Twelve Mile Dam boat ramp on the Tongue River offers a free public access point 13 miles south of Miles City, featuring a boat launch, ADA-accessible fishing pier, and vault toilets.

The site provides primitive camping with level grassy sites, fire rings, and picnic tables on a first-come, first-served basis (7-night maximum), though there is no potable water or trash service.

Located on well-maintained grounds with river access and paths to the water, it's an excellent option for anglers and paddlers seeking free, no-frills recreation in eastern Montana.