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Hydrograph River at a Glance Download
Potomac River at Hancock Stage (ft)Flow (kcfs)Observed: 5.16 ft at 4:15PM Jan 30, 2023Observed: 5.16 ft at 4:30PM Jan 30, 2023Observed: 5.16 ft at 4:45PM Jan 30, 2023Observed: 5.16 ft at 5:00PM Jan 30, 2023Observed: 5.16 ft at 5:15PM Jan 30, 2023Observed: 5.16 ft at 5:30PM Jan 30, 2023Observed: 5.16 ft at 5:45PM Jan 30, 2023Observed: 5.16 ft at 6:00PM Jan 30, 2023Observed: 5.16 ft at 6:15PM Jan 30, 2023Observed: 5.16 ft at 6:30PM Jan 30, 2023Observed: 5.16 ft at 6:45PM Jan 30, 2023Observed: 5.16 ft at 7:00PM Jan 30, 2023Observed: 5.16 ft at 7:15PM Jan 30, 2023Observed: 5.16 ft at 7:30PM Jan 30, 2023Observed: 5.16 ft at 7:45PM Jan 30, 2023Observed: 5.16 ft at 8:00PM Jan 30, 2023Observed: 5.16 ft at 8:15PM Jan 30, 2023Observed: 5.16 ft at 8:30PM Jan 30, 2023Observed: 5.15 ft at 8:45PM Jan 30, 2023Observed: 5.15 ft at 9:00PM Jan 30, 2023Observed: 5.14 ft at 9:15PM Jan 30, 2023Observed: 5.14 ft at 9:30PM Jan 30, 2023Observed: 5.14 ft at 9:45PM Jan 30, 2023Observed: 5.14 ft at 10:00PM Jan 30, 2023Observed: 5.13 ft at 10:15PM Jan 30, 2023Observed: 5.13 ft at 10:30PM Jan 30, 2023Observed: 5.13 ft at 10:45PM Jan 30, 2023Observed: 5.13 ft at 11:00PM Jan 30, 2023Observed: 5.13 ft at 11:15PM Jan 30, 2023Observed: 5.13 ft at 11:30PM Jan 30, 2023Observed: 5.13 ft at 11:45PM Jan 30, 2023Observed: 5.13 ft at 12:00AM Jan 31, 2023Observed: 5.12 ft at 12:15AM Jan 31, 2023Observed: 5.12 ft at 12:30AM Jan 31, 2023Observed: 5.12 ft at 12:45AM Jan 31, 2023Observed: 5.12 ft at 1:00AM Jan 31, 2023Observed: 5.12 ft at 1:15AM Jan 31, 2023Observed: 5.12 ft at 1:30AM Jan 31, 2023Observed: 5.12 ft at 1:45AM Jan 31, 2023Observed: 5.12 ft at 2:00AM Jan 31, 2023Observed: 5.12 ft at 2:15AM Jan 31, 2023Observed: 5.12 ft at 2:30AM Jan 31, 2023Observed: 5.12 ft at 2:45AM Jan 31, 2023Observed: 5.12 ft at 3:00AM Jan 31, 2023Observed: 5.12 ft at 3:15AM Jan 31, 2023Observed: 5.12 ft at 3:30AM Jan 31, 2023Observed: 5.12 ft at 3:31AM Jan 31, 2023Observed: 5.11 ft at 3:45AM Jan 31, 2023Observed: 5.11 ft at 4:00AM Jan 31, 2023Observed: 5.11 ft at 4:15AM Jan 31, 2023Observed: 5.11 ft at 4:30AM Jan 31, 2023Observed: 5.11 ft at 4:45AM Jan 31, 2023Observed: 5.11 ft at 5:00AM Jan 31, 2023Observed: 5.11 ft at 5:15AM Jan 31, 2023Observed: 5.11 ft at 5:30AM Jan 31, 2023Observed: 5.11 ft at 5:45AM Jan 31, 2023Observed: 5.11 ft at 6:00AM Jan 31, 2023Observed: 5.11 ft at 6:15AM Jan 31, 2023Observed: 5.11 ft at 6:30AM Jan 31, 2023Observed: 5.11 ft at 6:45AM Jan 31, 2023Observed: 5.11 ft at 7:00AM Jan 31, 2023Observed: 5.11 ft at 7:15AM Jan 31, 2023Observed: 5.11 ft at 7:30AM Jan 31, 2023Observed: 5.11 ft at 7:45AM Jan 31, 2023Observed: 5.11 ft at 8:00AM Jan 31, 2023Observed: 5.11 ft at 8:15AM Jan 31, 2023Observed: 5.11 ft at 8:30AM Jan 31, 2023Observed: 5.11 ft at 8:45AM Jan 31, 2023Observed: 5.11 ft at 9:00AM Jan 31, 2023Observed: 5.11 ft at 9:15AM Jan 31, 2023Observed: 5.11 ft at 9:30AM Jan 31, 2023Observed: 5.11 ft at 9:45AM Jan 31, 2023Observed: 5.11 ft at 10:00AM Jan 31, 2023Observed: 5.11 ft at 10:15AM Jan 31, 2023Observed: 5.11 ft at 10:30AM Jan 31, 2023Observed: 5.11 ft at 10:45AM Jan 31, 2023Observed: 5.11 ft at 11:00AM Jan 31, 2023Observed: 5.11 ft at 11:15AM Jan 31, 2023Observed: 5.11 ft at 11:30AM Jan 31, 2023Observed: 5.11 ft at 11:31AM Jan 31, 2023Observed: 5.11 ft at 11:45AM Jan 31, 2023Observed: 5.11 ft at 12:00PM Jan 31, 2023Observed: 5.11 ft at 12:15PM Jan 31, 2023Observed: 5.11 ft at 12:30PM Jan 31, 2023Observed: 5.11 ft at 12:45PM Jan 31, 2023Observed: 5.11 ft at 1:00PM Jan 31, 2023Observed: 5.12 ft at 1:15PM Jan 31, 2023Observed: 5.12 ft at 1:30PM Jan 31, 2023Observed: 5.12 ft at 1:45PM Jan 31, 2023Observed: 5.12 ft at 2:00PM Jan 31, 2023Observed: 5.12 ft at 2:15PM Jan 31, 2023Observed: 5.12 ft at 2:30PM Jan 31, 2023Observed: 5.12 ft at 2:45PM Jan 31, 2023Observed: 5.12 ft at 3:00PM Jan 31, 2023Observed: 5.12 ft at 3:15PM Jan 31, 2023Observed: 5.12 ft at 3:30PM Jan 31, 2023Observed: 5.12 ft at 3:45PM Jan 31, 2023Observed: 5.12 ft at 4:00PM Jan 31, 2023Observed: 5.12 ft at 4:15PM Jan 31, 2023Observed: 5.12 ft at 4:30PM Jan 31, 2023Observed: 5.12 ft at 4:45PM Jan 31, 2023Observed: 5.12 ft at 5:00PM Jan 31, 2023Observed: 5.12 ft at 5:15PM Jan 31, 2023Observed: 5.12 ft at 5:30PM Jan 31, 2023Observed: 5.12 ft at 5:45PM Jan 31, 2023Observed: 5.12 ft at 6:00PM Jan 31, 2023Observed: 5.12 ft at 6:15PM Jan 31, 2023Observed: 5.12 ft at 6:30PM Jan 31, 2023Observed: 5.12 ft at 6:45PM Jan 31, 2023Observed: 5.12 ft at 7:00PM Jan 31, 2023Observed: 5.12 ft at 7:15PM Jan 31, 2023Observed: 5.12 ft at 7:30PM Jan 31, 2023Observed: 5.12 ft at 7:45PM Jan 31, 2023Observed: 5.12 ft at 7:46PM Jan 31, 2023Observed: 5.12 ft at 8:00PM Jan 31, 2023Observed: 5.12 ft at 8:15PM Jan 31, 2023Observed: 5.12 ft at 8:30PM Jan 31, 2023Observed: 5.12 ft at 8:45PM Jan 31, 2023Observed: 5.12 ft at 9:00PM Jan 31, 2023Observed: 5.12 ft at 9:15PM Jan 31, 2023Observed: 5.12 ft at 9:30PM Jan 31, 2023Observed: 5.12 ft at 9:45PM Jan 31, 2023Observed: 5.12 ft at 10:00PM Jan 31, 2023Observed: 5.12 ft at 10:15PM Jan 31, 2023Observed: 5.12 ft at 10:30PM Jan 31, 2023Observed: 5.12 ft at 10:45PM Jan 31, 2023Observed: 5.12 ft at 11:00PM Jan 31, 2023Observed: 5.12 ft at 11:15PM Jan 31, 2023Observed: 5.12 ft at 11:30PM Jan 31, 2023Observed: 5.12 ft at 11:45PM Jan 31, 2023Observed: 5.12 ft at 12:00AM Feb 01, 2023Observed: 5.12 ft at 12:15AM Feb 01, 2023Observed: 5.12 ft at 12:30AM Feb 01, 2023Observed: 5.12 ft at 12:45AM Feb 01, 2023Observed: 5.12 ft at 1:00AM Feb 01, 2023Observed: 5.12 ft at 1:15AM Feb 01, 2023Observed: 5.12 ft at 1:30AM Feb 01, 2023Observed: 5.12 ft at 1:45AM Feb 01, 2023Observed: 5.12 ft at 2:00AM Feb 01, 2023Observed: 5.12 ft at 2:15AM Feb 01, 2023Observed: 5.12 ft at 2:30AM Feb 01, 2023Observed: 5.12 ft at 2:45AM Feb 01, 2023Observed: 5.12 ft at 3:00AM Feb 01, 2023Observed: 5.12 ft at 3:15AM Feb 01, 2023Observed: 5.12 ft at 3:30AM Feb 01, 2023Observed: 5.12 ft at 3:45AM Feb 01, 2023Observed: 5.12 ft at 4:00AM Feb 01, 2023Observed: 5.12 ft at 4:15AM Feb 01, 2023Observed: 5.12 ft at 4:30AM Feb 01, 2023Observed: 5.12 ft at 4:45AM Feb 01, 2023Observed: 5.12 ft at 5:00AM Feb 01, 2023Observed: 5.12 ft at 5:15AM Feb 01, 2023Observed: 5.12 ft at 5:30AM Feb 01, 2023Observed: 5.12 ft at 5:45AM Feb 01, 2023Observed: 5.12 ft at 6:00AM Feb 01, 2023Observed: 5.12 ft at 6:15AM Feb 01, 2023Observed: 5.12 ft at 6:30AM Feb 01, 2023Observed: 5.12 ft at 6:45AM Feb 01, 2023Observed: 5.12 ft at 7:00AM Feb 01, 2023Observed: 5.12 ft at 7:15AM Feb 01, 2023Observed: 5.14 ft at 7:30AM Feb 01, 2023Observed: 5.14 ft at 7:45AM Feb 01, 2023Observed: 5.14 ft at 8:00AM Feb 01, 2023Observed: 5.14 ft at 8:15AM Feb 01, 2023Observed: 5.14 ft at 8:30AM Feb 01, 2023Observed: 5.14 ft at 8:45AM Feb 01, 2023Observed: 5.14 ft at 9:00AM Feb 01, 2023Observed: 5.14 ft at 9:15AM Feb 01, 2023Observed: 5.14 ft at 9:30AM Feb 01, 2023Observed: 5.14 ft at 9:45AM Feb 01, 2023Observed: 5.14 ft at 10:00AM Feb 01, 2023Observed: 5.14 ft at 10:15AM Feb 01, 2023Observed: 5.14 ft at 10:30AM Feb 01, 2023Observed: 5.14 ft at 10:45AM Feb 01, 2023Observed: 5.14 ft at 11:00AM Feb 01, 2023Observed: 5.14 ft at 11:15AM Feb 01, 2023Observed: 5.14 ft at 11:30AM Feb 01, 2023Observed: 5.14 ft at 11:45AM Feb 01, 2023Observed: 5.14 ft at 11:46AM Feb 01, 2023Observed: 5.14 ft at 12:00PM Feb 01, 2023Observed: 5.14 ft at 12:15PM Feb 01, 2023Observed: 5.14 ft at 12:30PM Feb 01, 2023Observed: 5.14 ft at 12:45PM Feb 01, 2023Observed: 5.14 ft at 1:00PM Feb 01, 2023Observed: 5.14 ft at 1:15PM Feb 01, 2023Observed: 5.14 ft at 1:30PM Feb 01, 2023Observed: 5.14 ft at 1:45PM Feb 01, 2023Observed: 5.14 ft at 2:00PM Feb 01, 2023Observed: 5.14 ft at 2:15PM Feb 01, 2023Observed: 5.14 ft at 2:30PM Feb 01, 2023Observed: 5.14 ft at 2:45PM Feb 01, 2023Observed: 5.14 ft at 3:00PM Feb 01, 2023Observed: 5.14 ft at 3:15PM Feb 01, 2023Observed: 5.15 ft at 3:30PM Feb 01, 2023Observed: 5.15 ft at 3:45PM Feb 01, 2023Observed: 5.15 ft at 4:00PM Feb 01, 2023Observed: 5.15 ft at 4:15PM Feb 01, 2023Observed: 5.15 ft at 4:30PM Feb 01, 2023Observed: 5.15 ft at 4:45PM Feb 01, 2023Observed: 5.15 ft at 5:00PM Feb 01, 2023Observed: 5.15 ft at 5:15PM Feb 01, 2023Observed: 5.15 ft at 5:30PM Feb 01, 2023Observed: 5.15 ft at 5:45PM Feb 01, 2023Observed: 5.15 ft at 6:00PM Feb 01, 2023Observed: 5.15 ft at 6:15PM Feb 01, 2023Observed: 5.15 ft at 6:30PM Feb 01, 2023Observed: 5.15 ft at 6:45PM Feb 01, 2023Observed: 5.15 ft at 7:00PM Feb 01, 2023Observed: 5.15 ft at 7:15PM Feb 01, 2023Observed: 5.15 ft at 7:30PM Feb 01, 2023Observed: 5.15 ft at 7:45PM Feb 01, 2023Observed: 5.15 ft at 7:46PM Feb 01, 2023Observed: 5.15 ft at 8:00PM Feb 01, 2023Observed: 5.15 ft at 8:15PM Feb 01, 2023Observed: 5.15 ft at 8:30PM Feb 01, 2023Observed: 5.15 ft at 8:45PM Feb 01, 2023Observed: 5.15 ft at 9:00PM Feb 01, 2023Observed: 5.15 ft at 9:15PM Feb 01, 2023Observed: 5.15 ft at 9:30PM Feb 01, 2023Observed: 5.15 ft at 9:45PM Feb 01, 2023Observed: 5.15 ft at 10:00PM Feb 01, 2023Observed: 5.15 ft at 10:15PM Feb 01, 2023Observed: 5.15 ft at 10:30PM Feb 01, 2023Observed: 5.15 ft at 10:45PM Feb 01, 2023Observed: 5.15 ft at 11:00PM Feb 01, 2023Observed: 5.15 ft at 11:15PM Feb 01, 2023Observed: 5.15 ft at 11:30PM Feb 01, 2023Observed: 5.15 ft at 11:45PM Feb 01, 2023Observed: 5.15 ft at 12:00AM Feb 02, 2023Observed: 5.15 ft at 12:15AM Feb 02, 2023Observed: 5.15 ft at 12:30AM Feb 02, 2023Observed: 5.15 ft at 12:45AM Feb 02, 2023Observed: 5.14 ft at 1:00AM Feb 02, 2023Observed: 5.14 ft at 1:15AM Feb 02, 2023Observed: 5.14 ft at 1:30AM Feb 02, 2023Observed: 5.14 ft at 1:45AM Feb 02, 2023Observed: 5.14 ft at 2:00AM Feb 02, 2023Observed: 5.14 ft at 2:15AM Feb 02, 2023Observed: 5.14 ft at 2:30AM Feb 02, 2023Observed: 5.14 ft at 2:45AM Feb 02, 2023Observed: 5.14 ft at 3:00AM Feb 02, 2023Observed: 5.14 ft at 3:15AM Feb 02, 2023Observed: 5.14 ft at 3:30AM Feb 02, 2023Observed: 5.14 ft at 3:45AM Feb 02, 2023Observed: 5.14 ft at 3:46AM Feb 02, 2023Observed: 5.14 ft at 4:00AM Feb 02, 2023Observed: 5.14 ft at 4:15AM Feb 02, 2023Observed: 5.14 ft at 4:30AM Feb 02, 2023Observed: 5.14 ft at 4:45AM Feb 02, 2023Observed: 5.14 ft at 5:00AM Feb 02, 2023Observed: 5.14 ft at 5:15AM Feb 02, 2023Observed: 5.14 ft at 5:30AM Feb 02, 2023Observed: 5.14 ft at 5:45AM Feb 02, 2023Observed: 5.14 ft at 6:00AM Feb 02, 2023Observed: 5.14 ft at 6:15AM Feb 02, 2023Observed: 5.14 ft at 6:30AM Feb 02, 2023Observed: 5.14 ft at 6:45AM Feb 02, 2023Observed: 5.14 ft at 7:00AM Feb 02, 2023Observed: 5.14 ft at 7:15AM Feb 02, 2023Observed: 5.14 ft at 7:30AM Feb 02, 2023Observed: 5.14 ft at 7:45AM Feb 02, 2023Observed: 5.14 ft at 8:00AM Feb 02, 2023Observed: 5.14 ft at 8:15AM Feb 02, 2023Observed: 5.14 ft at 8:30AM Feb 02, 2023Observed: 5.14 ft at 8:45AM Feb 02, 2023Observed: 5.14 ft at 9:00AM Feb 02, 2023Observed: 5.14 ft at 9:15AM Feb 02, 2023Observed: 5.14 ft at 9:30AM Feb 02, 2023Observed: 5.14 ft at 9:45AM Feb 02, 2023Observed: 5.14 ft at 10:00AM Feb 02, 2023Observed: 5.14 ft at 10:15AM Feb 02, 2023Observed: 5.14 ft at 10:30AM Feb 02, 2023Observed: 5.14 ft at 10:45AM Feb 02, 2023Observed: 5.14 ft at 11:00AM Feb 02, 2023Observed: 5.14 ft at 11:15AM Feb 02, 2023Observed: 5.14 ft at 11:30AM Feb 02, 2023Observed: 5.14 ft at 11:45AM Feb 02, 2023Observed: 5.14 ft at 11:46AM Feb 02, 2023Observed: 5.14 ft at 12:00PM Feb 02, 2023Observed: 5.14 ft at 12:15PM Feb 02, 2023Observed: 5.14 ft at 12:30PM Feb 02, 2023Observed: 5.14 ft at 12:45PM Feb 02, 2023Observed: 5.14 ft at 1:00PM Feb 02, 2023Observed: 5.14 ft at 1:15PM Feb 02, 2023Observed: 5.14 ft at 1:30PM Feb 02, 2023Observed: 5.14 ft at 1:45PM Feb 02, 2023Observed: 5.14 ft at 2:00PM Feb 02, 2023Observed: 5.14 ft at 2:15PM Feb 02, 2023Observed: 5.14 ft at 2:30PM Feb 02, 2023Observed: 5.14 ft at 2:45PM Feb 02, 2023Observed: 5.14 ft at 3:00PM Feb 02, 2023Observed: 5.14 ft at 3:15PM Feb 02, 2023Observed: 5.14 ft at 3:30PM Feb 02, 2023Observed: 5.14 ft at 3:45PM Feb 02, 2023Observed: 5.14 ft at 4:00PM Feb 02, 2023Observed: 5.14 ft at 4:15PM Feb 02, 2023Observed: 5.14 ft at 4:30PM Feb 02, 2023Observed: 5.14 ft at 4:45PM Feb 02, 2023Observed: 5.14 ft at 5:00PM Feb 02, 2023Observed: 5.14 ft at 5:15PM Feb 02, 2023Observed: 5.14 ft at 5:30PM Feb 02, 2023Observed: 5.14 ft at 5:45PM Feb 02, 2023Observed: 5.15 ft at 6:00PM Feb 02, 2023Observed: 5.15 ft at 6:15PM Feb 02, 2023Observed: 5.15 ft at 6:30PM Feb 02, 2023Observed: 5.15 ft at 6:45PM Feb 02, 2023Observed: 5.18 ft at 7:00PM Feb 02, 2023Observed: 5.18 ft at 7:15PM Feb 02, 2023Observed: 5.18 ft at 7:30PM Feb 02, 2023Observed: 5.19 ft at 7:45PM Feb 02, 2023Observed: 5.19 ft at 7:46PM Feb 02, 2023Observed: 5.21 ft at 8:00PM Feb 02, 2023Observed: 5.22 ft at 8:15PM Feb 02, 2023Observed: 5.22 ft at 8:30PM Feb 02, 2023Observed: 5.23 ft at 8:45PM Feb 02, 2023Observed: 5.26 ft at 9:00PM Feb 02, 2023Observed: 5.27 ft at 9:15PM Feb 02, 2023Observed: 5.28 ft at 9:30PM Feb 02, 2023Observed: 5.3 ft at 9:45PM Feb 02, 2023Observed: 5.3 ft at 10:00PM Feb 02, 2023Observed: 5.32 ft at 10:15PM Feb 02, 2023Observed: 5.33 ft at 10:30PM Feb 02, 2023Observed: 5.34 ft at 10:45PM Feb 02, 2023Observed: 5.34 ft at 11:00PM Feb 02, 2023Observed: 5.35 ft at 11:15PM Feb 02, 2023Observed: 5.36 ft at 11:30PM Feb 02, 2023Observed: 5.37 ft at 11:45PM Feb 02, 2023Observed: 5.37 ft at 12:00AM Feb 03, 2023Observed: 5.38 ft at 12:15AM Feb 03, 2023Observed: 5.38 ft at 12:30AM Feb 03, 2023Observed: 5.39 ft at 12:45AM Feb 03, 2023Observed: 5.39 ft at 1:00AM Feb 03, 2023Observed: 5.4 ft at 1:15AM Feb 03, 2023Observed: 5.4 ft at 1:30AM Feb 03, 2023Observed: 5.4 ft at 1:45AM Feb 03, 2023Observed: 5.4 ft at 2:00AM Feb 03, 2023Observed: 5.4 ft at 2:15AM Feb 03, 2023Highest Observation: 5.41 ft at 2:30AM Feb 03, 2023Observed: 5.4 ft at 2:45AM Feb 03, 2023Observed: 5.4 ft at 3:00AM Feb 03, 2023Highest Observation: 5.41 ft at 3:15AM Feb 03, 2023Highest Observation: 5.41 ft at 3:30AM Feb 03, 2023Highest Observation: 5.41 ft at 3:45AM Feb 03, 2023Highest Observation: 5.41 ft at 3:46AM Feb 03, 2023Observed: 5.4 ft at 4:00AM Feb 03, 2023Observed: 5.4 ft at 4:15AM Feb 03, 2023Highest Observation: 5.41 ft at 4:30AM Feb 03, 2023Highest Observation: 5.41 ft at 4:45AM Feb 03, 2023Highest Observation: 5.41 ft at 5:00AM Feb 03, 2023Highest Observation: 5.41 ft at 5:15AM Feb 03, 2023Highest Observation: 5.41 ft at 5:30AM Feb 03, 2023Highest Observation: 5.41 ft at 5:45AM Feb 03, 2023Highest Observation: 5.41 ft at 6:00AM Feb 03, 2023Highest Observation: 5.41 ft at 6:15AM Feb 03, 2023Highest Observation: 5.41 ft at 6:30AM Feb 03, 2023Highest Observation: 5.41 ft at 6:45AM Feb 03, 2023Highest Observation: 5.41 ft at 7:00AM Feb 03, 2023Observed: 5.4 ft at 7:15AM Feb 03, 2023Highest Observation: 5.41 ft at 7:30AM Feb 03, 2023Observed: 5.4 ft at 7:45AM Feb 03, 2023Observed: 5.4 ft at 8:00AM Feb 03, 2023Observed: 5.39 ft at 8:15AM Feb 03, 2023Observed: 5.39 ft at 8:30AM Feb 03, 2023Observed: 5.39 ft at 8:45AM Feb 03, 2023Observed: 5.39 ft at 9:00AM Feb 03, 2023Observed: 5.39 ft at 9:15AM Feb 03, 2023Observed: 5.39 ft at 9:30AM Feb 03, 2023Observed: 5.39 ft at 9:45AM Feb 03, 2023Observed: 5.39 ft at 10:00AM Feb 03, 2023Observed: 5.4 ft at 10:15AM Feb 03, 2023Observed: 5.39 ft at 10:30AM Feb 03, 2023Observed: 5.39 ft at 10:45AM Feb 03, 2023Observed: 5.39 ft at 11:00AM Feb 03, 2023Observed: 5.39 ft at 11:15AM Feb 03, 2023Observed: 5.39 ft at 11:30AM Feb 03, 2023Observed: 5.39 ft at 11:45AM Feb 03, 2023Observed: 5.39 ft at 11:46AM Feb 03, 2023Observed: 5.39 ft at 12:00PM Feb 03, 2023Observed: 5.38 ft at 12:15PM Feb 03, 2023Observed: 5.38 ft at 12:30PM Feb 03, 2023Observed: 5.38 ft at 12:45PM Feb 03, 2023Observed: 5.38 ft at 1:00PM Feb 03, 2023Observed: 5.37 ft at 1:15PM Feb 03, 2023Observed: 5.37 ft at 1:30PM Feb 03, 2023Observed: 5.37 ft at 1:45PM Feb 03, 2023Observed: 5.38 ft at 2:00PM Feb 03, 2023Observed: 5.37 ft at 2:15PM Feb 03, 2023Observed: 5.37 ft at 2:30PM Feb 03, 2023Observed: 5.37 ft at 2:45PM Feb 03, 2023Observed: 5.37 ft at 3:00PM Feb 03, 2023Observed: 5.37 ft at 3:15PM Feb 03, 2023Observed: 5.37 ft at 3:30PM Feb 03, 2023Observed: 5.37 ft at 3:45PM Feb 03, 2023Observed: 5.36 ft at 4:00PM Feb 03, 2023Observed: 5.37 ft at 4:15PM Feb 03, 2023Observed: 5.37 ft at 4:30PM Feb 03, 2023Observed: 5.37 ft at 4:45PM Feb 03, 2023Observed: 5.37 ft at 5:00PM Feb 03, 2023Observed: 5.37 ft at 5:15PM Feb 03, 2023Observed: 5.36 ft at 5:30PM Feb 03, 2023Observed: 5.36 ft at 5:45PM Feb 03, 2023Observed: 5.36 ft at 6:00PM Feb 03, 2023Observed: 5.36 ft at 6:15PM Feb 03, 2023Observed: 5.36 ft at 6:30PM Feb 03, 2023Observed: 5.36 ft at 6:45PM Feb 03, 2023Observed: 5.36 ft at 7:00PM Feb 03, 2023Observed: 5.36 ft at 7:15PM Feb 03, 2023Observed: 5.36 ft at 7:30PM Feb 03, 2023Observed: 5.36 ft at 7:45PM Feb 03, 2023Observed: 5.36 ft at 7:46PM Feb 03, 2023Observed: 5.35 ft at 8:00PM Feb 03, 2023Observed: 5.35 ft at 8:15PM Feb 03, 2023Observed: 5.35 ft at 8:30PM Feb 03, 2023Observed: 5.35 ft at 8:45PM Feb 03, 2023Observed: 5.35 ft at 9:00PM Feb 03, 2023Observed: 5.35 ft at 9:15PM Feb 03, 2023Observed: 5.34 ft at 9:30PM Feb 03, 2023Observed: 5.34 ft at 9:45PM Feb 03, 2023Observed: 5.34 ft at 10:00PM Feb 03, 2023Observed: 5.34 ft at 10:15PM Feb 03, 2023Observed: 5.34 ft at 10:30PM Feb 03, 2023Observed: 5.34 ft at 10:45PM Feb 03, 2023Observed: 5.34 ft at 11:00PM Feb 03, 2023Observed: 5.34 ft at 11:15PM Feb 03, 2023Observed: 5.33 ft at 11:30PM Feb 03, 2023Observed: 5.33 ft at 11:45PM Feb 03, 2023Observed: 5.33 ft at 12:00AM Feb 04, 2023Observed: 5.33 ft at 12:15AM Feb 04, 2023Observed: 5.33 ft at 12:30AM Feb 04, 2023Observed: 5.32 ft at 12:45AM Feb 04, 2023Observed: 5.32 ft at 1:00AM Feb 04, 2023Observed: 5.32 ft at 1:15AM Feb 04, 2023Observed: 5.32 ft at 1:30AM Feb 04, 2023Observed: 5.31 ft at 1:45AM Feb 04, 2023Observed: 5.31 ft at 2:00AM Feb 04, 2023Observed: 5.31 ft at 2:15AM Feb 04, 2023Observed: 5.3 ft at 2:30AM Feb 04, 2023Observed: 5.3 ft at 2:45AM Feb 04, 2023Observed: 5.3 ft at 3:00AM Feb 04, 2023Observed: 5.3 ft at 3:15AM Feb 04, 2023Observed: 5.3 ft at 3:30AM Feb 04, 2023Observed: 5.29 ft at 3:45AM Feb 04, 2023Observed: 5.29 ft at 4:00AM Feb 04, 2023Observed: 5.29 ft at 4:01AM Feb 04, 2023Observed: 5.29 ft at 4:15AM Feb 04, 2023Observed: 5.29 ft at 4:30AM Feb 04, 2023Observed: 5.28 ft at 4:45AM Feb 04, 2023Observed: 5.28 ft at 5:00AM Feb 04, 2023Observed: 5.28 ft at 5:15AM Feb 04, 2023Observed: 5.28 ft at 5:30AM Feb 04, 2023Observed: 5.28 ft at 5:45AM Feb 04, 2023Observed: 5.28 ft at 6:00AM Feb 04, 2023Observed: 5.28 ft at 6:15AM Feb 04, 2023Observed: 5.27 ft at 6:30AM Feb 04, 2023Observed: 5.27 ft at 6:45AM Feb 04, 2023Observed: 5.27 ft at 7:00AM Feb 04, 2023Observed: 5.27 ft at 7:15AM Feb 04, 2023Observed: 5.26 ft at 7:30AM Feb 04, 2023Observed: 5.26 ft at 7:45AM Feb 04, 2023Observed: 5.26 ft at 8:00AM Feb 04, 2023Observed: 5.26 ft at 8:15AM Feb 04, 2023Observed: 5.25 ft at 8:30AM Feb 04, 2023Observed: 5.25 ft at 8:45AM Feb 04, 2023Observed: 5.25 ft at 9:00AM Feb 04, 2023Observed: 5.25 ft at 9:15AM Feb 04, 2023Observed: 5.24 ft at 9:30AM Feb 04, 2023Observed: 5.24 ft at 9:45AM Feb 04, 2023Observed: 5.24 ft at 10:00AM Feb 04, 2023Observed: 5.24 ft at 10:15AM Feb 04, 2023Observed: 5.24 ft at 10:30AM Feb 04, 2023Observed: 5.23 ft at 10:45AM Feb 04, 2023Observed: 5.23 ft at 11:00AM Feb 04, 2023Observed: 5.22 ft at 11:15AM Feb 04, 2023Observed: 5.23 ft at 11:30AM Feb 04, 2023Observed: 5.22 ft at 11:45AM Feb 04, 2023Observed: 5.22 ft at 12:00PM Feb 04, 2023Observed: 5.22 ft at 12:01PM Feb 04, 2023Observed: 5.22 ft at 12:15PM Feb 04, 2023Observed: 5.22 ft at 12:30PM Feb 04, 2023Observed: 5.22 ft at 12:45PM Feb 04, 2023Observed: 5.21 ft at 1:00PM Feb 04, 2023Observed: 5.21 ft at 1:15PM Feb 04, 2023Observed: 5.21 ft at 1:30PM Feb 04, 2023Observed: 5.2 ft at 1:45PM Feb 04, 2023Observed: 5.2 ft at 2:00PM Feb 04, 2023Observed: 5.2 ft at 2:15PM Feb 04, 2023Observed: 5.2 ft at 2:30PM Feb 04, 2023Observed: 5.2 ft at 2:45PM Feb 04, 2023Observed: 5.19 ft at 3:00PM Feb 04, 2023Observed: 5.19 ft at 3:15PM Feb 04, 2023Highest Forecast: 5.1 ft 7:00PM Feb 04, 2023Highest Forecast: 5.1 ft 1:00AM Feb 05, 2023Forecast: 4.9 ft 7:00AM Feb 05, 2023Forecast: 4.8 ft 1:00PM Feb 05, 2023Forecast: 4.8 ft 7:00PM Feb 05, 2023Forecast: 4.8 ft 1:00AM Feb 06, 2023Forecast: 4.8 ft 7:00AM Feb 06, 2023Forecast: 4.8 ft 1:00PM Feb 06, 2023Forecast: 4.8 ft 7:00PM Feb 06, 2023Forecast: 4.8 ft 1:00AM Feb 07, 2023Forecast: 4.8 ft 7:00AM Feb 07, 2023USGS--Water Resources of the United StatesHNKM2(plotting HGIRG) Graph Created (4:11PM Feb 4, 2023)ObservedForecast (issued 8:44AM Feb 4)Latest observed value: 5.19 ft at 3:15 PM EST 4-Feb-2023. Flood Stage is 25 ft
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Tabular Data (UTC)
Tabular Data (EST)
XML Data
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Datum: Not Available
Metadata
NOTE: Stage may be affected by ice.

NOTE: Forecasts for the Potomac River at Hancock are issued routinely year-round.

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Upstream Gauge - at Paw Paw Upstream Gauge Downstream Gauge Downstream Gauge - at Dam Number Five above Williamsport
Flood Categories (in feet)
Major Flood Stage: 35
Moderate Flood Stage: 33
Flood Stage: 25
Action Stage: 21
Low Stage (in feet): -9999

Historic Crests
(1) 47.60 ft on 03/18/1936
(2) 41.20 ft on 11/06/1985
(3) 40.00 ft on 06/01/1889
(4) 36.63 ft on 10/16/1942
(5) 36.26 ft on 01/20/1996
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 23.57 ft on 12/16/2018
(2) 26.38 ft on 06/04/2018
(3) 21.33 ft on 05/17/2014
(4) 25.41 ft on 05/19/2011
(5) 25.94 ft on 03/14/2010
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 2.00 ft on 10/04/1932
(2) 2.12 ft on 09/12/1966
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
56 Water approaches the highest point on Main Street.
46 Water floods the railroad depot.
45 Floodwater isolates the town of Hancock.
40 Water floods 25 to 30 homes along the West Virginia side of the river just downstream from Hancock, and at least another 20 to 30 in Hancock itself.
35 Water inundates 20 to 30 homes and 5 or more businesses in the west end of Hancock.
33 Water floods low spots on East Main Street in Hancock.
31 Water begins to flood low spots of West Main Street in Hancock.
30 Water begins to inundate homes and business in Hancock. Water covers the road to the maintenance shop for the National Park Service near Hancock. The west end of the Potomac Airpark runway begins to flood.
28 Water begins to inundate some yards on the west end of Hancock. Water also begins to collect on the west end of the CSX Railyard on the West Virginia side.
25 Water may begin to inundate low points of the CSX Railroad tracks on the West Virginia side of the river due to backwater. Additionally, access to Potomac Airpark may be restricted due to backwater. Water reaches the top of the Hancock boat ramp and begins to spill over into the adjacent parking lot.
24 Water begins to overflow into low lying areas.
21 The boat ramp at Four Locks is covered by water. Half the parking lot there is also covered.
7.5 The river is at danger level for boaters as defined by the State of Maryland. At these levels, conditions are extremely hazardous.
3.5 The river reaches caution level for boaters as defined by the State of Maryland. Fast moving water and changing currents can be expected.
About This Location Collapse

Latitude: 39.697500° N, Longitude: 78.177778° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 25 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 29 383.68 ft 413.68 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) 10 Day (NAEFS) 10 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.

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Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
(Baltimore/Washington) Sterling Weather Forecast Office
43858 Weather Service Rd.
Sterling, VA 20166
(703) 996-2200
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Page last modified: 2-Nov-2020 7:30 PM
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