Nahatlatch Park is reached from Highway 1 near Boston Bar by Boston Bar Station Road, Chaumox Road, and Nahatlatch Forest Service Road. BC Parks says the park entrance is about 26.5 kilometres northwest of Boston Bar, in the Lower Mainland region.
The park protects mountain peaks, glaciers, old-growth forests, a unique lake and river system, and one of the largest intact wetlands remaining in the Lower Mainland.
Nahatlatch is a rugged lakes-and-river destination. Frances, Hannah, and Nahatlatch lakes are linked by small streams, and their waters drain into the Nahatlatch River, 20 kilometres upstream from the Fraser. The river's rapids are suited to rafting and kayaking, while the lakes support quieter canoeing, cold-water swimming, lakeshore fishing, wildlife viewing, and rustic camping.
The park lies in Nlaka'pamux Nation traditional territory and protects coastal and interior forest transitions, old-growth subalpine stands, wetlands, and habitat for grizzly bears, black bears, lynx, cougars, wolves, coyotes, deer, beaver, bald eagles, osprey, and spotted owls.
Camp at rustic lake sites, paddle Frances, Hannah, and Nahatlatch lakes, kayak or raft the river with proper skill, swim cautiously, fish with a licence, cycle logging roads, hunt during open seasons, and watch wildlife.
Access uses an active logging road that can be narrow, rough, dusty, hilly, and busy on weekdays. Boil or treat all water. There are no designated hiking trails, ATVs are not allowed, e-bikes are restricted to roads or motorized areas, and canoeing below Frances Lake is not advisable.
