FloodZoneMap.org

Much of the river flooding occurred across Iowa through the middle of the month when the area lost its snowpack and received heavy rainfall. A secondary period of flood was observed on the Winnebago River at Mason City from snowmelt and heavy rain that fell across southern Minnesota toward the latter half of the month. Other rivers in northern Iowa remain in flood through the end of March and into April from the melting snow across Minnesota. These river points were listed in the other flood epi