The Gristmill Access Area is primarily used by hikers, anglers, rafters, and boaters. Dogs are permitted provided they are leashed. A cobblestone bar, which is accessible by vehicle, protrudes into the river.
This area provides a convenient takeout for rafters, as well as a good car top launching area for fishing boats. The site is also used by equestrians. An equestrian/hiking trail begins at Howe Avenue and terminates a short distance upstream from Gristmill, making the area a popular rest stop. Hikers enjoy the varied terrain and vegetation, as well as the many isolated waterfront areas in the vicinity.
The Gristmill Access is located off of Mira Del Rio Drive between Stoughton and Linda Rio.