Join the Wisconsin Zebra Mussel Monitoring Effort This Summer!
A Simple Way Every Lake Steward Can Make a Big Difference
Zebra mussels are a very damaging aquatic invasive species in the Midwest. Once they establish in a lake, they spread quickly, disrupt ecosystems, cut swimmers’ feet, clog equipment, and can cause a large financial impact on communities for long‑term management.
The good news: early detection works and it’s something every lake resident can help with.
This summer, from June through September 2026, Wisconsin’s Citizen Lake Monitoring Network has invited lake stewards across the state to take part in a simple, hands‑on zebra mussel monitoring project. It takes only a few minutes each month, requires almost no equipment, and provides critical data that helps protect our lakes.
Why This Matters
Zebra mussels often arrive unnoticed. By the time they’re visible on rocks, piers, or boats, they may already be well established. But they have a weakness: they love to colonize clean, flat surfaces.
That’s where you, with one ordinary brick, can help!
What You Need
A brick (or any flat, rough, fist‑sized object)
A piece of rope
A pier
A few minutes each month
This simple setup acts like a “sentinel station,” giving zebra mussels an easy place to settle.
How to Set Up Your Monitoring Brick
Choose the right spot
Near an inlet or outlet is ideal
Light wave action is helpful
Avoid areas with heavy muck or dense vegetation
Tie the brick to your pier
Lower it so it hangs one foot above the lake bottom
Make sure it’s fully submerged and not resting in sediment
Leave it in place
The brick becomes a perfect surface for early colonization
Your Monthly Check (June–September)
Once a month:
Lift the brick slowly
Look closely for tiny striped mussels or clusters
Run your hand over the surface
Early zebra mussels feel like sandpaper or gritty bumps
If you find nothing:
Lower the brick back to one foot above the bottom
Check again next month
If you find zebra mussles:
Take a clear photo of the brick or your hand
Email your name, address, and photo to: secretary@protectlakebeulah.org
Want a Visual Walk‑Through?
This short video from the Wisconsin Citizen Lake Monitoring Network shows exactly how the process works and what to look for:
A Small Action With Big Impact
Citizen science is one of the most powerful tools we have for protecting Wisconsin’s lakes. By participating, you’re helping create an early‑warning system that benefits your lake, your neighbors, and the entire watershed.
If you set up a monitoring brick this summer, let us know! We’d love to celebrate our community of lake stewards and share updates throughout the season.