Douglas is a mostly catholic community of approximately 300 residents in Renfrew County, Ontario. It has its own hydroelectric dam located on the third chute of the Bonnechere River. There is a small Catholic Church Located at the North end of town next to the Catholic school. Douglas has its own post office, convenience store and hotel. There is a large tractor dealership in the heart of downtown. Douglas is famous for its annual St. Patrick's Day celebration which draws hundreds of people every year. Douglas is 23 kilometers from Renfrew, Ontario. Renfrew is a county in the Canadian province of Ontario. ... Hydroelectric dam diagram The waters of Llyn Stwlan, the upper reservoir of the Ffestiniog Pumped-Storage Scheme in north Wales, can just be glimpsed on the right. ... The Bonnechere River in Renfrew. ... Renfrew is a town on the Bonnechere River in eastern Ontario, Canada in Renfrew County. ...