Sorry, never heard of Ashland, Do you mean Ashland City on the Cumberland? Good Smallmouth, also near the Harpeth River (learned to shoot Gar there as a child), highly recommend the Harpeth Narrows. See links below:
The Harpeth River State Park is a linear park that manages nine access sites along 40- river miles. Sites include several natural, archaeological and historic areas. The park is popular for kayaking, canoeing, and hiking.