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Hydrograph River at a Glance Download
Potomac River near Washington DC (Little Falls) Stage (ft)Flow (kcfs)Observed: 3.2 ft at 7:15AM Dec 04, 2022Observed: 3.2 ft at 7:30AM Dec 04, 2022Observed: 3.2 ft at 7:45AM Dec 04, 2022Observed: 3.2 ft at 8:00AM Dec 04, 2022Observed: 3.19 ft at 8:15AM Dec 04, 2022Observed: 3.2 ft at 8:30AM Dec 04, 2022Observed: 3.2 ft at 8:45AM Dec 04, 2022Observed: 3.2 ft at 9:00AM Dec 04, 2022Observed: 3.2 ft at 9:15AM Dec 04, 2022Observed: 3.19 ft at 9:30AM Dec 04, 2022Observed: 3.19 ft at 9:45AM Dec 04, 2022Observed: 3.19 ft at 10:00AM Dec 04, 2022Observed: 3.19 ft at 10:15AM Dec 04, 2022Observed: 3.19 ft at 10:30AM Dec 04, 2022Observed: 3.18 ft at 10:45AM Dec 04, 2022Observed: 3.19 ft at 11:00AM Dec 04, 2022Observed: 3.19 ft at 11:15AM Dec 04, 2022Observed: 3.18 ft at 11:30AM Dec 04, 2022Observed: 3.19 ft at 11:45AM Dec 04, 2022Observed: 3.19 ft at 12:00PM Dec 04, 2022Observed: 3.19 ft at 12:15PM Dec 04, 2022Observed: 3.19 ft at 12:30PM Dec 04, 2022Observed: 3.19 ft at 12:45PM Dec 04, 2022Observed: 3.19 ft at 1:00PM Dec 04, 2022Observed: 3.18 ft at 1:15PM Dec 04, 2022Observed: 3.19 ft at 1:30PM Dec 04, 2022Observed: 3.18 ft at 1:45PM Dec 04, 2022Observed: 3.18 ft at 2:00PM Dec 04, 2022Observed: 3.19 ft at 2:15PM Dec 04, 2022Observed: 3.19 ft at 2:30PM Dec 04, 2022Observed: 3.19 ft at 2:45PM Dec 04, 2022Observed: 3.19 ft at 3:00PM Dec 04, 2022Observed: 3.19 ft at 3:15PM Dec 04, 2022Observed: 3.19 ft at 3:30PM Dec 04, 2022Observed: 3.19 ft at 3:45PM Dec 04, 2022Observed: 3.19 ft at 4:00PM Dec 04, 2022Observed: 3.19 ft at 4:15PM Dec 04, 2022Observed: 3.19 ft at 4:30PM Dec 04, 2022Observed: 3.19 ft at 4:45PM Dec 04, 2022Observed: 3.19 ft at 5:00PM Dec 04, 2022Observed: 3.19 ft at 5:15PM Dec 04, 2022Observed: 3.19 ft at 5:30PM Dec 04, 2022Observed: 3.19 ft at 5:45PM Dec 04, 2022Observed: 3.19 ft at 6:00PM Dec 04, 2022Observed: 3.19 ft at 6:15PM Dec 04, 2022Observed: 3.19 ft at 6:30PM Dec 04, 2022Observed: 3.19 ft at 6:45PM Dec 04, 2022Observed: 3.19 ft at 7:00PM Dec 04, 2022Observed: 3.2 ft at 7:15PM Dec 04, 2022Observed: 3.19 ft at 7:30PM Dec 04, 2022Observed: 3.2 ft at 7:45PM Dec 04, 2022Observed: 3.19 ft at 8:00PM Dec 04, 2022Observed: 3.19 ft at 8:15PM Dec 04, 2022Observed: 3.19 ft at 8:30PM Dec 04, 2022Observed: 3.19 ft at 8:45PM Dec 04, 2022Observed: 3.19 ft at 9:00PM Dec 04, 2022Observed: 3.19 ft at 9:15PM Dec 04, 2022Observed: 3.2 ft at 9:30PM Dec 04, 2022Observed: 3.19 ft at 9:45PM Dec 04, 2022Observed: 3.19 ft at 10:00PM Dec 04, 2022Observed: 3.19 ft at 10:15PM Dec 04, 2022Observed: 3.19 ft at 10:30PM Dec 04, 2022Observed: 3.19 ft at 10:45PM Dec 04, 2022Observed: 3.19 ft at 11:00PM Dec 04, 2022Observed: 3.19 ft at 11:15PM Dec 04, 2022Observed: 3.19 ft at 11:30PM Dec 04, 2022Observed: 3.19 ft at 11:45PM Dec 04, 2022Observed: 3.19 ft at 12:00AM Dec 05, 2022Observed: 3.19 ft at 12:15AM Dec 05, 2022Observed: 3.19 ft at 12:30AM Dec 05, 2022Observed: 3.19 ft at 12:45AM Dec 05, 2022Observed: 3.19 ft at 1:00AM Dec 05, 2022Observed: 3.19 ft at 1:15AM Dec 05, 2022Observed: 3.18 ft at 1:30AM Dec 05, 2022Observed: 3.19 ft at 1:45AM Dec 05, 2022Observed: 3.19 ft at 2:00AM Dec 05, 2022Observed: 3.18 ft at 2:15AM Dec 05, 2022Observed: 3.19 ft at 2:30AM Dec 05, 2022Observed: 3.18 ft at 2:45AM Dec 05, 2022Observed: 3.19 ft at 3:00AM Dec 05, 2022Observed: 3.18 ft at 3:15AM Dec 05, 2022Observed: 3.18 ft at 3:30AM Dec 05, 2022Observed: 3.18 ft at 3:45AM Dec 05, 2022Observed: 3.18 ft at 4:00AM Dec 05, 2022Observed: 3.18 ft at 4:15AM Dec 05, 2022Observed: 3.18 ft at 4:30AM Dec 05, 2022Observed: 3.18 ft at 4:45AM Dec 05, 2022Observed: 3.18 ft at 5:00AM Dec 05, 2022Observed: 3.17 ft at 5:15AM Dec 05, 2022Observed: 3.18 ft at 5:30AM Dec 05, 2022Observed: 3.18 ft at 5:45AM Dec 05, 2022Observed: 3.17 ft at 6:00AM Dec 05, 2022Observed: 3.17 ft at 6:15AM Dec 05, 2022Observed: 3.17 ft at 6:30AM Dec 05, 2022Observed: 3.18 ft at 6:45AM Dec 05, 2022Observed: 3.17 ft at 7:00AM Dec 05, 2022Observed: 3.17 ft at 7:15AM Dec 05, 2022Observed: 3.17 ft at 7:30AM Dec 05, 2022Observed: 3.17 ft at 7:45AM Dec 05, 2022Observed: 3.17 ft at 8:00AM Dec 05, 2022Observed: 3.16 ft at 8:15AM Dec 05, 2022Observed: 3.17 ft at 8:30AM Dec 05, 2022Observed: 3.17 ft at 8:45AM Dec 05, 2022Observed: 3.16 ft at 9:00AM Dec 05, 2022Observed: 3.16 ft at 9:15AM Dec 05, 2022Observed: 3.16 ft at 9:30AM Dec 05, 2022Observed: 3.16 ft at 9:45AM Dec 05, 2022Observed: 3.16 ft at 10:00AM Dec 05, 2022Observed: 3.16 ft at 10:15AM Dec 05, 2022Observed: 3.16 ft at 10:30AM Dec 05, 2022Observed: 3.15 ft at 10:45AM Dec 05, 2022Observed: 3.16 ft at 11:00AM Dec 05, 2022Observed: 3.15 ft at 11:15AM Dec 05, 2022Observed: 3.16 ft at 11:30AM Dec 05, 2022Observed: 3.16 ft at 11:45AM Dec 05, 2022Observed: 3.15 ft at 12:00PM Dec 05, 2022Observed: 3.16 ft at 12:15PM Dec 05, 2022Observed: 3.15 ft at 12:30PM Dec 05, 2022Observed: 3.16 ft at 12:45PM Dec 05, 2022Observed: 3.16 ft at 1:00PM Dec 05, 2022Observed: 3.16 ft at 1:15PM Dec 05, 2022Observed: 3.16 ft at 1:30PM Dec 05, 2022Observed: 3.16 ft at 1:45PM Dec 05, 2022Observed: 3.16 ft at 2:00PM Dec 05, 2022Observed: 3.16 ft at 2:15PM Dec 05, 2022Observed: 3.16 ft at 2:30PM Dec 05, 2022Observed: 3.15 ft at 2:45PM Dec 05, 2022Observed: 3.16 ft at 3:00PM Dec 05, 2022Observed: 3.16 ft at 3:15PM Dec 05, 2022Observed: 3.16 ft at 3:30PM Dec 05, 2022Observed: 3.16 ft at 3:45PM Dec 05, 2022Observed: 3.16 ft at 4:00PM Dec 05, 2022Observed: 3.16 ft at 4:15PM Dec 05, 2022Observed: 3.16 ft at 4:30PM Dec 05, 2022Observed: 3.16 ft at 4:45PM Dec 05, 2022Observed: 3.16 ft at 5:00PM Dec 05, 2022Observed: 3.16 ft at 5:15PM Dec 05, 2022Observed: 3.17 ft at 5:30PM Dec 05, 2022Observed: 3.17 ft at 5:45PM Dec 05, 2022Observed: 3.17 ft at 6:00PM Dec 05, 2022Observed: 3.17 ft at 6:15PM Dec 05, 2022Observed: 3.17 ft at 6:30PM Dec 05, 2022Observed: 3.17 ft at 6:45PM Dec 05, 2022Observed: 3.17 ft at 7:00PM Dec 05, 2022Observed: 3.17 ft at 7:15PM Dec 05, 2022Observed: 3.17 ft at 7:30PM Dec 05, 2022Observed: 3.17 ft at 7:45PM Dec 05, 2022Observed: 3.17 ft at 8:00PM Dec 05, 2022Observed: 3.18 ft at 8:15PM Dec 05, 2022Observed: 3.17 ft at 8:30PM Dec 05, 2022Observed: 3.18 ft at 8:45PM Dec 05, 2022Observed: 3.18 ft at 9:00PM Dec 05, 2022Observed: 3.18 ft at 9:15PM Dec 05, 2022Observed: 3.18 ft at 9:30PM Dec 05, 2022Observed: 3.18 ft at 9:45PM Dec 05, 2022Observed: 3.18 ft at 10:00PM Dec 05, 2022Observed: 3.18 ft at 10:15PM Dec 05, 2022Observed: 3.19 ft at 10:30PM Dec 05, 2022Observed: 3.18 ft at 10:45PM Dec 05, 2022Observed: 3.18 ft at 11:00PM Dec 05, 2022Observed: 3.19 ft at 11:15PM Dec 05, 2022Observed: 3.19 ft at 11:30PM Dec 05, 2022Observed: 3.19 ft at 11:45PM Dec 05, 2022Observed: 3.19 ft at 12:00AM Dec 06, 2022Observed: 3.18 ft at 12:15AM Dec 06, 2022Observed: 3.19 ft at 12:30AM Dec 06, 2022Observed: 3.18 ft at 12:45AM Dec 06, 2022Observed: 3.19 ft at 1:00AM Dec 06, 2022Observed: 3.19 ft at 1:15AM Dec 06, 2022Observed: 3.19 ft at 1:30AM Dec 06, 2022Observed: 3.19 ft at 1:45AM Dec 06, 2022Observed: 3.19 ft at 2:00AM Dec 06, 2022Observed: 3.18 ft at 2:15AM Dec 06, 2022Observed: 3.18 ft at 2:30AM Dec 06, 2022Observed: 3.19 ft at 2:45AM Dec 06, 2022Observed: 3.19 ft at 3:00AM Dec 06, 2022Observed: 3.18 ft at 3:15AM Dec 06, 2022Observed: 3.18 ft at 3:30AM Dec 06, 2022Observed: 3.18 ft at 3:45AM Dec 06, 2022Observed: 3.18 ft at 4:00AM Dec 06, 2022Observed: 3.18 ft at 4:15AM Dec 06, 2022Observed: 3.18 ft at 4:30AM Dec 06, 2022Observed: 3.18 ft at 4:45AM Dec 06, 2022Observed: 3.18 ft at 5:00AM Dec 06, 2022Observed: 3.17 ft at 5:15AM Dec 06, 2022Observed: 3.17 ft at 5:30AM Dec 06, 2022Observed: 3.17 ft at 5:45AM Dec 06, 2022Observed: 3.17 ft at 6:00AM Dec 06, 2022Observed: 3.17 ft at 6:15AM Dec 06, 2022Observed: 3.17 ft at 6:30AM Dec 06, 2022Observed: 3.17 ft at 6:45AM Dec 06, 2022Observed: 3.17 ft at 7:00AM Dec 06, 2022Observed: 3.17 ft at 7:15AM Dec 06, 2022Observed: 3.17 ft at 7:30AM Dec 06, 2022Observed: 3.17 ft at 7:45AM Dec 06, 2022Observed: 3.16 ft at 8:00AM Dec 06, 2022Observed: 3.17 ft at 8:15AM Dec 06, 2022Observed: 3.17 ft at 8:30AM Dec 06, 2022Observed: 3.17 ft at 8:45AM Dec 06, 2022Observed: 3.17 ft at 9:00AM Dec 06, 2022Observed: 3.17 ft at 9:15AM Dec 06, 2022Observed: 3.17 ft at 9:30AM Dec 06, 2022Observed: 3.17 ft at 9:45AM Dec 06, 2022Observed: 3.17 ft at 10:00AM Dec 06, 2022Observed: 3.17 ft at 10:15AM Dec 06, 2022Observed: 3.17 ft at 10:30AM Dec 06, 2022Observed: 3.17 ft at 10:45AM Dec 06, 2022Observed: 3.16 ft at 11:00AM Dec 06, 2022Observed: 3.17 ft at 11:15AM Dec 06, 2022Observed: 3.16 ft at 11:30AM Dec 06, 2022Observed: 3.16 ft at 11:45AM Dec 06, 2022Observed: 3.16 ft at 12:00PM Dec 06, 2022Observed: 3.16 ft at 12:15PM Dec 06, 2022Observed: 3.16 ft at 12:30PM Dec 06, 2022Observed: 3.16 ft at 12:45PM Dec 06, 2022Observed: 3.16 ft at 1:00PM Dec 06, 2022Observed: 3.16 ft at 1:15PM Dec 06, 2022Observed: 3.17 ft at 1:30PM Dec 06, 2022Observed: 3.16 ft at 1:45PM Dec 06, 2022Observed: 3.17 ft at 2:00PM Dec 06, 2022Observed: 3.16 ft at 2:15PM Dec 06, 2022Observed: 3.16 ft at 2:30PM Dec 06, 2022Observed: 3.17 ft at 2:45PM Dec 06, 2022Observed: 3.17 ft at 3:00PM Dec 06, 2022Observed: 3.16 ft at 3:15PM Dec 06, 2022Observed: 3.17 ft at 3:30PM Dec 06, 2022Observed: 3.17 ft at 3:45PM Dec 06, 2022Observed: 3.17 ft at 4:00PM Dec 06, 2022Observed: 3.17 ft at 4:15PM Dec 06, 2022Observed: 3.17 ft at 4:30PM Dec 06, 2022Observed: 3.17 ft at 4:45PM Dec 06, 2022Observed: 3.17 ft at 5:00PM Dec 06, 2022Observed: 3.17 ft at 5:15PM Dec 06, 2022Observed: 3.18 ft at 5:30PM Dec 06, 2022Observed: 3.18 ft at 5:45PM Dec 06, 2022Observed: 3.17 ft at 6:00PM Dec 06, 2022Observed: 3.18 ft at 6:15PM Dec 06, 2022Observed: 3.18 ft at 6:30PM Dec 06, 2022Observed: 3.18 ft at 6:45PM Dec 06, 2022Observed: 3.18 ft at 7:00PM Dec 06, 2022Observed: 3.18 ft at 7:15PM Dec 06, 2022Observed: 3.18 ft at 7:30PM Dec 06, 2022Observed: 3.18 ft at 7:45PM Dec 06, 2022Observed: 3.18 ft at 8:00PM Dec 06, 2022Observed: 3.18 ft at 8:15PM Dec 06, 2022Observed: 3.19 ft at 8:30PM Dec 06, 2022Observed: 3.19 ft at 8:45PM Dec 06, 2022Observed: 3.19 ft at 9:00PM Dec 06, 2022Observed: 3.19 ft at 9:15PM Dec 06, 2022Observed: 3.19 ft at 9:30PM Dec 06, 2022Observed: 3.19 ft at 9:45PM Dec 06, 2022Observed: 3.2 ft at 10:00PM Dec 06, 2022Observed: 3.2 ft at 10:15PM Dec 06, 2022Observed: 3.2 ft at 10:30PM Dec 06, 2022Observed: 3.2 ft at 10:45PM Dec 06, 2022Observed: 3.2 ft at 11:00PM Dec 06, 2022Observed: 3.2 ft at 11:15PM Dec 06, 2022Observed: 3.2 ft at 11:30PM Dec 06, 2022Observed: 3.2 ft at 11:45PM Dec 06, 2022Observed: 3.2 ft at 12:00AM Dec 07, 2022Observed: 3.2 ft at 12:15AM Dec 07, 2022Observed: 3.2 ft at 12:30AM Dec 07, 2022Highest Observation: 3.21 ft at 12:45AM Dec 07, 2022Highest Observation: 3.21 ft at 1:00AM Dec 07, 2022Observed: 3.2 ft at 1:15AM Dec 07, 2022Observed: 3.2 ft at 1:30AM Dec 07, 2022Observed: 3.2 ft at 1:45AM Dec 07, 2022Observed: 3.2 ft at 2:00AM Dec 07, 2022Observed: 3.2 ft at 2:15AM Dec 07, 2022Observed: 3.2 ft at 2:30AM Dec 07, 2022Observed: 3.2 ft at 2:45AM Dec 07, 2022Observed: 3.19 ft at 3:00AM Dec 07, 2022Observed: 3.19 ft at 3:15AM Dec 07, 2022Observed: 3.19 ft at 3:30AM Dec 07, 2022Observed: 3.19 ft at 3:45AM Dec 07, 2022Observed: 3.19 ft at 4:00AM Dec 07, 2022Observed: 3.19 ft at 4:15AM Dec 07, 2022Observed: 3.18 ft at 4:30AM Dec 07, 2022Observed: 3.18 ft at 4:45AM Dec 07, 2022Observed: 3.18 ft at 5:00AM Dec 07, 2022Observed: 3.18 ft at 5:15AM Dec 07, 2022Observed: 3.18 ft at 5:30AM Dec 07, 2022Observed: 3.18 ft at 5:45AM Dec 07, 2022Observed: 3.18 ft at 6:00AM Dec 07, 2022Observed: 3.18 ft at 6:15AM Dec 07, 2022Observed: 3.18 ft at 6:30AM Dec 07, 2022Observed: 3.18 ft at 6:45AM Dec 07, 2022Observed: 3.18 ft at 7:00AM Dec 07, 2022Observed: 3.18 ft at 7:15AM Dec 07, 2022Observed: 3.18 ft at 7:30AM Dec 07, 2022Observed: 3.18 ft at 7:45AM Dec 07, 2022Observed: 3.18 ft at 8:00AM Dec 07, 2022Observed: 3.17 ft at 8:15AM Dec 07, 2022Observed: 3.17 ft at 8:30AM Dec 07, 2022Observed: 3.17 ft at 8:45AM Dec 07, 2022Observed: 3.17 ft at 9:00AM Dec 07, 2022Observed: 3.17 ft at 9:15AM Dec 07, 2022Observed: 3.17 ft at 9:30AM Dec 07, 2022Observed: 3.17 ft at 9:45AM Dec 07, 2022Observed: 3.17 ft at 10:00AM Dec 07, 2022Observed: 3.17 ft at 10:15AM Dec 07, 2022Observed: 3.17 ft at 10:30AM Dec 07, 2022Observed: 3.18 ft at 10:45AM Dec 07, 2022Observed: 3.18 ft at 11:00AM Dec 07, 2022Observed: 3.18 ft at 11:15AM Dec 07, 2022Observed: 3.18 ft at 11:30AM Dec 07, 2022Observed: 3.19 ft at 11:45AM Dec 07, 2022Observed: 3.19 ft at 12:00PM Dec 07, 2022Observed: 3.19 ft at 12:15PM Dec 07, 2022Observed: 3.2 ft at 12:30PM Dec 07, 2022Observed: 3.2 ft at 12:45PM Dec 07, 2022Observed: 3.19 ft at 1:00PM Dec 07, 2022Observed: 3.2 ft at 1:15PM Dec 07, 2022Observed: 3.2 ft at 1:30PM Dec 07, 2022Observed: 3.19 ft at 1:45PM Dec 07, 2022Observed: 3.2 ft at 2:00PM Dec 07, 2022Highest Observation: 3.21 ft at 2:15PM Dec 07, 2022Highest Observation: 3.21 ft at 2:30PM Dec 07, 2022Highest Observation: 3.21 ft at 2:45PM Dec 07, 2022Highest Observation: 3.21 ft at 3:00PM Dec 07, 2022Highest Observation: 3.21 ft at 3:15PM Dec 07, 2022Highest Observation: 3.21 ft at 3:30PM Dec 07, 2022Observed: 3.2 ft at 3:45PM Dec 07, 2022Observed: 3.2 ft at 4:00PM Dec 07, 2022Observed: 3.2 ft at 4:15PM Dec 07, 2022Observed: 3.2 ft at 4:30PM Dec 07, 2022Observed: 3.19 ft at 4:45PM Dec 07, 2022Observed: 3.19 ft at 5:00PM Dec 07, 2022Observed: 3.19 ft at 5:15PM Dec 07, 2022Observed: 3.19 ft at 5:30PM Dec 07, 2022Observed: 3.19 ft at 5:45PM Dec 07, 2022Observed: 3.19 ft at 6:00PM Dec 07, 2022Observed: 3.19 ft at 6:15PM Dec 07, 2022Observed: 3.19 ft at 6:30PM Dec 07, 2022Observed: 3.19 ft at 6:45PM Dec 07, 2022Observed: 3.19 ft at 7:00PM Dec 07, 2022Observed: 3.18 ft at 7:15PM Dec 07, 2022Observed: 3.19 ft at 7:30PM Dec 07, 2022Observed: 3.19 ft at 7:45PM Dec 07, 2022Observed: 3.19 ft at 8:00PM Dec 07, 2022Observed: 3.18 ft at 8:15PM Dec 07, 2022Observed: 3.19 ft at 8:30PM Dec 07, 2022Observed: 3.2 ft at 8:45PM Dec 07, 2022Observed: 3.19 ft at 9:00PM Dec 07, 2022Observed: 3.19 ft at 9:15PM Dec 07, 2022Observed: 3.2 ft at 9:30PM Dec 07, 2022Observed: 3.19 ft at 9:45PM Dec 07, 2022Observed: 3.2 ft at 10:00PM Dec 07, 2022Observed: 3.2 ft at 10:15PM Dec 07, 2022Observed: 3.19 ft at 10:30PM Dec 07, 2022Observed: 3.2 ft at 10:45PM Dec 07, 2022Observed: 3.2 ft at 11:00PM Dec 07, 2022Observed: 3.2 ft at 11:15PM Dec 07, 2022Observed: 3.2 ft at 11:30PM Dec 07, 2022Observed: 3.2 ft at 11:45PM Dec 07, 2022Observed: 3.19 ft at 12:00AM Dec 08, 2022Observed: 3.2 ft at 12:15AM Dec 08, 2022Observed: 3.2 ft at 12:30AM Dec 08, 2022Observed: 3.19 ft at 12:45AM Dec 08, 2022Observed: 3.2 ft at 1:00AM Dec 08, 2022Observed: 3.2 ft at 1:15AM Dec 08, 2022Observed: 3.19 ft at 1:30AM Dec 08, 2022Observed: 3.19 ft at 1:45AM Dec 08, 2022Observed: 3.19 ft at 2:00AM Dec 08, 2022Observed: 3.19 ft at 2:15AM Dec 08, 2022Observed: 3.19 ft at 2:30AM Dec 08, 2022Observed: 3.19 ft at 2:45AM Dec 08, 2022Observed: 3.19 ft at 3:00AM Dec 08, 2022Observed: 3.18 ft at 3:15AM Dec 08, 2022Observed: 3.19 ft at 3:30AM Dec 08, 2022Observed: 3.19 ft at 3:45AM Dec 08, 2022Observed: 3.18 ft at 4:00AM Dec 08, 2022Observed: 3.18 ft at 4:15AM Dec 08, 2022Observed: 3.18 ft at 4:30AM Dec 08, 2022Observed: 3.18 ft at 4:45AM Dec 08, 2022Observed: 3.18 ft at 5:00AM Dec 08, 2022Observed: 3.18 ft at 5:15AM Dec 08, 2022Observed: 3.18 ft at 5:30AM Dec 08, 2022Observed: 3.18 ft at 5:45AM Dec 08, 2022Observed: 3.18 ft at 6:00AM Dec 08, 2022Observed: 3.18 ft at 6:15AM Dec 08, 2022Observed: 3.17 ft at 6:30AM Dec 08, 2022Observed: 3.17 ft at 6:45AM Dec 08, 2022Observed: 3.17 ft at 7:00AM Dec 08, 2022Observed: 3.17 ft at 7:15AM Dec 08, 2022Observed: 3.17 ft at 7:30AM Dec 08, 2022Observed: 3.17 ft at 7:45AM Dec 08, 2022Observed: 3.17 ft at 8:00AM Dec 08, 2022Observed: 3.17 ft at 8:15AM Dec 08, 2022Observed: 3.17 ft at 8:30AM Dec 08, 2022Observed: 3.17 ft at 8:45AM Dec 08, 2022Observed: 3.17 ft at 9:00AM Dec 08, 2022Observed: 3.16 ft at 9:15AM Dec 08, 2022Observed: 3.16 ft at 9:30AM Dec 08, 2022Observed: 3.16 ft at 9:45AM Dec 08, 2022Observed: 3.16 ft at 10:00AM Dec 08, 2022Observed: 3.16 ft at 10:15AM Dec 08, 2022Observed: 3.16 ft at 10:30AM Dec 08, 2022Observed: 3.16 ft at 10:45AM Dec 08, 2022Observed: 3.17 ft at 11:00AM Dec 08, 2022Observed: 3.16 ft at 11:15AM Dec 08, 2022Observed: 3.16 ft at 11:30AM Dec 08, 2022Observed: 3.16 ft at 11:45AM Dec 08, 2022Observed: 3.16 ft at 12:00PM Dec 08, 2022Observed: 3.16 ft at 12:15PM Dec 08, 2022Observed: 3.16 ft at 12:30PM Dec 08, 2022Observed: 3.16 ft at 12:45PM Dec 08, 2022Observed: 3.16 ft at 1:00PM Dec 08, 2022Observed: 3.16 ft at 1:15PM Dec 08, 2022Observed: 3.17 ft at 1:30PM Dec 08, 2022Observed: 3.16 ft at 1:45PM Dec 08, 2022Observed: 3.17 ft at 2:00PM Dec 08, 2022Observed: 3.17 ft at 2:15PM Dec 08, 2022Observed: 3.17 ft at 2:30PM Dec 08, 2022Observed: 3.17 ft at 2:45PM Dec 08, 2022Observed: 3.17 ft at 3:00PM Dec 08, 2022Observed: 3.17 ft at 3:15PM Dec 08, 2022Observed: 3.17 ft at 3:30PM Dec 08, 2022Observed: 3.17 ft at 3:45PM Dec 08, 2022Observed: 3.17 ft at 4:00PM Dec 08, 2022Observed: 3.18 ft at 4:15PM Dec 08, 2022Observed: 3.18 ft at 4:30PM Dec 08, 2022Observed: 3.18 ft at 4:45PM Dec 08, 2022Observed: 3.18 ft at 5:00PM Dec 08, 2022Observed: 3.18 ft at 5:15PM Dec 08, 2022Observed: 3.18 ft at 5:30PM Dec 08, 2022Observed: 3.18 ft at 5:45PM Dec 08, 2022Observed: 3.18 ft at 6:00PM Dec 08, 2022Observed: 3.18 ft at 6:15PM Dec 08, 2022Observed: 3.18 ft at 6:30PM Dec 08, 2022Observed: 3.19 ft at 6:45PM Dec 08, 2022Observed: 3.19 ft at 7:00PM Dec 08, 2022Observed: 3.18 ft at 7:15PM Dec 08, 2022Observed: 3.19 ft at 7:30PM Dec 08, 2022Observed: 3.19 ft at 7:45PM Dec 08, 2022Observed: 3.19 ft at 8:00PM Dec 08, 2022Observed: 3.19 ft at 8:15PM Dec 08, 2022Observed: 3.19 ft at 8:30PM Dec 08, 2022Observed: 3.19 ft at 8:45PM Dec 08, 2022Observed: 3.19 ft at 9:00PM Dec 08, 2022Observed: 3.19 ft at 9:15PM Dec 08, 2022Observed: 3.19 ft at 9:30PM Dec 08, 2022Observed: 3.19 ft at 9:45PM Dec 08, 2022Observed: 3.19 ft at 10:00PM Dec 08, 2022Observed: 3.19 ft at 10:15PM Dec 08, 2022Observed: 3.19 ft at 10:30PM Dec 08, 2022Observed: 3.19 ft at 10:45PM Dec 08, 2022Observed: 3.19 ft at 11:00PM Dec 08, 2022Observed: 3.19 ft at 11:15PM Dec 08, 2022Observed: 3.19 ft at 11:30PM Dec 08, 2022Observed: 3.19 ft at 11:45PM Dec 08, 2022Observed: 3.2 ft at 12:00AM Dec 09, 2022Observed: 3.19 ft at 12:15AM Dec 09, 2022Observed: 3.19 ft at 12:30AM Dec 09, 2022Observed: 3.19 ft at 12:45AM Dec 09, 2022Observed: 3.19 ft at 1:00AM Dec 09, 2022Observed: 3.19 ft at 1:15AM Dec 09, 2022Observed: 3.19 ft at 1:30AM Dec 09, 2022Observed: 3.18 ft at 1:45AM Dec 09, 2022Observed: 3.19 ft at 2:00AM Dec 09, 2022Observed: 3.19 ft at 2:15AM Dec 09, 2022Observed: 3.18 ft at 2:30AM Dec 09, 2022Observed: 3.18 ft at 2:45AM Dec 09, 2022Observed: 3.18 ft at 3:00AM Dec 09, 2022Observed: 3.18 ft at 3:15AM Dec 09, 2022Observed: 3.18 ft at 3:30AM Dec 09, 2022Observed: 3.18 ft at 3:45AM Dec 09, 2022Observed: 3.17 ft at 4:00AM Dec 09, 2022Observed: 3.17 ft at 4:15AM Dec 09, 2022Observed: 3.17 ft at 4:30AM Dec 09, 2022Observed: 3.17 ft at 4:45AM Dec 09, 2022Observed: 3.17 ft at 5:00AM Dec 09, 2022Observed: 3.17 ft at 5:15AM Dec 09, 2022Observed: 3.17 ft at 5:30AM Dec 09, 2022Observed: 3.16 ft at 5:45AM Dec 09, 2022Forecast: 3.1 ft 1:00PM Dec 09, 2022Forecast: 3.1 ft 7:00PM Dec 09, 2022Highest Forecast: 3.2 ft 1:00AM Dec 10, 2022Highest Forecast: 3.2 ft 7:00AM Dec 10, 2022Highest Forecast: 3.2 ft 1:00PM Dec 10, 2022Highest Forecast: 3.2 ft 7:00PM Dec 10, 2022Highest Forecast: 3.2 ft 1:00AM Dec 11, 2022Highest Forecast: 3.2 ft 7:00AM Dec 11, 2022USGS--Water Resources of the United StatesBRKM2(plotting HGIRG) Graph Created (7:11AM Dec 9, 2022)ObservedForecast (issued 9:35AM Dec 8)Latest observed value: 3.16 ft at 5:45 AM EST 9-Dec-2022. Flood Stage is 10 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EST)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Stage may be affected by ice.

NOTE: Forecasts for the Potomac River near Washington DC (Little Falls) are issued routinely year-round.

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Upstream Gauge - at Edwards Ferry Upstream Gauge Downstream Gauge Downstream Gauge - at Georgetown / Wisconsin Ave
Flood Categories (in feet)
Major Flood Stage: 14
Moderate Flood Stage: 12
Flood Stage: 10
Action Stage: 5
Low Stage (in feet): -9999

Historic Crests
(1) 28.10 ft on 03/19/1936
(2) 26.88 ft on 10/17/1942
(3) 23.30 ft on 04/28/1937
(4) 22.03 ft on 06/24/1972
(5) 19.29 ft on 01/21/1996
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 10.16 ft on 05/09/2022 (P)
(2) 11.56 ft on 12/17/2018
(3) 11.01 ft on 09/29/2018
(4) 10.85 ft on 09/11/2018
(5) 12.38 ft on 06/05/2018
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

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

Zoom Level:14
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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
17 Water overflows the overlooks at Great Falls National Park and approaches the lower level of the visitors center. Most of the C&O Canal towpath downstream of Pennyfield is flooded. There is approximately a foot of water in the clubhouse on Sycamore Island.
16 Water reaches the clubhouse on Sycamore Island.
15 Most of the C&O Canal towpath from Pennyfield downstream is flooded.
14 Significant portions of the C&O Canal towpath are flooded. The Blockhouse Point Park is flooded. Water reaches the retaining wall at Overlook 1 at Great Falls National Park but does not overtop it.
12 The C&O Canal overflows at the Great Falls Tavern. Water covers the towpath in many areas.
11.5 Water covers the towpath in multiple spots between the Washington Aqueduct Dam and Pennyfield Lock, mileposts 15 to 19 on the C&O Canal.
11 Water covers the towpath between Swains Lock and Pennyfield Lock, mileposts 17 to 19 on the C&O Canal.
10 Water begins to overflow the banks into low lying areas on the Maryland side of the river near Little Falls. Water begins to enter the canoe shed at Sycamore Island.
9 Several trails on both sides of the river between Great Falls and the Chain Bridge are flooded and will be closed.
7 Upper portions of the River Trail at Great Falls National Park begin to flood and will be closed.
5.5 Water reaches the top of the ferry landing for Sycamore Island. Ferry service to the island will likely be suspended.
5 Portions of the Potomac Heritage Trail begin to flood. Water begins to affect portions of the Billy Goat Trail between Great Falls and Carderock. These trails will be closed.
4.5 The river reaches danger level for boaters, as defined by the State of Maryland. Conditions for boating will be extremely hazardous.
3.5 The river reaches caution level for boaters, as defined by the State of Maryland. Fast moving water and changing currents will be experienced.
About This Location Collapse

Latitude: 38.949722° N, Longitude: 77.127778° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 10 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 37.95 ft 47.95 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.

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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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