Dorchester 's location in the flood plain of the Upper Iowa River makes it vulnerable to flooding ; the community was damaged by high waters in August 2007 . It was worse hit on 8 June 2008 and succeeding days : over seven inches ( over 18 cm ) of rain fell on the 8th , and resulting record high floods of 22 ½ feet ( 20 ½ m ) almost destroyed a trailer park that was a significant part of the tiny community . A LP gas tank from Dorchester was discovered just eight hours later in Lansing , on the opposite side of the county
record high floods
June 2008 Midwest floods
Dorchester, Iowa