There’s no road to the island. NPS lists it 2.4 miles from Ross Dam; you can arrive in your own boat, a rental, or a reserved water taxi. From the south, reaching Ross Lake means crossing about five miles of Diablo Lake and portaging over a mile around Ross Dam. From the north, access follows a rough gravel road from Hope, British Columbia. All Ross Lake boat-in camps require a backcountry camping permit.
The island’s dock is usable only when the lake is at least 1,594 feet high, so check the current level before relying on it. Ross Lake can be calm in the morning and develop gusts and whitecaps later in the day. The water rarely gets above 50°F, even in summer.