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Hydrograph River at a Glance Download
South Branch Potomac River near Petersburg Stage (ft)Flow (kcfs)Observed: 4.76 ft at 5:45PM Jan 12, 2021Observed: 4.76 ft at 6:00PM Jan 12, 2021Observed: 4.77 ft at 6:15PM Jan 12, 2021Observed: 4.77 ft at 6:30PM Jan 12, 2021Observed: 4.77 ft at 6:45PM Jan 12, 2021Observed: 4.77 ft at 7:00PM Jan 12, 2021Observed: 4.77 ft at 7:15PM Jan 12, 2021Observed: 4.77 ft at 7:30PM Jan 12, 2021Highest Observation: 4.78 ft at 7:45PM Jan 12, 2021Observed: 4.75 ft at 8:00PM Jan 12, 2021Observed: 4.76 ft at 8:15PM Jan 12, 2021Observed: 4.77 ft at 8:30PM Jan 12, 2021Observed: 4.77 ft at 8:45PM Jan 12, 2021Observed: 4.76 ft at 9:00PM Jan 12, 2021Observed: 4.76 ft at 9:15PM Jan 12, 2021Observed: 4.76 ft at 9:30PM Jan 12, 2021Observed: 4.76 ft at 9:45PM Jan 12, 2021Observed: 4.76 ft at 10:00PM Jan 12, 2021Observed: 4.76 ft at 10:15PM Jan 12, 2021Observed: 4.77 ft at 10:30PM Jan 12, 2021Observed: 4.76 ft at 10:45PM Jan 12, 2021Observed: 4.75 ft at 11:00PM Jan 12, 2021Observed: 4.75 ft at 11:15PM Jan 12, 2021Observed: 4.76 ft at 11:30PM Jan 12, 2021Observed: 4.75 ft at 11:45PM Jan 12, 2021Observed: 4.75 ft at 12:00AM Jan 13, 2021Observed: 4.75 ft at 12:15AM Jan 13, 2021Observed: 4.75 ft at 12:30AM Jan 13, 2021Observed: 4.75 ft at 12:45AM Jan 13, 2021Observed: 4.75 ft at 1:00AM Jan 13, 2021Observed: 4.74 ft at 1:15AM Jan 13, 2021Observed: 4.75 ft at 1:30AM Jan 13, 2021Observed: 4.74 ft at 1:45AM Jan 13, 2021Observed: 4.75 ft at 2:00AM Jan 13, 2021Observed: 4.74 ft at 2:15AM Jan 13, 2021Observed: 4.76 ft at 2:30AM Jan 13, 2021Observed: 4.75 ft at 2:45AM Jan 13, 2021Observed: 4.74 ft at 3:00AM Jan 13, 2021Observed: 4.73 ft at 3:15AM Jan 13, 2021Observed: 4.75 ft at 3:30AM Jan 13, 2021Observed: 4.75 ft at 3:45AM Jan 13, 2021Observed: 4.73 ft at 4:00AM Jan 13, 2021Observed: 4.75 ft at 4:15AM Jan 13, 2021Observed: 4.75 ft at 4:30AM Jan 13, 2021Observed: 4.74 ft at 4:45AM Jan 13, 2021Observed: 4.74 ft at 5:00AM Jan 13, 2021Observed: 4.74 ft at 5:15AM Jan 13, 2021Observed: 4.75 ft at 5:30AM Jan 13, 2021Observed: 4.73 ft at 5:45AM Jan 13, 2021Observed: 4.72 ft at 6:00AM Jan 13, 2021Observed: 4.74 ft at 6:15AM Jan 13, 2021Observed: 4.72 ft at 6:30AM Jan 13, 2021Observed: 4.74 ft at 6:45AM Jan 13, 2021Observed: 4.72 ft at 7:00AM Jan 13, 2021Observed: 4.72 ft at 7:15AM Jan 13, 2021Observed: 4.73 ft at 7:30AM Jan 13, 2021Observed: 4.73 ft at 7:45AM Jan 13, 2021Observed: 4.74 ft at 8:00AM Jan 13, 2021Observed: 4.74 ft at 8:15AM Jan 13, 2021Observed: 4.73 ft at 8:30AM Jan 13, 2021Observed: 4.74 ft at 8:45AM Jan 13, 2021Observed: 4.74 ft at 9:00AM Jan 13, 2021Observed: 4.74 ft at 9:15AM Jan 13, 2021Observed: 4.75 ft at 9:30AM Jan 13, 2021Observed: 4.74 ft at 9:45AM Jan 13, 2021Observed: 4.75 ft at 10:00AM Jan 13, 2021Observed: 4.74 ft at 10:15AM Jan 13, 2021Observed: 4.74 ft at 10:30AM Jan 13, 2021Observed: 4.74 ft at 10:45AM Jan 13, 2021Observed: 4.73 ft at 11:00AM Jan 13, 2021Observed: 4.74 ft at 11:15AM Jan 13, 2021Observed: 4.74 ft at 11:30AM Jan 13, 2021Observed: 4.75 ft at 11:45AM Jan 13, 2021Observed: 4.75 ft at 12:00PM Jan 13, 2021Observed: 4.74 ft at 12:15PM Jan 13, 2021Observed: 4.75 ft at 12:30PM Jan 13, 2021Observed: 4.73 ft at 12:45PM Jan 13, 2021Observed: 4.75 ft at 1:00PM Jan 13, 2021Observed: 4.74 ft at 1:15PM Jan 13, 2021Observed: 4.73 ft at 1:30PM Jan 13, 2021Observed: 4.73 ft at 1:45PM Jan 13, 2021Observed: 4.73 ft at 2:00PM Jan 13, 2021Observed: 4.74 ft at 2:15PM Jan 13, 2021Observed: 4.73 ft at 2:30PM Jan 13, 2021Observed: 4.74 ft at 2:45PM Jan 13, 2021Observed: 4.73 ft at 3:00PM Jan 13, 2021Observed: 4.73 ft at 3:15PM Jan 13, 2021Observed: 4.73 ft at 3:30PM Jan 13, 2021Observed: 4.74 ft at 3:45PM Jan 13, 2021Observed: 4.74 ft at 4:00PM Jan 13, 2021Observed: 4.72 ft at 4:15PM Jan 13, 2021Observed: 4.72 ft at 4:30PM Jan 13, 2021Observed: 4.72 ft at 4:45PM Jan 13, 2021Observed: 4.73 ft at 5:00PM Jan 13, 2021Observed: 4.73 ft at 5:15PM Jan 13, 2021Observed: 4.73 ft at 5:30PM Jan 13, 2021Observed: 4.72 ft at 5:45PM Jan 13, 2021Observed: 4.71 ft at 6:00PM Jan 13, 2021Observed: 4.72 ft at 6:15PM Jan 13, 2021Observed: 4.7 ft at 6:30PM Jan 13, 2021Observed: 4.72 ft at 6:45PM Jan 13, 2021Observed: 4.72 ft at 7:00PM Jan 13, 2021Observed: 4.71 ft at 7:15PM Jan 13, 2021Observed: 4.71 ft at 7:30PM Jan 13, 2021Observed: 4.72 ft at 7:45PM Jan 13, 2021Observed: 4.7 ft at 8:00PM Jan 13, 2021Observed: 4.7 ft at 8:15PM Jan 13, 2021Observed: 4.7 ft at 8:30PM Jan 13, 2021Observed: 4.72 ft at 8:45PM Jan 13, 2021Observed: 4.7 ft at 9:00PM Jan 13, 2021Observed: 4.71 ft at 9:15PM Jan 13, 2021Observed: 4.7 ft at 9:30PM Jan 13, 2021Observed: 4.7 ft at 9:45PM Jan 13, 2021Observed: 4.71 ft at 10:00PM Jan 13, 2021Observed: 4.69 ft at 10:15PM Jan 13, 2021Observed: 4.7 ft at 10:30PM Jan 13, 2021Observed: 4.69 ft at 10:45PM Jan 13, 2021Observed: 4.7 ft at 11:00PM Jan 13, 2021Observed: 4.69 ft at 11:15PM Jan 13, 2021Observed: 4.7 ft at 11:30PM Jan 13, 2021Observed: 4.69 ft at 11:45PM Jan 13, 2021Observed: 4.69 ft at 12:00AM Jan 14, 2021Observed: 4.7 ft at 12:15AM Jan 14, 2021Observed: 4.71 ft at 12:30AM Jan 14, 2021Observed: 4.7 ft at 12:45AM Jan 14, 2021Observed: 4.69 ft at 1:00AM Jan 14, 2021Observed: 4.68 ft at 1:15AM Jan 14, 2021Observed: 4.69 ft at 1:30AM Jan 14, 2021Observed: 4.69 ft at 1:45AM Jan 14, 2021Observed: 4.7 ft at 2:00AM Jan 14, 2021Observed: 4.7 ft at 2:15AM Jan 14, 2021Observed: 4.69 ft at 2:30AM Jan 14, 2021Observed: 4.7 ft at 2:45AM Jan 14, 2021Observed: 4.69 ft at 3:00AM Jan 14, 2021Observed: 4.69 ft at 3:15AM Jan 14, 2021Observed: 4.69 ft at 3:30AM Jan 14, 2021Observed: 4.69 ft at 3:45AM Jan 14, 2021Observed: 4.7 ft at 4:00AM Jan 14, 2021Observed: 4.69 ft at 4:15AM Jan 14, 2021Observed: 4.7 ft at 4:30AM Jan 14, 2021Observed: 4.68 ft at 4:45AM Jan 14, 2021Observed: 4.7 ft at 5:00AM Jan 14, 2021Observed: 4.7 ft at 5:15AM Jan 14, 2021Observed: 4.69 ft at 5:30AM Jan 14, 2021Observed: 4.7 ft at 5:45AM Jan 14, 2021Observed: 4.69 ft at 6:00AM Jan 14, 2021Observed: 4.7 ft at 6:15AM Jan 14, 2021Observed: 4.69 ft at 6:30AM Jan 14, 2021Observed: 4.69 ft at 6:45AM Jan 14, 2021Observed: 4.69 ft at 7:00AM Jan 14, 2021Observed: 4.7 ft at 7:15AM Jan 14, 2021Observed: 4.69 ft at 7:30AM Jan 14, 2021Observed: 4.69 ft at 7:45AM Jan 14, 2021Observed: 4.7 ft at 8:00AM Jan 14, 2021Observed: 4.68 ft at 8:15AM Jan 14, 2021Observed: 4.69 ft at 8:30AM Jan 14, 2021Observed: 4.69 ft at 8:45AM Jan 14, 2021Observed: 4.7 ft at 9:00AM Jan 14, 2021Observed: 4.7 ft at 9:15AM Jan 14, 2021Observed: 4.7 ft at 9:30AM Jan 14, 2021Observed: 4.69 ft at 9:45AM Jan 14, 2021Observed: 4.7 ft at 10:00AM Jan 14, 2021Observed: 4.68 ft at 10:15AM Jan 14, 2021Observed: 4.69 ft at 10:30AM Jan 14, 2021Observed: 4.69 ft at 10:45AM Jan 14, 2021Observed: 4.69 ft at 11:00AM Jan 14, 2021Observed: 4.69 ft at 11:15AM Jan 14, 2021Observed: 4.69 ft at 11:30AM Jan 14, 2021Observed: 4.69 ft at 11:45AM Jan 14, 2021Observed: 4.69 ft at 12:00PM Jan 14, 2021Observed: 4.7 ft at 12:15PM Jan 14, 2021Observed: 4.68 ft at 12:30PM Jan 14, 2021Observed: 4.67 ft at 12:45PM Jan 14, 2021Observed: 4.69 ft at 1:00PM Jan 14, 2021Observed: 4.69 ft at 1:15PM Jan 14, 2021Observed: 4.68 ft at 1:30PM Jan 14, 2021Observed: 4.69 ft at 1:45PM Jan 14, 2021Observed: 4.68 ft at 2:00PM Jan 14, 2021Observed: 4.68 ft at 3:15PM Jan 14, 2021Observed: 4.67 ft at 3:30PM Jan 14, 2021Observed: 4.68 ft at 3:45PM Jan 14, 2021Observed: 4.68 ft at 4:00PM Jan 14, 2021Observed: 4.69 ft at 4:15PM Jan 14, 2021Observed: 4.68 ft at 4:30PM Jan 14, 2021Observed: 4.68 ft at 4:45PM Jan 14, 2021Observed: 4.69 ft at 5:00PM Jan 14, 2021Observed: 4.68 ft at 5:15PM Jan 14, 2021Observed: 4.68 ft at 5:30PM Jan 14, 2021Observed: 4.68 ft at 5:45PM Jan 14, 2021Observed: 4.69 ft at 6:00PM Jan 14, 2021Observed: 4.68 ft at 6:15PM Jan 14, 2021Observed: 4.68 ft at 6:30PM Jan 14, 2021Observed: 4.69 ft at 6:45PM Jan 14, 2021Observed: 4.68 ft at 7:00PM Jan 14, 2021Observed: 4.68 ft at 7:15PM Jan 14, 2021Observed: 4.68 ft at 7:30PM Jan 14, 2021Observed: 4.69 ft at 7:45PM Jan 14, 2021Observed: 4.68 ft at 8:00PM Jan 14, 2021Observed: 4.67 ft at 8:15PM Jan 14, 2021Observed: 4.67 ft at 8:30PM Jan 14, 2021Observed: 4.66 ft at 8:45PM Jan 14, 2021Observed: 4.67 ft at 9:00PM Jan 14, 2021Observed: 4.66 ft at 9:15PM Jan 14, 2021Observed: 4.68 ft at 9:30PM Jan 14, 2021Observed: 4.67 ft at 9:45PM Jan 14, 2021Observed: 4.67 ft at 10:00PM Jan 14, 2021Observed: 4.66 ft at 10:15PM Jan 14, 2021Observed: 4.67 ft at 10:30PM Jan 14, 2021Observed: 4.67 ft at 10:45PM Jan 14, 2021Observed: 4.67 ft at 11:00PM Jan 14, 2021Observed: 4.67 ft at 11:15PM Jan 14, 2021Observed: 4.66 ft at 11:30PM Jan 14, 2021Observed: 4.67 ft at 11:45PM Jan 14, 2021Observed: 4.66 ft at 12:00AM Jan 15, 2021Observed: 4.66 ft at 12:15AM Jan 15, 2021Observed: 4.66 ft at 12:30AM Jan 15, 2021Observed: 4.66 ft at 12:45AM Jan 15, 2021Observed: 4.67 ft at 1:00AM Jan 15, 2021Observed: 4.66 ft at 1:15AM Jan 15, 2021Observed: 4.67 ft at 1:30AM Jan 15, 2021Observed: 4.66 ft at 1:45AM Jan 15, 2021Observed: 4.67 ft at 2:00AM Jan 15, 2021Observed: 4.66 ft at 2:15AM Jan 15, 2021Observed: 4.66 ft at 2:30AM Jan 15, 2021Observed: 4.66 ft at 2:45AM Jan 15, 2021Observed: 4.66 ft at 3:00AM Jan 15, 2021Observed: 4.66 ft at 3:15AM Jan 15, 2021Observed: 4.66 ft at 3:30AM Jan 15, 2021Observed: 4.66 ft at 3:45AM Jan 15, 2021Observed: 4.66 ft at 4:00AM Jan 15, 2021Observed: 4.66 ft at 4:15AM Jan 15, 2021Observed: 4.67 ft at 4:30AM Jan 15, 2021Observed: 4.66 ft at 4:45AM Jan 15, 2021Observed: 4.65 ft at 5:00AM Jan 15, 2021Observed: 4.66 ft at 5:15AM Jan 15, 2021Observed: 4.67 ft at 5:30AM Jan 15, 2021Observed: 4.65 ft at 5:45AM Jan 15, 2021Observed: 4.66 ft at 6:00AM Jan 15, 2021Observed: 4.65 ft at 6:15AM Jan 15, 2021Observed: 4.65 ft at 6:30AM Jan 15, 2021Observed: 4.65 ft at 6:45AM Jan 15, 2021Observed: 4.66 ft at 7:00AM Jan 15, 2021Observed: 4.64 ft at 7:15AM Jan 15, 2021Observed: 4.65 ft at 7:30AM Jan 15, 2021Observed: 4.65 ft at 7:45AM Jan 15, 2021Observed: 4.66 ft at 8:00AM Jan 15, 2021Observed: 4.66 ft at 8:15AM Jan 15, 2021Observed: 4.65 ft at 8:30AM Jan 15, 2021Observed: 4.64 ft at 8:45AM Jan 15, 2021Observed: 4.64 ft at 9:00AM Jan 15, 2021Observed: 4.65 ft at 9:15AM Jan 15, 2021Observed: 4.65 ft at 9:30AM Jan 15, 2021Observed: 4.65 ft at 9:45AM Jan 15, 2021Observed: 4.65 ft at 10:00AM Jan 15, 2021Observed: 4.65 ft at 10:15AM Jan 15, 2021Observed: 4.65 ft at 10:30AM Jan 15, 2021Observed: 4.65 ft at 10:45AM Jan 15, 2021Observed: 4.65 ft at 11:00AM Jan 15, 2021Observed: 4.65 ft at 11:15AM Jan 15, 2021Observed: 4.64 ft at 11:30AM Jan 15, 2021Observed: 4.65 ft at 11:45AM Jan 15, 2021Observed: 4.65 ft at 12:00PM Jan 15, 2021Observed: 4.65 ft at 12:15PM Jan 15, 2021Observed: 4.64 ft at 12:30PM Jan 15, 2021Observed: 4.64 ft at 12:45PM Jan 15, 2021Observed: 4.65 ft at 1:00PM Jan 15, 2021Observed: 4.65 ft at 1:15PM Jan 15, 2021Observed: 4.65 ft at 1:30PM Jan 15, 2021Observed: 4.65 ft at 1:45PM Jan 15, 2021Observed: 4.64 ft at 2:00PM Jan 15, 2021Observed: 4.63 ft at 2:15PM Jan 15, 2021Observed: 4.64 ft at 2:30PM Jan 15, 2021Observed: 4.65 ft at 2:45PM Jan 15, 2021Observed: 4.65 ft at 3:00PM Jan 15, 2021Observed: 4.65 ft at 3:15PM Jan 15, 2021Observed: 4.65 ft at 3:30PM Jan 15, 2021Observed: 4.65 ft at 3:45PM Jan 15, 2021Observed: 4.65 ft at 4:00PM Jan 15, 2021Observed: 4.65 ft at 4:15PM Jan 15, 2021Observed: 4.64 ft at 4:30PM Jan 15, 2021Observed: 4.65 ft at 4:45PM Jan 15, 2021Observed: 4.66 ft at 5:00PM Jan 15, 2021Observed: 4.65 ft at 5:15PM Jan 15, 2021Observed: 4.67 ft at 5:30PM Jan 15, 2021Observed: 4.66 ft at 5:45PM Jan 15, 2021Observed: 4.66 ft at 6:00PM Jan 15, 2021Observed: 4.66 ft at 6:15PM Jan 15, 2021Observed: 4.67 ft at 6:30PM Jan 15, 2021Observed: 4.66 ft at 6:45PM Jan 15, 2021Observed: 4.65 ft at 7:00PM Jan 15, 2021Observed: 4.66 ft at 7:15PM Jan 15, 2021Observed: 4.67 ft at 7:30PM Jan 15, 2021Observed: 4.65 ft at 7:45PM Jan 15, 2021Observed: 4.64 ft at 8:00PM Jan 15, 2021Observed: 4.65 ft at 8:15PM Jan 15, 2021Observed: 4.65 ft at 8:30PM Jan 15, 2021Observed: 4.65 ft at 8:45PM Jan 15, 2021Observed: 4.65 ft at 9:00PM Jan 15, 2021Observed: 4.66 ft at 9:15PM Jan 15, 2021Observed: 4.65 ft at 9:30PM Jan 15, 2021Observed: 4.65 ft at 9:45PM Jan 15, 2021Observed: 4.65 ft at 10:00PM Jan 15, 2021Observed: 4.66 ft at 10:15PM Jan 15, 2021Observed: 4.66 ft at 10:30PM Jan 15, 2021Observed: 4.65 ft at 10:45PM Jan 15, 2021Observed: 4.65 ft at 11:00PM Jan 15, 2021Observed: 4.65 ft at 11:15PM Jan 15, 2021Observed: 4.66 ft at 11:30PM Jan 15, 2021Observed: 4.64 ft at 11:45PM Jan 15, 2021Observed: 4.65 ft at 12:00AM Jan 16, 2021Observed: 4.65 ft at 12:15AM Jan 16, 2021Observed: 4.65 ft at 12:30AM Jan 16, 2021Observed: 4.65 ft at 12:45AM Jan 16, 2021Observed: 4.64 ft at 1:00AM Jan 16, 2021Observed: 4.65 ft at 1:15AM Jan 16, 2021Observed: 4.64 ft at 1:30AM Jan 16, 2021Observed: 4.65 ft at 1:45AM Jan 16, 2021Observed: 4.65 ft at 2:00AM Jan 16, 2021Observed: 4.65 ft at 2:15AM Jan 16, 2021Observed: 4.64 ft at 2:30AM Jan 16, 2021Observed: 4.66 ft at 2:45AM Jan 16, 2021Observed: 4.66 ft at 3:00AM Jan 16, 2021Observed: 4.65 ft at 3:15AM Jan 16, 2021Observed: 4.65 ft at 3:30AM Jan 16, 2021Observed: 4.65 ft at 3:45AM Jan 16, 2021Observed: 4.65 ft at 4:00AM Jan 16, 2021Observed: 4.65 ft at 4:15AM Jan 16, 2021Observed: 4.65 ft at 4:30AM Jan 16, 2021Observed: 4.65 ft at 4:45AM Jan 16, 2021Observed: 4.65 ft at 5:00AM Jan 16, 2021Observed: 4.65 ft at 5:15AM Jan 16, 2021Observed: 4.66 ft at 5:30AM Jan 16, 2021Observed: 4.65 ft at 5:45AM Jan 16, 2021Observed: 4.65 ft at 6:00AM Jan 16, 2021Observed: 4.64 ft at 6:15AM Jan 16, 2021Observed: 4.65 ft at 6:30AM Jan 16, 2021Observed: 4.65 ft at 6:45AM Jan 16, 2021Observed: 4.66 ft at 7:00AM Jan 16, 2021Observed: 4.65 ft at 7:15AM Jan 16, 2021Observed: 4.64 ft at 7:30AM Jan 16, 2021Observed: 4.64 ft at 7:45AM Jan 16, 2021Observed: 4.64 ft at 8:00AM Jan 16, 2021Observed: 4.65 ft at 8:15AM Jan 16, 2021Observed: 4.65 ft at 8:30AM Jan 16, 2021Observed: 4.65 ft at 8:45AM Jan 16, 2021Observed: 4.64 ft at 9:00AM Jan 16, 2021Observed: 4.66 ft at 9:15AM Jan 16, 2021Observed: 4.65 ft at 9:30AM Jan 16, 2021Observed: 4.65 ft at 9:45AM Jan 16, 2021Observed: 4.63 ft at 10:00AM Jan 16, 2021Observed: 4.65 ft at 10:15AM Jan 16, 2021Observed: 4.63 ft at 10:30AM Jan 16, 2021Observed: 4.64 ft at 10:45AM Jan 16, 2021Observed: 4.65 ft at 11:00AM Jan 16, 2021Observed: 4.64 ft at 11:15AM Jan 16, 2021Observed: 4.65 ft at 11:30AM Jan 16, 2021Observed: 4.65 ft at 11:45AM Jan 16, 2021Observed: 4.66 ft at 12:00PM Jan 16, 2021Observed: 4.65 ft at 12:15PM Jan 16, 2021Observed: 4.65 ft at 12:30PM Jan 16, 2021Observed: 4.64 ft at 12:45PM Jan 16, 2021Observed: 4.65 ft at 1:00PM Jan 16, 2021Observed: 4.64 ft at 1:15PM Jan 16, 2021Observed: 4.64 ft at 1:30PM Jan 16, 2021Observed: 4.64 ft at 1:45PM Jan 16, 2021Observed: 4.65 ft at 2:00PM Jan 16, 2021Observed: 4.64 ft at 2:15PM Jan 16, 2021Observed: 4.66 ft at 2:30PM Jan 16, 2021Observed: 4.64 ft at 2:45PM Jan 16, 2021Observed: 4.64 ft at 3:00PM Jan 16, 2021Observed: 4.65 ft at 3:15PM Jan 16, 2021Observed: 4.64 ft at 3:30PM Jan 16, 2021Observed: 4.65 ft at 3:45PM Jan 16, 2021Observed: 4.65 ft at 4:00PM Jan 16, 2021Observed: 4.64 ft at 4:15PM Jan 16, 2021Observed: 4.65 ft at 4:30PM Jan 16, 2021Observed: 4.63 ft at 4:45PM Jan 16, 2021Observed: 4.63 ft at 5:00PM Jan 16, 2021Observed: 4.65 ft at 5:15PM Jan 16, 2021Observed: 4.65 ft at 5:30PM Jan 16, 2021Observed: 4.64 ft at 5:45PM Jan 16, 2021Observed: 4.63 ft at 6:00PM Jan 16, 2021Observed: 4.63 ft at 6:15PM Jan 16, 2021Observed: 4.62 ft at 6:30PM Jan 16, 2021Observed: 4.63 ft at 6:45PM Jan 16, 2021Observed: 4.63 ft at 7:00PM Jan 16, 2021Observed: 4.63 ft at 7:15PM Jan 16, 2021Observed: 4.62 ft at 7:30PM Jan 16, 2021Observed: 4.64 ft at 7:45PM Jan 16, 2021Observed: 4.63 ft at 8:00PM Jan 16, 2021Observed: 4.63 ft at 8:15PM Jan 16, 2021Observed: 4.62 ft at 8:30PM Jan 16, 2021Observed: 4.62 ft at 8:45PM Jan 16, 2021Observed: 4.62 ft at 9:00PM Jan 16, 2021Observed: 4.62 ft at 9:15PM Jan 16, 2021Observed: 4.61 ft at 9:30PM Jan 16, 2021Observed: 4.63 ft at 9:45PM Jan 16, 2021Observed: 4.62 ft at 10:00PM Jan 16, 2021Observed: 4.62 ft at 10:15PM Jan 16, 2021Observed: 4.62 ft at 10:30PM Jan 16, 2021Observed: 4.62 ft at 10:45PM Jan 16, 2021Observed: 4.62 ft at 11:00PM Jan 16, 2021Observed: 4.6 ft at 11:15PM Jan 16, 2021Observed: 4.61 ft at 11:30PM Jan 16, 2021Observed: 4.62 ft at 11:45PM Jan 16, 2021Observed: 4.62 ft at 12:00AM Jan 17, 2021Observed: 4.61 ft at 12:15AM Jan 17, 2021Observed: 4.62 ft at 12:30AM Jan 17, 2021Observed: 4.63 ft at 12:45AM Jan 17, 2021Observed: 4.61 ft at 1:00AM Jan 17, 2021Observed: 4.62 ft at 1:15AM Jan 17, 2021Observed: 4.62 ft at 1:30AM Jan 17, 2021Observed: 4.61 ft at 1:45AM Jan 17, 2021Observed: 4.6 ft at 2:00AM Jan 17, 2021Observed: 4.61 ft at 2:15AM Jan 17, 2021Observed: 4.6 ft at 2:30AM Jan 17, 2021Observed: 4.61 ft at 2:45AM Jan 17, 2021Observed: 4.6 ft at 3:00AM Jan 17, 2021Observed: 4.6 ft at 3:15AM Jan 17, 2021Observed: 4.58 ft at 3:30AM Jan 17, 2021Observed: 4.61 ft at 3:45AM Jan 17, 2021Observed: 4.6 ft at 4:00AM Jan 17, 2021Observed: 4.6 ft at 4:15AM Jan 17, 2021Observed: 4.6 ft at 4:30AM Jan 17, 2021Observed: 4.59 ft at 4:45AM Jan 17, 2021Observed: 4.59 ft at 5:00AM Jan 17, 2021Observed: 4.59 ft at 5:15AM Jan 17, 2021Observed: 4.6 ft at 5:30AM Jan 17, 2021Observed: 4.6 ft at 5:45AM Jan 17, 2021Observed: 4.59 ft at 6:00AM Jan 17, 2021Observed: 4.59 ft at 6:15AM Jan 17, 2021Observed: 4.58 ft at 6:30AM Jan 17, 2021Observed: 4.59 ft at 6:45AM Jan 17, 2021Observed: 4.6 ft at 7:00AM Jan 17, 2021Observed: 4.6 ft at 7:15AM Jan 17, 2021Observed: 4.58 ft at 7:30AM Jan 17, 2021Observed: 4.59 ft at 7:45AM Jan 17, 2021Observed: 4.6 ft at 8:00AM Jan 17, 2021Observed: 4.58 ft at 8:15AM Jan 17, 2021Observed: 4.59 ft at 8:30AM Jan 17, 2021Observed: 4.6 ft at 8:45AM Jan 17, 2021Observed: 4.58 ft at 9:00AM Jan 17, 2021Observed: 4.6 ft at 9:15AM Jan 17, 2021Observed: 4.59 ft at 9:30AM Jan 17, 2021Observed: 4.59 ft at 9:45AM Jan 17, 2021Observed: 4.6 ft at 10:00AM Jan 17, 2021Observed: 4.59 ft at 10:15AM Jan 17, 2021Observed: 4.59 ft at 10:30AM Jan 17, 2021Observed: 4.6 ft at 10:45AM Jan 17, 2021Observed: 4.59 ft at 11:00AM Jan 17, 2021Observed: 4.58 ft at 11:15AM Jan 17, 2021Observed: 4.59 ft at 11:30AM Jan 17, 2021Observed: 4.6 ft at 11:45AM Jan 17, 2021Observed: 4.59 ft at 12:00PM Jan 17, 2021Observed: 4.59 ft at 12:15PM Jan 17, 2021Observed: 4.6 ft at 12:30PM Jan 17, 2021Observed: 4.6 ft at 12:45PM Jan 17, 2021Observed: 4.59 ft at 1:00PM Jan 17, 2021Observed: 4.59 ft at 1:15PM Jan 17, 2021Observed: 4.58 ft at 1:30PM Jan 17, 2021Observed: 4.6 ft at 1:45PM Jan 17, 2021Observed: 4.59 ft at 2:00PM Jan 17, 2021Observed: 4.6 ft at 2:15PM Jan 17, 2021Observed: 4.59 ft at 2:30PM Jan 17, 2021Observed: 4.59 ft at 2:45PM Jan 17, 2021Observed: 4.59 ft at 3:00PM Jan 17, 2021Observed: 4.59 ft at 3:15PM Jan 17, 2021Observed: 4.59 ft at 3:30PM Jan 17, 2021Observed: 4.58 ft at 3:45PM Jan 17, 2021Observed: 4.59 ft at 4:00PM Jan 17, 2021Observed: 4.59 ft at 4:15PM Jan 17, 2021Observed: 4.58 ft at 4:30PM Jan 17, 2021Observed: 4.59 ft at 4:45PM Jan 17, 2021Observed: 4.58 ft at 5:00PM Jan 17, 2021Highest Forecast: 4.6 ft 7:00PM Jan 17, 2021Highest Forecast: 4.6 ft 1:00AM Jan 18, 2021Highest Forecast: 4.6 ft 7:00AM Jan 18, 2021Highest Forecast: 4.6 ft 1:00PM Jan 18, 2021Highest Forecast: 4.6 ft 7:00PM Jan 18, 2021Highest Forecast: 4.6 ft 1:00AM Jan 19, 2021Highest Forecast: 4.6 ft 7:00AM Jan 19, 2021Highest Forecast: 4.6 ft 1:00PM Jan 19, 2021Highest Forecast: 4.6 ft 7:00PM Jan 19, 2021Highest Forecast: 4.6 ft 1:00AM Jan 20, 2021Highest Forecast: 4.6 ft 7:00AM Jan 20, 2021USGS--Water Resources of the United StatesPETW2(plotting HGIRG) Graph Created (5:40PM Jan 17, 2021)ObservedForecast (issued 10:25AM Jan 17)Latest observed value: 4.58 ft at 5:00 PM EST 17-Jan-2021. Flood Stage is 14 ft
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Metadata
NOTE: Stage may be affected by ice.

NOTE: Forecasts for the South Branch Potomac River near Petersburg are issued routinely year-round.

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Upstream Gauge - at Franklin Upstream Gauge Downstream Gauge Downstream Gauge - near Springfield
Flood Categories (in feet)
Major Flood Stage: 17
Moderate Flood Stage: 15
Flood Stage: 14
Action Stage: 12
Low Stage (in feet): -9999

Historic Crests
(1) 22.83 ft on 06/17/1949
(2) 22.20 ft on 09/06/1996
(3) 21.80 ft on 11/05/1985
(4) 21.20 ft on 11/24/1877
(5) 20.30 ft on 03/17/1936
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 14.38 ft on 05/16/2014
(2) 11.80 ft on 05/18/2011
(3) 12.32 ft on 04/17/2011
(4) 13.54 ft on 04/13/2011
(5) 11.66 ft on 03/11/2011
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 0.40 ft on 08/20/1988

For more information on your flood risk go to www.floodsmart.gov.
Zoom Level:14
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Gauge LocationGauge Map Marker
 Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
22.5 Significant flooding is occurring. More than a hundred buildings in Petersburg are flooded.
20 Several city blocks on the south side of Petersburg are flooded. Backwater may also flood portions of the eastern sections of the city.
18 Water covers the entire runway at Grant County Airport and is in nearby structures. Hundreds of acres of lowlands are flooded. Water approaches homes on the north side of the river in Petersburg.
17 Water reaches structures at the Grant County Airport. Flooding also begins south of the river on the south side of Petersburg.
15 Two structures are flooded upstream of Petersburg. Water also approaches the runway at the Petersburg Airport.
14 Water approaches structures upstream of Petersburg. Water also begins to cover Fish Hatchery Road near the river.
12 Water overflows the natural banks into nearby lowlands. River Road alongside the river begins to flood in its lowest spots.
About This Location Collapse

Latitude: 38.991111° N, Longitude: 79.176111° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 14 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 29 968.34 ft 981.34 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:
Additional Information Collapse
Potential River Levels - Used to
Potential River Levels
Used to Estimate the Chance of Flooding and the Range of Possible River Levels
10 Day (HEFS) 7 Day (NAEFS) 7 Day (GEFS)
HEFS Ensemble NAEFS Ensemble  GEFS Ensemble 

Note: Use the official hydrograph at the top of this web page for river levels within the next 72 hours.

Click individual graphics to enlarge.
Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
(Baltimore/Washington) Sterling Weather Forecast Office
43858 Weather Service Rd.
Sterling, VA 20166
(703) 996-2200
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