pFlash flooding ripped apart roadways and sidewalks in Houghton, in Michigan’s Upper Peninsula, on Sunday, June 17.ppImages from Agate Street, which runs downhill through Houghton towards the Keweenaw Waterway, showed the road entirely washed out.ppThe National Weather Service saida law enforcement in Houghton County reported “historic flood damage” resulting from four to eight inches of rain, and warned that thunderstorms could bring more flash flooding to the area.ppThe Michigan Department of Transportation (MDOT) announced multiple road closures in Houghton County and nearby areas. Credit: M.