Deer Creek Flats and Baetis Bend (also known as Baetis Alley) is a popular multi-use access site along the Gallatin River featuring parking areas, sustainable angler trails, hardened river-access points for raft put-ins, and a dedicated kayak launch.

The site underwent restoration in 2020-2021 to address erosion and ecological degradation from heavy recreational use, including installation of durable-surface parking areas and an accessible fishing platform.

Located in Reach 3 of the Gallatin Canyon corridor near Highway 191, it serves both wade fishers and paddlers accessing the river.