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Hydrograph River at a Glance Download
Difficult Run near Great Falls Stage (ft)Flow (cfs)Observed: 2.75 ft at 9:45PM Sep 16, 2019Observed: 2.75 ft at 10:00PM Sep 16, 2019Observed: 2.75 ft at 10:15PM Sep 16, 2019Observed: 2.75 ft at 10:30PM Sep 16, 2019Observed: 2.75 ft at 10:45PM Sep 16, 2019Observed: 2.75 ft at 11:00PM Sep 16, 2019Observed: 2.75 ft at 11:15PM Sep 16, 2019Observed: 2.75 ft at 11:30PM Sep 16, 2019Observed: 2.75 ft at 11:45PM Sep 16, 2019Observed: 2.75 ft at 12:00AM Sep 17, 2019Observed: 2.75 ft at 12:15AM Sep 17, 2019Observed: 2.75 ft at 12:30AM Sep 17, 2019Observed: 2.75 ft at 12:45AM Sep 17, 2019Observed: 2.75 ft at 1:00AM Sep 17, 2019Observed: 2.75 ft at 1:15AM Sep 17, 2019Observed: 2.75 ft at 1:30AM Sep 17, 2019Observed: 2.75 ft at 1:45AM Sep 17, 2019Observed: 2.75 ft at 2:00AM Sep 17, 2019Observed: 2.74 ft at 2:15AM Sep 17, 2019Observed: 2.74 ft at 2:30AM Sep 17, 2019Observed: 2.74 ft at 2:45AM Sep 17, 2019Observed: 2.74 ft at 3:00AM Sep 17, 2019Observed: 2.74 ft at 3:15AM Sep 17, 2019Observed: 2.74 ft at 3:30AM Sep 17, 2019Observed: 2.74 ft at 3:45AM Sep 17, 2019Observed: 2.74 ft at 4:00AM Sep 17, 2019Observed: 2.74 ft at 4:15AM Sep 17, 2019Observed: 2.74 ft at 4:30AM Sep 17, 2019Observed: 2.74 ft at 4:45AM Sep 17, 2019Observed: 2.74 ft at 5:00AM Sep 17, 2019Observed: 2.74 ft at 5:15AM Sep 17, 2019Observed: 2.75 ft at 5:30AM Sep 17, 2019Observed: 2.75 ft at 5:45AM Sep 17, 2019Observed: 2.75 ft at 6:00AM Sep 17, 2019Observed: 2.75 ft at 6:15AM Sep 17, 2019Observed: 2.75 ft at 6:30AM Sep 17, 2019Observed: 2.75 ft at 6:45AM Sep 17, 2019Observed: 2.75 ft at 7:00AM Sep 17, 2019Observed: 2.75 ft at 7:15AM Sep 17, 2019Observed: 2.75 ft at 7:30AM Sep 17, 2019Observed: 2.75 ft at 7:45AM Sep 17, 2019Observed: 2.75 ft at 8:00AM Sep 17, 2019Observed: 2.75 ft at 8:15AM Sep 17, 2019Observed: 2.75 ft at 8:30AM Sep 17, 2019Observed: 2.75 ft at 8:45AM Sep 17, 2019Observed: 2.75 ft at 9:00AM Sep 17, 2019Observed: 2.75 ft at 9:15AM Sep 17, 2019Observed: 2.75 ft at 9:30AM Sep 17, 2019Observed: 2.76 ft at 9:45AM Sep 17, 2019Highest Observation: 2.77 ft at 10:00AM Sep 17, 2019Highest Observation: 2.77 ft at 10:15AM Sep 17, 2019Highest Observation: 2.77 ft at 10:30AM Sep 17, 2019Highest Observation: 2.77 ft at 10:45AM Sep 17, 2019Highest Observation: 2.77 ft at 11:00AM Sep 17, 2019Highest Observation: 2.77 ft at 11:15AM Sep 17, 2019Highest Observation: 2.77 ft at 11:30AM Sep 17, 2019Highest Observation: 2.77 ft at 11:45AM Sep 17, 2019Highest Observation: 2.77 ft at 12:00PM Sep 17, 2019Highest Observation: 2.77 ft at 12:15PM Sep 17, 2019Highest Observation: 2.77 ft at 12:30PM Sep 17, 2019Highest Observation: 2.77 ft at 12:45PM Sep 17, 2019Observed: 2.76 ft at 1:00PM Sep 17, 2019Observed: 2.76 ft at 1:15PM Sep 17, 2019Observed: 2.76 ft at 1:30PM Sep 17, 2019Observed: 2.76 ft at 1:45PM Sep 17, 2019Observed: 2.76 ft at 2:00PM Sep 17, 2019Observed: 2.76 ft at 2:15PM Sep 17, 2019Observed: 2.76 ft at 2:30PM Sep 17, 2019Observed: 2.76 ft at 2:45PM Sep 17, 2019Observed: 2.76 ft at 3:00PM Sep 17, 2019Observed: 2.76 ft at 3:15PM Sep 17, 2019Observed: 2.76 ft at 3:30PM Sep 17, 2019Observed: 2.76 ft at 3:45PM Sep 17, 2019Observed: 2.76 ft at 4:00PM Sep 17, 2019Observed: 2.75 ft at 4:15PM Sep 17, 2019Observed: 2.75 ft at 4:30PM Sep 17, 2019Observed: 2.75 ft at 4:45PM Sep 17, 2019Observed: 2.76 ft at 5:00PM Sep 17, 2019Observed: 2.76 ft at 5:15PM Sep 17, 2019Observed: 2.75 ft at 5:30PM Sep 17, 2019Observed: 2.74 ft at 5:45PM Sep 17, 2019Observed: 2.74 ft at 6:00PM Sep 17, 2019Observed: 2.73 ft at 6:15PM Sep 17, 2019Observed: 2.73 ft at 6:30PM Sep 17, 2019Observed: 2.73 ft at 6:45PM Sep 17, 2019Observed: 2.73 ft at 7:00PM Sep 17, 2019Observed: 2.73 ft at 7:15PM Sep 17, 2019Observed: 2.73 ft at 7:30PM Sep 17, 2019Observed: 2.73 ft at 7:45PM Sep 17, 2019Observed: 2.73 ft at 8:00PM Sep 17, 2019Observed: 2.73 ft at 8:15PM Sep 17, 2019Observed: 2.73 ft at 8:30PM Sep 17, 2019Observed: 2.73 ft at 8:45PM Sep 17, 2019Observed: 2.73 ft at 9:00PM Sep 17, 2019Observed: 2.73 ft at 9:15PM Sep 17, 2019Observed: 2.73 ft at 9:30PM Sep 17, 2019Observed: 2.73 ft at 9:45PM Sep 17, 2019Observed: 2.73 ft at 10:00PM Sep 17, 2019Observed: 2.73 ft at 10:15PM Sep 17, 2019Observed: 2.73 ft at 10:30PM Sep 17, 2019Observed: 2.73 ft at 10:45PM Sep 17, 2019Observed: 2.73 ft at 11:00PM Sep 17, 2019Observed: 2.73 ft at 11:15PM Sep 17, 2019Observed: 2.73 ft at 11:30PM Sep 17, 2019Observed: 2.73 ft at 11:45PM Sep 17, 2019Observed: 2.73 ft at 12:00AM Sep 18, 2019Observed: 2.73 ft at 12:15AM Sep 18, 2019Observed: 2.73 ft at 12:30AM Sep 18, 2019Observed: 2.73 ft at 12:45AM Sep 18, 2019Observed: 2.73 ft at 1:00AM Sep 18, 2019Observed: 2.73 ft at 1:15AM Sep 18, 2019Observed: 2.73 ft at 1:30AM Sep 18, 2019Observed: 2.73 ft at 1:45AM Sep 18, 2019Observed: 2.73 ft at 2:00AM Sep 18, 2019Observed: 2.73 ft at 2:15AM Sep 18, 2019Observed: 2.73 ft at 2:30AM Sep 18, 2019Observed: 2.73 ft at 2:45AM Sep 18, 2019Observed: 2.73 ft at 3:00AM Sep 18, 2019Observed: 2.73 ft at 3:15AM Sep 18, 2019Observed: 2.73 ft at 3:30AM Sep 18, 2019Observed: 2.73 ft at 3:45AM Sep 18, 2019Observed: 2.72 ft at 4:00AM Sep 18, 2019Observed: 2.72 ft at 4:15AM Sep 18, 2019Observed: 2.73 ft at 4:30AM Sep 18, 2019Observed: 2.73 ft at 4:45AM Sep 18, 2019Observed: 2.73 ft at 5:00AM Sep 18, 2019Observed: 2.73 ft at 5:15AM Sep 18, 2019Observed: 2.73 ft at 5:30AM Sep 18, 2019Observed: 2.73 ft at 5:45AM Sep 18, 2019Observed: 2.73 ft at 6:00AM Sep 18, 2019Observed: 2.73 ft at 6:15AM Sep 18, 2019Observed: 2.73 ft at 6:30AM Sep 18, 2019Observed: 2.73 ft at 6:45AM Sep 18, 2019Observed: 2.73 ft at 7:00AM Sep 18, 2019Observed: 2.73 ft at 7:15AM Sep 18, 2019Observed: 2.73 ft at 7:30AM Sep 18, 2019Observed: 2.73 ft at 7:45AM Sep 18, 2019Observed: 2.73 ft at 8:00AM Sep 18, 2019Observed: 2.73 ft at 8:15AM Sep 18, 2019Observed: 2.73 ft at 8:30AM Sep 18, 2019Observed: 2.73 ft at 8:45AM Sep 18, 2019Observed: 2.73 ft at 9:00AM Sep 18, 2019Observed: 2.74 ft at 9:15AM Sep 18, 2019Observed: 2.75 ft at 9:30AM Sep 18, 2019Observed: 2.76 ft at 9:45AM Sep 18, 2019Observed: 2.76 ft at 10:00AM Sep 18, 2019Observed: 2.76 ft at 10:15AM Sep 18, 2019Observed: 2.76 ft at 10:30AM Sep 18, 2019Observed: 2.76 ft at 10:45AM Sep 18, 2019Observed: 2.76 ft at 11:00AM Sep 18, 2019Observed: 2.75 ft at 11:15AM Sep 18, 2019Observed: 2.75 ft at 11:30AM Sep 18, 2019Observed: 2.75 ft at 11:45AM Sep 18, 2019Observed: 2.75 ft at 12:00PM Sep 18, 2019Observed: 2.75 ft at 12:15PM Sep 18, 2019Observed: 2.75 ft at 12:30PM Sep 18, 2019Observed: 2.75 ft at 12:45PM Sep 18, 2019Observed: 2.75 ft at 1:00PM Sep 18, 2019Observed: 2.76 ft at 1:15PM Sep 18, 2019Observed: 2.76 ft at 1:30PM Sep 18, 2019Observed: 2.76 ft at 1:45PM Sep 18, 2019Observed: 2.76 ft at 2:00PM Sep 18, 2019Observed: 2.76 ft at 2:15PM Sep 18, 2019Observed: 2.75 ft at 2:30PM Sep 18, 2019Observed: 2.75 ft at 2:45PM Sep 18, 2019Observed: 2.74 ft at 3:00PM Sep 18, 2019Observed: 2.73 ft at 3:15PM Sep 18, 2019Observed: 2.72 ft at 3:30PM Sep 18, 2019Observed: 2.72 ft at 3:45PM Sep 18, 2019Observed: 2.72 ft at 4:00PM Sep 18, 2019Observed: 2.72 ft at 4:15PM Sep 18, 2019Observed: 2.72 ft at 4:30PM Sep 18, 2019Observed: 2.72 ft at 4:45PM Sep 18, 2019Observed: 2.72 ft at 5:00PM Sep 18, 2019Observed: 2.72 ft at 5:15PM Sep 18, 2019Observed: 2.72 ft at 5:30PM Sep 18, 2019Observed: 2.72 ft at 5:45PM Sep 18, 2019Observed: 2.72 ft at 6:00PM Sep 18, 2019Observed: 2.72 ft at 6:15PM Sep 18, 2019Observed: 2.72 ft at 6:30PM Sep 18, 2019Observed: 2.72 ft at 6:45PM Sep 18, 2019Observed: 2.72 ft at 7:00PM Sep 18, 2019Observed: 2.71 ft at 7:15PM Sep 18, 2019Observed: 2.71 ft at 7:30PM Sep 18, 2019Observed: 2.71 ft at 7:45PM Sep 18, 2019Observed: 2.71 ft at 8:00PM Sep 18, 2019Observed: 2.71 ft at 8:15PM Sep 18, 2019Observed: 2.71 ft at 8:30PM Sep 18, 2019Observed: 2.71 ft at 8:45PM Sep 18, 2019Observed: 2.71 ft at 9:00PM Sep 18, 2019Observed: 2.71 ft at 9:15PM Sep 18, 2019Observed: 2.71 ft at 9:30PM Sep 18, 2019Observed: 2.71 ft at 9:45PM Sep 18, 2019Observed: 2.71 ft at 10:00PM Sep 18, 2019Observed: 2.71 ft at 10:15PM Sep 18, 2019Observed: 2.72 ft at 10:30PM Sep 18, 2019Observed: 2.72 ft at 10:45PM Sep 18, 2019Observed: 2.72 ft at 11:00PM Sep 18, 2019Observed: 2.72 ft at 11:15PM Sep 18, 2019Observed: 2.72 ft at 11:30PM Sep 18, 2019Observed: 2.72 ft at 11:45PM Sep 18, 2019Observed: 2.72 ft at 12:00AM Sep 19, 2019Observed: 2.72 ft at 12:15AM Sep 19, 2019Observed: 2.72 ft at 12:30AM Sep 19, 2019Observed: 2.72 ft at 12:45AM Sep 19, 2019Observed: 2.72 ft at 1:00AM Sep 19, 2019Observed: 2.72 ft at 1:15AM Sep 19, 2019Observed: 2.72 ft at 1:30AM Sep 19, 2019Observed: 2.72 ft at 1:45AM Sep 19, 2019Observed: 2.72 ft at 2:00AM Sep 19, 2019Observed: 2.72 ft at 2:15AM Sep 19, 2019Observed: 2.72 ft at 2:30AM Sep 19, 2019Observed: 2.72 ft at 2:45AM Sep 19, 2019Observed: 2.72 ft at 3:00AM Sep 19, 2019Observed: 2.72 ft at 3:15AM Sep 19, 2019Observed: 2.72 ft at 3:30AM Sep 19, 2019Observed: 2.72 ft at 3:45AM Sep 19, 2019Observed: 2.72 ft at 4:00AM Sep 19, 2019Observed: 2.72 ft at 4:15AM Sep 19, 2019Observed: 2.73 ft at 4:30AM Sep 19, 2019Observed: 2.73 ft at 4:45AM Sep 19, 2019Observed: 2.73 ft at 5:00AM Sep 19, 2019Observed: 2.73 ft at 5:15AM Sep 19, 2019Observed: 2.73 ft at 5:30AM Sep 19, 2019Observed: 2.73 ft at 5:45AM Sep 19, 2019Observed: 2.73 ft at 6:00AM Sep 19, 2019Observed: 2.73 ft at 6:15AM Sep 19, 2019Observed: 2.73 ft at 6:30AM Sep 19, 2019Observed: 2.73 ft at 6:45AM Sep 19, 2019Observed: 2.72 ft at 7:00AM Sep 19, 2019Observed: 2.72 ft at 7:15AM Sep 19, 2019Observed: 2.72 ft at 7:30AM Sep 19, 2019Observed: 2.72 ft at 7:45AM Sep 19, 2019Observed: 2.72 ft at 8:00AM Sep 19, 2019Observed: 2.72 ft at 8:15AM Sep 19, 2019Observed: 2.72 ft at 8:30AM Sep 19, 2019Observed: 2.72 ft at 8:45AM Sep 19, 2019Observed: 2.72 ft at 9:00AM Sep 19, 2019Observed: 2.72 ft at 9:15AM Sep 19, 2019Observed: 2.75 ft at 10:30AM Sep 19, 2019Observed: 2.75 ft at 10:45AM Sep 19, 2019Observed: 2.75 ft at 11:00AM Sep 19, 2019Observed: 2.75 ft at 11:15AM Sep 19, 2019Observed: 2.75 ft at 11:30AM Sep 19, 2019Observed: 2.75 ft at 11:45AM Sep 19, 2019Observed: 2.75 ft at 12:00PM Sep 19, 2019Observed: 2.74 ft at 12:15PM Sep 19, 2019Observed: 2.73 ft at 12:30PM Sep 19, 2019Observed: 2.73 ft at 12:45PM Sep 19, 2019Observed: 2.73 ft at 1:00PM Sep 19, 2019Observed: 2.74 ft at 1:15PM Sep 19, 2019Observed: 2.74 ft at 1:30PM Sep 19, 2019Observed: 2.74 ft at 1:45PM Sep 19, 2019Observed: 2.74 ft at 2:00PM Sep 19, 2019Observed: 2.73 ft at 2:15PM Sep 19, 2019Observed: 2.73 ft at 2:30PM Sep 19, 2019Observed: 2.73 ft at 2:45PM Sep 19, 2019Observed: 2.73 ft at 3:00PM Sep 19, 2019Observed: 2.73 ft at 3:15PM Sep 19, 2019Observed: 2.73 ft at 3:30PM Sep 19, 2019Observed: 2.73 ft at 3:45PM Sep 19, 2019Observed: 2.73 ft at 4:00PM Sep 19, 2019Observed: 2.73 ft at 4:15PM Sep 19, 2019Observed: 2.73 ft at 4:30PM Sep 19, 2019Observed: 2.73 ft at 4:45PM Sep 19, 2019Observed: 2.72 ft at 5:00PM Sep 19, 2019Observed: 2.72 ft at 5:15PM Sep 19, 2019Observed: 2.71 ft at 5:30PM Sep 19, 2019Observed: 2.71 ft at 5:45PM Sep 19, 2019Observed: 2.71 ft at 6:00PM Sep 19, 2019Observed: 2.71 ft at 6:15PM Sep 19, 2019Observed: 2.71 ft at 6:30PM Sep 19, 2019Observed: 2.7 ft at 6:45PM Sep 19, 2019Observed: 2.7 ft at 7:00PM Sep 19, 2019Observed: 2.7 ft at 7:15PM Sep 19, 2019Observed: 2.7 ft at 7:30PM Sep 19, 2019Observed: 2.7 ft at 7:45PM Sep 19, 2019Observed: 2.7 ft at 8:00PM Sep 19, 2019Observed: 2.7 ft at 8:15PM Sep 19, 2019Observed: 2.7 ft at 8:30PM Sep 19, 2019Observed: 2.7 ft at 8:45PM Sep 19, 2019Observed: 2.71 ft at 9:00PM Sep 19, 2019Observed: 2.71 ft at 9:15PM Sep 19, 2019Observed: 2.71 ft at 9:30PM Sep 19, 2019Observed: 2.71 ft at 9:45PM Sep 19, 2019Observed: 2.71 ft at 10:00PM Sep 19, 2019Observed: 2.71 ft at 10:15PM Sep 19, 2019Observed: 2.71 ft at 10:30PM Sep 19, 2019Observed: 2.71 ft at 10:45PM Sep 19, 2019Observed: 2.71 ft at 11:00PM Sep 19, 2019Observed: 2.71 ft at 11:15PM Sep 19, 2019Observed: 2.71 ft at 11:30PM Sep 19, 2019Observed: 2.71 ft at 11:45PM Sep 19, 2019Observed: 2.71 ft at 12:00AM Sep 20, 2019Observed: 2.71 ft at 12:15AM Sep 20, 2019Observed: 2.71 ft at 12:30AM Sep 20, 2019Observed: 2.71 ft at 12:45AM Sep 20, 2019Observed: 2.71 ft at 1:00AM Sep 20, 2019Observed: 2.71 ft at 1:15AM Sep 20, 2019Observed: 2.71 ft at 1:30AM Sep 20, 2019Observed: 2.71 ft at 1:45AM Sep 20, 2019Observed: 2.7 ft at 2:00AM Sep 20, 2019Observed: 2.7 ft at 2:15AM Sep 20, 2019Observed: 2.7 ft at 2:30AM Sep 20, 2019Observed: 2.7 ft at 2:45AM Sep 20, 2019Observed: 2.7 ft at 3:00AM Sep 20, 2019Observed: 2.7 ft at 3:15AM Sep 20, 2019Observed: 2.7 ft at 3:30AM Sep 20, 2019Observed: 2.7 ft at 3:45AM Sep 20, 2019Observed: 2.7 ft at 4:00AM Sep 20, 2019Observed: 2.7 ft at 4:15AM Sep 20, 2019Observed: 2.7 ft at 4:30AM Sep 20, 2019Observed: 2.7 ft at 4:45AM Sep 20, 2019Observed: 2.7 ft at 5:00AM Sep 20, 2019Observed: 2.7 ft at 5:15AM Sep 20, 2019Observed: 2.7 ft at 5:30AM Sep 20, 2019Observed: 2.7 ft at 5:45AM Sep 20, 2019Observed: 2.7 ft at 6:00AM Sep 20, 2019Observed: 2.7 ft at 6:15AM Sep 20, 2019Observed: 2.7 ft at 6:30AM Sep 20, 2019Observed: 2.7 ft at 6:45AM Sep 20, 2019Observed: 2.7 ft at 7:00AM Sep 20, 2019Observed: 2.7 ft at 7:15AM Sep 20, 2019Observed: 2.7 ft at 7:30AM Sep 20, 2019Observed: 2.7 ft at 7:45AM Sep 20, 2019Observed: 2.7 ft at 8:00AM Sep 20, 2019Observed: 2.7 ft at 8:15AM Sep 20, 2019Observed: 2.7 ft at 8:30AM Sep 20, 2019Observed: 2.7 ft at 8:45AM Sep 20, 2019Observed: 2.7 ft at 9:00AM Sep 20, 2019Observed: 2.71 ft at 9:15AM Sep 20, 2019Observed: 2.72 ft at 9:30AM Sep 20, 2019Observed: 2.72 ft at 9:45AM Sep 20, 2019Observed: 2.74 ft at 10:00AM Sep 20, 2019Observed: 2.74 ft at 10:15AM Sep 20, 2019Observed: 2.74 ft at 10:30AM Sep 20, 2019Observed: 2.74 ft at 10:45AM Sep 20, 2019Observed: 2.74 ft at 11:00AM Sep 20, 2019Observed: 2.73 ft at 11:15AM Sep 20, 2019Observed: 2.73 ft at 11:30AM Sep 20, 2019Observed: 2.73 ft at 11:45AM Sep 20, 2019Observed: 2.73 ft at 12:00PM Sep 20, 2019Observed: 2.73 ft at 12:15PM Sep 20, 2019Observed: 2.72 ft at 12:30PM Sep 20, 2019Observed: 2.72 ft at 12:45PM Sep 20, 2019Observed: 2.72 ft at 1:00PM Sep 20, 2019Observed: 2.72 ft at 1:15PM Sep 20, 2019Observed: 2.72 ft at 1:30PM Sep 20, 2019Observed: 2.72 ft at 1:45PM Sep 20, 2019Observed: 2.72 ft at 2:00PM Sep 20, 2019Observed: 2.72 ft at 2:15PM Sep 20, 2019Observed: 2.72 ft at 2:30PM Sep 20, 2019Observed: 2.72 ft at 2:45PM Sep 20, 2019Observed: 2.72 ft at 3:00PM Sep 20, 2019Observed: 2.72 ft at 3:15PM Sep 20, 2019Observed: 2.72 ft at 3:30PM Sep 20, 2019Observed: 2.72 ft at 3:45PM Sep 20, 2019Observed: 2.72 ft at 4:00PM Sep 20, 2019Observed: 2.72 ft at 4:15PM Sep 20, 2019Observed: 2.72 ft at 4:30PM Sep 20, 2019Observed: 2.72 ft at 4:45PM Sep 20, 2019Observed: 2.71 ft at 5:00PM Sep 20, 2019Observed: 2.7 ft at 5:15PM Sep 20, 2019Observed: 2.69 ft at 5:30PM Sep 20, 2019Observed: 2.69 ft at 5:45PM Sep 20, 2019Observed: 2.69 ft at 6:00PM Sep 20, 2019Observed: 2.69 ft at 6:15PM Sep 20, 2019Observed: 2.69 ft at 6:30PM Sep 20, 2019Observed: 2.69 ft at 6:45PM Sep 20, 2019Observed: 2.69 ft at 7:00PM Sep 20, 2019Observed: 2.69 ft at 7:15PM Sep 20, 2019Observed: 2.69 ft at 7:30PM Sep 20, 2019Observed: 2.69 ft at 7:45PM Sep 20, 2019Observed: 2.7 ft at 8:00PM Sep 20, 2019Observed: 2.7 ft at 8:15PM Sep 20, 2019Observed: 2.7 ft at 8:30PM Sep 20, 2019Observed: 2.7 ft at 8:45PM Sep 20, 2019Observed: 2.69 ft at 9:00PM Sep 20, 2019Observed: 2.7 ft at 9:15PM Sep 20, 2019Observed: 2.7 ft at 9:30PM Sep 20, 2019Observed: 2.69 ft at 9:45PM Sep 20, 2019Observed: 2.7 ft at 10:00PM Sep 20, 2019Observed: 2.7 ft at 10:15PM Sep 20, 2019Observed: 2.69 ft at 10:30PM Sep 20, 2019Observed: 2.7 ft at 10:45PM Sep 20, 2019Observed: 2.7 ft at 11:00PM Sep 20, 2019Observed: 2.69 ft at 11:15PM Sep 20, 2019Observed: 2.69 ft at 11:30PM Sep 20, 2019Observed: 2.7 ft at 11:45PM Sep 20, 2019Observed: 2.7 ft at 12:00AM Sep 21, 2019Observed: 2.7 ft at 12:15AM Sep 21, 2019Observed: 2.7 ft at 12:30AM Sep 21, 2019Observed: 2.7 ft at 12:45AM Sep 21, 2019Observed: 2.7 ft at 1:00AM Sep 21, 2019Observed: 2.7 ft at 1:15AM Sep 21, 2019Observed: 2.7 ft at 1:30AM Sep 21, 2019Observed: 2.7 ft at 1:45AM Sep 21, 2019Observed: 2.7 ft at 2:00AM Sep 21, 2019Observed: 2.7 ft at 2:15AM Sep 21, 2019Observed: 2.69 ft at 2:30AM Sep 21, 2019Observed: 2.69 ft at 2:45AM Sep 21, 2019Observed: 2.69 ft at 3:00AM Sep 21, 2019Observed: 2.69 ft at 3:15AM Sep 21, 2019Observed: 2.69 ft at 3:30AM Sep 21, 2019Observed: 2.69 ft at 3:45AM Sep 21, 2019Observed: 2.69 ft at 4:00AM Sep 21, 2019Observed: 2.69 ft at 4:15AM Sep 21, 2019Observed: 2.69 ft at 4:30AM Sep 21, 2019Observed: 2.69 ft at 4:45AM Sep 21, 2019Observed: 2.69 ft at 5:00AM Sep 21, 2019Observed: 2.69 ft at 5:15AM Sep 21, 2019Observed: 2.69 ft at 5:30AM Sep 21, 2019Observed: 2.69 ft at 5:45AM Sep 21, 2019Observed: 2.69 ft at 6:00AM Sep 21, 2019Observed: 2.69 ft at 6:15AM Sep 21, 2019Observed: 2.69 ft at 6:30AM Sep 21, 2019Observed: 2.69 ft at 6:45AM Sep 21, 2019Observed: 2.69 ft at 7:00AM Sep 21, 2019Observed: 2.69 ft at 7:15AM Sep 21, 2019Observed: 2.69 ft at 7:30AM Sep 21, 2019Observed: 2.69 ft at 7:45AM Sep 21, 2019Observed: 2.69 ft at 8:00AM Sep 21, 2019Observed: 2.69 ft at 8:15AM Sep 21, 2019Observed: 2.69 ft at 8:30AM Sep 21, 2019Observed: 2.69 ft at 8:45AM Sep 21, 2019Observed: 2.69 ft at 9:00AM Sep 21, 2019Observed: 2.69 ft at 9:15AM Sep 21, 2019Observed: 2.7 ft at 9:30AM Sep 21, 2019Observed: 2.71 ft at 9:45AM Sep 21, 2019Observed: 2.71 ft at 10:00AM Sep 21, 2019Observed: 2.72 ft at 10:15AM Sep 21, 2019Observed: 2.72 ft at 10:30AM Sep 21, 2019Observed: 2.72 ft at 10:45AM Sep 21, 2019Observed: 2.72 ft at 11:00AM Sep 21, 2019Observed: 2.72 ft at 11:15AM Sep 21, 2019Observed: 2.73 ft at 11:30AM Sep 21, 2019Observed: 2.73 ft at 11:45AM Sep 21, 2019Observed: 2.73 ft at 12:00PM Sep 21, 2019Observed: 2.73 ft at 12:15PM Sep 21, 2019Observed: 2.73 ft at 12:30PM Sep 21, 2019Observed: 2.73 ft at 12:45PM Sep 21, 2019Observed: 2.72 ft at 1:00PM Sep 21, 2019Observed: 2.72 ft at 1:15PM Sep 21, 2019Observed: 2.72 ft at 1:30PM Sep 21, 2019Observed: 2.72 ft at 1:45PM Sep 21, 2019Observed: 2.72 ft at 2:00PM Sep 21, 2019Observed: 2.72 ft at 2:15PM Sep 21, 2019Observed: 2.72 ft at 2:30PM Sep 21, 2019Observed: 2.72 ft at 2:45PM Sep 21, 2019Observed: 2.72 ft at 3:00PM Sep 21, 2019Observed: 2.71 ft at 3:15PM Sep 21, 2019Observed: 2.71 ft at 3:30PM Sep 21, 2019Observed: 2.71 ft at 3:45PM Sep 21, 2019Observed: 2.71 ft at 4:00PM Sep 21, 2019Observed: 2.71 ft at 4:15PM Sep 21, 2019Observed: 2.71 ft at 4:30PM Sep 21, 2019Observed: 2.71 ft at 4:45PM Sep 21, 2019Observed: 2.7 ft at 5:00PM Sep 21, 2019Observed: 2.69 ft at 5:15PM Sep 21, 2019Observed: 2.69 ft at 5:30PM Sep 21, 2019Observed: 2.69 ft at 5:45PM Sep 21, 2019Observed: 2.69 ft at 6:00PM Sep 21, 2019Observed: 2.69 ft at 6:15PM Sep 21, 2019Observed: 2.69 ft at 6:30PM Sep 21, 2019Observed: 2.69 ft at 6:45PM Sep 21, 2019Observed: 2.69 ft at 7:00PM Sep 21, 2019Observed: 2.69 ft at 7:15PM Sep 21, 2019Observed: 2.69 ft at 7:30PM Sep 21, 2019Observed: 2.69 ft at 7:45PM Sep 21, 2019Observed: 2.69 ft at 8:00PM Sep 21, 2019Observed: 2.69 ft at 8:15PM Sep 21, 2019USGS--Water Resources of the United StatesGFLV2(plotting HGIRG) Graph Created (9:39PM Sep 21, 2019)ObservedLatest observed value: 2.69 ft at 8:15 PM EDT 21-Sep-2019. Flood Stage is 11 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts are not available for the Difficult Run near Great Falls. Only observed stages are available for this point.
Return to Area Map
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) 11.08 ft on 08/01/2018
(2) 12.80 ft on 07/22/2018
(3) 12.23 ft on 05/16/2014
(4) 12.57 ft on 04/30/2014
(5) 9.99 ft on 10/30/2012
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(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.
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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.
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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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