Yup Mr Neil Waugh and his sky is fallin' scenario.... I would hardly think that the GOA would shut down CTT fishing in the entire Milk, Waterton, Carbondale, Castle, Crow, Oldman, Highwood and Bow systems to protect the estimated 7000 purestock fish that live in 60-70 tiny headwater streams, roughly 100 fish per trib and it would be the Government of Alberta that would have to shut down the fishery because the Fed doesn't have the power. About the only person it would affect is me because I'm seem to be the only guy regularly fishes headwaters.........maybe Paul.
Edit; It seems I have stepped full on into the quagmire of Canadian politics.... apparently the Fed does have the power to shut the WSCT fishery where ever they deem necessary to protect the fish but the Province is responsible for administration,.................................. whatever the hell that means.