Big Timber Boat Landing Access provides a hard surface boat ramp for accessing the Big Timber Division of Port Louisa National Wildlife Refuge, a 1,760-acre Mississippi River backwater complex featuring sloughs and bottomland forests.

Located on the southwestern edge of the division approximately 5. 5 miles north of refuge headquarters, the ramp offers access to excellent fishing and boating opportunities in Pool 17, with a parking lot available near the launch site.

Bank fishing is also available near the parking area for those without boats.