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Winnebago River (Northern IA) At Mason City (MCWI4)

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NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time.
Flood Stage: 10 Feet
Latest Stage: 3.72
Current Warnings/Statements/Advisories:None currently.
at Mason City
Stage (ft)Flow (cfs)Observed: 4.74 ft at 3:00AM Aug 30, 2015Observed: 4.75 ft at 3:15AM Aug 30, 2015Highest Observation: 4.76 ft at 3:30AM Aug 30, 2015Observed: 4.72 ft at 3:45AM Aug 30, 2015Observed: 4.75 ft at 4:00AM Aug 30, 2015Observed: 4.74 ft at 4:15AM Aug 30, 2015Observed: 4.74 ft at 4:30AM Aug 30, 2015Observed: 4.74 ft at 4:45AM Aug 30, 2015Observed: 4.74 ft at 5:00AM Aug 30, 2015Observed: 4.74 ft at 5:15AM Aug 30, 2015Observed: 4.72 ft at 5:30AM Aug 30, 2015Observed: 4.72 ft at 5:45AM Aug 30, 2015Observed: 4.72 ft at 6:00AM Aug 30, 2015Observed: 4.73 ft at 6:15AM Aug 30, 2015Observed: 4.72 ft at 6:30AM Aug 30, 2015Observed: 4.71 ft at 6:45AM Aug 30, 2015Observed: 4.72 ft at 7:00AM Aug 30, 2015Observed: 4.71 ft at 7:15AM Aug 30, 2015Observed: 4.71 ft at 7:30AM Aug 30, 2015Observed: 4.7 ft at 7:45AM Aug 30, 2015Observed: 4.69 ft at 8:00AM Aug 30, 2015Observed: 4.69 ft at 8:15AM Aug 30, 2015Observed: 4.68 ft at 8:30AM Aug 30, 2015Observed: 4.68 ft at 8:45AM Aug 30, 2015Observed: 4.67 ft at 9:00AM Aug 30, 2015Observed: 4.68 ft at 9:15AM Aug 30, 2015Observed: 4.67 ft at 9:30AM Aug 30, 2015Observed: 4.66 ft at 9:45AM Aug 30, 2015Observed: 4.67 ft at 10:00AM Aug 30, 2015Observed: 4.66 ft at 10:15AM Aug 30, 2015Observed: 4.66 ft at 10:30AM Aug 30, 2015Observed: 4.66 ft at 10:45AM Aug 30, 2015Observed: 4.65 ft at 11:00AM Aug 30, 2015Observed: 4.65 ft at 11:15AM Aug 30, 2015Observed: 4.64 ft at 11:30AM Aug 30, 2015Observed: 4.64 ft at 11:45AM Aug 30, 2015Observed: 4.64 ft at 12:00PM Aug 30, 2015Observed: 4.64 ft at 12:15PM Aug 30, 2015Observed: 4.63 ft at 12:30PM Aug 30, 2015Observed: 4.63 ft at 12:45PM Aug 30, 2015Observed: 4.62 ft at 1:00PM Aug 30, 2015Observed: 4.61 ft at 1:15PM Aug 30, 2015Observed: 4.62 ft at 1:30PM Aug 30, 2015Observed: 4.6 ft at 1:45PM Aug 30, 2015Observed: 4.61 ft at 2:00PM Aug 30, 2015Observed: 4.6 ft at 2:15PM Aug 30, 2015Observed: 4.59 ft at 2:30PM Aug 30, 2015Observed: 4.6 ft at 2:45PM Aug 30, 2015Observed: 4.57 ft at 3:00PM Aug 30, 2015Observed: 4.59 ft at 3:15PM Aug 30, 2015Observed: 4.57 ft at 3:30PM Aug 30, 2015Observed: 4.57 ft at 3:45PM Aug 30, 2015Observed: 4.56 ft at 4:00PM Aug 30, 2015Observed: 4.57 ft at 4:15PM Aug 30, 2015Observed: 4.55 ft at 4:30PM Aug 30, 2015Observed: 4.56 ft at 4:45PM Aug 30, 2015Observed: 4.55 ft at 5:00PM Aug 30, 2015Observed: 4.55 ft at 5:15PM Aug 30, 2015Observed: 4.56 ft at 5:30PM Aug 30, 2015Observed: 4.54 ft at 5:45PM Aug 30, 2015Observed: 4.54 ft at 6:00PM Aug 30, 2015Observed: 4.53 ft at 6:15PM Aug 30, 2015Observed: 4.51 ft at 6:30PM Aug 30, 2015Observed: 4.53 ft at 6:45PM Aug 30, 2015Observed: 4.53 ft at 7:00PM Aug 30, 2015Observed: 4.52 ft at 7:15PM Aug 30, 2015Observed: 4.51 ft at 7:30PM Aug 30, 2015Observed: 4.51 ft at 7:45PM Aug 30, 2015Observed: 4.51 ft at 8:00PM Aug 30, 2015Observed: 4.5 ft at 8:15PM Aug 30, 2015Observed: 4.51 ft at 8:30PM Aug 30, 2015Observed: 4.5 ft at 8:45PM Aug 30, 2015Observed: 4.49 ft at 9:00PM Aug 30, 2015Observed: 4.47 ft at 9:15PM Aug 30, 2015Observed: 4.48 ft at 9:30PM Aug 30, 2015Observed: 4.48 ft at 9:45PM Aug 30, 2015Observed: 4.47 ft at 10:00PM Aug 30, 2015Observed: 4.47 ft at 10:15PM Aug 30, 2015Observed: 4.47 ft at 10:30PM Aug 30, 2015Observed: 4.46 ft at 10:45PM Aug 30, 2015Observed: 4.46 ft at 11:00PM Aug 30, 2015Observed: 4.45 ft at 11:15PM Aug 30, 2015Observed: 4.45 ft at 11:30PM Aug 30, 2015Observed: 4.45 ft at 11:45PM Aug 30, 2015Observed: 4.45 ft at 12:00AM Aug 31, 2015Observed: 4.44 ft at 12:15AM Aug 31, 2015Observed: 4.44 ft at 12:30AM Aug 31, 2015Observed: 4.42 ft at 12:45AM Aug 31, 2015Observed: 4.43 ft at 1:00AM Aug 31, 2015Observed: 4.43 ft at 1:15AM Aug 31, 2015Observed: 4.42 ft at 1:30AM Aug 31, 2015Observed: 4.41 ft at 1:45AM Aug 31, 2015Observed: 4.41 ft at 2:00AM Aug 31, 2015Observed: 4.4 ft at 2:15AM Aug 31, 2015Observed: 4.4 ft at 2:30AM Aug 31, 2015Observed: 4.4 ft at 2:45AM Aug 31, 2015Observed: 4.39 ft at 3:00AM Aug 31, 2015Observed: 4.39 ft at 3:15AM Aug 31, 2015Observed: 4.39 ft at 3:30AM Aug 31, 2015Observed: 4.39 ft at 3:45AM Aug 31, 2015Observed: 4.39 ft at 4:00AM Aug 31, 2015Observed: 4.38 ft at 4:15AM Aug 31, 2015Observed: 4.38 ft at 4:30AM Aug 31, 2015Observed: 4.37 ft at 4:45AM Aug 31, 2015Observed: 4.38 ft at 5:00AM Aug 31, 2015Observed: 4.36 ft at 5:15AM Aug 31, 2015Observed: 4.37 ft at 5:30AM Aug 31, 2015Observed: 4.36 ft at 5:45AM Aug 31, 2015Observed: 4.35 ft at 6:00AM Aug 31, 2015Observed: 4.36 ft at 6:15AM Aug 31, 2015Observed: 4.34 ft at 6:30AM Aug 31, 2015Observed: 4.34 ft at 6:45AM Aug 31, 2015Observed: 4.34 ft at 7:00AM Aug 31, 2015Observed: 4.33 ft at 7:15AM Aug 31, 2015Observed: 4.34 ft at 7:30AM Aug 31, 2015Observed: 4.33 ft at 7:45AM Aug 31, 2015Observed: 4.33 ft at 8:00AM Aug 31, 2015Observed: 4.32 ft at 8:15AM Aug 31, 2015Observed: 4.33 ft at 8:30AM Aug 31, 2015Observed: 4.32 ft at 8:45AM Aug 31, 2015Observed: 4.32 ft at 9:00AM Aug 31, 2015Observed: 4.31 ft at 9:15AM Aug 31, 2015Observed: 4.31 ft at 9:30AM Aug 31, 2015Observed: 4.31 ft at 9:45AM Aug 31, 2015Observed: 4.31 ft at 10:00AM Aug 31, 2015Observed: 4.31 ft at 10:15AM Aug 31, 2015Observed: 4.31 ft at 10:30AM Aug 31, 2015Observed: 4.3 ft at 10:45AM Aug 31, 2015Observed: 4.29 ft at 11:00AM Aug 31, 2015Observed: 4.29 ft at 11:15AM Aug 31, 2015Observed: 4.29 ft at 11:30AM Aug 31, 2015Observed: 4.29 ft at 11:45AM Aug 31, 2015Observed: 4.29 ft at 12:00PM Aug 31, 2015Observed: 4.29 ft at 12:15PM Aug 31, 2015Observed: 4.28 ft at 12:30PM Aug 31, 2015Observed: 4.28 ft at 12:45PM Aug 31, 2015Observed: 4.27 ft at 1:00PM Aug 31, 2015Observed: 4.27 ft at 1:15PM Aug 31, 2015Observed: 4.27 ft at 1:30PM Aug 31, 2015Observed: 4.26 ft at 1:45PM Aug 31, 2015Observed: 4.26 ft at 2:00PM Aug 31, 2015Observed: 4.26 ft at 2:15PM Aug 31, 2015Observed: 4.25 ft at 2:30PM Aug 31, 2015Observed: 4.26 ft at 2:45PM Aug 31, 2015Observed: 4.26 ft at 3:00PM Aug 31, 2015Observed: 4.26 ft at 3:15PM Aug 31, 2015Observed: 4.24 ft at 3:30PM Aug 31, 2015Observed: 4.25 ft at 3:45PM Aug 31, 2015Observed: 4.25 ft at 4:00PM Aug 31, 2015Observed: 4.24 ft at 4:15PM Aug 31, 2015Observed: 4.24 ft at 4:30PM Aug 31, 2015Observed: 4.24 ft at 4:45PM Aug 31, 2015Observed: 4.24 ft at 5:00PM Aug 31, 2015Observed: 4.22 ft at 5:15PM Aug 31, 2015Observed: 4.22 ft at 5:30PM Aug 31, 2015Observed: 4.23 ft at 5:45PM Aug 31, 2015Observed: 4.22 ft at 6:00PM Aug 31, 2015Observed: 4.22 ft at 6:15PM Aug 31, 2015Observed: 4.22 ft at 6:30PM Aug 31, 2015Observed: 4.21 ft at 6:45PM Aug 31, 2015Observed: 4.2 ft at 7:00PM Aug 31, 2015Observed: 4.2 ft at 7:15PM Aug 31, 2015Observed: 4.2 ft at 7:30PM Aug 31, 2015Observed: 4.2 ft at 7:45PM Aug 31, 2015Observed: 4.2 ft at 8:00PM Aug 31, 2015Observed: 4.2 ft at 8:15PM Aug 31, 2015Observed: 4.2 ft at 8:30PM Aug 31, 2015Observed: 4.19 ft at 8:45PM Aug 31, 2015Observed: 4.19 ft at 9:00PM Aug 31, 2015Observed: 4.18 ft at 9:15PM Aug 31, 2015Observed: 4.18 ft at 9:30PM Aug 31, 2015Observed: 4.18 ft at 9:45PM Aug 31, 2015Observed: 4.17 ft at 10:00PM Aug 31, 2015Observed: 4.18 ft at 10:15PM Aug 31, 2015Observed: 4.17 ft at 10:30PM Aug 31, 2015Observed: 4.16 ft at 10:45PM Aug 31, 2015Observed: 4.16 ft at 11:00PM Aug 31, 2015Observed: 4.17 ft at 11:15PM Aug 31, 2015Observed: 4.16 ft at 11:30PM Aug 31, 2015Observed: 4.16 ft at 11:45PM Aug 31, 2015Observed: 4.16 ft at 12:00AM Sep 01, 2015Observed: 4.15 ft at 12:15AM Sep 01, 2015Observed: 4.15 ft at 12:30AM Sep 01, 2015Observed: 4.15 ft at 12:45AM Sep 01, 2015Observed: 4.14 ft at 1:00AM Sep 01, 2015Observed: 4.15 ft at 1:15AM Sep 01, 2015Observed: 4.14 ft at 1:30AM Sep 01, 2015Observed: 4.14 ft at 1:45AM Sep 01, 2015Observed: 4.13 ft at 2:00AM Sep 01, 2015Observed: 4.13 ft at 2:15AM Sep 01, 2015Observed: 4.13 ft at 2:30AM Sep 01, 2015Observed: 4.13 ft at 2:45AM Sep 01, 2015Observed: 4.12 ft at 3:00AM Sep 01, 2015Observed: 4.12 ft at 3:15AM Sep 01, 2015Observed: 4.12 ft at 3:30AM Sep 01, 2015Observed: 4.12 ft at 3:45AM Sep 01, 2015Observed: 4.12 ft at 4:00AM Sep 01, 2015Observed: 4.11 ft at 4:15AM Sep 01, 2015Observed: 4.11 ft at 4:30AM Sep 01, 2015Observed: 4.11 ft at 4:45AM Sep 01, 2015Observed: 4.11 ft at 5:00AM Sep 01, 2015Observed: 4.1 ft at 5:15AM Sep 01, 2015Observed: 4.11 ft at 5:30AM Sep 01, 2015Observed: 4.09 ft at 5:45AM Sep 01, 2015Observed: 4.09 ft at 6:00AM Sep 01, 2015Observed: 4.1 ft at 6:15AM Sep 01, 2015Observed: 4.09 ft at 6:30AM Sep 01, 2015Observed: 4.09 ft at 6:45AM Sep 01, 2015Observed: 4.09 ft at 7:00AM Sep 01, 2015Observed: 4.08 ft at 7:15AM Sep 01, 2015Observed: 4.08 ft at 7:30AM Sep 01, 2015Observed: 4.09 ft at 7:45AM Sep 01, 2015Observed: 4.08 ft at 8:00AM Sep 01, 2015Observed: 4.08 ft at 8:15AM Sep 01, 2015Observed: 4.07 ft at 8:30AM Sep 01, 2015Observed: 4.07 ft at 8:45AM Sep 01, 2015Observed: 4.07 ft at 9:00AM Sep 01, 2015Observed: 4.08 ft at 9:15AM Sep 01, 2015Observed: 4.06 ft at 9:30AM Sep 01, 2015Observed: 4.07 ft at 9:45AM Sep 01, 2015Observed: 4.06 ft at 10:00AM Sep 01, 2015Observed: 4.06 ft at 10:15AM Sep 01, 2015Observed: 4.06 ft at 10:30AM Sep 01, 2015Observed: 4.06 ft at 10:45AM Sep 01, 2015Observed: 4.07 ft at 11:00AM Sep 01, 2015Observed: 4.06 ft at 11:15AM Sep 01, 2015Observed: 4.06 ft at 11:30AM Sep 01, 2015Observed: 4.05 ft at 11:45AM Sep 01, 2015Observed: 4.06 ft at 12:00PM Sep 01, 2015Observed: 4.05 ft at 12:15PM Sep 01, 2015Observed: 4.05 ft at 12:30PM Sep 01, 2015Observed: 4.05 ft at 12:45PM Sep 01, 2015Observed: 4.05 ft at 1:00PM Sep 01, 2015Observed: 4.04 ft at 1:15PM Sep 01, 2015Observed: 4.04 ft at 1:30PM Sep 01, 2015Observed: 4.05 ft at 1:45PM Sep 01, 2015Observed: 4.04 ft at 2:00PM Sep 01, 2015Observed: 4.04 ft at 2:15PM Sep 01, 2015Observed: 4.04 ft at 2:30PM Sep 01, 2015Observed: 4.04 ft at 2:45PM Sep 01, 2015Observed: 4.03 ft at 3:00PM Sep 01, 2015Observed: 4.03 ft at 3:15PM Sep 01, 2015Observed: 4.03 ft at 3:30PM Sep 01, 2015Observed: 4.03 ft at 3:45PM Sep 01, 2015Observed: 4.03 ft at 4:00PM Sep 01, 2015Observed: 4.03 ft at 4:15PM Sep 01, 2015Observed: 4.03 ft at 4:30PM Sep 01, 2015Observed: 4.02 ft at 4:45PM Sep 01, 2015Observed: 4.02 ft at 5:00PM Sep 01, 2015Observed: 4.01 ft at 5:15PM Sep 01, 2015Observed: 4.01 ft at 5:30PM Sep 01, 2015Observed: 4.01 ft at 5:45PM Sep 01, 2015Observed: 4.01 ft at 6:00PM Sep 01, 2015Observed: 4.01 ft at 6:15PM Sep 01, 2015Observed: 4.01 ft at 6:30PM Sep 01, 2015Observed: 4 ft at 6:45PM Sep 01, 2015Observed: 4.01 ft at 7:00PM Sep 01, 2015Observed: 4 ft at 7:15PM Sep 01, 2015Observed: 4 ft at 7:30PM Sep 01, 2015Observed: 4 ft at 7:45PM Sep 01, 2015Observed: 4 ft at 8:00PM Sep 01, 2015Observed: 3.99 ft at 8:15PM Sep 01, 2015Observed: 3.99 ft at 8:30PM Sep 01, 2015Observed: 3.99 ft at 8:45PM Sep 01, 2015Observed: 3.99 ft at 9:00PM Sep 01, 2015Observed: 3.98 ft at 9:15PM Sep 01, 2015Observed: 3.98 ft at 9:30PM Sep 01, 2015Observed: 3.98 ft at 9:45PM Sep 01, 2015Observed: 3.98 ft at 10:00PM Sep 01, 2015Observed: 3.97 ft at 10:15PM Sep 01, 2015Observed: 3.98 ft at 10:30PM Sep 01, 2015Observed: 3.97 ft at 10:45PM Sep 01, 2015Observed: 3.97 ft at 11:00PM Sep 01, 2015Observed: 3.97 ft at 11:15PM Sep 01, 2015Observed: 3.97 ft at 11:30PM Sep 01, 2015Observed: 3.97 ft at 11:45PM Sep 01, 2015Observed: 3.96 ft at 12:00AM Sep 02, 2015Observed: 3.96 ft at 12:15AM Sep 02, 2015Observed: 3.96 ft at 12:30AM Sep 02, 2015Observed: 3.95 ft at 12:45AM Sep 02, 2015Observed: 3.95 ft at 1:00AM Sep 02, 2015Observed: 3.95 ft at 1:15AM Sep 02, 2015Observed: 3.96 ft at 1:30AM Sep 02, 2015Observed: 3.95 ft at 1:45AM Sep 02, 2015Observed: 3.95 ft at 2:00AM Sep 02, 2015Observed: 3.95 ft at 2:15AM Sep 02, 2015Observed: 3.94 ft at 2:30AM Sep 02, 2015Observed: 3.94 ft at 2:45AM Sep 02, 2015Observed: 3.95 ft at 3:00AM Sep 02, 2015Observed: 3.94 ft at 3:15AM Sep 02, 2015Observed: 3.95 ft at 3:30AM Sep 02, 2015Observed: 3.94 ft at 3:45AM Sep 02, 2015Observed: 3.94 ft at 4:00AM Sep 02, 2015Observed: 3.93 ft at 4:15AM Sep 02, 2015Observed: 3.93 ft at 4:30AM Sep 02, 2015Observed: 3.94 ft at 4:45AM Sep 02, 2015Observed: 3.93 ft at 5:00AM Sep 02, 2015Observed: 3.92 ft at 5:15AM Sep 02, 2015Observed: 3.94 ft at 5:30AM Sep 02, 2015Observed: 3.94 ft at 5:45AM Sep 02, 2015Observed: 3.94 ft at 6:00AM Sep 02, 2015Observed: 3.93 ft at 6:15AM Sep 02, 2015Observed: 3.93 ft at 6:30AM Sep 02, 2015Observed: 3.93 ft at 6:45AM Sep 02, 2015Observed: 3.92 ft at 7:00AM Sep 02, 2015Observed: 3.91 ft at 7:15AM Sep 02, 2015Observed: 3.92 ft at 7:30AM Sep 02, 2015Observed: 3.91 ft at 7:45AM Sep 02, 2015Observed: 3.92 ft at 8:00AM Sep 02, 2015Observed: 3.92 ft at 8:15AM Sep 02, 2015Observed: 3.92 ft at 8:30AM Sep 02, 2015Observed: 3.91 ft at 8:45AM Sep 02, 2015Observed: 3.91 ft at 9:00AM Sep 02, 2015Observed: 3.9 ft at 9:15AM Sep 02, 2015Observed: 3.9 ft at 9:30AM Sep 02, 2015Observed: 3.91 ft at 9:45AM Sep 02, 2015Observed: 3.9 ft at 10:00AM Sep 02, 2015Observed: 3.91 ft at 10:15AM Sep 02, 2015Observed: 3.92 ft at 10:30AM Sep 02, 2015Observed: 3.92 ft at 10:45AM Sep 02, 2015Observed: 3.9 ft at 11:00AM Sep 02, 2015Observed: 3.91 ft at 11:15AM Sep 02, 2015Observed: 3.9 ft at 11:30AM Sep 02, 2015Observed: 3.9 ft at 11:45AM Sep 02, 2015Observed: 3.89 ft at 12:00PM Sep 02, 2015Observed: 3.89 ft at 12:15PM Sep 02, 2015Observed: 3.89 ft at 12:30PM Sep 02, 2015Observed: 3.89 ft at 12:45PM Sep 02, 2015Observed: 3.9 ft at 1:00PM Sep 02, 2015Observed: 3.9 ft at 1:15PM Sep 02, 2015Observed: 3.89 ft at 1:30PM Sep 02, 2015Observed: 3.89 ft at 1:45PM Sep 02, 2015Observed: 3.89 ft at 2:00PM Sep 02, 2015Observed: 3.89 ft at 2:15PM Sep 02, 2015Observed: 3.89 ft at 2:30PM Sep 02, 2015Observed: 3.89 ft at 2:45PM Sep 02, 2015Observed: 3.88 ft at 3:00PM Sep 02, 2015Observed: 3.88 ft at 3:15PM Sep 02, 2015Observed: 3.88 ft at 3:30PM Sep 02, 2015Observed: 3.88 ft at 3:45PM Sep 02, 2015Observed: 3.88 ft at 4:00PM Sep 02, 2015Observed: 3.88 ft at 4:15PM Sep 02, 2015Observed: 3.87 ft at 4:30PM Sep 02, 2015Observed: 3.88 ft at 4:45PM Sep 02, 2015Observed: 3.87 ft at 5:00PM Sep 02, 2015Observed: 3.88 ft at 5:15PM Sep 02, 2015Observed: 3.87 ft at 5:30PM Sep 02, 2015Observed: 3.87 ft at 5:45PM Sep 02, 2015Observed: 3.86 ft at 6:00PM Sep 02, 2015Observed: 3.86 ft at 6:15PM Sep 02, 2015Observed: 3.86 ft at 6:30PM Sep 02, 2015Observed: 3.86 ft at 6:45PM Sep 02, 2015Observed: 3.86 ft at 7:00PM Sep 02, 2015Observed: 3.85 ft at 7:15PM Sep 02, 2015Observed: 3.86 ft at 7:30PM Sep 02, 2015Observed: 3.85 ft at 7:45PM Sep 02, 2015Observed: 3.85 ft at 8:00PM Sep 02, 2015Observed: 3.86 ft at 8:15PM Sep 02, 2015Observed: 3.85 ft at 8:30PM Sep 02, 2015Observed: 3.84 ft at 8:45PM Sep 02, 2015Observed: 3.85 ft at 9:00PM Sep 02, 2015Observed: 3.84 ft at 9:15PM Sep 02, 2015Observed: 3.84 ft at 9:30PM Sep 02, 2015Observed: 3.84 ft at 9:45PM Sep 02, 2015Observed: 3.83 ft at 10:00PM Sep 02, 2015Observed: 3.84 ft at 10:15PM Sep 02, 2015Observed: 3.84 ft at 10:30PM Sep 02, 2015Observed: 3.84 ft at 10:45PM Sep 02, 2015Observed: 3.83 ft at 11:00PM Sep 02, 2015Observed: 3.84 ft at 11:15PM Sep 02, 2015Observed: 3.83 ft at 11:30PM Sep 02, 2015Observed: 3.83 ft at 11:45PM Sep 02, 2015Observed: 3.83 ft at 12:00AM Sep 03, 2015Observed: 3.82 ft at 12:15AM Sep 03, 2015Observed: 3.82 ft at 12:30AM Sep 03, 2015Observed: 3.83 ft at 12:45AM Sep 03, 2015Observed: 3.82 ft at 1:00AM Sep 03, 2015Observed: 3.82 ft at 1:15AM Sep 03, 2015Observed: 3.82 ft at 1:30AM Sep 03, 2015Observed: 3.82 ft at 1:45AM Sep 03, 2015Observed: 3.82 ft at 2:00AM Sep 03, 2015Observed: 3.81 ft at 2:15AM Sep 03, 2015Observed: 3.82 ft at 2:30AM Sep 03, 2015Observed: 3.82 ft at 2:45AM Sep 03, 2015Observed: 3.81 ft at 3:00AM Sep 03, 2015Observed: 3.82 ft at 3:15AM Sep 03, 2015Observed: 3.81 ft at 3:30AM Sep 03, 2015Observed: 3.81 ft at 3:45AM Sep 03, 2015Observed: 3.81 ft at 4:00AM Sep 03, 2015Observed: 3.8 ft at 4:15AM Sep 03, 2015Observed: 3.81 ft at 4:30AM Sep 03, 2015Observed: 3.81 ft at 4:45AM Sep 03, 2015Observed: 3.8 ft at 5:00AM Sep 03, 2015Observed: 3.8 ft at 5:15AM Sep 03, 2015Observed: 3.81 ft at 5:30AM Sep 03, 2015Observed: 3.81 ft at 5:45AM Sep 03, 2015Observed: 3.8 ft at 6:00AM Sep 03, 2015Observed: 3.8 ft at 6:15AM Sep 03, 2015Observed: 3.8 ft at 6:30AM Sep 03, 2015Observed: 3.8 ft at 6:45AM Sep 03, 2015Observed: 3.79 ft at 7:00AM Sep 03, 2015Observed: 3.79 ft at 7:15AM Sep 03, 2015Observed: 3.8 ft at 7:30AM Sep 03, 2015Observed: 3.8 ft at 7:45AM Sep 03, 2015Observed: 3.79 ft at 8:00AM Sep 03, 2015Observed: 3.79 ft at 8:15AM Sep 03, 2015Observed: 3.79 ft at 8:30AM Sep 03, 2015Observed: 3.79 ft at 8:45AM Sep 03, 2015Observed: 3.79 ft at 9:00AM Sep 03, 2015Observed: 3.78 ft at 9:15AM Sep 03, 2015Observed: 3.79 ft at 9:30AM Sep 03, 2015Observed: 3.78 ft at 9:45AM Sep 03, 2015Observed: 3.78 ft at 10:00AM Sep 03, 2015Observed: 3.78 ft at 10:15AM Sep 03, 2015Observed: 3.78 ft at 10:30AM Sep 03, 2015Observed: 3.78 ft at 10:45AM Sep 03, 2015Observed: 3.78 ft at 11:00AM Sep 03, 2015Observed: 3.78 ft at 11:15AM Sep 03, 2015Observed: 3.77 ft at 11:30AM Sep 03, 2015Observed: 3.77 ft at 11:45AM Sep 03, 2015Observed: 3.77 ft at 12:00PM Sep 03, 2015Observed: 3.77 ft at 12:15PM Sep 03, 2015Observed: 3.77 ft at 12:30PM Sep 03, 2015Observed: 3.77 ft at 12:45PM Sep 03, 2015Observed: 3.76 ft at 1:00PM Sep 03, 2015Observed: 3.76 ft at 1:15PM Sep 03, 2015Observed: 3.76 ft at 1:30PM Sep 03, 2015Observed: 3.75 ft at 1:45PM Sep 03, 2015Observed: 3.75 ft at 2:00PM Sep 03, 2015Observed: 3.75 ft at 2:15PM Sep 03, 2015Observed: 3.76 ft at 2:30PM Sep 03, 2015Observed: 3.75 ft at 2:45PM Sep 03, 2015Observed: 3.76 ft at 3:00PM Sep 03, 2015Observed: 3.76 ft at 3:15PM Sep 03, 2015Observed: 3.75 ft at 3:30PM Sep 03, 2015Observed: 3.75 ft at 3:45PM Sep 03, 2015Observed: 3.75 ft at 4:00PM Sep 03, 2015Observed: 3.75 ft at 4:15PM Sep 03, 2015Observed: 3.75 ft at 4:30PM Sep 03, 2015Observed: 3.75 ft at 4:45PM Sep 03, 2015Observed: 3.74 ft at 5:00PM Sep 03, 2015Observed: 3.74 ft at 5:15PM Sep 03, 2015Observed: 3.75 ft at 5:30PM Sep 03, 2015Observed: 3.74 ft at 5:45PM Sep 03, 2015Observed: 3.74 ft at 6:00PM Sep 03, 2015Observed: 3.75 ft at 6:15PM Sep 03, 2015Observed: 3.75 ft at 6:30PM Sep 03, 2015Observed: 3.75 ft at 6:45PM Sep 03, 2015Observed: 3.74 ft at 7:00PM Sep 03, 2015Observed: 3.74 ft at 7:15PM Sep 03, 2015Observed: 3.74 ft at 7:30PM Sep 03, 2015Observed: 3.73 ft at 7:45PM Sep 03, 2015Observed: 3.75 ft at 8:00PM Sep 03, 2015Observed: 3.74 ft at 8:15PM Sep 03, 2015Observed: 3.74 ft at 8:30PM Sep 03, 2015Observed: 3.73 ft at 9:00PM Sep 03, 2015Observed: 3.74 ft at 9:15PM Sep 03, 2015Observed: 3.74 ft at 9:30PM Sep 03, 2015Observed: 3.74 ft at 9:45PM Sep 03, 2015Observed: 3.74 ft at 10:00PM Sep 03, 2015Observed: 3.73 ft at 10:15PM Sep 03, 2015Observed: 3.73 ft at 10:30PM Sep 03, 2015Observed: 3.73 ft at 10:45PM Sep 03, 2015Observed: 3.73 ft at 11:00PM Sep 03, 2015Observed: 3.73 ft at 11:15PM Sep 03, 2015Observed: 3.72 ft at 11:30PM Sep 03, 2015Observed: 3.73 ft at 11:45PM Sep 03, 2015Observed: 3.72 ft at 12:00AM Sep 04, 2015Observed: 3.73 ft at 12:15AM Sep 04, 2015Observed: 3.72 ft at 12:30AM Sep 04, 2015Observed: 3.71 ft at 12:45AM Sep 04, 2015Observed: 3.72 ft at 1:00AM Sep 04, 2015Observed: 3.72 ft at 1:15AM Sep 04, 2015Observed: 3.72 ft at 1:30AM Sep 04, 2015USGS--Water Resources of the United StatesMCWI4(plotting HGIRV) Graph Created (2:47AM Sep 4, 2015)ObservedLatest observed value: 3.72 ft at 1:30 AM CDT 4-Sep-2015. Flood Stage is 10 ft
Flood Impacts

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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.
Flood Categories (in feet)
Major Flood Stage: 15.5
Moderate Flood Stage: 14.5
Flood Stage: 10
Action Stage: 6
Low Stage (in feet): 0

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) 13.70 ft on 04/06/1965
(6) 13.06 ft on 08/31/1962
(7) 12.59 ft on 04/01/1993
(8) 12.44 ft on 04/07/1951
(9) 12.30 ft on 05/23/2004
(10) 12.25 ft on 07/08/1969
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 7.54 ft on 06/30/2014
(2) 9.36 ft on 06/20/2014
(3) 6.63 ft on 04/30/2014
(4) 8.61 ft on 07/14/2013
(5) 8.07 ft on 06/25/2013
(6) 9.11 ft on 06/13/2013
(7) 7.18 ft on 06/09/2013
(8) 6.48 ft on 06/05/2013
(9) 8.90 ft on 05/28/2013
(10) 9.44 ft on 05/20/2013
Show More Recent Crests

(P): Preliminary values subject to further review.

Collaborative Agencies Collapse
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
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Page last modified: 13-Aug-2015 2:15 AM
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