Dolbeau-Mistassini is a town in northeastern Quebec, Canada at the confluence of the Mistassibi River, Rivière aux Rats and the Mistassini River, on Lac Saint-Jean. Dolbeau-Mistassini is in the Regional County Municipality of Maria-Chapdelaine. According to the 2001 Statistics Canada Census: ·Population: 14,879 Source: [wikipedia: dolbeau-mistassini, quebec]