Deep River is a town in Renfrew County, Ontario, Canada. It is located along the Ottawa River (see also Ottawa Valley), about 200 kilometres north-west of Ottawa on the Trans-Canada Highway . Deep River is opposite the Laurentian Mountains.
The primary industry centres around research at Atomic Energy of Canada Limited in nearby Chalk River, Ontario. Technically, the plant belongs to the municipality of Deep River. The property taxes account for the majority of Deep River's budget.
