All lakes and rivers in Banff, Alberta, are closed to all paddling and fishing until March 31, 2026. This move by Parks Canada aims to stop the spread of a parasite known as whirling disease that can kill most young trout and salmon.
The closure was expanded after the disease was found in Lake Louise for the first time in 2025. François Masse, a park superintendent, said the parasite was likely carried into the lake by mud or water on gear like boats or fishing equipment rather than moving there naturally.
New permanent rules will also start in the spring of 2026 for specific areas. Paddling and the use of wading boots will be banned entirely at Lake Minnewanka, Bow Lake, and Moraine Lake to protect sensitive fish populations like the Westslope Cutthroat Trout.
While groups like the Northwest Voyageurs Canoe and Kayak Club have expressed disappointment with the timing, officials say the restrictions are necessary. Marie Veillard, a project co-ordinator, noted that cleaning gear has not been enough to stop the disease, which was first found in Canada at Johnson Lake in August 2016.
Park wardens are monitoring the area to ensure people stay off the water. Anyone who breaks these rules could face a fine of up to $25,000 under the Canada National Parks Act.
