Fishing at McDonell Lake is governed by British Columbia freshwater fishing regulations. A valid BC fishing license is required, and anglers must follow current rules on seasons, catch limits, and permitted gear.
McDonell Lake is located in Region 6 (Skeena). Note that the nearby Copper River (Zymoetz River) is Classified Water requiring a steelhead stamp. While this doesn't affect fishing at the lake itself, if you plan to fish the Copper River, additional regulations apply. Always check the latest provincial regulations before planning your fishing trip.