CONCORD, Mich (WLMI)  In Jackson County—officials say a man drowned after his fishing boat overturned on Mill Pond in Concord Saturday.  A witness told police the Flint man’s rented flat-bottom boat overturned around 9-30AM—the man never resurfaced.  He was pulled from the water about a half-hour later.  Officials say he was temporarily working in the area and was staying at an hotel in Albion.