Association des lacs Notre-Dame et Usher - Notre-Dame & Usher Lakes Association - Association des lacs Notre-Dame et Usher

Following consultation with residents, the Lake Association has adopted Watercraft Guidelines designed to prevent the spread of milfoil on the lake. It’s simple. Just steer clear of the weed. We just knocked on every door around the lake to drop off a durable copy of the Guidelines Map which was produced to show the extent of milfoil coverage last summer. It’s not as bad this year, but it is still present in all of the red zones. Please stay out of the Red Zones, follow all of the Guidelines and keep clear of the buoys.
Printable version (PDF): Watercraft Guidelines
Printable version (PDF): Resident Consultation Survey on Eurasian Water Milfoil - July 2025

Lac Notre-Dame has bad milfoil. We placed yellow buoys to mark areas with milfoil close to the surface. Every bit of weed cut by your motor forms new weeds. Stay clear and raise your motor if you see weed below. Remove any cuttings at your shoreline.
ProcellaCOR herbicide permit position

With financial support from our members (Association membership fees & donations) and occasional financial support like the La Pêche Green Fund, we test samples of water from the lakes in early August. Thank you to all for the support!

If you see a blue-green film (looks like paint or pollen) floating on the surface of the water, take a photo and send it to info@lacnotredame.org
Steps you can take to prevent blue-green algae and how to do a jar test

A grass lawn near the shore attracts geese and goose poop. Naturalize your shoreline to prevent contamination and erosion.
Printable version (Bilingual PDF): Goose-Action-Plan

Keep our water clean. Share our tip sheet with your new neighbours and renters - binder page version available.
Printable version (Bilingual PDF): Clean Water

The map shows all inlets and outlets into the lakes. Lots are marked. Water testing locations are marked.