A “dominant” run, which witnesses millions of salmon battling upstream to spawn, occurs every four years, followed by years of much smaller runs.  The next dominant run will be in 2002, when the sockeye will be joined by chinook, coho and pink salmon.  The exact dates of the late summer-early fall salmon run depend on temperature, rainfall and water levels. Many wild critters live in this park, among them bears, beavers, and river otters.

The park has an important heritage, as pictographs on canyons walls indicate the presence of First Nations people long before European settlement.  Within the park are several cultural heritage sites, including archaeological sites that have uncovered evidence of large settlements and remnants of kekulis (pit houses).

The park contains 26km of trails that are suitable for hiking and mountain biking in the summer, and for cross-country skiing and snowshoeing in the winter. Roderick Haig-Brown Provincial Park has several beautiful walks and low-key hikes; the Lower Trail System provides acces to viewing the salmon run along the Adams River. You shouldn't miss the Reinecker Creek self-guided nature walk here, which leads to Margaret Falls.

Iin Roderick Haig-Brown Provincial Park, angling for rainbow trout, dolly varden, and whitefish is popular, with the canyon and the river mouth being among the most productive sites. Note: The Adams River is closed to salmon fishing year-round, and in spring is also closed to rainbow trout fishing.

Professionally guided whitewater rafting as well as whitewater canoeing and kayaking take place on the Adams River. Motorized watercraft are not permitted on the river and inner tubes and air mattresses are not recommended for travel on the Adams River as several people have been killed while using these devices.