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Hydrograph River at a Glance Download
Potomac River near Washington DC (Little Falls) Stage (ft)Flow (kcfs)Observed: 3.43 ft at 3:30PM Feb 25, 2015Observed: 3.44 ft at 3:45PM Feb 25, 2015Observed: 3.44 ft at 4:00PM Feb 25, 2015Observed: 3.45 ft at 4:15PM Feb 25, 2015Observed: 3.45 ft at 4:30PM Feb 25, 2015Observed: 3.46 ft at 4:45PM Feb 25, 2015Observed: 3.47 ft at 5:00PM Feb 25, 2015Observed: 3.46 ft at 5:15PM Feb 25, 2015Observed: 3.47 ft at 5:30PM Feb 25, 2015Observed: 3.47 ft at 5:45PM Feb 25, 2015Observed: 3.46 ft at 6:00PM Feb 25, 2015Observed: 3.47 ft at 6:15PM Feb 25, 2015Observed: 3.47 ft at 6:30PM Feb 25, 2015Observed: 3.46 ft at 6:45PM Feb 25, 2015Observed: 3.46 ft at 7:00PM Feb 25, 2015Observed: 3.46 ft at 7:15PM Feb 25, 2015Observed: 3.45 ft at 7:30PM Feb 25, 2015Observed: 3.45 ft at 7:45PM Feb 25, 2015Observed: 3.44 ft at 8:00PM Feb 25, 2015Observed: 3.44 ft at 8:15PM Feb 25, 2015Observed: 3.44 ft at 8:30PM Feb 25, 2015Observed: 3.44 ft at 8:45PM Feb 25, 2015Observed: 3.44 ft at 9:00PM Feb 25, 2015Observed: 3.44 ft at 9:15PM Feb 25, 2015Observed: 3.43 ft at 9:30PM Feb 25, 2015Observed: 3.43 ft at 9:45PM Feb 25, 2015Observed: 3.43 ft at 10:00PM Feb 25, 2015Observed: 3.43 ft at 10:15PM Feb 25, 2015Observed: 3.42 ft at 10:30PM Feb 25, 2015Observed: 3.42 ft at 10:45PM Feb 25, 2015Observed: 3.42 ft at 11:00PM Feb 25, 2015Observed: 3.42 ft at 11:15PM Feb 25, 2015Observed: 3.42 ft at 11:30PM Feb 25, 2015Observed: 3.41 ft at 11:45PM Feb 25, 2015Observed: 3.41 ft at 12:00AM Feb 26, 2015Observed: 3.42 ft at 12:15AM Feb 26, 2015Observed: 3.42 ft at 12:30AM Feb 26, 2015Observed: 3.41 ft at 12:45AM Feb 26, 2015Observed: 3.41 ft at 1:00AM Feb 26, 2015Observed: 3.41 ft at 1:15AM Feb 26, 2015Observed: 3.41 ft at 1:30AM Feb 26, 2015Observed: 3.42 ft at 1:45AM Feb 26, 2015Observed: 3.41 ft at 2:00AM Feb 26, 2015Observed: 3.41 ft at 2:15AM Feb 26, 2015Observed: 3.41 ft at 2:30AM Feb 26, 2015Observed: 3.41 ft at 2:45AM Feb 26, 2015Observed: 3.41 ft at 3:00AM Feb 26, 2015Observed: 3.42 ft at 3:15AM Feb 26, 2015Observed: 3.41 ft at 3:30AM Feb 26, 2015Observed: 3.42 ft at 3:45AM Feb 26, 2015Observed: 3.42 ft at 4:00AM Feb 26, 2015Observed: 3.42 ft at 4:15AM Feb 26, 2015Observed: 3.42 ft at 4:30AM Feb 26, 2015Observed: 3.42 ft at 4:45AM Feb 26, 2015Observed: 3.42 ft at 5:00AM Feb 26, 2015Observed: 3.43 ft at 5:15AM Feb 26, 2015Observed: 3.43 ft at 5:30AM Feb 26, 2015Observed: 3.43 ft at 5:45AM Feb 26, 2015Observed: 3.43 ft at 6:00AM Feb 26, 2015Observed: 3.44 ft at 6:15AM Feb 26, 2015Observed: 3.44 ft at 6:30AM Feb 26, 2015Observed: 3.45 ft at 6:45AM Feb 26, 2015Observed: 3.44 ft at 7:00AM Feb 26, 2015Observed: 3.44 ft at 7:15AM Feb 26, 2015Observed: 3.46 ft at 7:30AM Feb 26, 2015Observed: 3.45 ft at 7:45AM Feb 26, 2015Observed: 3.46 ft at 8:00AM Feb 26, 2015Observed: 3.45 ft at 8:15AM Feb 26, 2015Observed: 3.46 ft at 8:30AM Feb 26, 2015Observed: 3.47 ft at 8:45AM Feb 26, 2015Observed: 3.46 ft at 9:00AM Feb 26, 2015Observed: 3.48 ft at 9:15AM Feb 26, 2015Observed: 3.47 ft at 9:30AM Feb 26, 2015Observed: 3.48 ft at 9:45AM Feb 26, 2015Observed: 3.48 ft at 10:00AM Feb 26, 2015Observed: 3.48 ft at 10:15AM Feb 26, 2015Observed: 3.48 ft at 10:30AM Feb 26, 2015Observed: 3.48 ft at 10:45AM Feb 26, 2015Observed: 3.49 ft at 11:00AM Feb 26, 2015Observed: 3.48 ft at 11:15AM Feb 26, 2015Observed: 3.5 ft at 11:30AM Feb 26, 2015Observed: 3.49 ft at 11:45AM Feb 26, 2015Observed: 3.49 ft at 12:00PM Feb 26, 2015Observed: 3.49 ft at 12:15PM Feb 26, 2015Observed: 3.49 ft at 12:30PM Feb 26, 2015Observed: 3.5 ft at 12:45PM Feb 26, 2015Observed: 3.49 ft at 1:00PM Feb 26, 2015Observed: 3.49 ft at 1:15PM Feb 26, 2015Observed: 3.49 ft at 1:30PM Feb 26, 2015Observed: 3.5 ft at 1:45PM Feb 26, 2015Observed: 3.49 ft at 2:00PM Feb 26, 2015Observed: 3.5 ft at 2:15PM Feb 26, 2015Observed: 3.49 ft at 2:30PM Feb 26, 2015Observed: 3.5 ft at 2:45PM Feb 26, 2015Observed: 3.5 ft at 3:00PM Feb 26, 2015Observed: 3.5 ft at 3:15PM Feb 26, 2015Highest Observation: 3.51 ft at 3:30PM Feb 26, 2015Observed: 3.5 ft at 3:45PM Feb 26, 2015Observed: 3.5 ft at 4:00PM Feb 26, 2015Observed: 3.49 ft at 4:15PM Feb 26, 2015Observed: 3.49 ft at 4:30PM Feb 26, 2015Observed: 3.5 ft at 4:45PM Feb 26, 2015Observed: 3.49 ft at 5:00PM Feb 26, 2015Observed: 3.5 ft at 5:15PM Feb 26, 2015Observed: 3.49 ft at 5:30PM Feb 26, 2015Observed: 3.5 ft at 5:45PM Feb 26, 2015Observed: 3.49 ft at 6:00PM Feb 26, 2015Observed: 3.49 ft at 6:15PM Feb 26, 2015Observed: 3.5 ft at 6:30PM Feb 26, 2015Observed: 3.49 ft at 6:45PM Feb 26, 2015Observed: 3.49 ft at 7:00PM Feb 26, 2015Observed: 3.48 ft at 7:15PM Feb 26, 2015Observed: 3.49 ft at 7:30PM Feb 26, 2015Observed: 3.49 ft at 7:45PM Feb 26, 2015Observed: 3.48 ft at 8:00PM Feb 26, 2015Observed: 3.48 ft at 8:15PM Feb 26, 2015Observed: 3.48 ft at 8:30PM Feb 26, 2015Observed: 3.47 ft at 8:45PM Feb 26, 2015Observed: 3.47 ft at 9:00PM Feb 26, 2015Observed: 3.48 ft at 9:15PM Feb 26, 2015Observed: 3.47 ft at 9:30PM Feb 26, 2015Observed: 3.47 ft at 9:45PM Feb 26, 2015Observed: 3.47 ft at 10:00PM Feb 26, 2015Observed: 3.46 ft at 10:15PM Feb 26, 2015Observed: 3.46 ft at 10:30PM Feb 26, 2015Observed: 3.46 ft at 10:45PM Feb 26, 2015Observed: 3.47 ft at 11:00PM Feb 26, 2015Observed: 3.46 ft at 11:15PM Feb 26, 2015Observed: 3.46 ft at 11:30PM Feb 26, 2015Observed: 3.46 ft at 11:45PM Feb 26, 2015Observed: 3.46 ft at 12:00AM Feb 27, 2015Observed: 3.46 ft at 12:15AM Feb 27, 2015Observed: 3.45 ft at 12:30AM Feb 27, 2015Observed: 3.45 ft at 12:45AM Feb 27, 2015Observed: 3.45 ft at 1:00AM Feb 27, 2015Observed: 3.46 ft at 1:15AM Feb 27, 2015Observed: 3.45 ft at 1:30AM Feb 27, 2015Observed: 3.46 ft at 1:45AM Feb 27, 2015Observed: 3.45 ft at 2:00AM Feb 27, 2015Observed: 3.44 ft at 2:15AM Feb 27, 2015Observed: 3.45 ft at 2:30AM Feb 27, 2015Observed: 3.45 ft at 2:45AM Feb 27, 2015Observed: 3.45 ft at 3:00AM Feb 27, 2015Observed: 3.44 ft at 3:15AM Feb 27, 2015Observed: 3.44 ft at 3:30AM Feb 27, 2015Observed: 3.45 ft at 3:45AM Feb 27, 2015Observed: 3.44 ft at 4:00AM Feb 27, 2015Observed: 3.45 ft at 4:15AM Feb 27, 2015Observed: 3.44 ft at 4:30AM Feb 27, 2015Observed: 3.45 ft at 4:45AM Feb 27, 2015Observed: 3.45 ft at 5:00AM Feb 27, 2015Observed: 3.45 ft at 5:15AM Feb 27, 2015Observed: 3.45 ft at 5:30AM Feb 27, 2015Observed: 3.45 ft at 5:45AM Feb 27, 2015Observed: 3.45 ft at 6:00AM Feb 27, 2015Observed: 3.45 ft at 6:15AM Feb 27, 2015Observed: 3.45 ft at 6:30AM Feb 27, 2015Observed: 3.44 ft at 6:45AM Feb 27, 2015Observed: 3.45 ft at 7:00AM Feb 27, 2015Observed: 3.45 ft at 7:15AM Feb 27, 2015Observed: 3.45 ft at 7:30AM Feb 27, 2015Observed: 3.45 ft at 7:45AM Feb 27, 2015Observed: 3.45 ft at 8:00AM Feb 27, 2015Observed: 3.45 ft at 8:15AM Feb 27, 2015Observed: 3.45 ft at 8:30AM Feb 27, 2015Observed: 3.45 ft at 8:45AM Feb 27, 2015Observed: 3.45 ft at 9:00AM Feb 27, 2015Observed: 3.45 ft at 9:15AM Feb 27, 2015Observed: 3.46 ft at 9:30AM Feb 27, 2015Observed: 3.46 ft at 9:45AM Feb 27, 2015Observed: 3.46 ft at 10:00AM Feb 27, 2015Observed: 3.46 ft at 10:15AM Feb 27, 2015Observed: 3.45 ft at 10:30AM Feb 27, 2015Observed: 3.46 ft at 10:45AM Feb 27, 2015Observed: 3.46 ft at 11:00AM Feb 27, 2015Observed: 3.46 ft at 11:15AM Feb 27, 2015Observed: 3.46 ft at 11:30AM Feb 27, 2015Observed: 3.45 ft at 11:45AM Feb 27, 2015Observed: 3.46 ft at 12:00PM Feb 27, 2015Observed: 3.46 ft at 12:15PM Feb 27, 2015Observed: 3.47 ft at 12:30PM Feb 27, 2015Observed: 3.46 ft at 12:45PM Feb 27, 2015Observed: 3.47 ft at 1:00PM Feb 27, 2015Observed: 3.47 ft at 1:15PM Feb 27, 2015Observed: 3.46 ft at 1:30PM Feb 27, 2015Observed: 3.46 ft at 1:45PM Feb 27, 2015Observed: 3.48 ft at 2:00PM Feb 27, 2015Observed: 3.47 ft at 2:15PM Feb 27, 2015Observed: 3.47 ft at 2:30PM Feb 27, 2015Observed: 3.47 ft at 2:45PM Feb 27, 2015Observed: 3.47 ft at 3:00PM Feb 27, 2015Observed: 3.47 ft at 3:15PM Feb 27, 2015Observed: 3.47 ft at 3:30PM Feb 27, 2015Observed: 3.48 ft at 3:45PM Feb 27, 2015Observed: 3.48 ft at 4:00PM Feb 27, 2015Observed: 3.47 ft at 4:15PM Feb 27, 2015Observed: 3.47 ft at 4:30PM Feb 27, 2015Observed: 3.47 ft at 4:45PM Feb 27, 2015Observed: 3.48 ft at 5:00PM Feb 27, 2015Observed: 3.47 ft at 5:15PM Feb 27, 2015Observed: 3.46 ft at 5:30PM Feb 27, 2015Observed: 3.47 ft at 5:45PM Feb 27, 2015Observed: 3.47 ft at 6:00PM Feb 27, 2015Observed: 3.47 ft at 6:15PM Feb 27, 2015Observed: 3.47 ft at 6:30PM Feb 27, 2015Observed: 3.46 ft at 6:45PM Feb 27, 2015Observed: 3.46 ft at 7:00PM Feb 27, 2015Observed: 3.46 ft at 7:15PM Feb 27, 2015Observed: 3.46 ft at 7:30PM Feb 27, 2015Observed: 3.46 ft at 7:45PM Feb 27, 2015Observed: 3.46 ft at 8:00PM Feb 27, 2015Observed: 3.46 ft at 8:15PM Feb 27, 2015Observed: 3.46 ft at 8:30PM Feb 27, 2015Observed: 3.46 ft at 8:45PM Feb 27, 2015Observed: 3.46 ft at 9:00PM Feb 27, 2015Observed: 3.45 ft at 9:15PM Feb 27, 2015Observed: 3.45 ft at 9:30PM Feb 27, 2015Observed: 3.46 ft at 9:45PM Feb 27, 2015Observed: 3.45 ft at 10:00PM Feb 27, 2015Observed: 3.44 ft at 10:15PM Feb 27, 2015Observed: 3.44 ft at 10:30PM Feb 27, 2015Observed: 3.44 ft at 10:45PM Feb 27, 2015Observed: 3.43 ft at 11:00PM Feb 27, 2015Observed: 3.44 ft at 11:15PM Feb 27, 2015Observed: 3.42 ft at 11:30PM Feb 27, 2015Observed: 3.42 ft at 11:45PM Feb 27, 2015Observed: 3.41 ft at 12:00AM Feb 28, 2015Observed: 3.41 ft at 12:15AM Feb 28, 2015Observed: 3.4 ft at 12:30AM Feb 28, 2015Observed: 3.4 ft at 12:45AM Feb 28, 2015Observed: 3.39 ft at 1:00AM Feb 28, 2015Observed: 3.39 ft at 1:15AM Feb 28, 2015Observed: 3.39 ft at 1:30AM Feb 28, 2015Observed: 3.38 ft at 1:45AM Feb 28, 2015Observed: 3.38 ft at 2:00AM Feb 28, 2015Observed: 3.37 ft at 2:15AM Feb 28, 2015Observed: 3.37 ft at 2:30AM Feb 28, 2015Observed: 3.37 ft at 2:45AM Feb 28, 2015Observed: 3.37 ft at 3:00AM Feb 28, 2015Observed: 3.37 ft at 3:15AM Feb 28, 2015Observed: 3.36 ft at 3:30AM Feb 28, 2015Observed: 3.37 ft at 3:45AM Feb 28, 2015Observed: 3.36 ft at 4:00AM Feb 28, 2015Observed: 3.36 ft at 4:15AM Feb 28, 2015Observed: 3.37 ft at 4:30AM Feb 28, 2015Observed: 3.36 ft at 4:45AM Feb 28, 2015Observed: 3.37 ft at 5:00AM Feb 28, 2015Observed: 3.36 ft at 5:15AM Feb 28, 2015Observed: 3.36 ft at 5:30AM Feb 28, 2015Observed: 3.36 ft at 5:45AM Feb 28, 2015Observed: 3.36 ft at 6:00AM Feb 28, 2015Observed: 3.36 ft at 6:15AM Feb 28, 2015Observed: 3.36 ft at 6:30AM Feb 28, 2015Observed: 3.36 ft at 6:45AM Feb 28, 2015Observed: 3.36 ft at 7:00AM Feb 28, 2015Observed: 3.37 ft at 7:15AM Feb 28, 2015Observed: 3.37 ft at 7:30AM Feb 28, 2015Observed: 3.37 ft at 7:45AM Feb 28, 2015Observed: 3.37 ft at 8:00AM Feb 28, 2015Observed: 3.37 ft at 8:15AM Feb 28, 2015Observed: 3.38 ft at 8:30AM Feb 28, 2015Observed: 3.38 ft at 8:45AM Feb 28, 2015Observed: 3.38 ft at 9:00AM Feb 28, 2015Observed: 3.39 ft at 9:15AM Feb 28, 2015Observed: 3.4 ft at 9:30AM Feb 28, 2015Observed: 3.4 ft at 9:45AM Feb 28, 2015Observed: 3.42 ft at 10:00AM Feb 28, 2015Observed: 3.43 ft at 10:15AM Feb 28, 2015Observed: 3.46 ft at 10:30AM Feb 28, 2015Observed: 3.47 ft at 10:45AM Feb 28, 2015Observed: 3.49 ft at 11:00AM Feb 28, 2015Highest Observation: 3.51 ft at 11:15AM Feb 28, 2015Highest Observation: 3.51 ft at 11:30AM Feb 28, 2015Observed: 3.5 ft at 11:45AM Feb 28, 2015Observed: 3.5 ft at 12:00PM Feb 28, 2015Observed: 3.5 ft at 12:15PM Feb 28, 2015Observed: 3.49 ft at 12:30PM Feb 28, 2015Observed: 3.48 ft at 12:45PM Feb 28, 2015Observed: 3.48 ft at 1:00PM Feb 28, 2015Observed: 3.47 ft at 1:15PM Feb 28, 2015Observed: 3.46 ft at 1:30PM Feb 28, 2015Observed: 3.45 ft at 1:45PM Feb 28, 2015Observed: 3.45 ft at 2:00PM Feb 28, 2015Observed: 3.44 ft at 2:15PM Feb 28, 2015Observed: 3.44 ft at 2:30PM Feb 28, 2015Observed: 3.45 ft at 2:45PM Feb 28, 2015Observed: 3.45 ft at 3:00PM Feb 28, 2015Observed: 3.44 ft at 3:15PM Feb 28, 2015Observed: 3.44 ft at 3:30PM Feb 28, 2015Observed: 3.46 ft at 3:45PM Feb 28, 2015Observed: 3.46 ft at 4:00PM Feb 28, 2015Observed: 3.45 ft at 4:15PM Feb 28, 2015Observed: 3.45 ft at 4:30PM Feb 28, 2015Observed: 3.46 ft at 4:45PM Feb 28, 2015Observed: 3.45 ft at 5:00PM Feb 28, 2015Observed: 3.45 ft at 5:15PM Feb 28, 2015Observed: 3.45 ft at 5:30PM Feb 28, 2015Observed: 3.44 ft at 5:45PM Feb 28, 2015Observed: 3.44 ft at 6:00PM Feb 28, 2015Observed: 3.43 ft at 6:15PM Feb 28, 2015Observed: 3.43 ft at 6:30PM Feb 28, 2015Observed: 3.42 ft at 6:45PM Feb 28, 2015Observed: 3.42 ft at 7:00PM Feb 28, 2015Observed: 3.4 ft at 7:15PM Feb 28, 2015Observed: 3.4 ft at 7:30PM Feb 28, 2015Observed: 3.4 ft at 7:45PM Feb 28, 2015Observed: 3.4 ft at 8:00PM Feb 28, 2015Observed: 3.4 ft at 8:15PM Feb 28, 2015Observed: 3.4 ft at 8:30PM Feb 28, 2015Observed: 3.39 ft at 8:45PM Feb 28, 2015Observed: 3.39 ft at 9:00PM Feb 28, 2015Observed: 3.38 ft at 9:15PM Feb 28, 2015Observed: 3.38 ft at 9:30PM Feb 28, 2015Observed: 3.38 ft at 9:45PM Feb 28, 2015Observed: 3.37 ft at 10:00PM Feb 28, 2015Observed: 3.37 ft at 10:15PM Feb 28, 2015Observed: 3.36 ft at 10:30PM Feb 28, 2015Observed: 3.36 ft at 10:45PM Feb 28, 2015Observed: 3.36 ft at 11:00PM Feb 28, 2015Observed: 3.36 ft at 11:15PM Feb 28, 2015Observed: 3.35 ft at 11:30PM Feb 28, 2015Observed: 3.34 ft at 11:45PM Feb 28, 2015Observed: 3.34 ft at 12:00AM Mar 01, 2015Observed: 3.34 ft at 12:15AM Mar 01, 2015Observed: 3.34 ft at 12:30AM Mar 01, 2015Observed: 3.33 ft at 12:45AM Mar 01, 2015Observed: 3.32 ft at 1:00AM Mar 01, 2015Observed: 3.32 ft at 1:15AM Mar 01, 2015Observed: 3.32 ft at 1:30AM Mar 01, 2015Observed: 3.31 ft at 1:45AM Mar 01, 2015Observed: 3.3 ft at 2:00AM Mar 01, 2015Observed: 3.31 ft at 2:15AM Mar 01, 2015Observed: 3.3 ft at 2:30AM Mar 01, 2015Observed: 3.31 ft at 2:45AM Mar 01, 2015Observed: 3.3 ft at 3:00AM Mar 01, 2015Observed: 3.3 ft at 3:15AM Mar 01, 2015Observed: 3.3 ft at 3:30AM Mar 01, 2015Observed: 3.3 ft at 3:45AM Mar 01, 2015Observed: 3.3 ft at 4:00AM Mar 01, 2015Observed: 3.29 ft at 4:15AM Mar 01, 2015Observed: 3.29 ft at 4:30AM Mar 01, 2015Observed: 3.3 ft at 4:45AM Mar 01, 2015Observed: 3.3 ft at 5:00AM Mar 01, 2015Observed: 3.3 ft at 5:15AM Mar 01, 2015Observed: 3.29 ft at 5:30AM Mar 01, 2015Observed: 3.3 ft at 5:45AM Mar 01, 2015Observed: 3.3 ft at 6:00AM Mar 01, 2015Observed: 3.3 ft at 6:15AM Mar 01, 2015Observed: 3.3 ft at 6:30AM Mar 01, 2015Observed: 3.31 ft at 6:45AM Mar 01, 2015Observed: 3.31 ft at 7:00AM Mar 01, 2015Observed: 3.31 ft at 7:15AM Mar 01, 2015Observed: 3.31 ft at 7:30AM Mar 01, 2015Observed: 3.32 ft at 7:45AM Mar 01, 2015Observed: 3.32 ft at 8:00AM Mar 01, 2015Observed: 3.32 ft at 8:15AM Mar 01, 2015Observed: 3.33 ft at 8:30AM Mar 01, 2015Observed: 3.33 ft at 8:45AM Mar 01, 2015Observed: 3.33 ft at 9:00AM Mar 01, 2015Observed: 3.34 ft at 9:15AM Mar 01, 2015Observed: 3.34 ft at 9:30AM Mar 01, 2015Observed: 3.34 ft at 9:45AM Mar 01, 2015Observed: 3.35 ft at 10:00AM Mar 01, 2015Observed: 3.35 ft at 10:15AM Mar 01, 2015Observed: 3.35 ft at 10:30AM Mar 01, 2015Observed: 3.35 ft at 10:45AM Mar 01, 2015Observed: 3.36 ft at 11:00AM Mar 01, 2015Observed: 3.36 ft at 11:15AM Mar 01, 2015Observed: 3.36 ft at 11:30AM Mar 01, 2015Observed: 3.36 ft at 11:45AM Mar 01, 2015Observed: 3.36 ft at 12:00PM Mar 01, 2015Observed: 3.37 ft at 12:15PM Mar 01, 2015Observed: 3.37 ft at 12:30PM Mar 01, 2015Observed: 3.37 ft at 12:45PM Mar 01, 2015Observed: 3.37 ft at 1:00PM Mar 01, 2015Observed: 3.37 ft at 1:15PM Mar 01, 2015Observed: 3.36 ft at 1:30PM Mar 01, 2015Observed: 3.37 ft at 1:45PM Mar 01, 2015Observed: 3.37 ft at 2:00PM Mar 01, 2015Observed: 3.36 ft at 2:15PM Mar 01, 2015Observed: 3.36 ft at 2:30PM Mar 01, 2015Observed: 3.36 ft at 2:45PM Mar 01, 2015Observed: 3.36 ft at 3:00PM Mar 01, 2015Observed: 3.36 ft at 3:15PM Mar 01, 2015Observed: 3.36 ft at 3:30PM Mar 01, 2015Observed: 3.35 ft at 3:45PM Mar 01, 2015Observed: 3.35 ft at 4:00PM Mar 01, 2015Observed: 3.35 ft at 4:15PM Mar 01, 2015Observed: 3.35 ft at 4:30PM Mar 01, 2015Observed: 3.36 ft at 4:45PM Mar 01, 2015Observed: 3.34 ft at 8:00AM Mar 02, 2015Observed: 3.33 ft at 8:15AM Mar 02, 2015Observed: 3.34 ft at 8:30AM Mar 02, 2015Observed: 3.35 ft at 8:45AM Mar 02, 2015Observed: 3.34 ft at 9:00AM Mar 02, 2015Observed: 3.35 ft at 9:15AM Mar 02, 2015Observed: 3.35 ft at 9:30AM Mar 02, 2015Observed: 3.35 ft at 9:45AM Mar 02, 2015Observed: 3.35 ft at 10:00AM Mar 02, 2015Observed: 3.36 ft at 10:15AM Mar 02, 2015Observed: 3.36 ft at 10:30AM Mar 02, 2015Observed: 3.37 ft at 10:45AM Mar 02, 2015Observed: 3.34 ft at 11:00AM Mar 02, 2015Observed: 3.35 ft at 11:15AM Mar 02, 2015Observed: 3.36 ft at 11:30AM Mar 02, 2015Observed: 3.28 ft at 11:45AM Mar 02, 2015Observed: 3.36 ft at 12:00PM Mar 02, 2015Observed: 3.37 ft at 12:15PM Mar 02, 2015Observed: 3.36 ft at 12:30PM Mar 02, 2015Observed: 3.37 ft at 12:45PM Mar 02, 2015Observed: 3.37 ft at 1:00PM Mar 02, 2015Observed: 3.38 ft at 1:15PM Mar 02, 2015Observed: 3.38 ft at 1:30PM Mar 02, 2015Observed: 3.38 ft at 1:45PM Mar 02, 2015Observed: 3.36 ft at 2:00PM Mar 02, 2015Observed: 3.4 ft at 2:15PM Mar 02, 2015Observed: 3.38 ft at 2:30PM Mar 02, 2015Observed: 3.38 ft at 2:45PM Mar 02, 2015Forecast: 3.3 ft 7:00PM Mar 02, 2015Forecast: 3.3 ft 1:00AM Mar 03, 2015Forecast: 3.3 ft 7:00AM Mar 03, 2015Forecast: 3.3 ft 1:00PM Mar 03, 2015Forecast: 3.3 ft 7:00PM Mar 03, 2015Forecast: 3.3 ft 1:00AM Mar 04, 2015Forecast: 3.5 ft 7:00AM Mar 04, 2015Forecast: 3.6 ft 1:00PM Mar 04, 2015Forecast: 3.8 ft 7:00PM Mar 04, 2015Forecast: 4.3 ft 1:00AM Mar 05, 2015Highest Forecast: 4.8 ft 7:00AM Mar 05, 2015USGS--Water Resources of the United StatesBRKM2(plotting HGIRG) Graph Created (3:20PM Mar 2, 2015)ObservedForecast (issued 9:07AM Mar 2)Latest observed value: 3.38 ft at 2:45 PM EST 2-Mar-2015. 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: Gauge reading 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): 0

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) 11.70 ft on 05/18/2014
(2) 10.33 ft on 10/31/2012
(3) 9.78 ft on 09/09/2011
(4) 11.30 ft on 05/20/2011
(5) 11.68 ft on 04/18/2011
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
KML Image
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
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.
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.
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 begins to affect portions of the Billy Goat Trail between Great Falls and Carderock. These trails may be closed.
5 Portions of the Potomac Heritage Trail begin to flood.
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:

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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
(Baltimore/Washington) Sterling Weather Forecast Office
43858 Weather Service Rd.
Sterling, VA 20166
(703) 996-2200
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Page last modified: 12-Feb-2015 9:34 PM
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