Three Mile Wash Three Mile Wash offers shoreline parking and boat access. Access is via the Apache Trail National Forest Scenic Byway, a scenic mountain road. Nearby are views of mountains with abundant wildlife. Because of the ability to park right on next to the water, this locations offers a great get away for families and individuals during the hot summer months. Whether you’re taking a day trip, or staying several nights, Three Mile Wash is perfect for any outing you are planning.