 And while northwest Iowa had been consistently wetter than the rest of the state for nearly a year, Hall says floodwaters were pushed over the edge by the late June rain event that led to several areas in the region to see two to three times the average rainfall. He says places like Lake Park and Spirit Lake saw the wettest June on record. There was a report at Lake Park in Dickinson County of 18 inches of rain in the month of June. And just to put that in perspective,