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Winnebago River (Northern IA) at Mason City Stage (ft)Flow (cfs)Observed: 5.03 ft at 12:15AM May 24, 2020Observed: 5.03 ft at 12:30AM May 24, 2020Observed: 5.05 ft at 12:45AM May 24, 2020Observed: 5.05 ft at 1:00AM May 24, 2020Observed: 5.05 ft at 1:15AM May 24, 2020Observed: 5.05 ft at 1:30AM May 24, 2020Observed: 5.06 ft at 1:45AM May 24, 2020Observed: 5.05 ft at 2:00AM May 24, 2020Observed: 5.06 ft at 2:15AM May 24, 2020Observed: 5.07 ft at 2:30AM May 24, 2020Observed: 5.06 ft at 2:45AM May 24, 2020Observed: 5.06 ft at 3:00AM May 24, 2020Observed: 5.05 ft at 3:15AM May 24, 2020Observed: 5.06 ft at 3:30AM May 24, 2020Observed: 5.08 ft at 3:45AM May 24, 2020Observed: 5.05 ft at 4:00AM May 24, 2020Observed: 5.08 ft at 4:15AM May 24, 2020Observed: 5.07 ft at 4:30AM May 24, 2020Observed: 5.08 ft at 4:45AM May 24, 2020Observed: 5.07 ft at 5:00AM May 24, 2020Observed: 5.06 ft at 5:15AM May 24, 2020Observed: 5.05 ft at 5:30AM May 24, 2020Observed: 5.08 ft at 5:45AM May 24, 2020Observed: 5.09 ft at 6:00AM May 24, 2020Observed: 5.07 ft at 6:15AM May 24, 2020Observed: 5.08 ft at 6:30AM May 24, 2020Observed: 5.09 ft at 6:45AM May 24, 2020Observed: 5.09 ft at 7:00AM May 24, 2020Observed: 5.08 ft at 7:15AM May 24, 2020Observed: 5.06 ft at 7:30AM May 24, 2020Observed: 5.07 ft at 7:45AM May 24, 2020Observed: 5.09 ft at 8:00AM May 24, 2020Observed: 5.08 ft at 8:15AM May 24, 2020Observed: 5.04 ft at 8:30AM May 24, 2020Observed: 5.07 ft at 8:45AM May 24, 2020Observed: 5.05 ft at 9:00AM May 24, 2020Observed: 5.09 ft at 9:15AM May 24, 2020Observed: 5.08 ft at 9:30AM May 24, 2020Observed: 5.09 ft at 9:45AM May 24, 2020Observed: 5.1 ft at 10:00AM May 24, 2020Observed: 5.11 ft at 10:15AM May 24, 2020Observed: 5.09 ft at 10:30AM May 24, 2020Observed: 5.1 ft at 10:45AM May 24, 2020Observed: 5.1 ft at 11:00AM May 24, 2020Observed: 5.1 ft at 11:15AM May 24, 2020Observed: 5.08 ft at 11:30AM May 24, 2020Observed: 5.11 ft at 11:45AM May 24, 2020Observed: 5.07 ft at 12:00PM May 24, 2020Observed: 5.08 ft at 12:15PM May 24, 2020Observed: 5.09 ft at 12:30PM May 24, 2020Observed: 5.1 ft at 12:45PM May 24, 2020Observed: 5.1 ft at 1:00PM May 24, 2020Observed: 5.07 ft at 1:15PM May 24, 2020Observed: 5.09 ft at 1:30PM May 24, 2020Observed: 5.08 ft at 1:45PM May 24, 2020Observed: 5.1 ft at 2:00PM May 24, 2020Observed: 5.1 ft at 2:15PM May 24, 2020Observed: 5.08 ft at 2:30PM May 24, 2020Observed: 5.07 ft at 2:45PM May 24, 2020Observed: 5.09 ft at 3:00PM May 24, 2020Observed: 5.08 ft at 3:15PM May 24, 2020Observed: 5.09 ft at 3:30PM May 24, 2020Observed: 5.07 ft at 3:45PM May 24, 2020Observed: 5.07 ft at 4:00PM May 24, 2020Observed: 5.09 ft at 4:15PM May 24, 2020Observed: 5.07 ft at 4:30PM May 24, 2020Observed: 5.07 ft at 4:45PM May 24, 2020Observed: 5.06 ft at 5:00PM May 24, 2020Observed: 5.08 ft at 5:15PM May 24, 2020Observed: 5.08 ft at 5:30PM May 24, 2020Observed: 5.08 ft at 5:45PM May 24, 2020Observed: 5.09 ft at 6:00PM May 24, 2020Observed: 5.07 ft at 6:15PM May 24, 2020Observed: 5.07 ft at 6:30PM May 24, 2020Observed: 5.06 ft at 6:45PM May 24, 2020Observed: 5.07 ft at 7:00PM May 24, 2020Observed: 5.06 ft at 7:15PM May 24, 2020Observed: 5.09 ft at 7:30PM May 24, 2020Observed: 5.1 ft at 7:45PM May 24, 2020Observed: 5.08 ft at 8:00PM May 24, 2020Observed: 5.09 ft at 8:15PM May 24, 2020Observed: 5.06 ft at 8:30PM May 24, 2020Observed: 5.06 ft at 8:45PM May 24, 2020Observed: 5.06 ft at 9:00PM May 24, 2020Observed: 5.08 ft at 9:15PM May 24, 2020Observed: 5.08 ft at 9:30PM May 24, 2020Observed: 5.08 ft at 9:45PM May 24, 2020Observed: 5.08 ft at 10:00PM May 24, 2020Observed: 5.08 ft at 10:15PM May 24, 2020Observed: 5.09 ft at 10:30PM May 24, 2020Observed: 5.08 ft at 10:45PM May 24, 2020Observed: 5.11 ft at 11:00PM May 24, 2020Observed: 5.08 ft at 11:15PM May 24, 2020Observed: 5.09 ft at 11:30PM May 24, 2020Observed: 5.08 ft at 11:45PM May 24, 2020Observed: 5.09 ft at 12:00AM May 25, 2020Observed: 5.08 ft at 12:15AM May 25, 2020Observed: 5.1 ft at 12:30AM May 25, 2020Observed: 5.1 ft at 12:45AM May 25, 2020Observed: 5.07 ft at 1:00AM May 25, 2020Observed: 5.11 ft at 1:15AM May 25, 2020Observed: 5.09 ft at 1:30AM May 25, 2020Observed: 5.11 ft at 1:45AM May 25, 2020Observed: 5.11 ft at 2:00AM May 25, 2020Observed: 5.11 ft at 2:15AM May 25, 2020Observed: 5.09 ft at 2:30AM May 25, 2020Observed: 5.1 ft at 2:45AM May 25, 2020Observed: 5.09 ft at 3:00AM May 25, 2020Observed: 5.1 ft at 3:15AM May 25, 2020Observed: 5.09 ft at 3:30AM May 25, 2020Observed: 5.1 ft at 3:45AM May 25, 2020Observed: 5.1 ft at 4:00AM May 25, 2020Observed: 5.09 ft at 4:15AM May 25, 2020Observed: 5.09 ft at 4:30AM May 25, 2020Observed: 5.09 ft at 4:45AM May 25, 2020Observed: 5.1 ft at 5:00AM May 25, 2020Observed: 5.12 ft at 5:15AM May 25, 2020Observed: 5.11 ft at 5:30AM May 25, 2020Observed: 5.11 ft at 5:45AM May 25, 2020Observed: 5.12 ft at 6:00AM May 25, 2020Observed: 5.12 ft at 6:15AM May 25, 2020Observed: 5.11 ft at 6:30AM May 25, 2020Observed: 5.12 ft at 6:45AM May 25, 2020Observed: 5.12 ft at 7:00AM May 25, 2020Observed: 5.1 ft at 7:15AM May 25, 2020Observed: 5.14 ft at 7:30AM May 25, 2020Observed: 5.12 ft at 7:45AM May 25, 2020Observed: 5.13 ft at 8:00AM May 25, 2020Observed: 5.12 ft at 8:15AM May 25, 2020Observed: 5.12 ft at 8:30AM May 25, 2020Observed: 5.12 ft at 8:45AM May 25, 2020Observed: 5.12 ft at 9:00AM May 25, 2020Observed: 5.13 ft at 9:15AM May 25, 2020Observed: 5.12 ft at 9:30AM May 25, 2020Observed: 5.11 ft at 9:45AM May 25, 2020Observed: 5.14 ft at 10:00AM May 25, 2020Observed: 5.14 ft at 10:15AM May 25, 2020Observed: 5.11 ft at 10:30AM May 25, 2020Observed: 5.13 ft at 10:45AM May 25, 2020Observed: 5.12 ft at 11:00AM May 25, 2020Observed: 5.13 ft at 11:15AM May 25, 2020Observed: 5.13 ft at 11:30AM May 25, 2020Observed: 5.13 ft at 11:45AM May 25, 2020Observed: 5.13 ft at 12:00PM May 25, 2020Observed: 5.15 ft at 12:15PM May 25, 2020Observed: 5.14 ft at 12:30PM May 25, 2020Observed: 5.13 ft at 12:45PM May 25, 2020Observed: 5.14 ft at 1:00PM May 25, 2020Observed: 5.14 ft at 1:15PM May 25, 2020Observed: 5.12 ft at 1:30PM May 25, 2020Observed: 5.16 ft at 1:45PM May 25, 2020Observed: 5.14 ft at 2:00PM May 25, 2020Observed: 5.13 ft at 2:15PM May 25, 2020Observed: 5.14 ft at 2:30PM May 25, 2020Observed: 5.11 ft at 2:45PM May 25, 2020Observed: 5.14 ft at 3:00PM May 25, 2020Observed: 5.13 ft at 3:15PM May 25, 2020Observed: 5.15 ft at 3:30PM May 25, 2020Observed: 5.15 ft at 3:45PM May 25, 2020Observed: 5.13 ft at 4:00PM May 25, 2020Observed: 5.12 ft at 4:15PM May 25, 2020Observed: 5.14 ft at 4:30PM May 25, 2020Observed: 5.13 ft at 4:45PM May 25, 2020Observed: 5.15 ft at 5:00PM May 25, 2020Observed: 5.13 ft at 5:15PM May 25, 2020Observed: 5.12 ft at 5:30PM May 25, 2020Observed: 5.15 ft at 5:45PM May 25, 2020Observed: 5.13 ft at 6:00PM May 25, 2020Observed: 5.12 ft at 6:15PM May 25, 2020Observed: 5.13 ft at 6:30PM May 25, 2020Observed: 5.11 ft at 6:45PM May 25, 2020Observed: 5.13 ft at 7:00PM May 25, 2020Observed: 5.15 ft at 7:15PM May 25, 2020Observed: 5.15 ft at 7:30PM May 25, 2020Observed: 5.15 ft at 7:45PM May 25, 2020Observed: 5.16 ft at 8:00PM May 25, 2020Observed: 5.19 ft at 8:15PM May 25, 2020Observed: 5.22 ft at 8:30PM May 25, 2020Observed: 5.23 ft at 8:45PM May 25, 2020Observed: 5.22 ft at 9:00PM May 25, 2020Observed: 5.22 ft at 9:15PM May 25, 2020Observed: 5.25 ft at 9:30PM May 25, 2020Observed: 5.25 ft at 9:45PM May 25, 2020Observed: 5.23 ft at 10:00PM May 25, 2020Observed: 5.26 ft at 10:15PM May 25, 2020Observed: 5.24 ft at 10:30PM May 25, 2020Observed: 5.26 ft at 10:45PM May 25, 2020Observed: 5.26 ft at 11:00PM May 25, 2020Observed: 5.25 ft at 11:15PM May 25, 2020Observed: 5.26 ft at 11:30PM May 25, 2020Observed: 5.26 ft at 11:45PM May 25, 2020Observed: 5.27 ft at 12:00AM May 26, 2020Observed: 5.29 ft at 12:15AM May 26, 2020Observed: 5.26 ft at 12:30AM May 26, 2020Observed: 5.27 ft at 12:45AM May 26, 2020Observed: 5.29 ft at 1:00AM May 26, 2020Observed: 5.26 ft at 1:15AM May 26, 2020Observed: 5.28 ft at 1:30AM May 26, 2020Observed: 5.27 ft at 1:45AM May 26, 2020Observed: 5.3 ft at 2:00AM May 26, 2020Observed: 5.29 ft at 2:15AM May 26, 2020Observed: 5.31 ft at 2:30AM May 26, 2020Observed: 5.27 ft at 2:45AM May 26, 2020Observed: 5.28 ft at 3:00AM May 26, 2020Observed: 5.29 ft at 3:15AM May 26, 2020Observed: 5.3 ft at 3:30AM May 26, 2020Observed: 5.29 ft at 3:45AM May 26, 2020Observed: 5.26 ft at 4:00AM May 26, 2020Observed: 5.32 ft at 4:15AM May 26, 2020Observed: 5.28 ft at 4:30AM May 26, 2020Observed: 5.29 ft at 4:45AM May 26, 2020Observed: 5.3 ft at 5:00AM May 26, 2020Observed: 5.3 ft at 5:15AM May 26, 2020Observed: 5.32 ft at 5:30AM May 26, 2020Observed: 5.31 ft at 5:45AM May 26, 2020Observed: 5.3 ft at 6:00AM May 26, 2020Observed: 5.29 ft at 6:15AM May 26, 2020Observed: 5.31 ft at 6:30AM May 26, 2020Observed: 5.29 ft at 6:45AM May 26, 2020Observed: 5.32 ft at 7:00AM May 26, 2020Observed: 5.32 ft at 7:15AM May 26, 2020Observed: 5.32 ft at 7:30AM May 26, 2020Observed: 5.27 ft at 7:45AM May 26, 2020Observed: 5.32 ft at 8:00AM May 26, 2020Observed: 5.33 ft at 8:15AM May 26, 2020Observed: 5.32 ft at 8:30AM May 26, 2020Observed: 5.32 ft at 8:45AM May 26, 2020Observed: 5.31 ft at 9:00AM May 26, 2020Observed: 5.29 ft at 9:15AM May 26, 2020Observed: 5.35 ft at 9:30AM May 26, 2020Observed: 5.34 ft at 9:45AM May 26, 2020Observed: 5.31 ft at 10:00AM May 26, 2020Observed: 5.34 ft at 10:15AM May 26, 2020Observed: 5.33 ft at 10:30AM May 26, 2020Observed: 5.32 ft at 10:45AM May 26, 2020Observed: 5.3 ft at 11:00AM May 26, 2020Observed: 5.33 ft at 11:15AM May 26, 2020Observed: 5.34 ft at 11:30AM May 26, 2020Observed: 5.32 ft at 11:45AM May 26, 2020Observed: 5.36 ft at 12:00PM May 26, 2020Observed: 5.33 ft at 12:15PM May 26, 2020Observed: 5.36 ft at 12:30PM May 26, 2020Observed: 5.37 ft at 12:45PM May 26, 2020Observed: 5.34 ft at 1:00PM May 26, 2020Observed: 5.36 ft at 1:15PM May 26, 2020Observed: 5.37 ft at 1:30PM May 26, 2020Observed: 5.36 ft at 1:45PM May 26, 2020Observed: 5.36 ft at 2:00PM May 26, 2020Observed: 5.36 ft at 2:15PM May 26, 2020Observed: 5.35 ft at 2:30PM May 26, 2020Observed: 5.32 ft at 2:45PM May 26, 2020Observed: 5.31 ft at 3:00PM May 26, 2020Observed: 5.33 ft at 3:15PM May 26, 2020Observed: 5.31 ft at 3:30PM May 26, 2020Observed: 5.32 ft at 3:45PM May 26, 2020Observed: 5.32 ft at 4:00PM May 26, 2020Observed: 5.33 ft at 4:15PM May 26, 2020Observed: 5.32 ft at 4:30PM May 26, 2020Observed: 5.32 ft at 4:45PM May 26, 2020Observed: 5.32 ft at 5:00PM May 26, 2020Observed: 5.33 ft at 5:15PM May 26, 2020Observed: 5.32 ft at 5:30PM May 26, 2020Observed: 5.3 ft at 5:45PM May 26, 2020Observed: 5.31 ft at 6:00PM May 26, 2020Observed: 5.31 ft at 6:15PM May 26, 2020Observed: 5.32 ft at 6:30PM May 26, 2020Observed: 5.44 ft at 6:45PM May 26, 2020Observed: 5.53 ft at 7:00PM May 26, 2020Observed: 5.61 ft at 7:15PM May 26, 2020Observed: 5.66 ft at 7:30PM May 26, 2020Observed: 5.78 ft at 7:45PM May 26, 2020Observed: 5.9 ft at 8:00PM May 26, 2020Observed: 6.07 ft at 8:15PM May 26, 2020Observed: 6.16 ft at 8:30PM May 26, 2020Observed: 6.28 ft at 8:45PM May 26, 2020Observed: 6.33 ft at 9:00PM May 26, 2020Observed: 6.39 ft at 9:15PM May 26, 2020Observed: 6.45 ft at 9:30PM May 26, 2020Observed: 6.49 ft at 9:45PM May 26, 2020Observed: 6.53 ft at 10:00PM May 26, 2020Observed: 6.57 ft at 10:15PM May 26, 2020Observed: 6.61 ft at 10:30PM May 26, 2020Observed: 6.65 ft at 10:45PM May 26, 2020Observed: 6.68 ft at 11:00PM May 26, 2020Observed: 6.73 ft at 11:15PM May 26, 2020Observed: 6.73 ft at 11:30PM May 26, 2020Observed: 6.77 ft at 11:45PM May 26, 2020Observed: 6.8 ft at 12:00AM May 27, 2020Observed: 6.8 ft at 12:15AM May 27, 2020Observed: 6.81 ft at 12:30AM May 27, 2020Observed: 6.84 ft at 12:45AM May 27, 2020Observed: 6.83 ft at 1:00AM May 27, 2020Observed: 6.83 ft at 1:15AM May 27, 2020Observed: 6.84 ft at 1:30AM May 27, 2020Observed: 6.83 ft at 1:45AM May 27, 2020Observed: 6.85 ft at 2:00AM May 27, 2020Observed: 6.84 ft at 2:15AM May 27, 2020Observed: 6.83 ft at 2:30AM May 27, 2020Observed: 6.87 ft at 2:45AM May 27, 2020Observed: 6.85 ft at 3:00AM May 27, 2020Observed: 6.85 ft at 3:15AM May 27, 2020Observed: 6.84 ft at 3:30AM May 27, 2020Observed: 6.85 ft at 3:45AM May 27, 2020Observed: 6.81 ft at 4:00AM May 27, 2020Observed: 6.83 ft at 4:15AM May 27, 2020Observed: 6.83 ft at 4:30AM May 27, 2020Observed: 6.84 ft at 4:45AM May 27, 2020Observed: 6.84 ft at 5:00AM May 27, 2020Observed: 6.84 ft at 5:15AM May 27, 2020Observed: 6.81 ft at 5:30AM May 27, 2020Observed: 6.84 ft at 5:45AM May 27, 2020Observed: 6.84 ft at 6:00AM May 27, 2020Observed: 6.84 ft at 6:15AM May 27, 2020Observed: 6.87 ft at 6:30AM May 27, 2020Observed: 6.86 ft at 6:45AM May 27, 2020Observed: 6.87 ft at 7:00AM May 27, 2020Observed: 6.86 ft at 7:15AM May 27, 2020Observed: 6.87 ft at 7:30AM May 27, 2020Observed: 6.87 ft at 7:45AM May 27, 2020Highest Observation: 6.88 ft at 8:00AM May 27, 2020Observed: 6.87 ft at 8:15AM May 27, 2020Observed: 6.87 ft at 8:30AM May 27, 2020Observed: 6.87 ft at 8:45AM May 27, 2020Observed: 6.87 ft at 9:00AM May 27, 2020Observed: 6.87 ft at 9:15AM May 27, 2020Observed: 6.86 ft at 9:30AM May 27, 2020Observed: 6.84 ft at 9:45AM May 27, 2020Observed: 6.86 ft at 10:00AM May 27, 2020Highest Observation: 6.88 ft at 10:15AM May 27, 2020Observed: 6.85 ft at 10:30AM May 27, 2020Observed: 6.85 ft at 10:45AM May 27, 2020Observed: 6.84 ft at 11:00AM May 27, 2020Observed: 6.84 ft at 11:15AM May 27, 2020Observed: 6.82 ft at 11:30AM May 27, 2020Observed: 6.82 ft at 11:45AM May 27, 2020Observed: 6.82 ft at 12:00PM May 27, 2020Observed: 6.83 ft at 12:15PM May 27, 2020Observed: 6.83 ft at 12:30PM May 27, 2020Observed: 6.79 ft at 12:45PM May 27, 2020Observed: 6.81 ft at 1:00PM May 27, 2020Observed: 6.79 ft at 1:15PM May 27, 2020Observed: 6.77 ft at 1:30PM May 27, 2020Observed: 6.75 ft at 1:45PM May 27, 2020Observed: 6.76 ft at 2:00PM May 27, 2020Observed: 6.74 ft at 2:15PM May 27, 2020Observed: 6.73 ft at 2:30PM May 27, 2020Observed: 6.75 ft at 2:45PM May 27, 2020Observed: 6.72 ft at 3:00PM May 27, 2020Observed: 6.7 ft at 3:15PM May 27, 2020Observed: 6.7 ft at 3:30PM May 27, 2020Observed: 6.69 ft at 3:45PM May 27, 2020Observed: 6.65 ft at 4:00PM May 27, 2020Observed: 6.65 ft at 4:15PM May 27, 2020Observed: 6.66 ft at 4:30PM May 27, 2020Observed: 6.64 ft at 4:45PM May 27, 2020Observed: 6.64 ft at 5:00PM May 27, 2020Observed: 6.61 ft at 5:15PM May 27, 2020Observed: 6.6 ft at 5:30PM May 27, 2020Observed: 6.6 ft at 5:45PM May 27, 2020Observed: 6.58 ft at 6:00PM May 27, 2020Observed: 6.57 ft at 6:15PM May 27, 2020Observed: 6.54 ft at 6:30PM May 27, 2020Observed: 6.56 ft at 6:45PM May 27, 2020Observed: 6.52 ft at 7:00PM May 27, 2020Observed: 6.52 ft at 7:15PM May 27, 2020Observed: 6.52 ft at 7:30PM May 27, 2020Observed: 6.51 ft at 7:45PM May 27, 2020Observed: 6.49 ft at 8:00PM May 27, 2020Observed: 6.49 ft at 8:15PM May 27, 2020Observed: 6.48 ft at 8:30PM May 27, 2020Observed: 6.46 ft at 8:45PM May 27, 2020Observed: 6.45 ft at 9:00PM May 27, 2020Observed: 6.44 ft at 9:15PM May 27, 2020Observed: 6.44 ft at 9:30PM May 27, 2020Observed: 6.42 ft at 9:45PM May 27, 2020Observed: 6.4 ft at 10:00PM May 27, 2020Observed: 6.38 ft at 10:15PM May 27, 2020Observed: 6.39 ft at 10:30PM May 27, 2020Observed: 6.38 ft at 10:45PM May 27, 2020Observed: 6.37 ft at 11:00PM May 27, 2020Observed: 6.37 ft at 11:15PM May 27, 2020Observed: 6.34 ft at 11:30PM May 27, 2020Observed: 6.34 ft at 11:45PM May 27, 2020Observed: 6.33 ft at 12:00AM May 28, 2020Observed: 6.31 ft at 12:15AM May 28, 2020Observed: 6.31 ft at 12:30AM May 28, 2020Observed: 6.29 ft at 12:45AM May 28, 2020Observed: 6.29 ft at 1:00AM May 28, 2020Observed: 6.29 ft at 1:15AM May 28, 2020Observed: 6.29 ft at 1:30AM May 28, 2020Observed: 6.28 ft at 1:45AM May 28, 2020Observed: 6.26 ft at 2:00AM May 28, 2020Observed: 6.27 ft at 2:15AM May 28, 2020Observed: 6.25 ft at 2:30AM May 28, 2020Observed: 6.25 ft at 2:45AM May 28, 2020Observed: 6.23 ft at 3:00AM May 28, 2020Observed: 6.25 ft at 3:15AM May 28, 2020Observed: 6.22 ft at 3:30AM May 28, 2020Observed: 6.22 ft at 3:45AM May 28, 2020Observed: 6.2 ft at 4:00AM May 28, 2020Observed: 6.21 ft at 4:15AM May 28, 2020Observed: 6.19 ft at 4:30AM May 28, 2020Observed: 6.18 ft at 4:45AM May 28, 2020Observed: 6.16 ft at 5:00AM May 28, 2020Observed: 6.17 ft at 5:15AM May 28, 2020Observed: 6.15 ft at 5:30AM May 28, 2020Observed: 6.15 ft at 5:45AM May 28, 2020Observed: 6.15 ft at 6:00AM May 28, 2020Observed: 6.16 ft at 6:15AM May 28, 2020Observed: 6.15 ft at 6:30AM May 28, 2020Observed: 6.11 ft at 6:45AM May 28, 2020Observed: 6.13 ft at 7:00AM May 28, 2020Observed: 6.12 ft at 7:15AM May 28, 2020Observed: 6.11 ft at 7:30AM May 28, 2020Observed: 6.13 ft at 7:45AM May 28, 2020Observed: 6.1 ft at 8:00AM May 28, 2020Observed: 6.1 ft at 8:15AM May 28, 2020Observed: 6.09 ft at 8:30AM May 28, 2020Observed: 6.07 ft at 8:45AM May 28, 2020Observed: 6.07 ft at 9:00AM May 28, 2020Observed: 6.05 ft at 9:15AM May 28, 2020Observed: 6.06 ft at 9:30AM May 28, 2020Observed: 6.02 ft at 9:45AM May 28, 2020Observed: 6.05 ft at 10:00AM May 28, 2020Observed: 6.03 ft at 10:15AM May 28, 2020Observed: 6.06 ft at 10:30AM May 28, 2020Observed: 6.02 ft at 10:45AM May 28, 2020Observed: 6.02 ft at 11:00AM May 28, 2020Observed: 6.02 ft at 11:15AM May 28, 2020Observed: 6.02 ft at 11:30AM May 28, 2020Observed: 6.02 ft at 11:45AM May 28, 2020Observed: 6.01 ft at 12:00PM May 28, 2020Observed: 6 ft at 12:15PM May 28, 2020Observed: 6 ft at 12:30PM May 28, 2020Observed: 6 ft at 12:45PM May 28, 2020Observed: 5.99 ft at 1:00PM May 28, 2020Observed: 5.97 ft at 1:15PM May 28, 2020Observed: 5.96 ft at 1:30PM May 28, 2020Observed: 5.97 ft at 1:45PM May 28, 2020Observed: 5.94 ft at 2:00PM May 28, 2020Observed: 5.95 ft at 2:15PM May 28, 2020Observed: 5.94 ft at 2:30PM May 28, 2020Observed: 5.95 ft at 2:45PM May 28, 2020Observed: 5.92 ft at 3:00PM May 28, 2020Observed: 5.94 ft at 3:15PM May 28, 2020Observed: 5.94 ft at 3:30PM May 28, 2020Observed: 5.91 ft at 3:45PM May 28, 2020Observed: 5.91 ft at 4:00PM May 28, 2020Observed: 5.9 ft at 4:15PM May 28, 2020Observed: 5.91 ft at 4:30PM May 28, 2020Observed: 5.9 ft at 4:45PM May 28, 2020Observed: 5.88 ft at 5:00PM May 28, 2020Observed: 5.88 ft at 5:15PM May 28, 2020Observed: 5.91 ft at 5:30PM May 28, 2020Observed: 5.9 ft at 5:45PM May 28, 2020Observed: 5.89 ft at 6:00PM May 28, 2020Observed: 5.85 ft at 6:15PM May 28, 2020Observed: 5.86 ft at 6:30PM May 28, 2020Observed: 5.87 ft at 6:45PM May 28, 2020Observed: 5.85 ft at 7:00PM May 28, 2020Observed: 5.87 ft at 7:15PM May 28, 2020Observed: 5.84 ft at 7:30PM May 28, 2020Observed: 5.86 ft at 7:45PM May 28, 2020Observed: 5.83 ft at 8:00PM May 28, 2020Observed: 5.84 ft at 8:15PM May 28, 2020Observed: 5.83 ft at 8:30PM May 28, 2020Observed: 5.83 ft at 8:45PM May 28, 2020Observed: 5.82 ft at 9:00PM May 28, 2020Observed: 5.81 ft at 9:15PM May 28, 2020Observed: 5.81 ft at 9:30PM May 28, 2020Observed: 5.81 ft at 9:45PM May 28, 2020Observed: 5.79 ft at 10:00PM May 28, 2020Observed: 5.8 ft at 10:15PM May 28, 2020Observed: 5.8 ft at 10:30PM May 28, 2020Observed: 5.79 ft at 10:45PM May 28, 2020Observed: 5.78 ft at 11:00PM May 28, 2020Observed: 5.79 ft at 11:15PM May 28, 2020Observed: 5.77 ft at 11:30PM May 28, 2020Highest Forecast: 5.8 ft 1:00AM May 29, 2020Forecast: 5.7 ft 7:00AM May 29, 2020Forecast: 5.6 ft 1:00PM May 29, 2020Forecast: 5.5 ft 7:00PM May 29, 2020Forecast: 5.5 ft 1:00AM May 30, 2020Forecast: 5.4 ft 7:00AM May 30, 2020Forecast: 5.3 ft 1:00PM May 30, 2020Forecast: 5.3 ft 7:00PM May 30, 2020Forecast: 5.2 ft 1:00AM May 31, 2020Forecast: 5.2 ft 7:00AM May 31, 2020Forecast: 5.1 ft 1:00PM May 31, 2020Forecast: 5.1 ft 7:00PM May 31, 2020Forecast: 5.1 ft 1:00AM Jun 01, 2020Forecast: 5 ft 7:00AM Jun 01, 2020Forecast: 5 ft 1:00PM Jun 01, 2020Forecast: 5 ft 7:00PM Jun 01, 2020Forecast: 4.9 ft 1:00AM Jun 02, 2020Forecast: 4.9 ft 7:00AM Jun 02, 2020Forecast: 4.9 ft 1:00PM Jun 02, 2020Forecast: 4.8 ft 7:00PM Jun 02, 2020Forecast: 4.8 ft 1:00AM Jun 03, 2020Forecast: 4.8 ft 7:00AM Jun 03, 2020Forecast: 4.7 ft 1:00PM Jun 03, 2020Forecast: 4.7 ft 7:00PM Jun 03, 2020Forecast: 4.7 ft 1:00AM Jun 04, 2020Forecast: 4.6 ft 7:00AM Jun 04, 2020Forecast: 4.6 ft 1:00PM Jun 04, 2020Forecast: 4.6 ft 7:00PM Jun 04, 2020USGS--Water Resources of the United StatesMCWI4(plotting HGIRG) Graph Created (12:02AM May 29, 2020)ObservedForecast (issued 8:33PM May 28)Latest observed value: 5.77 ft at 11:30 PM CDT 28-May-2020. Flood Stage is 10 ft
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Tabular Data (CDT)
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Metadata
NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time.

NOTE: Forecasts for the Winnebago River (Northern IA) at Mason City are issued as needed during times of high water, but are not routinely available.

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Upstream Gauge - near Mason City US 65 Upstream Gauge Downstream Gauge Downstream Gauge - near Rockford
Flood Categories (in feet)
Major Flood Stage: 15.5
Moderate Flood Stage: 14.5
Flood Stage: 10
Action Stage: 6
Low Stage (in feet): -9999

Historic Crests
(1) 18.74 ft on 06/08/2008
(2) 14.80 ft on 03/27/1961
(3) 14.67 ft on 05/22/2004
(4) 14.27 ft on 04/11/1965
(5) 14.07 ft on 09/22/2016
(6) 13.70 ft on 04/06/1965
(7) 13.06 ft on 08/31/1962
(8) 12.59 ft on 04/01/1993
(9) 12.44 ft on 04/07/1951
(10) 12.30 ft on 05/23/2004
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 7.14 ft on 02/21/2017
(2) 14.07 ft on 09/22/2016
(3) 8.82 ft on 09/16/2016
(4) 7.82 ft on 09/10/2016
(5) 9.65 ft on 09/07/2016
(6) 9.29 ft on 08/24/2016
(7) 8.64 ft on 07/17/2016
(8) 7.25 ft on 06/15/2016
(9) 7.85 ft on 06/11/2016
(10) 6.66 ft on 02/23/2016
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 2.68 ft on 10/01/1988

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.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
20.5 Water overtops the floodwall at the water treatment plant...located at 13th St NE.
17.4 Water reaches bottom of railroad bridge east of Kentucky Avenue bridge.
15 This is the approximate top of levee protection. Levees run from the 12th Street Northeast bridge to 9th Street along the east bank and also from 8th Street to 6th and Hampshire Streets.
14 Water may flow over the city dikes.
12 Widespread flooding occurs along the river. Some backwater effects are possible along Willow Creek between downtown Mason City and the confluence with the Winnebago river.
11 Sandbagging occurs on the dike from 12th Street Northeast to Carolina Street.
10 There is widespread flooding of city parks and water reaches the underside of the 12th Street Northeast bridge at the piers.
8 East and west city parks are affected in the 12th Street Northeast area.
7 Low lying areas along the river are affected.
About This Location Collapse

Latitude: 43.164962° N, Longitude: 93.192703° 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 1069.59 ft 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:
Additional Information Collapse
  • USGS 7-Day Streamflow Duration Hydrograph for this location:
    Duration Hydrograph

    Duration Hydrograph Legend


  • USGS Cumulative Streamflow Hydrograph for this location:
    Duration Hydrograph of Cumulative Streamflow
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Hydrologic Resources Additional Resources
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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
Des Moines Weather Forecast Office
9607 NW Beaver Dr.
Des Moines, IA 50131
(515) 270-2614
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