Tiverton is located on the eastern shore of Narragansett Bay, across the Sakonnet River from Aquidneck Island(also known as the Island of Rhode Island). Together with the adjacent town of Little Compton, the area is disconnected from the rest of the state of Rhode Island. The northern portion of the town is located on Mount Hope Bay. Tiverton is located west of the town of Westport and south of the city of Fall River located in Massachusetts. Much of the town is located along a granite ridge which runs in a north-south direction, rising approximately 170 feet in elevation from the bay. A large section of exposed granite can be observed at the highway cut for Route 24, near the Main Road interchange. Both beaches are located on the Sakonnet River. The cool breeze blows strong throughout the year. The beaches in Tiverton are Fogland Beach, which has lifeguards, and also can be used for fishing, hiking/walking, and wildlife/nature observation. Grinnell's Beach provides an excellent windsurfing area, and a view of the Sakonnet River and Portsmouth shoreline. Amenities include changing rooms, showers, and a children's playground. Fogland Beach also has lifeguards, and has areas for fishing, and hiking/walking. The cove area to the north of the beach is convenient for nature study.