Spur 406 offers 6 primitive camping sites with covered picnic tables and BBQ grills along Amistad Reservoir, accessible on a first-come, first-served basis year-round.

A boat launch ramp is available at the end of the road, though water levels may affect usability and caution is advised during low water periods.

Amenities include vault toilets and trash disposal, but no water hookups or drinking water are available, making this ideal for self-sufficient paddlers and anglers seeking a remote, quiet camping experience.