Season and regulations
Lake Chelan is listed under WDFW's Eastside lakes special rules: trout are open year-round under statewide minimum size and daily limits except that wild cutthroat trout must be released; other game fish are open year-round under statewide limits; and salmon are open year-round with a 15-inch minimum size, a daily limit of one and no catch record card required.
A Washington fishing license is required, including inside Lake Chelan National Recreation Area, where the NPS follows state rules and does not sell licenses; a Discover Pass may be needed at state park and WDFW access sites. Check the current WDFW Sport Fishing Rules pamphlet and emergency rule changes before you go, and the Department of Health consumption advisory for Lake Chelan.