Gravel River Provincial Park is a nature reserve in the Thunder Bay District of Ontario, Canada.

The cottages are accessed by Mountain Bay Road, which runs south through the park from Highway 17.

[1] The park may be used during the day for canoeing, fishing, walking, nature appreciation and wildlife viewing.

[3] The park is well-forested, and protects the land around the mouth of the slow-moving river, which meanders through the sands of its bird's foot deltaic fan.

Controlled burning may be used as a substitute for natural forest fires, which are necessary for maintenance and renewal of the vegetation.