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Hydrograph River at a Glance Download
Big Sioux River above Flandreau Stage (ft)Flow (cfs)Observed: 1530.9 ft at 6:00PM Jan 23, 2023Observed: 1530.9 ft at 6:15PM Jan 23, 2023Observed: 1530.9 ft at 6:30PM Jan 23, 2023Observed: 1530.9 ft at 6:45PM Jan 23, 2023Observed: 1530.89 ft at 7:00PM Jan 23, 2023Observed: 1530.89 ft at 7:15PM Jan 23, 2023Observed: 1530.89 ft at 7:30PM Jan 23, 2023Observed: 1530.89 ft at 7:45PM Jan 23, 2023Observed: 1530.89 ft at 8:00PM Jan 23, 2023Observed: 1530.9 ft at 8:15PM Jan 23, 2023Observed: 1530.9 ft at 8:30PM Jan 23, 2023Observed: 1530.89 ft at 8:45PM Jan 23, 2023Observed: 1530.89 ft at 9:00PM Jan 23, 2023Observed: 1530.89 ft at 9:15PM Jan 23, 2023Observed: 1530.89 ft at 9:30PM Jan 23, 2023Observed: 1530.89 ft at 9:45PM Jan 23, 2023Observed: 1530.9 ft at 10:00PM Jan 23, 2023Observed: 1530.89 ft at 10:15PM Jan 23, 2023Observed: 1530.9 ft at 10:30PM Jan 23, 2023Observed: 1530.9 ft at 10:45PM Jan 23, 2023Observed: 1530.9 ft at 11:00PM Jan 23, 2023Observed: 1530.89 ft at 11:15PM Jan 23, 2023Observed: 1530.89 ft at 11:30PM Jan 23, 2023Observed: 1530.89 ft at 11:45PM Jan 23, 2023Observed: 1530.89 ft at 12:00AM Jan 24, 2023Observed: 1530.89 ft at 12:15AM Jan 24, 2023Observed: 1530.89 ft at 12:30AM Jan 24, 2023Observed: 1530.89 ft at 12:45AM Jan 24, 2023Observed: 1530.89 ft at 1:00AM Jan 24, 2023Observed: 1530.89 ft at 1:15AM Jan 24, 2023Observed: 1530.89 ft at 1:30AM Jan 24, 2023Observed: 1530.89 ft at 1:45AM Jan 24, 2023Observed: 1530.89 ft at 2:00AM Jan 24, 2023Observed: 1530.89 ft at 2:15AM Jan 24, 2023Observed: 1530.89 ft at 2:30AM Jan 24, 2023Observed: 1530.89 ft at 2:45AM Jan 24, 2023Observed: 1530.89 ft at 3:00AM Jan 24, 2023Observed: 1530.89 ft at 3:15AM Jan 24, 2023Observed: 1530.89 ft at 3:30AM Jan 24, 2023Observed: 1530.89 ft at 3:45AM Jan 24, 2023Observed: 1530.89 ft at 4:00AM Jan 24, 2023Observed: 1530.89 ft at 4:15AM Jan 24, 2023Observed: 1530.89 ft at 4:30AM Jan 24, 2023Observed: 1530.89 ft at 4:45AM Jan 24, 2023Observed: 1530.89 ft at 5:00AM Jan 24, 2023Observed: 1530.88 ft at 5:15AM Jan 24, 2023Observed: 1530.89 ft at 5:30AM Jan 24, 2023Observed: 1530.89 ft at 5:45AM Jan 24, 2023Observed: 1530.88 ft at 6:00AM Jan 24, 2023Observed: 1530.88 ft at 6:15AM Jan 24, 2023Observed: 1530.88 ft at 6:30AM Jan 24, 2023Observed: 1530.88 ft at 6:45AM Jan 24, 2023Observed: 1530.88 ft at 7:00AM Jan 24, 2023Observed: 1530.88 ft at 7:15AM Jan 24, 2023Observed: 1530.88 ft at 7:30AM Jan 24, 2023Observed: 1530.88 ft at 7:45AM Jan 24, 2023Observed: 1530.88 ft at 8:00AM Jan 24, 2023Observed: 1530.88 ft at 8:15AM Jan 24, 2023Observed: 1530.88 ft at 8:30AM Jan 24, 2023Observed: 1530.88 ft at 8:45AM Jan 24, 2023Observed: 1530.88 ft at 9:00AM Jan 24, 2023Observed: 1530.88 ft at 9:15AM Jan 24, 2023Observed: 1530.88 ft at 9:30AM Jan 24, 2023Observed: 1530.88 ft at 9:45AM Jan 24, 2023Observed: 1530.88 ft at 10:00AM Jan 24, 2023Observed: 1530.88 ft at 10:15AM Jan 24, 2023Observed: 1530.89 ft at 10:30AM Jan 24, 2023Observed: 1530.88 ft at 10:45AM Jan 24, 2023Observed: 1530.88 ft at 11:00AM Jan 24, 2023Observed: 1530.89 ft at 11:15AM Jan 24, 2023Observed: 1530.88 ft at 11:30AM Jan 24, 2023Observed: 1530.89 ft at 11:45AM Jan 24, 2023Observed: 1530.88 ft at 12:00PM Jan 24, 2023Observed: 1530.89 ft at 12:15PM Jan 24, 2023Observed: 1530.89 ft at 12:30PM Jan 24, 2023Observed: 1530.88 ft at 12:45PM Jan 24, 2023Observed: 1530.89 ft at 1:00PM Jan 24, 2023Observed: 1530.89 ft at 1:15PM Jan 24, 2023Observed: 1530.89 ft at 1:30PM Jan 24, 2023Observed: 1530.89 ft at 1:45PM Jan 24, 2023Observed: 1530.89 ft at 2:00PM Jan 24, 2023Observed: 1530.9 ft at 2:15PM Jan 24, 2023Observed: 1530.9 ft at 2:30PM Jan 24, 2023Observed: 1530.9 ft at 2:45PM Jan 24, 2023Observed: 1530.88 ft at 1:00AM Jan 25, 2023Observed: 1530.9 ft at 1:15AM Jan 25, 2023Observed: 1530.9 ft at 1:30AM Jan 25, 2023Observed: 1530.9 ft at 1:45AM Jan 25, 2023Observed: 1530.9 ft at 2:00AM Jan 25, 2023Observed: 1530.9 ft at 2:15AM Jan 25, 2023Observed: 1530.9 ft at 2:30AM Jan 25, 2023Observed: 1530.9 ft at 2:45AM Jan 25, 2023Observed: 1530.89 ft at 3:00AM Jan 25, 2023Observed: 1530.9 ft at 3:15AM Jan 25, 2023Observed: 1530.89 ft at 3:30AM Jan 25, 2023Observed: 1530.89 ft at 3:45AM Jan 25, 2023Observed: 1530.89 ft at 4:00AM Jan 25, 2023Observed: 1530.88 ft at 5:00AM Jan 25, 2023Observed: 1530.87 ft at 5:15AM Jan 25, 2023Observed: 1530.87 ft at 5:30AM Jan 25, 2023Observed: 1530.87 ft at 5:45AM Jan 25, 2023Observed: 1530.87 ft at 6:00AM Jan 25, 2023Observed: 1530.87 ft at 6:15AM Jan 25, 2023Observed: 1530.87 ft at 6:30AM Jan 25, 2023Observed: 1530.87 ft at 6:45AM Jan 25, 2023Observed: 1530.87 ft at 7:00AM Jan 25, 2023Observed: 1530.87 ft at 7:15AM Jan 25, 2023Observed: 1530.87 ft at 7:30AM Jan 25, 2023Observed: 1530.87 ft at 7:45AM Jan 25, 2023Observed: 1530.86 ft at 8:00AM Jan 25, 2023Observed: 1530.86 ft at 8:15AM Jan 25, 2023Observed: 1530.86 ft at 8:30AM Jan 25, 2023Observed: 1530.86 ft at 8:45AM Jan 25, 2023Observed: 1530.86 ft at 9:00AM Jan 25, 2023Observed: 1530.86 ft at 9:15AM Jan 25, 2023Observed: 1530.86 ft at 9:30AM Jan 25, 2023Observed: 1530.86 ft at 9:45AM Jan 25, 2023Observed: 1530.86 ft at 10:00AM Jan 25, 2023Observed: 1530.86 ft at 10:15AM Jan 25, 2023Observed: 1530.86 ft at 10:30AM Jan 25, 2023Observed: 1530.86 ft at 10:45AM Jan 25, 2023Observed: 1530.86 ft at 11:00AM Jan 25, 2023Observed: 1530.86 ft at 11:15AM Jan 25, 2023Observed: 1530.86 ft at 11:30AM Jan 25, 2023Observed: 1530.86 ft at 11:45AM Jan 25, 2023Observed: 1530.86 ft at 12:00PM Jan 25, 2023Observed: 1530.86 ft at 12:15PM Jan 25, 2023Observed: 1530.86 ft at 12:30PM Jan 25, 2023Observed: 1530.86 ft at 12:45PM Jan 25, 2023Observed: 1530.86 ft at 1:00PM Jan 25, 2023Observed: 1530.86 ft at 1:15PM Jan 25, 2023Observed: 1530.86 ft at 1:30PM Jan 25, 2023Observed: 1530.86 ft at 1:45PM Jan 25, 2023Observed: 1530.86 ft at 2:00PM Jan 25, 2023Observed: 1530.85 ft at 2:15PM Jan 25, 2023Observed: 1530.85 ft at 2:30PM Jan 25, 2023Observed: 1530.85 ft at 2:45PM Jan 25, 2023Observed: 1530.85 ft at 3:00PM Jan 25, 2023Observed: 1530.85 ft at 3:15PM Jan 25, 2023Observed: 1530.85 ft at 3:30PM Jan 25, 2023Observed: 1530.85 ft at 3:45PM Jan 25, 2023Observed: 1530.85 ft at 4:00PM Jan 25, 2023Observed: 1530.85 ft at 4:15PM Jan 25, 2023Observed: 1530.85 ft at 4:30PM Jan 25, 2023Observed: 1530.85 ft at 4:45PM Jan 25, 2023Observed: 1530.84 ft at 5:00PM Jan 25, 2023Observed: 1530.84 ft at 6:15PM Jan 25, 2023Observed: 1530.84 ft at 6:30PM Jan 25, 2023Observed: 1530.84 ft at 6:45PM Jan 25, 2023Observed: 1530.84 ft at 7:00PM Jan 25, 2023Observed: 1530.83 ft at 8:15PM Jan 25, 2023Observed: 1530.83 ft at 8:30PM Jan 25, 2023Observed: 1530.83 ft at 8:45PM Jan 25, 2023Observed: 1530.83 ft at 9:00PM Jan 25, 2023Observed: 1530.83 ft at 9:15PM Jan 25, 2023Observed: 1530.83 ft at 9:30PM Jan 25, 2023Observed: 1530.82 ft at 9:45PM Jan 25, 2023Observed: 1530.82 ft at 10:00PM Jan 25, 2023Observed: 1530.82 ft at 10:15PM Jan 25, 2023Observed: 1530.83 ft at 10:30PM Jan 25, 2023Observed: 1530.82 ft at 10:45PM Jan 25, 2023Observed: 1530.82 ft at 11:00PM Jan 25, 2023Observed: 1530.82 ft at 11:15PM Jan 25, 2023Observed: 1530.82 ft at 11:30PM Jan 25, 2023Observed: 1530.82 ft at 11:45PM Jan 25, 2023Observed: 1530.82 ft at 12:00AM Jan 26, 2023Observed: 1530.82 ft at 12:15AM Jan 26, 2023Observed: 1530.82 ft at 12:30AM Jan 26, 2023Observed: 1530.82 ft at 12:45AM Jan 26, 2023Observed: 1530.82 ft at 1:00AM Jan 26, 2023Observed: 1530.82 ft at 1:15AM Jan 26, 2023Observed: 1530.82 ft at 1:30AM Jan 26, 2023Observed: 1530.82 ft at 1:45AM Jan 26, 2023Observed: 1530.82 ft at 2:00AM Jan 26, 2023Observed: 1530.82 ft at 2:15AM Jan 26, 2023Observed: 1530.82 ft at 2:30AM Jan 26, 2023Observed: 1530.81 ft at 2:45AM Jan 26, 2023Observed: 1530.82 ft at 3:00AM Jan 26, 2023Observed: 1530.82 ft at 3:15AM Jan 26, 2023Observed: 1530.82 ft at 3:30AM Jan 26, 2023Observed: 1530.82 ft at 3:45AM Jan 26, 2023Observed: 1530.82 ft at 4:00AM Jan 26, 2023Observed: 1530.82 ft at 4:15AM Jan 26, 2023Observed: 1530.81 ft at 4:30AM Jan 26, 2023Observed: 1530.82 ft at 4:45AM Jan 26, 2023Observed: 1530.81 ft at 5:00AM Jan 26, 2023Observed: 1530.81 ft at 5:15AM Jan 26, 2023Observed: 1530.81 ft at 5:30AM Jan 26, 2023Observed: 1530.82 ft at 5:45AM Jan 26, 2023Observed: 1530.81 ft at 6:00AM Jan 26, 2023Observed: 1530.82 ft at 6:15AM Jan 26, 2023Observed: 1530.82 ft at 6:30AM Jan 26, 2023Observed: 1530.82 ft at 6:45AM Jan 26, 2023Observed: 1530.82 ft at 7:00AM Jan 26, 2023Observed: 1530.82 ft at 7:45AM Jan 26, 2023Observed: 1530.81 ft at 8:15AM Jan 26, 2023Observed: 1530.82 ft at 8:30AM Jan 26, 2023Observed: 1530.82 ft at 8:45AM Jan 26, 2023Observed: 1530.82 ft at 9:00AM Jan 26, 2023Observed: 1530.81 ft at 9:15AM Jan 26, 2023Observed: 1530.81 ft at 9:30AM Jan 26, 2023Observed: 1530.82 ft at 9:45AM Jan 26, 2023Observed: 1530.82 ft at 10:00AM Jan 26, 2023Observed: 1530.82 ft at 10:15AM Jan 26, 2023Observed: 1530.83 ft at 10:30AM Jan 26, 2023Observed: 1530.82 ft at 10:45AM Jan 26, 2023Observed: 1530.82 ft at 11:00AM Jan 26, 2023Observed: 1530.83 ft at 11:15AM Jan 26, 2023Observed: 1530.83 ft at 11:30AM Jan 26, 2023Observed: 1530.83 ft at 11:45AM Jan 26, 2023Observed: 1530.83 ft at 12:00PM Jan 26, 2023Observed: 1530.83 ft at 12:15PM Jan 26, 2023Observed: 1530.83 ft at 12:30PM Jan 26, 2023Observed: 1530.83 ft at 12:45PM Jan 26, 2023Observed: 1530.84 ft at 1:00PM Jan 26, 2023Observed: 1530.84 ft at 1:15PM Jan 26, 2023Observed: 1530.84 ft at 1:30PM Jan 26, 2023Observed: 1530.85 ft at 1:45PM Jan 26, 2023Observed: 1530.85 ft at 2:00PM Jan 26, 2023Observed: 1530.85 ft at 2:15PM Jan 26, 2023Observed: 1530.85 ft at 2:30PM Jan 26, 2023Observed: 1530.85 ft at 2:45PM Jan 26, 2023Observed: 1530.86 ft at 3:00PM Jan 26, 2023Observed: 1530.87 ft at 5:15PM Jan 26, 2023Observed: 1530.88 ft at 5:30PM Jan 26, 2023Observed: 1530.88 ft at 5:45PM Jan 26, 2023Observed: 1530.87 ft at 6:00PM Jan 26, 2023Observed: 1530.88 ft at 6:15PM Jan 26, 2023Observed: 1530.88 ft at 6:30PM Jan 26, 2023Observed: 1530.88 ft at 6:45PM Jan 26, 2023Observed: 1530.88 ft at 7:00PM Jan 26, 2023Observed: 1530.88 ft at 7:15PM Jan 26, 2023Observed: 1530.88 ft at 7:30PM Jan 26, 2023Observed: 1530.88 ft at 7:45PM Jan 26, 2023Observed: 1530.87 ft at 8:00PM Jan 26, 2023Observed: 1530.85 ft at 8:15PM Jan 26, 2023Observed: 1530.8 ft at 8:30PM Jan 26, 2023Observed: 1530.82 ft at 9:15PM Jan 26, 2023Observed: 1530.8 ft at 10:30PM Jan 26, 2023Observed: 1530.79 ft at 10:45PM Jan 26, 2023Observed: 1530.81 ft at 11:00PM Jan 26, 2023Observed: 1530.76 ft at 1:15AM Jan 27, 2023Observed: 1530.78 ft at 1:30AM Jan 27, 2023Observed: 1530.84 ft at 1:45AM Jan 27, 2023Observed: 1530.8 ft at 2:00AM Jan 27, 2023Observed: 1530.81 ft at 2:15AM Jan 27, 2023Observed: 1530.83 ft at 2:30AM Jan 27, 2023Observed: 1530.83 ft at 2:45AM Jan 27, 2023Observed: 1530.79 ft at 3:00AM Jan 27, 2023Observed: 1530.81 ft at 3:15AM Jan 27, 2023Observed: 1530.83 ft at 3:30AM Jan 27, 2023Observed: 1530.83 ft at 3:45AM Jan 27, 2023Observed: 1530.83 ft at 4:00AM Jan 27, 2023Observed: 1530.82 ft at 4:15AM Jan 27, 2023Observed: 1530.84 ft at 4:30AM Jan 27, 2023Observed: 1530.84 ft at 4:45AM Jan 27, 2023Observed: 1530.85 ft at 5:00AM Jan 27, 2023Observed: 1530.89 ft at 5:15AM Jan 27, 2023Observed: 1530.89 ft at 5:30AM Jan 27, 2023Observed: 1530.89 ft at 5:45AM Jan 27, 2023Observed: 1530.94 ft at 6:15AM Jan 27, 2023Observed: 1530.79 ft at 7:30AM Jan 27, 2023Observed: 1530.8 ft at 7:45AM Jan 27, 2023Observed: 1530.79 ft at 8:00AM Jan 27, 2023Observed: 1530.86 ft at 8:15AM Jan 27, 2023Observed: 1530.93 ft at 1:45PM Jan 27, 2023Observed: 1530.92 ft at 2:15PM Jan 27, 2023Observed: 1530.9 ft at 2:30PM Jan 27, 2023Observed: 1530.91 ft at 2:45PM Jan 27, 2023Observed: 1530.91 ft at 3:00PM Jan 27, 2023Observed: 1530.91 ft at 7:15PM Jan 27, 2023Observed: 1530.9 ft at 7:30PM Jan 27, 2023Observed: 1530.91 ft at 7:45PM Jan 27, 2023Observed: 1530.9 ft at 8:00PM Jan 27, 2023Observed: 1530.9 ft at 8:15PM Jan 27, 2023Observed: 1530.9 ft at 8:30PM Jan 27, 2023Observed: 1530.9 ft at 8:45PM Jan 27, 2023Observed: 1530.9 ft at 9:00PM Jan 27, 2023Observed: 1530.9 ft at 9:15PM Jan 27, 2023Observed: 1530.9 ft at 9:30PM Jan 27, 2023Observed: 1530.9 ft at 9:45PM Jan 27, 2023Observed: 1530.9 ft at 10:00PM Jan 27, 2023Observed: 1530.9 ft at 10:15PM Jan 27, 2023Observed: 1530.9 ft at 10:30PM Jan 27, 2023Observed: 1530.9 ft at 10:45PM Jan 27, 2023Observed: 1530.9 ft at 11:00PM Jan 27, 2023Observed: 1530.9 ft at 11:15PM Jan 27, 2023Observed: 1530.9 ft at 11:30PM Jan 27, 2023Observed: 1530.9 ft at 11:45PM Jan 27, 2023Observed: 1530.9 ft at 12:00AM Jan 28, 2023Observed: 1530.9 ft at 12:15AM Jan 28, 2023Observed: 1530.9 ft at 12:30AM Jan 28, 2023Observed: 1530.9 ft at 12:45AM Jan 28, 2023Observed: 1530.9 ft at 1:00AM Jan 28, 2023Observed: 1530.9 ft at 1:15AM Jan 28, 2023Observed: 1530.91 ft at 1:30AM Jan 28, 2023Observed: 1530.91 ft at 2:15AM Jan 28, 2023Observed: 1530.9 ft at 2:30AM Jan 28, 2023Observed: 1530.89 ft at 2:45AM Jan 28, 2023Observed: 1530.91 ft at 4:15AM Jan 28, 2023Observed: 1530.95 ft at 4:30AM Jan 28, 2023Observed: 1530.99 ft at 4:45AM Jan 28, 2023Observed: 1530.91 ft at 5:15AM Jan 28, 2023Observed: 1530.93 ft at 5:30AM Jan 28, 2023Observed: 1530.96 ft at 5:45AM Jan 28, 2023Observed: 1530.96 ft at 6:00AM Jan 28, 2023Observed: 1530.96 ft at 6:15AM Jan 28, 2023Observed: 1530.88 ft at 6:30AM Jan 28, 2023Observed: 1530.87 ft at 6:45AM Jan 28, 2023Observed: 1530.89 ft at 7:00AM Jan 28, 2023Observed: 1530.88 ft at 7:15AM Jan 28, 2023Observed: 1530.88 ft at 7:30AM Jan 28, 2023Observed: 1530.88 ft at 7:45AM Jan 28, 2023Observed: 1530.89 ft at 8:00AM Jan 28, 2023Observed: 1530.88 ft at 8:15AM Jan 28, 2023Observed: 1530.88 ft at 8:30AM Jan 28, 2023Observed: 1530.88 ft at 8:45AM Jan 28, 2023Observed: 1530.88 ft at 9:00AM Jan 28, 2023Observed: 1530.89 ft at 9:15AM Jan 28, 2023Observed: 1530.89 ft at 9:30AM Jan 28, 2023Observed: 1530.89 ft at 9:45AM Jan 28, 2023Observed: 1530.89 ft at 10:00AM Jan 28, 2023Observed: 1530.89 ft at 10:15AM Jan 28, 2023Observed: 1530.89 ft at 10:30AM Jan 28, 2023Observed: 1530.89 ft at 10:45AM Jan 28, 2023Observed: 1530.89 ft at 11:00AM Jan 28, 2023Observed: 1530.89 ft at 11:15AM Jan 28, 2023Observed: 1530.89 ft at 11:30AM Jan 28, 2023Observed: 1530.89 ft at 11:45AM Jan 28, 2023Observed: 1530.89 ft at 12:00PM Jan 28, 2023Observed: 1530.89 ft at 12:15PM Jan 28, 2023Observed: 1530.89 ft at 12:30PM Jan 28, 2023Observed: 1530.89 ft at 12:45PM Jan 28, 2023Observed: 1530.89 ft at 1:00PM Jan 28, 2023Observed: 1530.89 ft at 1:15PM Jan 28, 2023Observed: 1530.89 ft at 1:30PM Jan 28, 2023Observed: 1530.89 ft at 1:45PM Jan 28, 2023Observed: 1530.89 ft at 2:00PM Jan 28, 2023Observed: 1530.89 ft at 2:15PM Jan 28, 2023Observed: 1530.89 ft at 2:30PM Jan 28, 2023Observed: 1530.89 ft at 2:45PM Jan 28, 2023Observed: 1530.89 ft at 3:00PM Jan 28, 2023Observed: 1531.02 ft at 2:30PM Jan 29, 2023Observed: 1530.99 ft at 2:45PM Jan 29, 2023Observed: 1531 ft at 3:00PM Jan 29, 2023Observed: 1530.99 ft at 3:15PM Jan 29, 2023Observed: 1530.98 ft at 3:30PM Jan 29, 2023Observed: 1530.98 ft at 3:45PM Jan 29, 2023Observed: 1530.97 ft at 4:00PM Jan 29, 2023Observed: 1530.97 ft at 5:15PM Jan 29, 2023Observed: 1530.98 ft at 5:30PM Jan 29, 2023Observed: 1530.99 ft at 5:45PM Jan 29, 2023Observed: 1530.98 ft at 6:00PM Jan 29, 2023Observed: 1530.99 ft at 7:15PM Jan 29, 2023Observed: 1530.99 ft at 7:30PM Jan 29, 2023Observed: 1530.99 ft at 7:45PM Jan 29, 2023Observed: 1530.99 ft at 8:00PM Jan 29, 2023Observed: 1530.99 ft at 8:15PM Jan 29, 2023Observed: 1530.99 ft at 8:30PM Jan 29, 2023Observed: 1530.98 ft at 8:45PM Jan 29, 2023Observed: 1530.99 ft at 9:00PM Jan 29, 2023Observed: 1530.99 ft at 9:15PM Jan 29, 2023Observed: 1530.99 ft at 9:30PM Jan 29, 2023Observed: 1530.99 ft at 9:45PM Jan 29, 2023Observed: 1530.99 ft at 10:00PM Jan 29, 2023Observed: 1530.99 ft at 10:45PM Jan 29, 2023Observed: 1531 ft at 11:45PM Jan 29, 2023Observed: 1531.09 ft at 9:15AM Jan 30, 2023Observed: 1531.08 ft at 9:30AM Jan 30, 2023Observed: 1531.09 ft at 9:45AM Jan 30, 2023Observed: 1531.09 ft at 10:00AM Jan 30, 2023Observed: 1531.08 ft at 10:15AM Jan 30, 2023Observed: 1531.08 ft at 10:30AM Jan 30, 2023Observed: 1531.08 ft at 10:45AM Jan 30, 2023Observed: 1531.08 ft at 11:00AM Jan 30, 2023Observed: 1531.08 ft at 11:15AM Jan 30, 2023Observed: 1531.07 ft at 11:30AM Jan 30, 2023Observed: 1531.07 ft at 11:45AM Jan 30, 2023Observed: 1531.07 ft at 12:00PM Jan 30, 2023Observed: 1531.06 ft at 12:15PM Jan 30, 2023Observed: 1531.07 ft at 12:30PM Jan 30, 2023Observed: 1531.06 ft at 12:45PM Jan 30, 2023Observed: 1531.11 ft at 1:00PM Jan 30, 2023Observed: 1531.12 ft at 9:00PM Jan 30, 2023Observed: 1531.1 ft at 9:45PM Jan 30, 2023Observed: 1531.12 ft at 10:00PM Jan 30, 2023Observed: 1531.12 ft at 10:15PM Jan 30, 2023Highest Observation: 1531.14 ft at 11:00PM Jan 30, 2023Observed: 1531.12 ft at 11:15PM Jan 30, 2023Observed: 1531.11 ft at 11:30PM Jan 30, 2023Observed: 1531.12 ft at 11:45PM Jan 30, 2023Observed: 1531.12 ft at 12:00AM Jan 31, 2023Observed: 1531.08 ft at 9:15AM Jan 31, 2023Observed: 1531.08 ft at 9:30AM Jan 31, 2023Observed: 1531.07 ft at 9:45AM Jan 31, 2023Observed: 1531.07 ft at 10:00AM Jan 31, 2023Observed: 1531.08 ft at 10:15AM Jan 31, 2023Observed: 1531.07 ft at 10:30AM Jan 31, 2023Observed: 1531.07 ft at 10:45AM Jan 31, 2023Observed: 1531.06 ft at 11:00AM Jan 31, 2023Observed: 1531.13 ft at 1:45AM Feb 01, 2023Observed: 1531.12 ft at 2:00AM Feb 01, 2023Observed: 1531.12 ft at 2:15AM Feb 01, 2023Observed: 1531.12 ft at 2:45AM Feb 01, 2023Observed: 1531.12 ft at 3:00AM Feb 01, 2023Observed: 1531.11 ft at 3:15AM Feb 01, 2023Observed: 1531.12 ft at 3:30AM Feb 01, 2023Observed: 1531.12 ft at 3:45AM Feb 01, 2023Observed: 1531.11 ft at 4:00AM Feb 01, 2023Observed: 1531.11 ft at 5:45AM Feb 01, 2023Observed: 1531.12 ft at 9:15AM Feb 01, 2023Observed: 1531.12 ft at 9:30AM Feb 01, 2023Observed: 1531.1 ft at 6:45AM Feb 02, 2023Observed: 1531.03 ft at 7:00AM Feb 02, 2023Observed: 1530.96 ft at 7:15AM Feb 02, 2023Observed: 1530.93 ft at 7:30AM Feb 02, 2023Observed: 1530.92 ft at 7:45AM Feb 02, 2023Observed: 1530.92 ft at 8:00AM Feb 02, 2023Observed: 1530.81 ft at 9:15AM Feb 02, 2023Observed: 1530.81 ft at 9:30AM Feb 02, 2023Observed: 1530.82 ft at 9:45AM Feb 02, 2023Observed: 1530.82 ft at 10:00AM Feb 02, 2023Observed: 1530.83 ft at 10:15AM Feb 02, 2023Observed: 1530.81 ft at 10:30AM Feb 02, 2023Observed: 1530.8 ft at 10:45AM Feb 02, 2023Observed: 1530.81 ft at 11:00AM Feb 02, 2023Observed: 1530.89 ft at 11:30AM Feb 02, 2023Observed: 1530.93 ft at 11:45AM Feb 02, 2023Observed: 1530.98 ft at 12:00PM Feb 02, 2023South Dakota DANRBSFS2(plotting HGIRG) Graph Created (12:49PM Feb 2, 2023)ObservedLatest observed value: 1530.98 ft at 12:00 PM CST 2-Feb-2023. Flood Stage is 1540 ft
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About this graph
Tabular Data (UTC)
Tabular Data (CST)
XML Data
RSS Files
Datum: NAVD88
Metadata
NOTE: No forecasts are available for this location

NOTE: Gauge reading may be affected by ice.

NOTE: Forecasts are not available for the Big Sioux River above Flandreau. Only observed stages are available for this point.

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Upstream Gauge - near Brookings Upstream Gauge Downstream Gauge Downstream Gauge - near Egan
Flood Categories (in feet)
Major Flood Stage: 1545
Moderate Flood Stage: 1542
Flood Stage: 1540
Action Stage: 1537
Low Stage (in feet): 0

Historic Crests
(1) 1,545.29 ft on 09/13/2019
(2) 1,543.85 ft on 03/25/2011
(3) 1,543.53 ft on 03/23/2019 (P)
(4) 1,542.40 ft on 04/25/2018
(5) 1,538.33 ft on 04/01/2020

(P): Preliminary values subject to further review.

Recent Crests
(1) 1,538.33 ft on 04/01/2020
(2) 1,545.29 ft on 09/13/2019
(3) 1,543.53 ft on 03/23/2019 (P)
(4) 1,542.40 ft on 04/25/2018
(5) 1,543.85 ft on 03/25/2011

(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:16
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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
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1550 the Powwow grounds are completely under water, and flooding reaches onto the football field at the high school.
1545 Highway 13 north of the gauge begins to flood, and the roads leading into the Powwow Grounds are flooded. Also, the areas around 2nd Avenue and Water Street are flooded.
1542 N. Crescent Street north of the bridge floods, the golf course at the Flandreau Country Club begins to flood, and 230th Street floods near the park.
1541 479th Avenue between 224th and 225th Streets begins to flood.
1540 widespread agricultural flooding begins, Flandreau Park begins flooding, the parking lot at the weir dam is flooded, and the road behind the football field at the high school begins to flood.
1537 water starts to cross the road at the north end of the park in Flandreau.
About This Location Collapse

Latitude: 44.077688° N, Longitude: 96.586889° W, Horizontal Datum: NAD27

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 1540 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 0.00 1540.00 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  
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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
Sioux Falls Weather Forecast Office
26 Weather Lane
Sioux Falls, SD 57104-0198
(605) 330-4247
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Page last modified: 2-Nov-2020 7:29 PM
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