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Hydrograph River at a Glance Download
Potomac River at Point of Rocks Stage (ft)Flow (kcfs)Observed: 2.68 ft at 12:15PM Dec 16, 2014Observed: 2.69 ft at 12:30PM Dec 16, 2014Highest Observation: 2.7 ft at 12:45PM Dec 16, 2014Highest Observation: 2.7 ft at 1:00PM Dec 16, 2014Highest Observation: 2.7 ft at 1:15PM Dec 16, 2014Highest Observation: 2.7 ft at 1:30PM Dec 16, 2014Highest Observation: 2.7 ft at 1:45PM Dec 16, 2014Highest Observation: 2.7 ft at 2:00PM Dec 16, 2014Highest Observation: 2.7 ft at 2:15PM Dec 16, 2014Observed: 2.69 ft at 2:30PM Dec 16, 2014Observed: 2.69 ft at 2:45PM Dec 16, 2014Observed: 2.68 ft at 3:00PM Dec 16, 2014Observed: 2.68 ft at 3:15PM Dec 16, 2014Observed: 2.68 ft at 3:30PM Dec 16, 2014Observed: 2.67 ft at 3:45PM Dec 16, 2014Observed: 2.67 ft at 4:00PM Dec 16, 2014Observed: 2.66 ft at 4:15PM Dec 16, 2014Observed: 2.66 ft at 4:30PM Dec 16, 2014Observed: 2.66 ft at 4:45PM Dec 16, 2014Observed: 2.66 ft at 5:00PM Dec 16, 2014Observed: 2.66 ft at 5:15PM Dec 16, 2014Observed: 2.66 ft at 5:30PM Dec 16, 2014Observed: 2.66 ft at 5:45PM Dec 16, 2014Observed: 2.66 ft at 6:00PM Dec 16, 2014Observed: 2.66 ft at 6:15PM Dec 16, 2014Observed: 2.67 ft at 6:30PM Dec 16, 2014Observed: 2.67 ft at 6:45PM Dec 16, 2014Observed: 2.67 ft at 7:00PM Dec 16, 2014Observed: 2.67 ft at 7:15PM Dec 16, 2014Observed: 2.67 ft at 7:30PM Dec 16, 2014Observed: 2.68 ft at 7:45PM Dec 16, 2014Observed: 2.68 ft at 8:00PM Dec 16, 2014Observed: 2.68 ft at 8:15PM Dec 16, 2014Observed: 2.68 ft at 8:30PM Dec 16, 2014Observed: 2.68 ft at 8:45PM Dec 16, 2014Observed: 2.68 ft at 9:00PM Dec 16, 2014Observed: 2.68 ft at 9:15PM Dec 16, 2014Observed: 2.67 ft at 9:30PM Dec 16, 2014Observed: 2.67 ft at 9:45PM Dec 16, 2014Observed: 2.67 ft at 10:00PM Dec 16, 2014Observed: 2.67 ft at 10:15PM Dec 16, 2014Observed: 2.66 ft at 10:30PM Dec 16, 2014Observed: 2.66 ft at 10:45PM Dec 16, 2014Observed: 2.66 ft at 11:00PM Dec 16, 2014Observed: 2.65 ft at 11:15PM Dec 16, 2014Observed: 2.65 ft at 11:30PM Dec 16, 2014Observed: 2.64 ft at 11:45PM Dec 16, 2014Observed: 2.64 ft at 12:00AM Dec 17, 2014Observed: 2.64 ft at 12:15AM Dec 17, 2014Observed: 2.63 ft at 12:30AM Dec 17, 2014Observed: 2.63 ft at 12:45AM Dec 17, 2014Observed: 2.63 ft at 1:00AM Dec 17, 2014Observed: 2.63 ft at 1:15AM Dec 17, 2014Observed: 2.62 ft at 1:30AM Dec 17, 2014Observed: 2.62 ft at 1:45AM Dec 17, 2014Observed: 2.62 ft at 2:00AM Dec 17, 2014Observed: 2.62 ft at 2:15AM Dec 17, 2014Observed: 2.61 ft at 2:30AM Dec 17, 2014Observed: 2.61 ft at 2:45AM Dec 17, 2014Observed: 2.61 ft at 3:00AM Dec 17, 2014Observed: 2.61 ft at 3:15AM Dec 17, 2014Observed: 2.6 ft at 3:30AM Dec 17, 2014Observed: 2.6 ft at 3:45AM Dec 17, 2014Observed: 2.6 ft at 4:00AM Dec 17, 2014Observed: 2.6 ft at 4:15AM Dec 17, 2014Observed: 2.6 ft at 4:30AM Dec 17, 2014Observed: 2.59 ft at 4:45AM Dec 17, 2014Observed: 2.59 ft at 5:00AM Dec 17, 2014Observed: 2.59 ft at 5:15AM Dec 17, 2014Observed: 2.59 ft at 5:30AM Dec 17, 2014Observed: 2.59 ft at 5:45AM Dec 17, 2014Observed: 2.59 ft at 6:00AM Dec 17, 2014Observed: 2.59 ft at 6:15AM Dec 17, 2014Observed: 2.59 ft at 6:30AM Dec 17, 2014Observed: 2.59 ft at 6:45AM Dec 17, 2014Observed: 2.59 ft at 7:00AM Dec 17, 2014Observed: 2.59 ft at 7:15AM Dec 17, 2014Observed: 2.59 ft at 7:30AM Dec 17, 2014Observed: 2.59 ft at 7:45AM Dec 17, 2014Observed: 2.59 ft at 8:00AM Dec 17, 2014Observed: 2.59 ft at 8:15AM Dec 17, 2014Observed: 2.6 ft at 8:30AM Dec 17, 2014Observed: 2.6 ft at 8:45AM Dec 17, 2014Observed: 2.6 ft at 9:00AM Dec 17, 2014Observed: 2.6 ft at 9:15AM Dec 17, 2014Observed: 2.6 ft at 9:30AM Dec 17, 2014Observed: 2.6 ft at 9:45AM Dec 17, 2014Observed: 2.6 ft at 10:00AM Dec 17, 2014Observed: 2.6 ft at 10:15AM Dec 17, 2014Observed: 2.6 ft at 10:30AM Dec 17, 2014Observed: 2.6 ft at 10:45AM Dec 17, 2014Observed: 2.6 ft at 11:00AM Dec 17, 2014Observed: 2.6 ft at 11:15AM Dec 17, 2014Observed: 2.61 ft at 11:30AM Dec 17, 2014Observed: 2.6 ft at 11:45AM Dec 17, 2014Observed: 2.61 ft at 12:00PM Dec 17, 2014Observed: 2.61 ft at 12:15PM Dec 17, 2014Observed: 2.61 ft at 12:30PM Dec 17, 2014Observed: 2.61 ft at 12:45PM Dec 17, 2014Observed: 2.62 ft at 1:00PM Dec 17, 2014Observed: 2.62 ft at 1:15PM Dec 17, 2014Observed: 2.62 ft at 1:30PM Dec 17, 2014Observed: 2.62 ft at 1:45PM Dec 17, 2014Observed: 2.62 ft at 2:00PM Dec 17, 2014Observed: 2.62 ft at 2:15PM Dec 17, 2014Observed: 2.62 ft at 2:30PM Dec 17, 2014Observed: 2.62 ft at 2:45PM Dec 17, 2014Observed: 2.62 ft at 3:00PM Dec 17, 2014Observed: 2.62 ft at 3:15PM Dec 17, 2014Observed: 2.62 ft at 3:30PM Dec 17, 2014Observed: 2.62 ft at 3:45PM Dec 17, 2014Observed: 2.62 ft at 4:00PM Dec 17, 2014Observed: 2.61 ft at 4:15PM Dec 17, 2014Observed: 2.61 ft at 4:30PM Dec 17, 2014Observed: 2.6 ft at 4:45PM Dec 17, 2014Observed: 2.6 ft at 5:00PM Dec 17, 2014Observed: 2.6 ft at 5:15PM Dec 17, 2014Observed: 2.6 ft at 5:30PM Dec 17, 2014Observed: 2.59 ft at 5:45PM Dec 17, 2014Observed: 2.59 ft at 6:00PM Dec 17, 2014Observed: 2.59 ft at 6:15PM Dec 17, 2014Observed: 2.58 ft at 6:30PM Dec 17, 2014Observed: 2.58 ft at 6:45PM Dec 17, 2014Observed: 2.58 ft at 7:00PM Dec 17, 2014Observed: 2.57 ft at 7:15PM Dec 17, 2014Observed: 2.57 ft at 7:30PM Dec 17, 2014Observed: 2.56 ft at 7:45PM Dec 17, 2014Observed: 2.56 ft at 8:00PM Dec 17, 2014Observed: 2.55 ft at 8:15PM Dec 17, 2014Observed: 2.55 ft at 8:30PM Dec 17, 2014Observed: 2.54 ft at 8:45PM Dec 17, 2014Observed: 2.54 ft at 9:00PM Dec 17, 2014Observed: 2.54 ft at 9:15PM Dec 17, 2014Observed: 2.53 ft at 9:30PM Dec 17, 2014Observed: 2.53 ft at 9:45PM Dec 17, 2014Observed: 2.52 ft at 10:00PM Dec 17, 2014Observed: 2.52 ft at 10:15PM Dec 17, 2014Observed: 2.52 ft at 10:30PM Dec 17, 2014Observed: 2.52 ft at 10:45PM Dec 17, 2014Observed: 2.52 ft at 11:00PM Dec 17, 2014Observed: 2.51 ft at 11:15PM Dec 17, 2014Observed: 2.51 ft at 11:30PM Dec 17, 2014Observed: 2.51 ft at 11:45PM Dec 17, 2014Observed: 2.5 ft at 12:00AM Dec 18, 2014Observed: 2.5 ft at 12:15AM Dec 18, 2014Observed: 2.5 ft at 12:30AM Dec 18, 2014Observed: 2.5 ft at 12:45AM Dec 18, 2014Observed: 2.5 ft at 1:00AM Dec 18, 2014Observed: 2.5 ft at 1:15AM Dec 18, 2014Observed: 2.5 ft at 1:30AM Dec 18, 2014Observed: 2.5 ft at 1:45AM Dec 18, 2014Observed: 2.49 ft at 2:00AM Dec 18, 2014Observed: 2.49 ft at 2:15AM Dec 18, 2014Observed: 2.49 ft at 2:30AM Dec 18, 2014Observed: 2.49 ft at 2:45AM Dec 18, 2014Observed: 2.48 ft at 3:00AM Dec 18, 2014Observed: 2.48 ft at 3:15AM Dec 18, 2014Observed: 2.48 ft at 3:30AM Dec 18, 2014Observed: 2.48 ft at 3:45AM Dec 18, 2014Observed: 2.48 ft at 4:00AM Dec 18, 2014Observed: 2.47 ft at 4:15AM Dec 18, 2014Observed: 2.47 ft at 4:30AM Dec 18, 2014Observed: 2.47 ft at 4:45AM Dec 18, 2014Observed: 2.46 ft at 5:00AM Dec 18, 2014Observed: 2.46 ft at 5:15AM Dec 18, 2014Observed: 2.46 ft at 5:30AM Dec 18, 2014Observed: 2.46 ft at 5:45AM Dec 18, 2014Observed: 2.45 ft at 6:00AM Dec 18, 2014Observed: 2.45 ft at 6:15AM Dec 18, 2014Observed: 2.45 ft at 6:30AM Dec 18, 2014Observed: 2.45 ft at 6:45AM Dec 18, 2014Observed: 2.45 ft at 7:00AM Dec 18, 2014Observed: 2.44 ft at 7:15AM Dec 18, 2014Observed: 2.44 ft at 7:30AM Dec 18, 2014Observed: 2.44 ft at 7:45AM Dec 18, 2014Observed: 2.44 ft at 8:00AM Dec 18, 2014Observed: 2.44 ft at 8:15AM Dec 18, 2014Observed: 2.43 ft at 8:30AM Dec 18, 2014Observed: 2.43 ft at 8:45AM Dec 18, 2014Observed: 2.43 ft at 9:00AM Dec 18, 2014Observed: 2.43 ft at 9:15AM Dec 18, 2014Observed: 2.42 ft at 9:30AM Dec 18, 2014Observed: 2.42 ft at 9:45AM Dec 18, 2014Observed: 2.42 ft at 10:00AM Dec 18, 2014Observed: 2.42 ft at 10:15AM Dec 18, 2014Observed: 2.42 ft at 10:30AM Dec 18, 2014Observed: 2.41 ft at 10:45AM Dec 18, 2014Observed: 2.4 ft at 11:00AM Dec 18, 2014Observed: 2.4 ft at 11:15AM Dec 18, 2014Observed: 2.4 ft at 11:30AM Dec 18, 2014Observed: 2.4 ft at 11:45AM Dec 18, 2014Observed: 2.39 ft at 12:00PM Dec 18, 2014Observed: 2.39 ft at 12:15PM Dec 18, 2014Observed: 2.39 ft at 12:30PM Dec 18, 2014Observed: 2.38 ft at 12:45PM Dec 18, 2014Observed: 2.38 ft at 1:00PM Dec 18, 2014Observed: 2.38 ft at 1:15PM Dec 18, 2014Observed: 2.38 ft at 1:30PM Dec 18, 2014Observed: 2.38 ft at 1:45PM Dec 18, 2014Observed: 2.37 ft at 2:00PM Dec 18, 2014Observed: 2.37 ft at 2:15PM Dec 18, 2014Observed: 2.36 ft at 2:30PM Dec 18, 2014Observed: 2.36 ft at 2:45PM Dec 18, 2014Observed: 2.36 ft at 3:00PM Dec 18, 2014Observed: 2.35 ft at 3:15PM Dec 18, 2014Observed: 2.35 ft at 3:30PM Dec 18, 2014Observed: 2.35 ft at 3:45PM Dec 18, 2014Observed: 2.34 ft at 4:00PM Dec 18, 2014Observed: 2.34 ft at 4:15PM Dec 18, 2014Observed: 2.34 ft at 4:30PM Dec 18, 2014Observed: 2.34 ft at 4:45PM Dec 18, 2014Observed: 2.34 ft at 5:00PM Dec 18, 2014Observed: 2.34 ft at 5:15PM Dec 18, 2014Observed: 2.33 ft at 5:30PM Dec 18, 2014Observed: 2.33 ft at 5:45PM Dec 18, 2014Observed: 2.33 ft at 6:00PM Dec 18, 2014Observed: 2.33 ft at 6:15PM Dec 18, 2014Observed: 2.32 ft at 6:30PM Dec 18, 2014Observed: 2.32 ft at 6:45PM Dec 18, 2014Observed: 2.31 ft at 7:00PM Dec 18, 2014Observed: 2.31 ft at 7:15PM Dec 18, 2014Observed: 2.31 ft at 7:30PM Dec 18, 2014Observed: 2.31 ft at 7:45PM Dec 18, 2014Observed: 2.3 ft at 8:00PM Dec 18, 2014Observed: 2.3 ft at 8:15PM Dec 18, 2014Observed: 2.3 ft at 8:30PM Dec 18, 2014Observed: 2.3 ft at 8:45PM Dec 18, 2014Observed: 2.29 ft at 9:00PM Dec 18, 2014Observed: 2.29 ft at 9:15PM Dec 18, 2014Observed: 2.29 ft at 9:30PM Dec 18, 2014Observed: 2.29 ft at 9:45PM Dec 18, 2014Observed: 2.28 ft at 10:00PM Dec 18, 2014Observed: 2.28 ft at 10:15PM Dec 18, 2014Observed: 2.28 ft at 10:30PM Dec 18, 2014Observed: 2.27 ft at 10:45PM Dec 18, 2014Observed: 2.27 ft at 11:00PM Dec 18, 2014Observed: 2.27 ft at 11:15PM Dec 18, 2014Observed: 2.26 ft at 11:30PM Dec 18, 2014Observed: 2.26 ft at 11:45PM Dec 18, 2014Observed: 2.26 ft at 12:00AM Dec 19, 2014Observed: 2.26 ft at 12:15AM Dec 19, 2014Observed: 2.26 ft at 12:30AM Dec 19, 2014Observed: 2.26 ft at 12:45AM Dec 19, 2014Observed: 2.26 ft at 1:00AM Dec 19, 2014Observed: 2.26 ft at 1:15AM Dec 19, 2014Observed: 2.26 ft at 1:30AM Dec 19, 2014Observed: 2.26 ft at 1:45AM Dec 19, 2014Observed: 2.26 ft at 2:00AM Dec 19, 2014Observed: 2.26 ft at 2:15AM Dec 19, 2014Observed: 2.26 ft at 2:30AM Dec 19, 2014Observed: 2.26 ft at 2:45AM Dec 19, 2014Observed: 2.26 ft at 3:00AM Dec 19, 2014Observed: 2.26 ft at 3:15AM Dec 19, 2014Observed: 2.27 ft at 3:30AM Dec 19, 2014Observed: 2.27 ft at 3:45AM Dec 19, 2014Observed: 2.27 ft at 4:00AM Dec 19, 2014Observed: 2.27 ft at 4:15AM Dec 19, 2014Observed: 2.27 ft at 4:30AM Dec 19, 2014Observed: 2.27 ft at 4:45AM Dec 19, 2014Observed: 2.27 ft at 5:00AM Dec 19, 2014Observed: 2.27 ft at 5:15AM Dec 19, 2014Observed: 2.27 ft at 5:30AM Dec 19, 2014Observed: 2.27 ft at 5:45AM Dec 19, 2014Observed: 2.27 ft at 6:00AM Dec 19, 2014Observed: 2.27 ft at 6:15AM Dec 19, 2014Observed: 2.26 ft at 6:30AM Dec 19, 2014Observed: 2.26 ft at 6:45AM Dec 19, 2014Observed: 2.26 ft at 7:00AM Dec 19, 2014Observed: 2.26 ft at 7:15AM Dec 19, 2014Observed: 2.26 ft at 7:30AM Dec 19, 2014Observed: 2.26 ft at 7:45AM Dec 19, 2014Observed: 2.26 ft at 8:00AM Dec 19, 2014Observed: 2.26 ft at 8:15AM Dec 19, 2014Observed: 2.26 ft at 8:30AM Dec 19, 2014Observed: 2.26 ft at 8:45AM Dec 19, 2014Observed: 2.26 ft at 9:00AM Dec 19, 2014Observed: 2.26 ft at 9:15AM Dec 19, 2014Observed: 2.26 ft at 9:30AM Dec 19, 2014Observed: 2.26 ft at 9:45AM Dec 19, 2014Observed: 2.26 ft at 10:00AM Dec 19, 2014Observed: 2.25 ft at 10:15AM Dec 19, 2014Observed: 2.26 ft at 10:30AM Dec 19, 2014Observed: 2.25 ft at 10:45AM Dec 19, 2014Observed: 2.25 ft at 11:00AM Dec 19, 2014Observed: 2.25 ft at 11:15AM Dec 19, 2014Observed: 2.25 ft at 11:30AM Dec 19, 2014Observed: 2.25 ft at 11:45AM Dec 19, 2014Observed: 2.25 ft at 12:00PM Dec 19, 2014Observed: 2.25 ft at 12:15PM Dec 19, 2014Observed: 2.25 ft at 12:30PM Dec 19, 2014Observed: 2.24 ft at 12:45PM Dec 19, 2014Observed: 2.24 ft at 1:00PM Dec 19, 2014Observed: 2.24 ft at 1:15PM Dec 19, 2014Observed: 2.24 ft at 1:30PM Dec 19, 2014Observed: 2.24 ft at 1:45PM Dec 19, 2014Observed: 2.23 ft at 2:00PM Dec 19, 2014Observed: 2.23 ft at 2:15PM Dec 19, 2014Observed: 2.23 ft at 2:30PM Dec 19, 2014Observed: 2.23 ft at 2:45PM Dec 19, 2014Observed: 2.23 ft at 3:00PM Dec 19, 2014Observed: 2.23 ft at 3:15PM Dec 19, 2014Observed: 2.23 ft at 3:30PM Dec 19, 2014Observed: 2.22 ft at 3:45PM Dec 19, 2014Observed: 2.22 ft at 4:00PM Dec 19, 2014Observed: 2.22 ft at 4:15PM Dec 19, 2014Observed: 2.22 ft at 4:30PM Dec 19, 2014Observed: 2.22 ft at 4:45PM Dec 19, 2014Observed: 2.22 ft at 5:00PM Dec 19, 2014Observed: 2.22 ft at 5:15PM Dec 19, 2014Observed: 2.22 ft at 5:30PM Dec 19, 2014Observed: 2.22 ft at 5:45PM Dec 19, 2014Observed: 2.22 ft at 6:00PM Dec 19, 2014Observed: 2.22 ft at 6:15PM Dec 19, 2014Observed: 2.21 ft at 6:30PM Dec 19, 2014Observed: 2.21 ft at 6:45PM Dec 19, 2014Observed: 2.21 ft at 7:00PM Dec 19, 2014Observed: 2.21 ft at 7:15PM Dec 19, 2014Observed: 2.2 ft at 7:30PM Dec 19, 2014Observed: 2.2 ft at 7:45PM Dec 19, 2014Observed: 2.2 ft at 8:00PM Dec 19, 2014Observed: 2.2 ft at 8:15PM Dec 19, 2014Observed: 2.19 ft at 8:30PM Dec 19, 2014Observed: 2.19 ft at 8:45PM Dec 19, 2014Observed: 2.19 ft at 9:00PM Dec 19, 2014Observed: 2.18 ft at 9:15PM Dec 19, 2014Observed: 2.18 ft at 9:30PM Dec 19, 2014Observed: 2.18 ft at 9:45PM Dec 19, 2014Observed: 2.18 ft at 10:00PM Dec 19, 2014Observed: 2.18 ft at 10:15PM Dec 19, 2014Observed: 2.18 ft at 10:30PM Dec 19, 2014Observed: 2.18 ft at 10:45PM Dec 19, 2014Observed: 2.18 ft at 11:00PM Dec 19, 2014Observed: 2.18 ft at 11:15PM Dec 19, 2014Observed: 2.18 ft at 11:30PM Dec 19, 2014Observed: 2.18 ft at 11:45PM Dec 19, 2014Observed: 2.18 ft at 12:00AM Dec 20, 2014Observed: 2.18 ft at 12:15AM Dec 20, 2014Observed: 2.18 ft at 12:30AM Dec 20, 2014Observed: 2.18 ft at 12:45AM Dec 20, 2014Observed: 2.18 ft at 1:00AM Dec 20, 2014Observed: 2.18 ft at 1:15AM Dec 20, 2014Observed: 2.18 ft at 1:30AM Dec 20, 2014Observed: 2.18 ft at 1:45AM Dec 20, 2014Observed: 2.18 ft at 2:00AM Dec 20, 2014Observed: 2.18 ft at 2:15AM Dec 20, 2014Observed: 2.18 ft at 2:30AM Dec 20, 2014Observed: 2.18 ft at 2:45AM Dec 20, 2014Observed: 2.18 ft at 3:00AM Dec 20, 2014Observed: 2.18 ft at 3:15AM Dec 20, 2014Observed: 2.18 ft at 3:30AM Dec 20, 2014Observed: 2.18 ft at 3:45AM Dec 20, 2014Observed: 2.18 ft at 4:00AM Dec 20, 2014Observed: 2.18 ft at 4:15AM Dec 20, 2014Observed: 2.18 ft at 4:30AM Dec 20, 2014Observed: 2.18 ft at 4:45AM Dec 20, 2014Observed: 2.19 ft at 5:00AM Dec 20, 2014Observed: 2.19 ft at 5:15AM Dec 20, 2014Observed: 2.19 ft at 5:30AM Dec 20, 2014Observed: 2.19 ft at 5:45AM Dec 20, 2014Observed: 2.19 ft at 6:00AM Dec 20, 2014Observed: 2.19 ft at 6:15AM Dec 20, 2014Observed: 2.19 ft at 6:30AM Dec 20, 2014Observed: 2.19 ft at 6:45AM Dec 20, 2014Observed: 2.19 ft at 7:00AM Dec 20, 2014Observed: 2.19 ft at 7:15AM Dec 20, 2014Observed: 2.19 ft at 7:30AM Dec 20, 2014Observed: 2.19 ft at 7:45AM Dec 20, 2014Observed: 2.19 ft at 8:00AM Dec 20, 2014Observed: 2.19 ft at 8:15AM Dec 20, 2014Observed: 2.19 ft at 8:30AM Dec 20, 2014Observed: 2.19 ft at 8:45AM Dec 20, 2014Observed: 2.19 ft at 9:00AM Dec 20, 2014Observed: 2.19 ft at 9:15AM Dec 20, 2014Observed: 2.19 ft at 9:30AM Dec 20, 2014Observed: 2.19 ft at 9:45AM Dec 20, 2014Observed: 2.19 ft at 10:00AM Dec 20, 2014Observed: 2.19 ft at 10:15AM Dec 20, 2014Observed: 2.19 ft at 10:30AM Dec 20, 2014Observed: 2.19 ft at 10:45AM Dec 20, 2014Observed: 2.19 ft at 11:00AM Dec 20, 2014Observed: 2.19 ft at 11:15AM Dec 20, 2014Observed: 2.19 ft at 11:30AM Dec 20, 2014Observed: 2.19 ft at 11:45AM Dec 20, 2014Observed: 2.19 ft at 12:00PM Dec 20, 2014Observed: 2.19 ft at 12:15PM Dec 20, 2014Observed: 2.19 ft at 12:30PM Dec 20, 2014Observed: 2.19 ft at 12:45PM Dec 20, 2014Observed: 2.2 ft at 1:00PM Dec 20, 2014Observed: 2.2 ft at 1:15PM Dec 20, 2014Observed: 2.2 ft at 1:30PM Dec 20, 2014Observed: 2.2 ft at 1:45PM Dec 20, 2014Observed: 2.2 ft at 2:00PM Dec 20, 2014Observed: 2.2 ft at 2:15PM Dec 20, 2014Observed: 2.2 ft at 2:30PM Dec 20, 2014Observed: 2.2 ft at 2:45PM Dec 20, 2014Observed: 2.2 ft at 3:00PM Dec 20, 2014Observed: 2.2 ft at 3:15PM Dec 20, 2014Observed: 2.2 ft at 3:30PM Dec 20, 2014Observed: 2.2 ft at 3:45PM Dec 20, 2014Observed: 2.2 ft at 4:00PM Dec 20, 2014Observed: 2.2 ft at 4:15PM Dec 20, 2014Observed: 2.2 ft at 4:30PM Dec 20, 2014Observed: 2.19 ft at 4:45PM Dec 20, 2014Observed: 2.19 ft at 5:00PM Dec 20, 2014Observed: 2.19 ft at 5:15PM Dec 20, 2014Observed: 2.19 ft at 5:30PM Dec 20, 2014Observed: 2.19 ft at 5:45PM Dec 20, 2014Observed: 2.19 ft at 6:00PM Dec 20, 2014Observed: 2.18 ft at 6:15PM Dec 20, 2014Observed: 2.18 ft at 6:30PM Dec 20, 2014Observed: 2.18 ft at 6:45PM Dec 20, 2014Observed: 2.17 ft at 7:00PM Dec 20, 2014Observed: 2.17 ft at 7:15PM Dec 20, 2014Observed: 2.16 ft at 7:30PM Dec 20, 2014Observed: 2.16 ft at 7:45PM Dec 20, 2014Observed: 2.15 ft at 8:00PM Dec 20, 2014Observed: 2.14 ft at 8:15PM Dec 20, 2014Observed: 2.14 ft at 8:30PM Dec 20, 2014Observed: 2.13 ft at 8:45PM Dec 20, 2014Observed: 2.13 ft at 9:00PM Dec 20, 2014Observed: 2.12 ft at 9:15PM Dec 20, 2014Observed: 2.12 ft at 9:30PM Dec 20, 2014Observed: 2.11 ft at 9:45PM Dec 20, 2014Observed: 2.11 ft at 10:00PM Dec 20, 2014Observed: 2.1 ft at 10:15PM Dec 20, 2014Observed: 2.1 ft at 10:30PM Dec 20, 2014Observed: 2.1 ft at 10:45PM Dec 20, 2014Observed: 2.09 ft at 11:00PM Dec 20, 2014Observed: 2.09 ft at 11:15PM Dec 20, 2014Observed: 2.09 ft at 11:30PM Dec 20, 2014Observed: 2.09 ft at 11:45PM Dec 20, 2014Observed: 2.08 ft at 12:00AM Dec 21, 2014Observed: 2.08 ft at 12:15AM Dec 21, 2014Observed: 2.08 ft at 12:30AM Dec 21, 2014Observed: 2.08 ft at 12:45AM Dec 21, 2014Observed: 2.08 ft at 1:00AM Dec 21, 2014Observed: 2.08 ft at 1:15AM Dec 21, 2014Observed: 2.08 ft at 1:30AM Dec 21, 2014Observed: 2.08 ft at 1:45AM Dec 21, 2014Observed: 2.08 ft at 2:00AM Dec 21, 2014Observed: 2.08 ft at 2:15AM Dec 21, 2014Observed: 2.09 ft at 2:30AM Dec 21, 2014Observed: 2.09 ft at 2:45AM Dec 21, 2014Observed: 2.09 ft at 3:00AM Dec 21, 2014Observed: 2.09 ft at 3:15AM Dec 21, 2014Observed: 2.09 ft at 3:30AM Dec 21, 2014Observed: 2.09 ft at 3:45AM Dec 21, 2014Observed: 2.09 ft at 4:00AM Dec 21, 2014Observed: 2.09 ft at 4:15AM Dec 21, 2014Observed: 2.1 ft at 4:30AM Dec 21, 2014Observed: 2.1 ft at 4:45AM Dec 21, 2014Observed: 2.1 ft at 5:00AM Dec 21, 2014Observed: 2.1 ft at 5:15AM Dec 21, 2014Observed: 2.1 ft at 5:30AM Dec 21, 2014Observed: 2.1 ft at 5:45AM Dec 21, 2014Observed: 2.11 ft at 6:00AM Dec 21, 2014Observed: 2.11 ft at 6:15AM Dec 21, 2014Observed: 2.11 ft at 6:30AM Dec 21, 2014Observed: 2.11 ft at 6:45AM Dec 21, 2014Observed: 2.11 ft at 7:00AM Dec 21, 2014Observed: 2.11 ft at 7:15AM Dec 21, 2014Observed: 2.11 ft at 7:30AM Dec 21, 2014Observed: 2.12 ft at 7:45AM Dec 21, 2014Observed: 2.12 ft at 8:00AM Dec 21, 2014Observed: 2.12 ft at 8:15AM Dec 21, 2014Observed: 2.12 ft at 8:30AM Dec 21, 2014Observed: 2.12 ft at 8:45AM Dec 21, 2014Observed: 2.12 ft at 9:00AM Dec 21, 2014Observed: 2.12 ft at 9:15AM Dec 21, 2014Observed: 2.12 ft at 9:30AM Dec 21, 2014Observed: 2.12 ft at 9:45AM Dec 21, 2014Observed: 2.12 ft at 10:00AM Dec 21, 2014Observed: 2.12 ft at 10:15AM Dec 21, 2014Observed: 2.12 ft at 10:30AM Dec 21, 2014Observed: 2.12 ft at 10:45AM Dec 21, 2014Highest Forecast: 2.1 ft 1:00PM Dec 21, 2014Highest Forecast: 2.1 ft 7:00PM Dec 21, 2014Highest Forecast: 2.1 ft 1:00AM Dec 22, 2014Highest Forecast: 2.1 ft 7:00AM Dec 22, 2014Highest Forecast: 2.1 ft 1:00PM Dec 22, 2014Forecast: 2 ft 7:00PM Dec 22, 2014Forecast: 2 ft 1:00AM Dec 23, 2014Forecast: 2 ft 7:00AM Dec 23, 2014Forecast: 2 ft 1:00PM Dec 23, 2014Forecast: 2 ft 7:00PM Dec 23, 2014Forecast: 2 ft 1:00AM Dec 24, 2014Forecast: 2 ft 7:00AM Dec 24, 2014USGS--Water Resources of the United StatesPORM2(plotting HGIRG) Graph Created (12:07PM Dec 21, 2014)ObservedForecast (issued 9:37AM Dec 21)Latest observed value: 2.12 ft at 10:45 AM EST 21-Dec-2014. Flood Stage is 16 ft
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Tabular Data (UTC)
Tabular Data (EST)
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Datum: Not Available
Metadata
NOTE: Gauge reading may be affected by ice.

NOTE: Forecasts for the Potomac River at Point of Rocks are issued routinely year-round.

Return to Area Map
Upstream Gauge - at Harpers Ferry Upstream Gauge Downstream Gauge Downstream Gauge - at Edwards Ferry
Flood Categories (in feet)
Major Flood Stage: 25
Moderate Flood Stage: 20
Flood Stage: 16
Action Stage: 15
Low Stage (in feet): 0

Historic Crests
(1) 41.03 ft on 03/19/1936
(2) 40.43 ft on 10/16/1942
(3) 40.20 ft on 06/02/1889
(4) 37.43 ft on 06/23/1972
(5) 36.34 ft on 01/21/1996
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(P): Preliminary values subject to further review.

Recent Crests
(1) 22.62 ft on 05/17/2014
(2) 18.19 ft on 10/31/2012
(3) 22.15 ft on 05/19/2011
(4) 22.52 ft on 04/18/2011
(5) 19.92 ft on 03/12/2011
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(P): Preliminary values subject to further review.

Low Water Records
(1) 0.30 ft on 09/11/1966

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

Zoom Level:14
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Gauge LocationGauge Map Marker
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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
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40 Water reaches the lowest portion of the city of Brunswick, above the railroad tracks.
35 The MARC station in Point of Rocks is flooded. At least two feet of water covers much of Maryland State Route 28 in the city. Water begins to enter homes and businesses in Point of Rocks along Route 28.
32 Water covers Maryland State Route 28 in Point of Rocks near the MARC station.
31 Water reaches the MARC parking lot at Brunswick.
30 Water reaches a home on the Loudoun County side of the river near Point of Rocks. Water also reaches the Brunswick train yard and covers portions of the MARC parking lot at Point of Rocks, and covers Old Commerce Street in Point of Rocks.
29 Water completely covers the comfort station at the Point of Rocks boat ramp.
27 Water covers a large section of the C&O Canal towpath in Frederick County, Maryland. Water also reaches the railroad tracks at Point of Rocks.
25 Water reaches outbuildings on the Loudoun County side of the river near Point of Rocks.
23 Floodwaters completely cover the comfort station at the Brunswick boat ramp, and reach the comfort station at the Point of Rocks boat ramp. The upper parking lot at the Point of Rocks boat ramp begins to flood.
22 Water begins to cover the C&O Canal towpath near Point of Rocks and Brunswick.
20 The boat ramp and lower parking lot at Point of Rocks are flooded. Water approaches the water treatment plant in Brunswick. Farmland behind the Tarara Vineyard is flooded.
18 Water approaches structures at the Brunswick campground.
17 Water enters the comfort station at the Brunswick boat ramp parking area.
16 The parking lots at both the McKimmey and Brunswick boat ramps begin to flood. Flooding of an agricultural field adjacent to the McKimmey boat ramp is occurring. About half the lower parking lot of the Point of Rocks boat ramp is also flooded.
15 Several lowland forested areas, mainly on islands, begin to flood.
14 Water completely covers the Nolands Ferry boat ramp and begins to flood the parking lot nearby.
13 Water begins to cover low lying areas within the Brunswick campground.
12.5 The Point of Rocks boat ramp is completely covered by water, and water begins to affect the lower parking lot nearby.
11 Water covers the parking lot of the Lander boat ramp. Campers and other recreational interests should begin to move away from the river.
5.5 The river reaches danger level for boaters, as defined by the State of Maryland. Conditions are extremely hazardous.
2 The river reaches caution level for boaters, as defined by the State of Maryland. Fast moving water and changing currents can be expected.
Photos
(1) USGS Wellhouse Adjacent to US Route 15 at Point of Rocks
(2) Staff Gage Being Installed in 1993 on US Route 15 Bridge Support Beam
(3) Looking Upstream at Paton Island from US 15 Bridge
(4) Railroad Tunnel Just Above Gage on Maryland Side of Potomac
About This Location Collapse

Latitude: 39.273611° N, Longitude: 77.543056° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 16 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 29 200.63 ft 216.63 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:

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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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Page last modified: 20-Nov-2014 2:55 AM
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