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Hydrograph River at a Glance Download
Difficult Run near Great Falls Stage (ft)Flow (cfs)Observed: 2.92 ft at 11:00AM Nov 27, 2022Observed: 2.92 ft at 11:15AM Nov 27, 2022Observed: 2.92 ft at 11:30AM Nov 27, 2022Observed: 2.92 ft at 11:45AM Nov 27, 2022Observed: 2.92 ft at 12:00PM Nov 27, 2022Observed: 2.92 ft at 12:15PM Nov 27, 2022Observed: 2.93 ft at 12:30PM Nov 27, 2022Observed: 2.92 ft at 12:45PM Nov 27, 2022Observed: 2.92 ft at 1:00PM Nov 27, 2022Observed: 2.92 ft at 1:15PM Nov 27, 2022Observed: 2.92 ft at 1:30PM Nov 27, 2022Observed: 2.92 ft at 1:45PM Nov 27, 2022Observed: 2.92 ft at 2:00PM Nov 27, 2022Observed: 2.93 ft at 2:15PM Nov 27, 2022Observed: 2.93 ft at 2:30PM Nov 27, 2022Observed: 2.93 ft at 2:45PM Nov 27, 2022Observed: 2.93 ft at 3:00PM Nov 27, 2022Observed: 2.93 ft at 3:15PM Nov 27, 2022Observed: 2.93 ft at 3:30PM Nov 27, 2022Observed: 2.93 ft at 3:45PM Nov 27, 2022Observed: 2.93 ft at 4:00PM Nov 27, 2022Observed: 2.93 ft at 4:15PM Nov 27, 2022Observed: 2.93 ft at 4:30PM Nov 27, 2022Observed: 2.93 ft at 4:45PM Nov 27, 2022Observed: 2.93 ft at 5:00PM Nov 27, 2022Observed: 2.93 ft at 5:15PM Nov 27, 2022Observed: 2.93 ft at 5:30PM Nov 27, 2022Observed: 2.93 ft at 5:45PM Nov 27, 2022Observed: 2.93 ft at 6:00PM Nov 27, 2022Observed: 2.94 ft at 6:15PM Nov 27, 2022Observed: 2.94 ft at 6:30PM Nov 27, 2022Observed: 2.94 ft at 6:45PM Nov 27, 2022Observed: 2.95 ft at 7:00PM Nov 27, 2022Observed: 2.96 ft at 7:15PM Nov 27, 2022Observed: 2.96 ft at 7:30PM Nov 27, 2022Observed: 2.97 ft at 7:45PM Nov 27, 2022Observed: 2.97 ft at 8:00PM Nov 27, 2022Observed: 2.97 ft at 8:15PM Nov 27, 2022Observed: 2.97 ft at 8:30PM Nov 27, 2022Observed: 2.97 ft at 8:45PM Nov 27, 2022Observed: 2.97 ft at 9:00PM Nov 27, 2022Observed: 2.97 ft at 9:15PM Nov 27, 2022Observed: 2.97 ft at 9:30PM Nov 27, 2022Observed: 2.97 ft at 9:45PM Nov 27, 2022Observed: 2.97 ft at 10:00PM Nov 27, 2022Observed: 2.97 ft at 10:15PM Nov 27, 2022Observed: 2.98 ft at 10:30PM Nov 27, 2022Observed: 2.99 ft at 10:45PM Nov 27, 2022Observed: 2.99 ft at 11:00PM Nov 27, 2022Observed: 3 ft at 11:15PM Nov 27, 2022Observed: 3.01 ft at 11:30PM Nov 27, 2022Observed: 3.02 ft at 11:45PM Nov 27, 2022Observed: 3.02 ft at 12:00AM Nov 28, 2022Observed: 3.03 ft at 12:15AM Nov 28, 2022Observed: 3.03 ft at 12:30AM Nov 28, 2022Observed: 3.03 ft at 12:45AM Nov 28, 2022Observed: 3.03 ft at 1:00AM Nov 28, 2022Observed: 3.03 ft at 1:15AM Nov 28, 2022Observed: 3.03 ft at 1:30AM Nov 28, 2022Observed: 3.03 ft at 1:45AM Nov 28, 2022Observed: 3.03 ft at 2:00AM Nov 28, 2022Observed: 3.03 ft at 2:15AM Nov 28, 2022Observed: 3.03 ft at 2:30AM Nov 28, 2022Observed: 3.02 ft at 2:45AM Nov 28, 2022Observed: 3.02 ft at 3:00AM Nov 28, 2022Observed: 3.02 ft at 3:15AM Nov 28, 2022Observed: 3.02 ft at 3:30AM Nov 28, 2022Observed: 3.02 ft at 3:45AM Nov 28, 2022Observed: 3.02 ft at 4:00AM Nov 28, 2022Observed: 3.02 ft at 4:15AM Nov 28, 2022Observed: 3.02 ft at 4:30AM Nov 28, 2022Observed: 3.02 ft at 4:45AM Nov 28, 2022Observed: 3.02 ft at 5:00AM Nov 28, 2022Observed: 3.02 ft at 5:15AM Nov 28, 2022Observed: 3.02 ft at 5:30AM Nov 28, 2022Observed: 3.02 ft at 5:45AM Nov 28, 2022Observed: 3.02 ft at 6:00AM Nov 28, 2022Observed: 3.02 ft at 6:15AM Nov 28, 2022Observed: 3.02 ft at 6:30AM Nov 28, 2022Observed: 3.02 ft at 6:45AM Nov 28, 2022Observed: 3.02 ft at 7:00AM Nov 28, 2022Observed: 3.02 ft at 7:15AM Nov 28, 2022Observed: 3.02 ft at 7:30AM Nov 28, 2022Observed: 3.02 ft at 7:45AM Nov 28, 2022Observed: 3.01 ft at 8:00AM Nov 28, 2022Observed: 3.01 ft at 8:15AM Nov 28, 2022Observed: 3.02 ft at 8:30AM Nov 28, 2022Observed: 3.01 ft at 8:45AM Nov 28, 2022Observed: 3.01 ft at 9:00AM Nov 28, 2022Observed: 3.01 ft at 9:15AM Nov 28, 2022Observed: 3.01 ft at 9:30AM Nov 28, 2022Observed: 3.01 ft at 9:45AM Nov 28, 2022Observed: 3 ft at 10:00AM Nov 28, 2022Observed: 3 ft at 10:15AM Nov 28, 2022Observed: 3 ft at 10:30AM Nov 28, 2022Observed: 3 ft at 10:45AM Nov 28, 2022Observed: 2.99 ft at 11:00AM Nov 28, 2022Observed: 2.99 ft at 11:15AM Nov 28, 2022Observed: 2.99 ft at 11:30AM Nov 28, 2022Observed: 2.99 ft at 11:45AM Nov 28, 2022Observed: 2.99 ft at 12:00PM Nov 28, 2022Observed: 2.98 ft at 12:15PM Nov 28, 2022Observed: 2.98 ft at 12:30PM Nov 28, 2022Observed: 2.98 ft at 12:45PM Nov 28, 2022Observed: 2.98 ft at 1:00PM Nov 28, 2022Observed: 2.97 ft at 1:15PM Nov 28, 2022Observed: 2.97 ft at 1:30PM Nov 28, 2022Observed: 2.97 ft at 1:45PM Nov 28, 2022Observed: 2.97 ft at 2:00PM Nov 28, 2022Observed: 2.97 ft at 2:15PM Nov 28, 2022Observed: 2.97 ft at 2:30PM Nov 28, 2022Observed: 2.97 ft at 2:45PM Nov 28, 2022Observed: 2.96 ft at 3:00PM Nov 28, 2022Observed: 2.96 ft at 3:15PM Nov 28, 2022Observed: 2.96 ft at 3:30PM Nov 28, 2022Observed: 2.96 ft at 3:45PM Nov 28, 2022Observed: 2.96 ft at 4:00PM Nov 28, 2022Observed: 2.96 ft at 4:15PM Nov 28, 2022Observed: 2.96 ft at 4:30PM Nov 28, 2022Observed: 2.96 ft at 4:45PM Nov 28, 2022Observed: 2.96 ft at 5:00PM Nov 28, 2022Observed: 2.96 ft at 5:15PM Nov 28, 2022Observed: 2.96 ft at 5:30PM Nov 28, 2022Observed: 2.96 ft at 5:45PM Nov 28, 2022Observed: 2.95 ft at 6:00PM Nov 28, 2022Observed: 2.95 ft at 6:15PM Nov 28, 2022Observed: 2.95 ft at 6:30PM Nov 28, 2022Observed: 2.95 ft at 6:45PM Nov 28, 2022Observed: 2.95 ft at 7:00PM Nov 28, 2022Observed: 2.95 ft at 7:15PM Nov 28, 2022Observed: 2.95 ft at 7:30PM Nov 28, 2022Observed: 2.95 ft at 7:45PM Nov 28, 2022Observed: 2.95 ft at 8:00PM Nov 28, 2022Observed: 2.95 ft at 8:15PM Nov 28, 2022Observed: 2.94 ft at 8:30PM Nov 28, 2022Observed: 2.94 ft at 8:45PM Nov 28, 2022Observed: 2.94 ft at 9:00PM Nov 28, 2022Observed: 2.94 ft at 9:15PM Nov 28, 2022Observed: 2.94 ft at 9:30PM Nov 28, 2022Observed: 2.94 ft at 9:45PM Nov 28, 2022Observed: 2.94 ft at 10:00PM Nov 28, 2022Observed: 2.93 ft at 10:15PM Nov 28, 2022Observed: 2.93 ft at 10:30PM Nov 28, 2022Observed: 2.93 ft at 10:45PM Nov 28, 2022Observed: 2.93 ft at 11:00PM Nov 28, 2022Observed: 2.93 ft at 11:15PM Nov 28, 2022Observed: 2.93 ft at 11:30PM Nov 28, 2022Observed: 2.93 ft at 11:45PM Nov 28, 2022Observed: 2.93 ft at 12:00AM Nov 29, 2022Observed: 2.93 ft at 12:15AM Nov 29, 2022Observed: 2.93 ft at 12:30AM Nov 29, 2022Observed: 2.93 ft at 12:45AM Nov 29, 2022Observed: 2.93 ft at 1:00AM Nov 29, 2022Observed: 2.93 ft at 1:15AM Nov 29, 2022Observed: 2.93 ft at 1:30AM Nov 29, 2022Observed: 2.93 ft at 1:45AM Nov 29, 2022Observed: 2.92 ft at 2:00AM Nov 29, 2022Observed: 2.92 ft at 2:15AM Nov 29, 2022Observed: 2.92 ft at 2:30AM Nov 29, 2022Observed: 2.92 ft at 2:45AM Nov 29, 2022Observed: 2.92 ft at 3:00AM Nov 29, 2022Observed: 2.92 ft at 3:15AM Nov 29, 2022Observed: 2.92 ft at 3:30AM Nov 29, 2022Observed: 2.92 ft at 3:45AM Nov 29, 2022Observed: 2.92 ft at 4:00AM Nov 29, 2022Observed: 2.92 ft at 4:15AM Nov 29, 2022Observed: 2.92 ft at 4:30AM Nov 29, 2022Observed: 2.92 ft at 4:45AM Nov 29, 2022Observed: 2.92 ft at 5:00AM Nov 29, 2022Observed: 2.92 ft at 5:15AM Nov 29, 2022Observed: 2.91 ft at 5:30AM Nov 29, 2022Observed: 2.92 ft at 5:45AM Nov 29, 2022Observed: 2.91 ft at 6:00AM Nov 29, 2022Observed: 2.91 ft at 6:15AM Nov 29, 2022Observed: 2.91 ft at 6:30AM Nov 29, 2022Observed: 2.91 ft at 6:45AM Nov 29, 2022Observed: 2.91 ft at 7:00AM Nov 29, 2022Observed: 2.91 ft at 7:15AM Nov 29, 2022Observed: 2.91 ft at 7:30AM Nov 29, 2022Observed: 2.91 ft at 7:45AM Nov 29, 2022Observed: 2.91 ft at 8:00AM Nov 29, 2022Observed: 2.91 ft at 8:15AM Nov 29, 2022Observed: 2.91 ft at 8:30AM Nov 29, 2022Observed: 2.91 ft at 8:45AM Nov 29, 2022Observed: 2.91 ft at 9:00AM Nov 29, 2022Observed: 2.91 ft at 9:15AM Nov 29, 2022Observed: 2.91 ft at 9:30AM Nov 29, 2022Observed: 2.91 ft at 9:45AM Nov 29, 2022Observed: 2.91 ft at 10:00AM Nov 29, 2022Observed: 2.91 ft at 10:15AM Nov 29, 2022Observed: 2.91 ft at 10:30AM Nov 29, 2022Observed: 2.91 ft at 10:45AM Nov 29, 2022Observed: 2.91 ft at 11:00AM Nov 29, 2022Observed: 2.91 ft at 11:15AM Nov 29, 2022Observed: 2.9 ft at 11:30AM Nov 29, 2022Observed: 2.91 ft at 11:45AM Nov 29, 2022Observed: 2.9 ft at 12:00PM Nov 29, 2022Observed: 2.9 ft at 12:15PM Nov 29, 2022Observed: 2.9 ft at 12:30PM Nov 29, 2022Observed: 2.9 ft at 12:45PM Nov 29, 2022Observed: 2.9 ft at 1:00PM Nov 29, 2022Observed: 2.9 ft at 1:15PM Nov 29, 2022Observed: 2.9 ft at 1:30PM Nov 29, 2022Observed: 2.9 ft at 1:45PM Nov 29, 2022Observed: 2.9 ft at 2:00PM Nov 29, 2022Observed: 2.9 ft at 2:15PM Nov 29, 2022Observed: 2.9 ft at 2:30PM Nov 29, 2022Observed: 2.9 ft at 2:45PM Nov 29, 2022Observed: 2.9 ft at 3:00PM Nov 29, 2022Observed: 2.9 ft at 3:15PM Nov 29, 2022Observed: 2.9 ft at 3:30PM Nov 29, 2022Observed: 2.9 ft at 3:45PM Nov 29, 2022Observed: 2.9 ft at 4:00PM Nov 29, 2022Observed: 2.9 ft at 4:15PM Nov 29, 2022Observed: 2.9 ft at 4:30PM Nov 29, 2022Observed: 2.9 ft at 4:45PM Nov 29, 2022Observed: 2.9 ft at 5:00PM Nov 29, 2022Observed: 2.9 ft at 5:15PM Nov 29, 2022Observed: 2.9 ft at 5:30PM Nov 29, 2022Observed: 2.9 ft at 5:45PM Nov 29, 2022Observed: 2.9 ft at 6:00PM Nov 29, 2022Observed: 2.9 ft at 6:15PM Nov 29, 2022Observed: 2.9 ft at 6:30PM Nov 29, 2022Observed: 2.9 ft at 6:45PM Nov 29, 2022Observed: 2.9 ft at 7:00PM Nov 29, 2022Observed: 2.9 ft at 7:15PM Nov 29, 2022Observed: 2.9 ft at 7:30PM Nov 29, 2022Observed: 2.9 ft at 7:45PM Nov 29, 2022Observed: 2.89 ft at 8:00PM Nov 29, 2022Observed: 2.89 ft at 8:15PM Nov 29, 2022Observed: 2.89 ft at 8:30PM Nov 29, 2022Observed: 2.89 ft at 8:45PM Nov 29, 2022Observed: 2.89 ft at 9:00PM Nov 29, 2022Observed: 2.89 ft at 9:15PM Nov 29, 2022Observed: 2.9 ft at 9:30PM Nov 29, 2022Observed: 2.9 ft at 9:45PM Nov 29, 2022Observed: 2.9 ft at 10:00PM Nov 29, 2022Observed: 2.9 ft at 10:15PM Nov 29, 2022Observed: 2.9 ft at 10:30PM Nov 29, 2022Observed: 2.9 ft at 10:45PM Nov 29, 2022Observed: 2.9 ft at 11:00PM Nov 29, 2022Observed: 2.9 ft at 11:15PM Nov 29, 2022Observed: 2.9 ft at 11:30PM Nov 29, 2022Observed: 2.9 ft at 11:45PM Nov 29, 2022Observed: 2.9 ft at 12:00AM Nov 30, 2022Observed: 2.9 ft at 12:15AM Nov 30, 2022Observed: 2.9 ft at 12:30AM Nov 30, 2022Observed: 2.9 ft at 12:45AM Nov 30, 2022Observed: 2.9 ft at 1:00AM Nov 30, 2022Observed: 2.9 ft at 1:15AM Nov 30, 2022Observed: 2.9 ft at 1:30AM Nov 30, 2022Observed: 2.9 ft at 1:45AM Nov 30, 2022Observed: 2.9 ft at 2:00AM Nov 30, 2022Observed: 2.9 ft at 2:15AM Nov 30, 2022Observed: 2.9 ft at 2:30AM Nov 30, 2022Observed: 2.9 ft at 2:45AM Nov 30, 2022Observed: 2.9 ft at 3:00AM Nov 30, 2022Observed: 2.9 ft at 3:15AM Nov 30, 2022Observed: 2.9 ft at 3:30AM Nov 30, 2022Observed: 2.9 ft at 3:45AM Nov 30, 2022Observed: 2.9 ft at 4:00AM Nov 30, 2022Observed: 2.9 ft at 4:15AM Nov 30, 2022Observed: 2.9 ft at 4:30AM Nov 30, 2022Observed: 2.9 ft at 4:45AM Nov 30, 2022Observed: 2.9 ft at 5:00AM Nov 30, 2022Observed: 2.9 ft at 5:15AM Nov 30, 2022Observed: 2.9 ft at 5:30AM Nov 30, 2022Observed: 2.91 ft at 5:45AM Nov 30, 2022Observed: 2.91 ft at 6:00AM Nov 30, 2022Observed: 2.91 ft at 6:15AM Nov 30, 2022Observed: 2.92 ft at 6:30AM Nov 30, 2022Observed: 2.92 ft at 6:45AM Nov 30, 2022Observed: 2.92 ft at 7:00AM Nov 30, 2022Observed: 2.92 ft at 7:15AM Nov 30, 2022Observed: 2.92 ft at 7:30AM Nov 30, 2022Observed: 2.92 ft at 7:45AM Nov 30, 2022Observed: 2.93 ft at 8:00AM Nov 30, 2022Observed: 2.93 ft at 8:15AM Nov 30, 2022Observed: 2.93 ft at 8:30AM Nov 30, 2022Observed: 2.93 ft at 8:45AM Nov 30, 2022Observed: 2.93 ft at 9:00AM Nov 30, 2022Observed: 2.94 ft at 9:15AM Nov 30, 2022Observed: 2.94 ft at 9:30AM Nov 30, 2022Observed: 2.94 ft at 9:45AM Nov 30, 2022Observed: 2.94 ft at 10:00AM Nov 30, 2022Observed: 2.95 ft at 10:15AM Nov 30, 2022Observed: 2.95 ft at 10:30AM Nov 30, 2022Observed: 2.95 ft at 10:45AM Nov 30, 2022Observed: 2.96 ft at 11:00AM Nov 30, 2022Observed: 3.01 ft at 11:15AM Nov 30, 2022Observed: 3.05 ft at 11:30AM Nov 30, 2022Observed: 3.07 ft at 11:45AM Nov 30, 2022Observed: 3.08 ft at 12:00PM Nov 30, 2022Observed: 3.08 ft at 12:15PM Nov 30, 2022Observed: 3.08 ft at 12:30PM Nov 30, 2022Observed: 3.09 ft at 12:45PM Nov 30, 2022Observed: 3.09 ft at 1:00PM Nov 30, 2022Observed: 3.1 ft at 1:15PM Nov 30, 2022Observed: 3.11 ft at 1:30PM Nov 30, 2022Observed: 3.13 ft at 1:45PM Nov 30, 2022Observed: 3.16 ft at 2:00PM Nov 30, 2022Observed: 3.19 ft at 2:15PM Nov 30, 2022Observed: 3.22 ft at 2:30PM Nov 30, 2022Observed: 3.26 ft at 2:45PM Nov 30, 2022Observed: 3.29 ft at 3:00PM Nov 30, 2022Observed: 3.32 ft at 3:15PM Nov 30, 2022Observed: 3.35 ft at 3:30PM Nov 30, 2022Observed: 3.37 ft at 3:45PM Nov 30, 2022Observed: 3.39 ft at 4:00PM Nov 30, 2022Observed: 3.41 ft at 4:15PM Nov 30, 2022Observed: 3.42 ft at 4:30PM Nov 30, 2022Highest Observation: 3.43 ft at 4:45PM Nov 30, 2022Highest Observation: 3.43 ft at 5:00PM Nov 30, 2022Observed: 3.42 ft at 5:15PM Nov 30, 2022Observed: 3.41 ft at 5:30PM Nov 30, 2022Observed: 3.4 ft at 5:45PM Nov 30, 2022Observed: 3.39 ft at 6:00PM Nov 30, 2022Observed: 3.38 ft at 6:15PM Nov 30, 2022Observed: 3.36 ft at 6:30PM Nov 30, 2022Observed: 3.35 ft at 6:45PM Nov 30, 2022Observed: 3.34 ft at 7:00PM Nov 30, 2022Observed: 3.33 ft at 7:15PM Nov 30, 2022Observed: 3.33 ft at 7:30PM Nov 30, 2022Observed: 3.32 ft at 7:45PM Nov 30, 2022Observed: 3.31 ft at 8:00PM Nov 30, 2022Observed: 3.3 ft at 8:15PM Nov 30, 2022Observed: 3.3 ft at 8:30PM Nov 30, 2022Observed: 3.3 ft at 8:45PM Nov 30, 2022Observed: 3.3 ft at 9:00PM Nov 30, 2022Observed: 3.3 ft at 9:15PM Nov 30, 2022Observed: 3.3 ft at 9:30PM Nov 30, 2022Observed: 3.3 ft at 9:45PM Nov 30, 2022Observed: 3.29 ft at 10:00PM Nov 30, 2022Observed: 3.29 ft at 10:15PM Nov 30, 2022Observed: 3.29 ft at 10:30PM Nov 30, 2022Observed: 3.28 ft at 10:45PM Nov 30, 2022Observed: 3.28 ft at 11:00PM Nov 30, 2022Observed: 3.27 ft at 11:15PM Nov 30, 2022Observed: 3.27 ft at 11:30PM Nov 30, 2022Observed: 3.26 ft at 11:45PM Nov 30, 2022Observed: 3.25 ft at 12:00AM Dec 01, 2022Observed: 3.25 ft at 12:15AM Dec 01, 2022Observed: 3.24 ft at 12:30AM Dec 01, 2022Observed: 3.24 ft at 12:45AM Dec 01, 2022Observed: 3.23 ft at 1:00AM Dec 01, 2022Observed: 3.22 ft at 1:15AM Dec 01, 2022Observed: 3.22 ft at 1:30AM Dec 01, 2022Observed: 3.21 ft at 1:45AM Dec 01, 2022Observed: 3.2 ft at 2:00AM Dec 01, 2022Observed: 3.2 ft at 2:15AM Dec 01, 2022Observed: 3.19 ft at 2:30AM Dec 01, 2022Observed: 3.19 ft at 2:45AM Dec 01, 2022Observed: 3.18 ft at 3:00AM Dec 01, 2022Observed: 3.18 ft at 3:15AM Dec 01, 2022Observed: 3.17 ft at 3:30AM Dec 01, 2022Observed: 3.16 ft at 3:45AM Dec 01, 2022Observed: 3.16 ft at 4:00AM Dec 01, 2022Observed: 3.15 ft at 4:15AM Dec 01, 2022Observed: 3.15 ft at 4:30AM Dec 01, 2022Observed: 3.14 ft at 4:45AM Dec 01, 2022Observed: 3.14 ft at 5:00AM Dec 01, 2022Observed: 3.13 ft at 5:15AM Dec 01, 2022Observed: 3.13 ft at 5:30AM Dec 01, 2022Observed: 3.12 ft at 5:45AM Dec 01, 2022Observed: 3.11 ft at 6:00AM Dec 01, 2022Observed: 3.11 ft at 6:15AM Dec 01, 2022Observed: 3.11 ft at 6:30AM Dec 01, 2022Observed: 3.1 ft at 6:45AM Dec 01, 2022Observed: 3.1 ft at 7:00AM Dec 01, 2022Observed: 3.09 ft at 7:15AM Dec 01, 2022Observed: 3.09 ft at 7:30AM Dec 01, 2022Observed: 3.09 ft at 7:45AM Dec 01, 2022Observed: 3.09 ft at 8:00AM Dec 01, 2022Observed: 3.09 ft at 8:15AM Dec 01, 2022Observed: 3.09 ft at 8:30AM Dec 01, 2022Observed: 3.08 ft at 8:45AM Dec 01, 2022Observed: 3.08 ft at 9:00AM Dec 01, 2022Observed: 3.07 ft at 9:15AM Dec 01, 2022Observed: 3.07 ft at 9:30AM Dec 01, 2022Observed: 3.06 ft at 9:45AM Dec 01, 2022Observed: 3.05 ft at 10:00AM Dec 01, 2022Observed: 3.05 ft at 10:15AM Dec 01, 2022Observed: 3.05 ft at 10:30AM Dec 01, 2022Observed: 3.04 ft at 10:45AM Dec 01, 2022Observed: 3.04 ft at 11:00AM Dec 01, 2022Observed: 3.04 ft at 11:15AM Dec 01, 2022Observed: 3.03 ft at 11:30AM Dec 01, 2022Observed: 3.03 ft at 11:45AM Dec 01, 2022Observed: 3.02 ft at 12:00PM Dec 01, 2022Observed: 3.02 ft at 12:15PM Dec 01, 2022Observed: 3.02 ft at 12:30PM Dec 01, 2022Observed: 3.02 ft at 12:45PM Dec 01, 2022Observed: 3.01 ft at 1:00PM Dec 01, 2022Observed: 3.01 ft at 1:15PM Dec 01, 2022Observed: 3.01 ft at 1:30PM Dec 01, 2022Observed: 3.01 ft at 1:45PM Dec 01, 2022Observed: 3 ft at 2:00PM Dec 01, 2022Observed: 3 ft at 2:15PM Dec 01, 2022Observed: 3 ft at 2:30PM Dec 01, 2022Observed: 3 ft at 2:45PM Dec 01, 2022Observed: 3 ft at 3:00PM Dec 01, 2022Observed: 2.99 ft at 3:15PM Dec 01, 2022Observed: 2.99 ft at 3:30PM Dec 01, 2022Observed: 2.99 ft at 3:45PM Dec 01, 2022Observed: 2.99 ft at 4:00PM Dec 01, 2022Observed: 2.99 ft at 4:15PM Dec 01, 2022Observed: 2.99 ft at 4:30PM Dec 01, 2022Observed: 2.98 ft at 4:45PM Dec 01, 2022Observed: 2.98 ft at 5:00PM Dec 01, 2022Observed: 2.98 ft at 5:15PM Dec 01, 2022Observed: 2.98 ft at 5:30PM Dec 01, 2022Observed: 2.98 ft at 5:45PM Dec 01, 2022Observed: 2.97 ft at 6:00PM Dec 01, 2022Observed: 2.97 ft at 6:15PM Dec 01, 2022Observed: 2.97 ft at 6:30PM Dec 01, 2022Observed: 2.97 ft at 6:45PM Dec 01, 2022Observed: 2.97 ft at 7:00PM Dec 01, 2022Observed: 2.97 ft at 7:15PM Dec 01, 2022Observed: 2.97 ft at 7:30PM Dec 01, 2022Observed: 2.97 ft at 7:45PM Dec 01, 2022Observed: 2.96 ft at 8:00PM Dec 01, 2022Observed: 2.96 ft at 8:15PM Dec 01, 2022Observed: 2.96 ft at 8:30PM Dec 01, 2022Observed: 2.96 ft at 8:45PM Dec 01, 2022Observed: 2.96 ft at 9:00PM Dec 01, 2022Observed: 2.96 ft at 9:15PM Dec 01, 2022Observed: 2.96 ft at 9:30PM Dec 01, 2022Observed: 2.96 ft at 9:45PM Dec 01, 2022Observed: 2.95 ft at 10:00PM Dec 01, 2022Observed: 2.95 ft at 10:15PM Dec 01, 2022Observed: 2.95 ft at 10:30PM Dec 01, 2022Observed: 2.95 ft at 10:45PM Dec 01, 2022Observed: 2.95 ft at 11:00PM Dec 01, 2022Observed: 2.95 ft at 11:15PM Dec 01, 2022Observed: 2.95 ft at 11:30PM Dec 01, 2022Observed: 2.95 ft at 11:45PM Dec 01, 2022Observed: 2.95 ft at 12:00AM Dec 02, 2022Observed: 2.95 ft at 12:15AM Dec 02, 2022Observed: 2.94 ft at 12:30AM Dec 02, 2022Observed: 2.94 ft at 12:45AM Dec 02, 2022Observed: 2.94 ft at 1:00AM Dec 02, 2022Observed: 2.94 ft at 1:15AM Dec 02, 2022Observed: 2.94 ft at 1:30AM Dec 02, 2022Observed: 2.94 ft at 1:45AM Dec 02, 2022Observed: 2.94 ft at 2:00AM Dec 02, 2022Observed: 2.93 ft at 2:15AM Dec 02, 2022Observed: 2.93 ft at 2:30AM Dec 02, 2022Observed: 2.93 ft at 2:45AM Dec 02, 2022Observed: 2.93 ft at 3:00AM Dec 02, 2022Observed: 2.93 ft at 3:15AM Dec 02, 2022Observed: 2.93 ft at 3:30AM Dec 02, 2022Observed: 2.93 ft at 3:45AM Dec 02, 2022Observed: 2.93 ft at 4:00AM Dec 02, 2022Observed: 2.93 ft at 4:15AM Dec 02, 2022Observed: 2.93 ft at 4:30AM Dec 02, 2022Observed: 2.93 ft at 4:45AM Dec 02, 2022Observed: 2.92 ft at 5:00AM Dec 02, 2022Observed: 2.92 ft at 5:15AM Dec 02, 2022Observed: 2.92 ft at 5:30AM Dec 02, 2022Observed: 2.92 ft at 5:45AM Dec 02, 2022Observed: 2.92 ft at 6:00AM Dec 02, 2022Observed: 2.92 ft at 6:15AM Dec 02, 2022Observed: 2.92 ft at 6:30AM Dec 02, 2022Observed: 2.92 ft at 6:45AM Dec 02, 2022Observed: 2.92 ft at 7:00AM Dec 02, 2022Observed: 2.92 ft at 7:15AM Dec 02, 2022Observed: 2.92 ft at 7:30AM Dec 02, 2022Observed: 2.92 ft at 7:45AM Dec 02, 2022Observed: 2.92 ft at 8:00AM Dec 02, 2022Observed: 2.92 ft at 8:15AM Dec 02, 2022Observed: 2.92 ft at 8:30AM Dec 02, 2022Observed: 2.92 ft at 8:45AM Dec 02, 2022Observed: 2.92 ft at 9:00AM Dec 02, 2022Observed: 2.92 ft at 9:15AM Dec 02, 2022Observed: 2.91 ft at 9:30AM Dec 02, 2022Observed: 2.91 ft at 9:45AM Dec 02, 2022Observed: 2.92 ft at 10:00AM Dec 02, 2022Observed: 2.92 ft at 10:15AM Dec 02, 2022USGS--Water Resources of the United StatesGFLV2(plotting HGIRG) Graph Created (10:56AM Dec 2, 2022)ObservedLatest observed value: 2.92 ft at 10:15 AM EST 2-Dec-2022. Flood Stage is 11 ft
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Tabular Data (UTC)
Tabular Data (EST)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Stage may be affected by ice.

NOTE: Forecasts are not available for the Difficult Run near Great Falls. Only observed stages are available for this point.

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Flood Categories (in feet)
Major Flood Stage: 20
Moderate Flood Stage: 13
Flood Stage: 11
Action Stage: 9
Low Stage (in feet): -9999

Historic Crests
(1) 21.40 ft on 06/22/1972
(2) 17.54 ft on 09/08/2011
(3) 16.62 ft on 09/06/2008
(4) 15.01 ft on 06/26/2006
(5) 13.82 ft on 09/26/1975
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 9.71 ft on 09/01/2021
(2) 12.95 ft on 07/08/2019
(3) 11.08 ft on 08/01/2018
(4) 12.99 ft on 07/22/2018
(5) 12.23 ft on 05/16/2014
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:15
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Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
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20 Water approaches structures near the stream.
13 Water reaches the intersection of Leigh Mill Road and Kelso Road.
11 Leigh Mill Road floods near Difficult Run.
About This Location Collapse

Latitude: 38.975833° N, Longitude: 77.246111° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 11 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 Not Available Not Available 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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