The North Cascades National Park Service Complex Fish Stocking Act is meant to continue the stocking of fish in some particular lakes in the North Cascades National Park. The lakes in question have been stocked since the late 1800s, prior to becoming national parks. The stocking originally began with local individuals transporting and adding the fish to the lakes, long before any level of government took over. Beginning in 1933, the Washington State Department of Fish and Wildlife became responsible for the stocking. Volunteer groups, working with State and National Park Services biologists followed careful management plans. Fishing in these lakes, which, without fish stocking, do not have native fish, is an important part of the area's economy and tourism.