 ft at 8:12PM May 18, 2013Observed: 2.25 ft at 8:18PM May 18, 2013Observed: 2.25 ft at 8:24PM May 18, 2013Observed: 2.24 ft at 8:30PM May 18, 2013Observed: 2.21 ft at 8:36PM May 18, 2013Observed: 2.19 ft at 8:42PM May 18, 2013Observed: 2.18 ft at 8:48PM May 18, 2013Observed: 2.18 ft at 8:54PM May 18, 2013Observed: 2.18 ft at 9:00PM May 18, 2013Observed: 2.15 ft at 9:06PM May 18, 2013Observed: 2.15 ft at 9:12PM May 18, 2013Observed: 2.13 ft at 9:18PM May 18, 2013Observed: 2.14 ft at 9:24PM May 18, 2013Observed: 2.13 ft at 9:30PM May 18, 2013Observed: 2.14 ft at 9:36PM May 18, 2013Observed: 2.11 ft at 9:42PM May 18, 2013Observed: 2.14 ft at 9:48PM May 18, 2013Observed: 2.13 ft at 9:54PM May 18, 2013Observed: 2.15 ft at 10:00PM May 18, 2013Observed: 2.16 ft at 10:06PM May 18, 2013Observed: 2.18 ft at 10:12PM May 18, 2013Observed: 2.21 ft at 10:18PM May 18, 2013Observed: 2.24 ft at 10:24PM May 18, 2013Observed: 2.3 ft at 10:30PM May 18, 2013Observed: 2.32 ft at 10:36PM May 18, 2013Observed: 2.38 ft at 10:42PM May 18, 2013Observed: 2.43 ft at 10:48PM May 18, 2013Observed: 2.52 ft at 10:54PM May 18, 2013Observed: 2.57 ft at 11:00PM May 18, 2013Observed: 2.64 ft at 11:06PM May 18, 2013Observed: 2.72 ft at 11:12PM May 18, 2013Observed: 2.8 ft at 11:18PM May 18, 2013Observed: 2.91 ft at 11:24PM May 18, 2013Observed: 2.99 ft at 11:30PM May 18, 2013Observed: 3.05 ft at 11:36PM May 18, 2013Observed: 3.14 ft at 11:42PM May 18, 2013Observed: 3.23 ft at 11:48PM May 18, 2013Observed: 3.31 ft at 11:54PM May 18, 2013Observed: 3.42 ft at 12:00AM May 19, 2013Observed: 3.49 ft at 12:06AM May 19, 2013Observed: 3.56 ft at 12:12AM May 19, 2013Observed: 3.66 ft at 12:18AM May 19, 2013Observed: 3.73 ft at 12:24AM May 19, 2013Observed: 3.79 ft at 12:30AM May 19, 2013Observed: 3.85 ft at 12:36AM May 19, 2013Observed: 3.94 ft at 12:42AM May 19, 2013Observed: 3.98 ft at 12:48AM May 19, 2013Observed: 4.07 ft at 12:54AM May 19, 2013Observed: 4.1 ft at 1:00AM May 19, 2013Observed: 4.17 ft at 1:06AM May 19, 2013Observed: 4.2 ft at 1:12AM May 19, 2013Observed: 4.24 ft at 1:18AM May 19, 2013Observed: 4.29 ft at 1:24AM May 19, 2013Observed: 4.36 ft at 1:30AM May 19, 2013Observed: 4.37 ft at 1:36AM May 19, 2013Observed: 4.42 ft at 1:42AM May 19, 2013Observed: 4.46 ft at 1:48AM May 19, 2013Observed: 4.49 ft at 1:54AM May 19, 2013Observed: 4.54 ft at 2:00AM May 19, 2013Observed: 4.55 ft at 2:06AM May 19, 2013Observed: 4.59 ft at 2:12AM May 19, 2013Observed: 4.6 ft at 2:18AM May 19, 2013Observed: 4.61 ft at 2:24AM May 19, 2013Observed: 4.62 ft at 2:30AM May 19, 2013Observed: 4.63 ft at 2:36AM May 19, 2013Observed: 4.63 ft at 2:42AM May 19, 2013Highest Observation: 4.64 ft at 2:48AM May 19, 2013Observed: 4.62 ft at 2:54AM May 19, 2013Observed: 4.6 ft at 3:00AM May 19, 2013Observed: 4.6 ft at 3:06AM May 19, 2013Observed: 4.58 ft at 3:12AM May 19, 2013Observed: 4.57 ft at 3:18AM May 19, 2013Observed: 4.56 ft at 3:24AM May 19, 2013Observed: 4.54 ft at 3:30AM May 19, 2013Observed: 4.53 ft at 3:36AM May 19, 2013Observed: 4.52 ft at 3:42AM May 19, 2013Observed: 4.48 ft at 3:48AM May 19, 2013Observed: 4.44 ft at 3:54AM May 19, 2013Observed: 4.43 ft at 4:00AM May 19, 2013Observed: 4.4 ft at 4:06AM May 19, 2013Observed: 4.34 ft at 4:12AM May 19, 2013Observed: 4.3 ft at 4:18AM May 19, 2013Observed: 4.27 ft at 4:24AM May 19, 2013Observed: 4.21 ft at 4:30AM May 19, 2013Observed: 4.19 ft at 4:36AM May 19, 2013Observed: 4.13 ft at 4:42AM May 19, 2013Observed: 4.1 ft at 4:48AM May 19, 2013Observed: 4.03 ft at 4:54AM May 19, 2013Observed: 4 ft at 5:00AM May 19, 2013Observed: 3.94 ft at 5:06AM May 19, 2013Observed: 3.87 ft at 5:12AM May 19, 2013Observed: 3.82 ft at 5:18AM May 19, 2013Observed: 3.77 ft at 5:24AM May 19, 2013Observed: 3.73 ft at 5:30AM May 19, 2013Observed: 3.66 ft at 5:36AM May 19, 2013Observed: 3.6 ft at 5:42AM May 19, 2013Observed: 3.55 ft at 5:48AM May 19, 2013Observed: 3.5 ft at 5:54AM May 19, 2013Observed: 3.44 ft at 6:00AM May 19, 2013Observed: 3.4 ft at 6:06AM May 19, 2013Observed: 3.34 ft at 6:12AM May 19, 2013Observed: 3.28 ft at 6:18AM May 19, 2013Observed: 3.23 ft at 6:24AM May 19, 2013Observed: 3.18 ft at 6:30AM May 19, 2013Observed: 3.14 ft at 6:36AM May 19, 2013Observed: 3.08 ft at 6:42AM May 19, 2013Observed: 3.03 ft at 6:48AM May 19, 2013Observed: 2.99 ft at 6:54AM May 19, 2013Observed: 2.96 ft at 7:00AM May 19, 2013Observed: 2.91 ft at 7:06AM May 19, 2013Observed: 2.84 ft at 7:12AM May 19, 2013Observed: 2.8 ft at 7:18AM May 19, 2013Observed: 2.75 ft at 7:24AM May 19, 2013Observed: 2.73 ft at 7:30AM May 19, 2013Observed: 2.7 ft at 7:36AM May 19, 2013Observed: 2.63 ft at 7:42AM May 19, 2013Observed: 2.61 ft at 7:48AM May 19, 2013Observed: 2.55 ft at 7:54AM May 19, 2013Observed: 2.53 ft at 8:00AM May 19, 2013Observed: 2.47 ft at 8:06AM May 19, 2013Observed: 2.44 ft at 8:12AM May 19, 2013Observed: 2.42 ft at 8:18AM May 19, 2013Observed: 2.37 ft at 8:24AM May 19, 2013Observed: 2.33 ft at 8:30AM May 19, 2013Observed: 2.3 ft at 8:36AM May 19, 2013Observed: 2.26 ft at 8:42AM May 19, 2013Observed: 2.23 ft at 8:48AM May 19, 2013Observed: 2.2 ft at 8:54AM May 19, 2013Observed: 2.18 ft at 9:00AM May 19, 2013Observed: 2.13 ft at 9:06AM May 19, 2013Observed: 2.1 ft at 9:12AM May 19, 2013Observed: 2.07 ft at 9:18AM May 19, 2013Observed: 2.04 ft at 9:24AM May 19, 2013Observed: 2.03 ft at 9:30AM May 19, 2013Observed: 2.01 ft at 9:36AM May 19, 2013Observed: 1.95 ft at 9:42AM May 19, 2013Observed: 1.94 ft at 9:48AM May 19, 2013Observed: 1.92 ft at 9:54AM May 19, 2013Observed: 1.9 ft at 10:00AM May 19, 2013Observed: 1.87 ft at 10:06AM May 19, 2013Observed: 1.86 ft at 10:12AM May 19, 2013Observed: 1.84 ft at 10:18AM May 19, 2013Observed: 1.83 ft at 10:24AM May 19, 2013Observed: 1.8 ft at 10:30AM May 19, 2013Observed: 1.79 ft at 10:36AM May 19, 2013Observed: 1.78 ft at 10:42AM May 19, 2013Observed: 1.78 ft at 10:48AM May 19, 2013Observed: 1.81 ft at 10:54AM May 19, 2013Observed: 1.81 ft at 11:00AM May 19, 2013Observed: 1.83 ft at 11:06AM May 19, 2013Observed: 1.85 ft at 11:12AM May 19, 2013Observed: 1.86 ft at 11:18AM May 19, 2013Observed: 1.9 ft at 11:24AM May 19, 2013Observed: 1.92 ft at 11:30AM May 19, 2013Observed: 1.97 ft at 11:36AM May 19, 2013Observed: 2 ft at 11:42AM May 19, 2013Observed: 2.07 ft at 11:48AM May 19, 2013Observed: 2.09 ft at 11:54AM May 19, 2013Observed: 2.17 ft at 12:00PM May 19, 2013Observed: 2.25 ft at 12:06PM May 19, 2013Observed: 2.34 ft at 12:12PM May 19, 2013Observed: 2.4 ft at 12:18PM May 19, 2013Observed: 2.46 ft at 12:24PM May 19, 2013Observed: 2.54 ft at 12:30PM May 19, 2013Observed: 2.62 ft at 12:36PM May 19, 2013Observed: 2.7 ft at 12:42PM May 19, 2013Observed: 2.8 ft at 12:48PM May 19, 2013Observed: 2.89 ft at 12:54PM May 19, 2013Observed: 2.96 ft at 1:00PM May 19, 2013Observed: 3.04 ft at 1:06PM May 19, 2013Observed: 3.14 ft at 1:12PM May 19, 2013Observed: 3.19 ft at 1:18PM May 19, 2013Observed: 3.25 ft at 1:24PM May 19, 2013Observed: 3.33 ft at 1:30PM May 19, 2013Observed: 3.39 ft at 1:36PM May 19, 2013Observed: 3.44 ft at 1:42PM May 19, 2013Observed: 3.52 ft at 1:48PM May 19, 2013Observed: 3.55 ft at 1:54PM May 19, 2013Observed: 3.62 ft at 2:00PM May 19, 2013Observed: 3.66 ft at 2:06PM May 19, 2013Observed: 3.68 ft at 2:12PM May 19, 2013Observed: 3.74 ft at 2:18PM May 19, 2013Observed: 3.76 ft at 2:24PM May 19, 2013Observed: 3.79 ft at 2:30PM May 19, 2013Observed: 3.82 ft at 2:36PM May 19, 2013Observed: 3.87 ft at 2:42PM May 19, 2013Observed: 3.85 ft at 2:48PM May 19, 2013Observed: 3.9 ft at 2:54PM May 19, 2013Observed: 3.91 ft at 3:00PM May 19, 2013Observed: 3.9 ft at 3:06PM May 19, 2013Observed: 3.89 ft at 3:12PM May 19, 2013Observed: 3.91 ft at 3:18PM May 19, 2013Observed: 3.89 ft at 3:24PM May 19, 2013Observed: 3.91 ft at 3:30PM May 19, 2013Observed: 3.89 ft at 3:36PM May 19, 2013Observed: 3.89 ft at 3:42PM May 19, 2013Observed: 3.86 ft at 3:48PM May 19, 2013Observed: 3.87 ft at 3:54PM May 19, 2013Observed: 3.83 ft at 4:00PM May 19, 2013Observed: 3.81 ft at 4:06PM May 19, 2013Observed: 3.8 ft at 4:12PM May 19, 2013Observed: 3.76 ft at 4:18PM May 19, 2013Observed: 3.74 ft at 4:24PM May 19, 2013Observed: 3.68 ft at 4:30PM May 19, 2013Observed: 3.65 ft at 4:36PM May 19, 2013Observed: 3.61 ft at 4:42PM May 19, 2013Observed: 3.57 ft at 4:48PM May 19, 2013Observed: 3.55 ft at 4:54PM May 19, 2013Observed: 3.51 ft at 5:00PM May 19, 2013Observed: 3.43 ft at 5:06PM May 19, 2013Observed: 3.42 ft at 5:12PM May 19, 2013Observed: 3.34 ft at 5:18PM May 19, 2013Observed: 3.3 ft at 5:24PM May 19, 2013Observed: 3.28 ft at 5:30PM May 19, 2013Observed: 3.22 ft at 5:36PM May 19, 2013Observed: 3.15 ft at 5:42PM May 19, 2013Observed: 3.11 ft at 5:48PM May 19, 2013Observed: 3.06 ft at 5:54PM May 19, 2013Observed: 2.99 ft at 6:00PM May 19, 2013Observed: 2.95 ft at 6:06PM May 19, 2013Observed: 2.86 ft at 6:12PM May 19, 2013Observed: 2.82 ft at 6:18PM May 19, 2013Observed: 2.79 ft at 6:24PM May 19, 2013Observed: 2.73 ft at 6:30PM May 19, 2013Observed: 2.69 ft at 6:36PM May 19, 2013Observed: 2.61 ft at 6:42PM May 19, 2013Observed: 2.58 ft at 6:48PM May 19, 2013Observed: 2.52 ft at 6:54PM May 19, 2013Observed: 2.48 ft at 7:00PM May 19, 2013Observed: 2.42 ft at 7:06PM May 19, 2013Observed: 2.39 ft at 7:12PM May 19, 2013Observed: 2.32 ft at 7:18PM May 19, 2013Observed: 2.29 ft at 7:24PM May 19, 2013Observed: 2.2 ft at 7:30PM May 19, 2013Observed: 2.19 ft at 7:36PM May 19, 2013Observed: 2.15 ft at 7:42PM May 19, 2013Observed: 2.09 ft at 7:48PM May 19, 2013Observed: 2.04 ft at 7:54PM May 19, 2013Observed: 2.01 ft at 8:00PM May 19, 2013Observed: 1.97 ft at 8:06PM May 19, 2013Observed: 1.94 ft at 8:12PM May 19, 2013Observed: 1.89 ft at 8:18PM May 19, 2013Observed: 1.83 ft at 8:24PM May 19, 2013Observed: 1.8 ft at 8:30PM May 19, 2013Observed: 1.79 ft at 8:36PM May 19, 2013Observed: 1.75 ft at 8:42PM May 19, 2013Observed: 1.69 ft at 8:48PM May 19, 2013Observed: 1.66 ft at 8:54PM May 19, 2013Observed: 1.66 ft at 9:00PM May 19, 2013Observed: 1.61 ft at 9:06PM May 19, 2013Observed: 1.59 ft at 9:12PM May 19, 2013Observed: 1.55 ft at 9:18PM May 19, 2013Observed: 1.53 ft at 9:24PM May 19, 2013Observed: 1.49 ft at 9:30PM May 19, 2013Observed: 1.48 ft at 9:36PM May 19, 2013Observed: 1.48 ft at 9:42PM May 19, 2013Observed: 1.43 ft at 9:48PM May 19, 2013Observed: 1.42 ft at 9:54PM May 19, 2013Observed: 1.42 ft at 10:00PM May 19, 2013Observed: 1.39 ft at 10:06PM May 19, 2013Observed: 1.37 ft at 10:12PM May 19, 2013Observed: 1.36 ft at 10:18PM May 19, 2013Observed: 1.35 ft at 10:24PM May 19, 2013Observed: 1.34 ft at 10:30PM May 19, 2013Observed: 1.34 ft at 10:36PM May 19, 2013Observed: 1.34 ft at 10:42PM May 19, 2013Observed: 1.34 ft at 10:48PM May 19, 2013Observed: 1.35 ft at 10:54PM May 19, 2013Observed: 1.34 ft at 11:00PM May 19, 2013Observed: 1.37 ft at 11:06PM May 19, 2013Observed: 1.39 ft at 11:12PM May 19, 2013Observed: 1.39 ft at 11:18PM May 19, 2013Observed: 1.43 ft at 11:24PM May 19, 2013Observed: 1.44 ft at 11:30PM May 19, 2013Observed: 1.45 ft at 11:36PM May 19, 2013Observed: 1.5 ft at 11:42PM May 19, 2013Observed: 1.54 ft at 11:48PM May 19, 2013Observed: 1.59 ft at 11:54PM May 19, 2013Observed: 1.66 ft at 12:00AM May 20, 2013Observed: 1.7 ft at 12:06AM May 20, 2013Observed: 1.77 ft at 12:12AM May 20, 2013Observed: 1.83 ft at 12:18AM May 20, 2013Observed: 1.91 ft at 12:24AM May 20, 2013Observed: 2 ft at 12:30AM May 20, 2013Observed: 2.05 ft at 12:36AM May 20, 2013Observed: 2.15 ft at 12:42AM May 20, 2013Observed: 2.23 ft at 12:48AM May 20, 2013Observed: 2.31 ft at 12:54AM May 20, 2013Observed: 2.42 ft at 1:00AM May 20, 2013Observed: 2.51 ft at 1:06AM May 20, 2013Observed: 2.57 ft at 1:12AM May 20, 2013Observed: 2.68 ft at 1:18AM May 20, 2013Observed: 2.77 ft at 1:24AM May 20, 2013Observed: 2.84 ft at 1:30AM May 20, 2013Observed: 2.91 ft at 1:36AM May 20, 2013Observed: 3 ft at 1:42AM May 20, 2013Observed: 3.08 ft at 1:48AM May 20, 2013Observed: 3.18 ft at 1:54AM May 20, 2013Observed: 3.24 ft at 2:00AM May 20, 2013Observed: 3.33 ft at 2:06AM May 20, 2013Observed: 3.38 ft at 2:12AM May 20, 2013Observed: 3.45 ft at 2:18AM May 20, 2013Observed: 3.5 ft at 2:24AM May 20, 2013Observed: 3.56 ft at 2:30AM May 20, 2013Observed: 3.62 ft at 2:36AM May 20, 2013Observed: 3.67 ft at 2:42AM May 20, 2013Observed: 3.72 ft at 2:48AM May 20, 2013Observed: 3.78 ft at 2:54AM May 20, 2013Observed: 3.8 ft at 3:00AM May 20, 2013Observed: 3.87 ft at 3:06AM May 20, 2013Observed: 3.89 ft at 3:12AM May 20, 2013Observed: 3.92 ft at 3:18AM May 20, 2013Observed: 3.95 ft at 3:24AM May 20, 2013Observed: 3.98 ft at 3:30AM May 20, 2013Observed: 4.01 ft at 3:36AM May 20, 2013Observed: 4.04 ft at 3:42AM May 20, 2013Observed: 4.06 ft at 3:48AM May 20, 2013Observed: 4.09 ft at 3:54AM May 20, 2013Observed: 4.1 ft at 4:00AM May 20, 2013Observed: 4.14 ft at 4:06AM May 20, 2013Observed: 4.13 ft at 4:12AM May 20, 2013Observed: 4.14 ft at 4:18AM May 20, 2013Observed: 4.14 ft at 4:24AM May 20, 2013Observed: 4.15 ft at 4:30AM May 20, 2013Observed: 4.17 ft at 4:36AM May 20, 2013Observed: 4.14 ft at 4:42AM May 20, 2013Observed: 4.13 ft at 4:48AM May 20, 2013Observed: 4.14 ft at 4:54AM May 20, 2013Observed: 4.1 ft at 5:00AM May 20, 2013Observed: 4.08 ft at 5:06AM May 20, 2013Observed: 4.08 ft at 5:12AM May 20, 2013Observed: 4.03 ft at 5:18AM May 20, 2013Observed: 4 ft at 5:24AM May 20, 2013Observed: 3.99 ft at 5:30AM May 20, 2013Observed: 3.95 ft at 5:36AM May 20, 2013Observed: 3.9 ft at 5:42AM May 20, 2013Observed: 3.87 ft at 5:48AM May 20, 2013Observed: 3.81 ft at 5:54AM May 20, 2013Observed: 3.77 ft at 6:00AM May 20, 2013Observed: 3.73 ft at 6:06AM May 20, 2013Observed: 3.67 ft at 6:12AM May 20, 2013Observed: 3.63 ft at 6:18AM May 20, 2013Observed: 3.59 ft at 6:24AM May 20, 2013Observed: 3.55 ft at 6:30AM May 20, 2013Observed: 3.46 ft at 6:36AM May 20, 2013Observed: 3.43 ft at 6:42AM May 20, 2013Observed: 3.36 ft at 6:48AM May 20, 2013Observed: 3.32 ft at 6:54AM May 20, 2013Observed: 3.23 ft at 7:00AM May 20, 2013Observed: 3.19 ft at 7:06AM May 20, 2013Observed: 3.11 ft at 7:12AM May 20, 2013Observed: 3.07 ft at 7:18AM May 20, 2013Observed: 3.03 ft at 7:24AM May 20, 2013Observed: 2.96 ft at 7:30AM May 20, 2013Observed: 2.91 ft at 7:36AM May 20, 2013Observed: 2.85 ft at 7:42AM May 20, 2013Observed: 2.81 ft at 7:48AM May 20, 2013Observed: 2.75 ft at 7:54AM May 20, 2013Observed: 2.7 ft at 8:00AM May 20, 2013Observed: 2.65 ft at 8:06AM May 20, 2013Observed: 2.59 ft at 8:12AM May 20, 2013Observed: 2.52 ft at 8:18AM May 20, 2013Observed: 2.46 ft at 8:24AM May 20, 2013Observed: 2.43 ft at 8:30AM May 20, 2013Observed: 2.38 ft at 8:36AM May 20, 2013Observed: 2.32 ft at 8:42AM May 20, 2013Observed: 2.27 ft at 8:48AM May 20, 2013Observed: 2.2 ft at 8:54AM May 20, 2013Observed: 2.16 ft at 9:00AM May 20, 2013Observed: 2.11 ft at 9:06AM May 20, 2013Observed: 2.07 ft at 9:12AM May 20, 2013Observed: 2.04 ft at 9:18AM May 20, 2013Observed: 1.98 ft at 9:24AM May 20, 2013Observed: 1.94 ft at 9:30AM May 20, 2013Observed: 1.9 ft at 9:36AM May 20, 2013Observed: 1.88 ft at 9:42AM May 20, 2013Observed: 1.81 ft at 9:48AM May 20, 2013Observed: 1.77 ft at 9:54AM May 20, 2013Observed: 1.73 ft at 10:00AM May 20, 2013Observed: 1.72 ft at 10:06AM May 20, 2013Observed: 1.67 ft at 10:12AM May 20, 2013Observed: 1.63 ft at 10:18AM May 20, 2013Observed: 1.6 ft at 10:24AM May 20, 2013Observed: 1.58 ft at 10:30AM May 20, 2013Observed: 1.56 ft at 10:36AM May 20, 2013Observed: 1.54 ft at 10:42AM May 20, 2013Observed: 1.51 ft at 10:48AM May 20, 2013Observed: 1.5 ft at 10:54AM May 20, 2013Observed: 1.48 ft at 11:00AM May 20, 2013Observed: 1.45 ft at 11:06AM May 20, 2013Observed: 1.44 ft at 11:12AM May 20, 2013Observed: 1.39 ft at 11:18AM May 20, 2013Observed: 1.39 ft at 11:24AM May 20, 2013Observed: 1.37 ft at 11:30AM May 20, 2013Observed: 1.38 ft at 11:36AM May 20, 2013Observed: 1.35 ft at 11:42AM May 20, 2013Observed: 1.35 ft at 11:48AM May 20, 2013Observed: 1.35 ft at 11:54AM May 20, 2013Observed: 1.36 ft at 12:00PM May 20, 2013Observed: 1.38 ft at 12:06PM May 20, 2013Observed: 1.37 ft at 12:12PM May 20, 2013Observed: 1.39 ft at 12:18PM May 20, 2013Observed: 1.43 ft at 12:24PM May 20, 2013Observed: 1.45 ft at 12:30PM May 20, 2013Observed: 1.52 ft at 12:36PM May 20, 2013Observed: 1.56 ft at 12:42PM May 20, 2013Observed: 1.6 ft at 12:48PM May 20, 2013Observed: 1.65 ft at 12:54PM May 20, 2013Observed: 1.73 ft at 1:00PM May 20, 2013Observed: 1.79 ft at 1:06PM May 20, 2013Observed: 1.86 ft at 1:12PM May 20, 2013Observed: 1.94 ft at 1:18PM May 20, 2013Observed: 2.01 ft at 1:24PM May 20, 2013Observed: 2.12 ft at 1:30PM May 20, 2013Observed: 2.18 ft at 1:36PM May 20, 2013Observed: 2.3 ft at 1:42PM May 20, 2013Observed: 2.36 ft at 1:48PM May 20, 2013Observed: 2.45 ft at 1:54PM May 20, 2013Observed: 2.53 ft at 2:00PM May 20, 2013Observed: 2.64 ft at 2:06PM May 20, 2013Observed: 2.72 ft at 2:12PM May 20, 2013Observed: 2.8 ft at 2:18PM May 20, 2013Observed: 2.86 ft at 2:24PM May 20, 2013Observed: 2.94 ft at 2:30PM May 20, 2013Observed: 3.03 ft at 2:36PM May 20, 2013Observed: 3.11 ft at 2:42PM May 20, 2013Observed: 3.18 ft at 2:48PM May 20, 2013Observed: 3.21 ft at 2:54PM May 20, 2013Observed: 3.27 ft at 3:00PM May 20, 2013Observed: 3.31 ft at 3:06PM May 20, 2013Observed: 3.39 ft at 3:12PM May 20, 2013Observed: 3.42 ft at 3:18PM May 20, 2013Observed: 3.46 ft at 3:24PM May 20, 2013Observed: 3.51 ft at 3:30PM May 20, 2013Observed: 3.54 ft at 3:36PM May 20, 2013Observed: 3.57 ft at 3:42PM May 20, 2013Observed: 3.63 ft at 3:48PM May 20, 2013Observed: 3.64 ft at 3:54PM May 20, 2013Observed: 3.67 ft at 4:00PM May 20, 2013Observed: 3.69 ft at 4:06PM May 20, 2013Observed: 3.73 ft at 4:12PM May 20, 2013Observed: 3.72 ft at 4:18PM May 20, 2013Observed: 3.75 ft at 4:24PM May 20, 2013Observed: 3.77 ft at 4:30PM May 20, 2013Observed: 3.76 ft at 4:36PM May 20, 2013Observed: 3.74 ft at 4:42PM May 20, 2013Observed: 3.76 ft at 4:48PM May 20, 2013Observed: 3.78 ft at 4:54PM May 20, 2013Observed: 3.76 ft at 5:00PM May 20, 2013Observed: 3.74 ft at 5:06PM May 20, 2013Observed: 3.75 ft at 5:12PM May 20, 2013Observed: 3.74 ft at 5:18PM May 20, 2013Observed: 3.73 ft at 5:24PM May 20, 2013Observed: 3.68 ft at 5:30PM May 20, 2013Observed: 3.7 ft at 5:36PM May 20, 2013Observed: 3.68 ft at 5:42PM May 20, 2013Observed: 3.61 ft at 5:48PM May 20, 2013Observed: 3.57 ft at 5:54PM May 20, 2013Observed: 3.53 ft at 6:00PM May 20, 2013Observed: 3.51 ft at 6:06PM May 20, 2013Observed: 3.46 ft at 6:12PM May 20, 2013Observed: 3.43 ft at 6:18PM May 20, 2013Observed: 3.37 ft at 6:24PM May 20, 2013Observed: 3.31 ft at 6:30PM May 20, 2013Observed: 3.26 ft at 6:36PM May 20, 2013Observed: 3.22 ft at 6:42PM May 20, 2013Observed: 3.16 ft at 6:48PM May 20, 2013Observed: 3.1 ft at 6:54PM May 20, 2013Observed: 3.06 ft at 7:00PM May 20, 2013Observed: 2.98 ft at 7:06PM May 20, 2013Observed: 2.93 ft at 7:12PM May 20, 2013Observed: 2.89 ft at 7:18PM May 20, 2013Observed: 2.83 ft at 7:24PM May 20, 2013Observed: 2.77 ft at 7:30PM May 20, 2013Observed: 2.74 ft at 7:36PM May 20, 2013Observed: 2.68 ft at 7:42PM May 20, 2013Observed: 2.62 ft at 7:48PM May 20, 2013Observed: 2.56 ft at 7:54PM May 20, 2013Observed: 2.54 ft at 8:00PM May 20, 2013Observed: 2.48 ft at 8:06PM May 20, 2013Observed: 2.43 ft at 8:12PM May 20, 2013Observed: 2.37 ft at 8:18PM May 20, 2013Observed: 2.33 ft at 8:24PM May 20, 2013Observed: 2.29 ft at 8:30PM May 20, 2013Observed: 2.21 ft at 8:36PM May 20, 2013Observed: 2.16 ft at 8:42PM May 20, 2013Observed: 2.13 ft at 8:48PM May 20, 2013Observed: 2.05 ft at 8:54PM May 20, 2013Observed: 2.01 ft at 9:00PM May 20, 2013Observed: 1.97 ft at 9:06PM May 20, 2013Observed: 1.93 ft at 9:12PM May 20, 2013Observed: 1.88 ft at 9:18PM May 20, 2013Observed: 1.84 ft at 9:24PM May 20, 2013Observed: 1.8 ft at 9:30PM May 20, 2013Observed: 1.77 ft at 9:36PM May 20, 2013Observed: 1.73 ft at 9:42PM May 20, 2013Observed: 1.72 ft at 9:48PM May 20, 2013Observed: 1.66 ft at 9:54PM May 20, 2013Observed: 1.64 ft at 10:00PM May 20, 2013Observed: 1.59 ft at 10:06PM May 20, 2013Observed: 1.56 ft at 10:12PM May 20, 2013Observed: 1.54 ft at 10:18PM May 20, 2013Observed: 1.53 ft at 10:24PM May 20, 2013Observed: 1.49 ft at 10:30PM May 20, 2013Observed: 1.47 ft at 10:36PM May 20, 2013Observed: 1.45 ft at 10:42PM May 20, 2013Observed: 1.45 ft at 10:48PM May 20, 2013Observed: 1.43 ft at 10:54PM May 20, 2013Observed: 1.42 ft at 11:00PM May 20, 2013Observed: 1.39 ft at 11:06PM May 20, 2013Observed: 1.39 ft at 11:12PM May 20, 2013Observed: 1.41 ft at 11:18PM May 20, 2013Observed: 1.37 ft at 11:24PM May 20, 2013Observed: 1.39 ft at 11:30PM May 20, 2013Observed: 1.37 ft at 11:36PM May 20, 2013Observed: 1.37 ft at 11:42PM May 20, 2013Observed: 1.41 ft at 11:48PM May 20, 2013Observed: 1.41 ft at 11:54PM May 20, 2013Observed: 1.42 ft at 12:00AM May 21, 2013Observed: 1.44 ft at 12:06AM May 21, 2013Observed: 1.48 ft at 12:12AM May 21, 2013Observed: 1.52 ft at 12:18AM May 21, 2013Observed: 1.57 ft at 12:24AM May 21, 2013Observed: 1.61 ft at 12:30AM May 21, 2013Observed: 1.66 ft at 12:36AM May 21, 2013Observed: 1.75 ft at 12:42AM May 21, 2013Observed: 1.79 ft at 12:48AM May 21, 2013Observed: 1.85 ft at 12:54AM May 21, 2013Observed: 2.85 ft at 2:00AM May 21, 2013Observed: 2.96 ft at 2:06AM May 21, 2013Observed: 3.04 ft at 2:12AM May 21, 2013Observed: 3.13 ft at 2:18AM May 21, 2013Observed: 3.24 ft at 2:24AM May 21, 2013Observed: 3.3 ft at 2:30AM May 21, 2013Observed: 3.38 ft at 2:36AM May 21, 2013Observed: 3.46 ft at 2:42AM May 21, 2013Observed: 3.55 ft at 2:48AM May 21, 2013Observed: 3.6 ft at 2:54AM May 21, 2013Observed: 3.66 ft at 3:00AM May 21, 2013Observed: 3.72 ft at 3:06AM May 21, 2013Observed: 3.8 ft at 3:12AM May 21, 2013Observed: 3.84 ft at 3:18AM May 21, 2013Observed: 3.88 ft at 3:24AM May 21, 2013Observed: 3.95 ft at 3:30AM May 21, 2013Observed: 4 ft at 3:36AM May 21, 2013Observed: 4.02 ft at 3:42AM May 21, 2013Observed: 4.06 ft at 3:48AM May 21, 2013Observed: 4.09 ft at 3:54AM May 21, 2013Observed: 4.12 ft at 4:00AM May 21, 2013Observed: 4.16 ft at 4:06AM May 21, 2013Observed: 4.2 ft at 4:12AM May 21, 2013Observed: 4.22 ft at 4:18AM May 21, 2013Observed: 4.23 ft at 4:24AM May 21, 2013Observed: 4.29 ft at 4:30AM May 21, 2013Observed: 4.3 ft at 4:36AM May 21, 2013Observed: 4.32 ft at 4:42AM May 21, 2013Observed: 4.32 ft at 4:48AM May 21, 2013Observed: 4.33 ft at 4:54AM May 21, 2013Observed: 4.34 ft at 5:00AM May 21, 2013Observed: 4.37 ft at 5:06AM May 21, 2013Observed: 4.37 ft at 5:12AM May 21, 2013Observed: 4.37 ft at 5:18AM May 21, 2013Observed: 4.35 ft at 5:24AM May 21, 2013Observed: 4.34 ft at 5:30AM May 21, 2013Observed: 4.34 ft at 5:36AM May 21, 2013Observed: 4.33 ft at 5:42AM May 21, 2013Observed: 4.33 ft at 5:48AM May 21, 2013Observed: 4.28 ft at 5:54AM May 21, 2013Observed: 4.25 ft at 6:00AM May 21, 2013Observed: 4.23 ft at 6:06AM May 21, 2013Observed: 4.18 ft at 6:12AM May 21, 2013Observed: 4.15 ft at 6:18AM May 21, 2013Observed: 4.1 ft at 6:24AM May 21, 2013Observed: 4.07 ft at 6:30AM May 21, 2013Observed: 4 ft at 6:36AM May 21, 2013Observed: 3.96 ft at 6:42AM May 21, 2013Observed: 3.91 ft at 6:48AM May 21, 2013Observed: 3.85 ft at 6:54AM May 21, 2013Observed: 3.82 ft at 7:00AM May 21, 2013Observed: 3.75 ft at 7:06AM May 21, 2013Observed: 3.7 ft at 7:12AM May 21, 2013Observed: 3.64 ft at 7:18AM May 21, 2013Observed: 3.59 ft at 7:24AM May 21, 2013Observed: 3.52 ft at 7:30AM May 21, 2013Observed: 3.47 ft at 7:36AM May 21, 2013Observed: 3.41 ft at 7:42AM May 21, 2013Observed: 3.35 ft at 7:48AM May 21, 2013Observed: 3.28 ft at 7:54AM May 21, 2013Observed: 3.23 ft at 8:00AM May 21, 2013Observed: 3.15 ft at 8:06AM May 21, 2013Observed: 3.11 ft at 8:12AM May 21, 2013Observed: 3.05 ft at 8:18AM May 21, 2013Observed: 2.98 ft at 8:24AM May 21, 2013Observed: 2.93 ft at 8:30AM May 21, 2013Observed: 2.88 ft at 8:36AM May 21, 2013Observed: 2.83 ft at 8:42AM May 21, 2013Observed: 2.77 ft at 8:48AM May 21, 2013Observed: 2.69 ft at 8:54AM May 21, 2013Observed: 2.64 ft at 9:00AM May 21, 2013Observed: 2.58 ft at 9:06AM May 21, 2013Observed: 2.53 ft at 9:12AM May 21, 2013Observed: 2.48 ft at 9:18AM May 21, 2013Observed: 2.43 ft at 9:24AM May 21, 2013Observed: 2.36 ft at 9:30AM May 21, 2013Observed: 2.34 ft at 9:36AM May 21, 2013Observed: 2.27 ft at 9:42AM May 21, 2013Observed: 2.21 ft at 9:48AM May 21, 2013Observed: 2.17 ft at 9:54AM May 21, 2013Observed: 2.12 ft at 10:00AM May 21, 2013Observed: 2.08 ft at 10:06AM May 21, 2013Observed: 2.04 ft at 10:12AM May 21, 2013Observed: 1.98 ft at 10:18AM May 21, 2013Observed: 1.95 ft at 10:24AM May 21, 2013Observed: 1.91 ft at 10:30AM May 21, 2013Observed: 1.86 ft at 10:36AM May 21, 2013Observed: 1.84 ft at 10:42AM May 21, 2013Observed: 1.78 ft at 10:48AM May 21, 2013Observed: 1.74 ft at 10:54AM May 21, 2013Observed: 1.71 ft at 11:00AM May 21, 2013Observed: 1.68 ft at 11:06AM May 21, 2013Observed: 1.63 ft at 11:12AM May 21, 2013Observed: 1.61 ft at 11:18AM May 21, 2013Observed: 1.58 ft at 11:24AM May 21, 2013Observed: 1.54 ft at 11:30AM May 21, 2013Observed: 1.51 ft at 11:36AM May 21, 2013Observed: 1.49 ft at 11:42AM May 21, 2013Observed: 1.46 ft at 11:48AM May 21, 2013Observed: 1.45 ft at 11:54AM May 21, 2013Observed: 1.44 ft at 12:00PM May 21, 2013Observed: 1.4 ft at 12:06PM May 21, 2013Observed: 1.4 ft at 12:12PM May 21, 2013Observed: 1.39 ft at 12:18PM May 21, 2013Observed: 1.36 ft at 12:24PM May 21, 2013Observed: 1.34 ft at 12:30PM May 21, 2013Observed: 1.34 ft at 12:36PM May 21, 2013Observed: 1.33 ft at 12:42PM May 21, 2013Observed: 1.32 ft at 12:48PM May 21, 2013Observed: 1.32 ft at 12:54PM May 21, 2013Observed: 1.31 ft at 1:00PM May 21, 2013Observed: 1.34 ft at 1:06PM May 21, 2013Observed: 1.36 ft at 1:12PM May 21, 2013Observed: 1.42 ft at 1:18PM May 21, 2013Observed: 1.41 ft at 1:24PM May 21, 2013Observed: 1.45 ft at 1:30PM May 21, 2013Observed: 1.47 ft at 1:36PM May 21, 2013Observed: 1.53 ft at 1:42PM May 21, 2013Observed: 1.56 ft at 1:48PM May 21, 2013Observed: 1.61 ft at 1:54PM May 21, 2013Observed: 1.68 ft at 2:00PM May 21, 2013Observed: 1.75 ft at 2:06PM May 21, 2013Observed: 1.84 ft at 2:12PM May 21, 2013Observed: 1.92 ft at 2:18PM May 21, 2013Observed: 1.99 ft at 2:24PM May 21, 2013Observed: 2.08 ft at 2:30PM May 21, 2013Observed: 2.2 ft at 2:36PM May 21, 2013Observed: 2.29 ft at 2:42PM May 21, 2013Observed: 2.39 ft at 2:48PM May 21, 2013Observed: 2.47 ft at 2:54PM May 21, 2013Observed: 2.57 ft at 3:00PM May 21, 2013Observed: 2.66 ft at 3:06PM May 21, 2013Observed: 2.75 ft at 3:12PM May 21, 2013Observed: 2.83 ft at 3:18PM May 21, 2013Observed: 2.9 ft at 3:24PM May 21, 2013Observed: 2.98 ft at 3:30PM May 21, 2013Observed: 3.06 ft at 3:36PM May 21, 2013Observed: 3.13 ft at 3:42PM May 21, 2013Observed: 3.2 ft at 3:48PM May 21, 2013Observed: 3.25 ft at 3:54PM May 21, 2013Observed: 3.31 ft at 4:00PM May 21, 2013Observed: 3.36 ft at 4:06PM May 21, 2013Observed: 3.42 ft at 4:12PM May 21, 2013Observed: 3.47 ft at 4:18PM May 21, 2013Observed: 3.52 ft at 4:24PM May 21, 2013Observed: 3.55 ft at 4:30PM May 21, 2013Observed: 3.58 ft at 4:36PM May 21, 2013Observed: 3.65 ft at 4:42PM May 21, 2013Observed: 3.7 ft at 4:48PM May 21, 2013Observed: 3.71 ft at 4:54PM May 21, 2013Observed: 3.78 ft at 5:00PM May 21, 2013Observed: 3.79 ft at 5:06PM May 21, 2013Observed: 3.82 ft at 5:12PM May 21, 2013Observed: 3.84 ft at 5:18PM May 21, 2013Observed: 3.87 ft at 5:24PM May 21, 2013Observed: 3.86 ft at 5:30PM May 21, 2013Observed: 3.9 ft at 5:36PM May 21, 2013Observed: 3.92 ft at 5:42PM May 21, 2013Observed: 3.85 ft at 5:48PM May 21, 2013Observed: 3.86 ft at 5:54PM May 21, 2013Observed: 3.86 ft at 6:00PM May 21, 2013Observed: 3.88 ft at 6:06PM May 21, 2013Observed: 3.82 ft at 6:12PM May 21, 2013Observed: 3.84 ft at 6:18PM May 21, 2013Observed: 3.8 ft at 6:24PM May 21, 2013Observed: 3.78 ft at 6:30PM May 21, 2013Observed: 3.72 ft at 6:36PM May 21, 2013Observed: 3.7 ft at 6:42PM May 21, 2013Observed: 3.68 ft at 6:48PM May 21, 2013Observed: 3.63 ft at 6:54PM May 21, 2013Observed: 3.57 ft at 7:00PM May 21, 2013Observed: 3.52 ft at 7:06PM May 21, 2013Observed: 3.47 ft at 7:12PM May 21, 2013Observed: 3.42 ft at 7:18PM May 21, 2013Observed: 3.37 ft at 7:24PM May 21, 2013Observed: 3.32 ft at 7:30PM May 21, 2013Observed: 3.25 ft at 7:36PM May 21, 2013Observed: 3.22 ft at 7:42PM May 21, 2013Observed: 3.12 ft at 7:48PM May 21, 2013Observed: 3.07 ft at 7:54PM May 21, 2013Observed: 3 ft at 8:00PM May 21, 2013Observed: 2.94 ft at 8:06PM May 21, 2013Observed: 2.89 ft at 8:12PM May 21, 2013Observed: 2.82 ft at 8:18PM May 21, 2013Observed: 2.77 ft at 8:24PM May 21, 2013Observed: 2.72 ft at 8:30PM May 21, 2013Observed: 2.64 ft at 8:36PM May 21, 2013Observed: 2.58 ft at 8:42PM May 21, 2013Observed: 2.53 ft at 8:48PM May 21, 2013Observed: 2.46 ft at 8:54PM May 21, 2013Observed: 2.42 ft at 9:00PM May 21, 2013Observed: 2.34 ft at 9:06PM May 21, 2013Observed: 2.29 ft at 9:12PM May 21, 2013Observed: 2.23 ft at 9:18PM May 21, 2013Observed: 2.18 ft at 9:24PM May 21, 2013Observed: 2.12 ft at 9:30PM May 21, 2013Observed: 2.06 ft at 9:36PM May 21, 2013Observed: 2.01 ft at 9:42PM May 21, 2013Observed: 1.96 ft at 9:48PM May 21, 2013Observed: 1.93 ft at 9:54PM May 21, 2013Observed: 1.85 ft at 10:00PM May 21, 2013Observed: 1.83 ft at 10:06PM May 21, 2013Observed: 1.77 ft at 10:12PM May 21, 2013Observed: 1.71 ft at 10:18PM May 21, 2013Observed: 1.67 ft at 10:24PM May 21, 2013Observed: 1.63 ft at 10:30PM May 21, 2013Observed: 1.59 ft at 10:36PM May 21, 2013Observed: 1.54 ft at 10:42PM May 21, 2013Observed: 1.51 ft at 10:48PM May 21, 2013Observed: 1.44 ft at 10:54PM May 21, 2013Observed: 1.4 ft at 11:00PM May 21, 2013Observed: 1.38 ft at 11:06PM May 21, 2013Observed: 1.32 ft at 11:12PM May 21, 2013Observed: 1.3 ft at 11:18PM May 21, 2013Observed: 1.25 ft at 11:24PM May 21, 2013Observed: 1.24 ft at 11:30PM May 21, 2013Observed: 1.19 ft at 11:36PM May 21, 2013Observed: 1.18 ft at 11:42PM May 21, 2013Observed: 1.14 ft at 11:48PM May 21, 2013Observed: 1.1 ft at 11:54PM May 21, 2013Observed: 1.1 ft at 12:00AM May 22, 2013Observed: 1.06 ft at 12:06AM May 22, 2013Observed: 1.06 ft at 12:12AM May 22, 2013Observed: 1.05 ft at 12:18AM May 22, 2013Observed: 1.01 ft at 12:24AM May 22, 2013Observed: 0.99 ft at 12:30AM May 22, 2013Observed: 1 ft at 12:36AM May 22, 2013Observed: 1 ft at 12:42AM May 22, 2013Observed: 0.97 ft at 12:48AM May 22, 2013Observed: 1 ft at 12:54AM May 22, 2013Observed: 0.98 ft at 1:00AM May 22, 2013Observed: 0.99 ft at 1:06AM May 22, 2013Observed: 1.03 ft at 1:12AM May 22, 2013Observed: 1.02 ft at 1:18AM May 22, 2013Observed: 1.05 ft at 1:24AM May 22, 2013Observed: 1.09 ft at 1:30AM May 22, 2013Observed: 1.14 ft at 1:36AM May 22, 2013Observed: 1.2 ft at 1:42AM May 22, 2013Observed: 1.29 ft at 1:48AM May 22, 2013Observed: 1.34 ft at 1:54AM May 22, 2013Observed: 1.44 ft at 2:00AM May 22, 2013Observed: 1.5 ft at 2:06AM May 22, 2013Observed: 1.59 ft at 2:12AM May 22, 2013Observed: 1.68 ft at 2:18AM May 22, 2013Observed: 1.78 ft at 2:24AM May 22, 2013Observed: 1.9 ft at 2:30AM May 22, 2013Observed: 2.01 ft at 2:36AM May 22, 2013Observed: 2.13 ft at 2:42AM May 22, 2013Observed: 2.23 ft at 2:48AM May 22, 2013Observed: 2.36 ft at 2:54AM May 22, 2013Observed: 2.46 ft at 3:00AM May 22, 2013Observed: 2.56 ft at 3:06AM May 22, 2013Observed: 2.66 ft at 3:12AM May 22, 2013Observed: 2.76 ft at 3:18AM May 22, 2013Observed: 2.88 ft at 3:24AM May 22, 2013Observed: 2.95 ft at 3:30AM May 22, 2013Observed: 3.05 ft at 3:36AM May 22, 2013Observed: 3.13 ft at 3:42AM May 22, 2013Observed: 3.22 ft at 3:48AM May 22, 2013Observed: 3.29 ft at 3:54AM May 22, 2013Observed: 3.37 ft at 4:00AM May 22, 2013Observed: 3.47 ft at 4:06AM May 22, 2013Observed: 3.52 ft at 4:12AM May 22, 2013Observed: 3.58 ft at 4:18AM May 22, 2013Observed: 3.65 ft at 4:24AM May 22, 2013Observed: 3.72 ft at 4:30AM May 22, 2013Observed: 3.77 ft at 4:36AM May 22, 2013Observed: 3.84 ft at 4:42AM May 22, 2013Observed: 3.9 ft at 4:48AM May 22, 2013Observed: 3.97 ft at 4:54AM May 22, 2013Observed: 4.01 ft at 5:00AM May 22, 2013Observed: 4.05 ft at 5:06AM May 22, 2013Observed: 4.08 ft at 5:12AM May 22, 2013Observed: 4.12 ft at 5:18AM May 22, 2013Observed: 4.17 ft at 5:24AM May 22, 2013Observed: 4.2 ft at 5:30AM May 22, 2013Observed: 4.22 ft at 5:36AM May 22, 2013Observed: 4.27 ft at 5:42AM May 22, 2013Observed: 4.26 ft at 5:48AM May 22, 2013Observed: 4.29 ft at 5:54AM May 22, 2013Observed: 4.28 ft at 6:00AM May 22, 2013Observed: 4.32 ft at 6:06AM May 22, 2013Observed: 4.31 ft at 6:12AM May 22, 2013Observed: 4.31 ft at 6:18AM May 22, 2013Observed: 4.3 ft at 6:24AM May 22, 2013Observed: 4.3 ft at 6:30AM May 22, 2013Observed: 4.3 ft at 6:36AM May 22, 2013Observed: 4.27 ft at 6:42AM May 22, 2013Observed: 4.26 ft at 6:48AM May 22, 2013Observed: 4.24 ft at 6:54AM May 22, 2013Observed: 4.21 ft at 7:00AM May 22, 2013Observed: 4.19 ft at 7:06AM May 22, 2013Observed: 4.16 ft at 7:12AM May 22, 2013Observed: 4.14 ft at 7:18AM May 22, 2013Observed: 4.05 ft at 7:24AM May 22, 2013Observed: 4.02 ft at 7:30AM May 22, 2013Observed: 4.01 ft at 7:36AM May 22, 2013Observed: 3.92 ft at 7:42AM May 22, 2013Observed: 3.87 ft at 7:48AM May 22, 2013Observed: 3.84 ft at 7:54AM May 22, 2013Observed: 2.55 ft at 10:00AM May 22, 2013Observed: 2.51 ft at 10:06AM May 22, 2013Observed: 2.47 ft at 10:12AM May 22, 2013Observed: 2.41 ft at 10:18AM May 22, 2013Observed: 2.35 ft at 10:24AM May 22, 2013Observed: 2.3 ft at 10:30AM May 22, 2013Observed: 2.25 ft at 10:36AM May 22, 2013Observed: 2.21 ft at 10:42AM May 22, 2013Observed: 2.17 ft at 10:48AM May 22, 2013Observed: 2.13 ft at 10:54AM May 22, 2013Observed: 2.05 ft at 11:00AM May 22, 2013Observed: 2.03 ft at 11:06AM May 22, 2013Observed: 1.98 ft at 11:12AM May 22, 2013Observed: 1.91 ft at 11:18AM May 22, 2013Observed: 1.89 ft at 11:24AM May 22, 2013Observed: 1.84 ft at 11:30AM May 22, 2013Observed: 1.8 ft at 11:36AM May 22, 2013Observed: 1.75 ft at 11:42AM May 22, 2013Observed: 1.71 ft at 11:48AM May 22, 2013Observed: 1.7 ft at 11:54AM May 22, 2013Observed: 1.65 ft at 12:00PM May 22, 2013Observed: 1.61 ft at 12:06PM May 22, 2013Observed: 1.57 ft at 12:12PM May 22, 2013Observed: 1.52 ft at 12:18PM May 22, 2013Observed: 1.5 ft at 12:24PM May 22, 2013Observed: 1.46 ft at 12:30PM May 22, 2013Observed: 1.45 ft at 12:36PM May 22, 2013Observed: 1.42 ft at 12:42PM May 22, 2013Observed: 1.36 ft at 12:48PM May 22, 2013Observed: 1.36 ft at 12:54PM May 22, 2013Observed: 1.29 ft at 1:00PM May 22, 2013Observed: 1.29 ft at 1:06PM May 22, 2013Observed: 1.27 ft at 1:12PM May 22, 2013Observed: 1.26 ft at 1:18PM May 22, 2013Observed: 1.24 ft at 1:24PM May 22, 2013Observed: 1.24 ft at 1:30PM May 22, 2013Observed: 1.22 ft at 1:36PM May 22, 2013Observed: 1.22 ft at 1:42PM May 22, 2013Observed: 1.23 ft at 1:48PM May 22, 2013Observed: 1.26 ft at 1:54PM May 22, 2013Observed: 1.27 ft at 2:00PM May 22, 2013Observed: 1.28 ft at 2:06PM May 22, 2013Observed: 1.3 ft at 2:12PM May 22, 2013Observed: 1.34 ft at 2:18PM May 22, 2013Observed: 1.41 ft at 2:24PM May 22, 2013Observed: 1.46 ft at 2:30PM May 22, 2013Observed: 1.54 ft at 2:36PM May 22, 2013Observed: 1.56 ft at 2:42PM May 22, 2013Observed: 1.66 ft at 2:48PM May 22, 2013Observed: 1.73 ft at 2:54PM May 22, 2013Observed: 1.85 ft at 3:00PM May 22, 2013Observed: 1.91 ft at 3:06PM May 22, 2013Observed: 1.99 ft at 3:12PM May 22, 2013Observed: 2.12 ft at 3:18PM May 22, 2013Observed: 2.19 ft at 3:24PM May 22, 2013Observed: 2.31 ft at 3:30PM May 22, 2013Observed: 2.42 ft at 3:36PM May 22, 2013Observed: 2.52 ft at 3:42PM May 22, 2013Observed: 2.66 ft at 3:48PM May 22, 2013Observed: 2.75 ft at 3:54PM May 22, 2013Observed: 2.84 ft at 4:00PM May 22, 2013Observed: 2.95 ft at 4:06PM May 22, 2013Observed: 3.04 ft at 4:12PM May 22, 2013Observed: 3.12 ft at 4:18PM May 22, 2013Observed: 3.22 ft at 4:24PM May 22, 2013Observed: 3.31 ft at 4:30PM May 22, 2013Observed: 3.37 ft at 4:36PM May 22, 2013Observed: 3.43 ft at 4:42PM May 22, 2013Observed: 3.51 ft at 4:48PM May 22, 2013Observed: 3.58 ft at 4:54PM May 22, 2013Observed: 3.63 ft at 5:00PM May 22, 2013Observed: 3.71 ft at 5:06PM May 22, 2013Observed: 3.74 ft at 5:12PM May 22, 2013Observed: 3.8 ft at 5:18PM May 22, 2013Observed: 3.83 ft at 5:24PM May 22, 2013Observed: 3.87 ft at 5:30PM May 22, 2013Observed: 3.93 ft at 5:36PM May 22, 2013Observed: 3.99 ft at 5:42PM May 22, 2013Observed: 4 ft at 5:48PM May 22, 2013Observed: 4.03 ft at 5:54PM May 22, 2013Observed: 4.06 ft at 6:00PM May 22, 2013Observed: 4.1 ft at 6:06PM May 22, 2013Observed: 4.11 ft at 6:12PM May 22, 2013Observed: 4.13 ft at 6:18PM May 22, 2013Observed: 4.14 ft at 6:24PM May 22, 2013Observed: 4.16 ft at 6:30PM May 22, 2013Observed: 4.14 ft at 6:36PM May 22, 2013Observed: 4.15 ft at 6:42PM May 22, 2013Observed: 4.16 ft at 6:48PM May 22, 2013Observed: 4.15 ft at 6:54PM May 22, 2013Forecast: 3.71 ft 8:00PM May 22, 2013Forecast: 3.25 ft 9:00PM May 22, 2013Forecast: 2.62 ft 10:00PM May 22, 2013Forecast: 1.9 ft 11:00PM May 22, 2013Forecast: 1.41 ft 12:00AM May 23, 2013Forecast: 1.12 ft 1:00AM May 23, 2013Forecast: 1.12 ft 2:00AM May 23, 2013Forecast: 1.51 ft 3:00AM May 23, 2013Forecast: 2.46 ft 4:00AM May 23, 2013Forecast: 3.54 ft 5:00AM May 23, 2013Forecast: 4.27 ft 6:00AM May 23, 2013Highest Forecast: 4.56 ft 7:00AM May 23, 2013Forecast: 4.49 ft 8:00AM May 23, 2013Forecast: 4.1 ft 9:00AM May 23, 2013Forecast: 3.44 ft 10:00AM May 23, 2013Forecast: 2.62 ft 11:00AM May 23, 2013Forecast: 1.87 ft 12:00PM May 23, 2013Forecast: 1.38 ft 1:00PM May 23, 2013Forecast: 1.12 ft 2:00PM May 23, 2013Forecast: 1.12 ft 3:00PM May 23, 2013Forecast: 1.57 ft 4:00PM May 23, 2013Forecast: 2.53 ft 5:00PM May 23, 2013Forecast: 3.58 ft 6:00PM May 23, 2013Forecast: 4.17 ft 7:00PM May 23, 2013Forecast: 4.27 ft 8:00PM May 23, 2013Forecast: 3.97 ft 9:00PM May 23, 2013Forecast: 3.41 ft 10:00PM May 23, 2013Forecast: 2.66 ft 11:00PM May 23, 2013Forecast: 1.94 ft 12:00AM May 24, 2013Forecast: 1.44 ft 1:00AM May 24, 2013Forecast: 1.12 ft 2:00AM May 24, 2013Forecast: 1.05 ft 3:00AM May 24, 2013Forecast: 1.44 ft 4:00AM May 24, 2013Forecast: 2.43 ft 5:00AM May 24, 2013Forecast: 3.44 ft 6:00AM May 24, 2013Forecast: 4.04 ft 7:00AM May 24, 2013Forecast: 4.2 ft 8:00AM May 24, 2013Forecast: 4 ft 9:00AM May 24, 2013Forecast: 3.44 ft 10:00AM May 24, 2013Forecast: 2.62 ft 11:00AM May 24, 2013Forecast: 1.67 ft 12:00PM May 24, 2013Forecast: 0.85 ft 1:00PM May 24, 2013Forecast: 0.3 ft 2:00PM May 24, 2013Forecast: -0.07 ft 3:00PM May 24, 2013Forecast: -0.13 ft 4:00PM May 24, 2013Forecast: 0.33 ft 5:00PM May 24, 2013Forecast: 1.35 ft 6:00PM May 24, 2013Forecast: 2.36 ft 7:00PM May 24, 2013Forecast: 2.92 ft 8:00PM May 24, 2013Forecast: 2.95 ft 9:00PM May 24, 2013Forecast: 2.66 ft 10:00PM May 24, 2013Forecast: 2.76 ft 11:00PM May 24, 2013Forecast: 2 ft 12:00AM May 25, 2013Forecast: 1.31 ft 1:00AM May 25, 2013Forecast: 0.82 ft 2:00AM May 25, 2013Forecast: 0.52 ft 3:00AM May 25, 2013Forecast: 0.49 ft 4:00AM May 25, 2013Forecast: 1.05 ft 5:00AM May 25, 2013Forecast: 2.13 ft 6:00AM May 25, 2013Forecast: 3.15 ft 7:00AM May 25, 2013Forecast: 3.77 ft 8:00AM May 25, 2013USGS--Water Resources of the United StatesGTND2(plotting HMIRG) Graph Created (7:16PM May 22, 2013)ObservedForecast (issued 9:18AM May 22)Latest observed value: 4.15 ft at 6:54 PM EDT 22-May-2013. Flood Stage is 6 ft
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Tabular Data
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Datum: Not Available
Metadata
NOTE: Caution: This water level forecast does not fully account for the effects of wind driven storm surge. Forecast errors of two feet or more are possible during major surge events. Other sources of error may include rainfall forecast uncertainties and hydrologic/hydraulic model uncertainties.

NOTE: Gauge reading affected by tides.

NOTE: Forecasts for the Potomac River at Georgetown / Wisconsin Ave are issued routinely year-round.

Vertical Datum reference a local datum

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Upstream Gauge - near Washington DC (Little Falls) Upstream Gauge Downstream Gauge Downstream Gauge - at Alexandria
Flood Categories (in feet)
Major Flood Stage:10
Moderate Flood Stage:7
Flood Stage:6
Action Stage:5.5

Historical Crests
(1) 17.72 ft on 10/17/1942
(2) 17.30 ft on 03/19/1936
(3) 15.45 ft on 06/24/1972
(4) 14.30 ft on 04/28/1937
(5) 14.05 ft on 11/26/1877
Show More Historical Crests

Low Water Records
(1) -4.80 ft on 03/13/1889
(2) -2.90 ft on 02/15/1940
(3) -2.70 ft on 11/11/1936
(4) -2.26 ft on 12/06/1992
(5) -2.00 ft on 09/19/1936
Legend
Gauge Location
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
24.1 FLOODWATERS REACH CONSTITUTION AVENUE NEAR THE LINCOLN MEMORIAL AT THE LOW SPOT ON HENRY BACON DRIVE.
18 FLOODWATERS REACH THE TOP OF THE PROTECTION OF THE FLOODGATES AT WASHINGTON HARBOUR.
17 FLOODWATERS THREATEN THE BASEMENT OF THE JEFFERSON MEMORIAL.
16.7 FLOODWATERS REACH THE KENNEDY CENTER FOR PERFORMING ARTS AT ROCK CREEK AND POTOMAC PARKWAY.
13.5 MUCH OF WEST POTOMAC PARK IS FLOODED. FLOODWATERS REACH THE INTERSECTION OF WISCONSIN AVENUE AND K STREET IN GEORGETOWN.
12 FLOODWATERS REACH GEORGETOWN WATERFRONT PARK AT THE FOOT OF WISCONSIN AVENUE IN GEORGETOWN.
11 THE RIVER REACHES A HEIGHT IN WHICH USUAL HIGH AND LOW TIDES ARE NO LONGER OBSERVED. FROM THIS POINT THE RIVER WILL RISE UNTIL CREST AND THEN FALL.
10.5 FLOODWATERS REACH THE FOOT OF 17TH STREET AT INDEPENDENCE AVENUE.
10 FLOODWATERS APPROACH K STREET IN GEORGETOWN NEAR WASHINGTON HARBOUR.
8 BACKWATER FLOODING OF ROCK CREEK IN GEORGETOWN BEGINS AT THIS LEVEL.
7.5 WASHINGTON HARBOUR WILL BEGIN TO FLOOD IF FLOODGATES ARE NOT IN PLACE.
7 WATER BEGINS TO COVER THE BOARDWALK AT WASHINGTON HARBOUR. DOWNSTREAM...WATER IS OUT OF THE BANKS IN A FEW LOW SPOTS BETWEEN THE MOUTH OF ROCK CREEK AND THE 14TH STREET BRIDGE.
6.5 DURING SOME EVENTS...WATER MAY BEGIN TO BUBBLE UP THROUGH STORM DRAINS NEAR WASHINGTON HARBOUR.
6 WATER BEGINS TO OVERFLOW THE BANKS NEAR THE MOUTH OF ROCK CREEK.
Photos
(1) 1) An Icy Potomac 1 Mile Below Gage in Early 1961. Memorial Bridge and Lincoln Memorial.
About This Location Collapse

Latitude: 38.902222° N, Longitude: 77.063056° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 6 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 -1.25 ft 4.75 ft Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 -1.41 ft 4.59 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Other Data Sources:
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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
(Baltimore/Washington) Sterling Weather Forecast Office
43858 Weather Service Rd.
Sterling, VA 20166
(703) 996-2200
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