Which river is the city where MFC 29 was held located on?
MFC 29: MFC 29: Conquer was a mixed martial arts event held by the Maximum Fighting Championship (MFC) on April 8, 2011 at the Colosseum at Caesars Windsor in Windsor, Ontario. Windsor, Ontario:  It is on the southern shore of the Detroit River, directly across the river from Detroit, Michigan.
Detroit River