Allenton Access provides a boat ramp and parking area for access to the Meramec River, located 3. 8 river miles upstream from the Big River junction. The 9.

8-acre site features a concrete boat ramp, parking lot, and restroom facilities surrounded by bottomland forest, making it suitable for both motorboat and canoe/kayak launches. Open 4 a. m. to 10 p. m.

daily (24-hour access for boating activities), with fishing permitted with appropriate permits.