Situated alongside the Manitoba border, this remote park is approximately 473,000 hectares (1,170,000 acres) in size.

Located approximately 245 kilometres (152 mi) north of Red Lake, Ontario, the Opasquia has no road access, even during the winter highway season.

On the sides of the moraine, wave-cut terraces and segments of raised shoreline indicate the former limit of glacial Lake Agassiz.

Hundreds of others species of birds have been identified, and northern pike and walleye dominate the fisheries in this park.

There is one known fly-in tourist operation located within the park named Big Hook Wilderness Camps [1].