But it follows weeks of high flows and record releases from dams in Montana and the Dakotas . NEW : A second breach occurred in Holt County , Missouri . NEW : Earlier , a levee broke in Atchison County , Missouri . The flood could affect the town of Hamburg , Missouri . The Mississippi River could see near - record flooding this year .
NEW : A second breach occurred in Holt County , Missouri . NEW : Earlier , a levee broke in Atchison County , Missouri . The flood could affect the town of Hamburg , Missouri . The Mississippi River could see near - record flooding this year .