Bulletins
Restricted Activity: Margaret Lake - Water based recreational activities
Issued: April 01, 2025
Where: Margaret Lake and Creek, including the headwall and stream up to Turquoise Lake, and a small portion of Hector Lake at the mouth of Margaret Creek. See attached map (red hatched area).
What: Pursuant to Section 7(1) of the National Parks General Regulations, of the Canada National Parks Act, the following activity is restricted or prohibited by order of the Superintendent:
All recreational water-activities including watercraft use, fishing, and swimming in Margaret Lake, including associated tributaries and outlets. Prohibited watercraft include but are not limited to: kayaks, paddleboards, canoes, inflatable boats, or any other vessel. Fishing and the use of waders and wading boots is prohibited. Wading across a stream to stay on an official trail is permitted where there are no bridges across.
Why: Lab results have confirmed presence of Whirling Disease in Banff National Park. This parasitic disease affects some fish species but does not present any health risks for people or other mammals.
Westslope Cutthroat Trout (WSCT) are listed as a threatened species in Canada and are one of the fish species susceptible to the disease. This restriction is in effect to protect WSCT habitat from the whirling disease parasite and will remain in effect until alternate management strategies are implemented.The risk factors for spreading the disease include movement of: fish, mud/sediment, aquatic vegetation and water.
Penalty: Violators may be charged under the Canada National Parks Act: maximum penalty $25, 000.
Approved by: François Masse
Superintendent, Lake Louise, Yoho, Kootenay Field Unit
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