Thunderbird Drive Boat Ramp is a public boat launch located on the Wisconsin River in Columbia County, approximately 5. 6 miles downstream from Portage near the Baraboo River confluence.

This access point serves as a popular take-out or put-in for paddlers and motorboats accessing the scenic stretch between Portage and Lake Wisconsin, an area known for sandbars and scenic bluffs.

The ramp provides access to a section of river that can experience heavy motorboat traffic on summer weekends but offers good paddling opportunities with multiple nearby sandbars for camping and picnicking.