Northeast Iowa had been getting good rains which had been helping local crops grow. But Tuesday's 2 to 5 inches of rain in Northeast Iowa led to some flooding in area croplands, although most is short-term.
Iowa State Extension crop specialist Brian Lang of Decorah says young corn plants can survive only 2 to 4 days of flooding, but soybean plants are more tolerant, suffering large yield reductions after 6 days of flooding.
Clay soils dry slower than silt loam soils, so there is a more significant adverse impact on crops.