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Best way to clear lilly pads from lake for swimming #874455

Asked June 24, 2024, 2:21 PM EDT

Hi there. Our lake in Barry County fills with dense lily pads and other plants from the shore to at least 100 feet out, making it difficult to access the lake for swimming, kayaking etc. We have always cleared a path with a scythe and gardening shears but the aquatic plants grow so fast, we can't keep up and the growth gets denser and farther out each year. Now we're renting the house for short-term rentals and know guests will want to swim. Someone suggested "lake mats" but dropping synthetic materials onto a lake bottom doesn't feel right. Someone suggested an underwater motor to create a current but that would burn a huge amount of fossil fuels. Obviously, we don't want to pollute the lake in any way. so we are looking for the best environmentally friendly method for clearing a path from the shore to clear water. Please let me know best practices and if there are companies or services in Michigan that can help us!

Barry County Michigan

Expert Response

Hello,

Looks like a beautiful lake! Aquatic plants are incredibly important to a lake ecosystem, so a balanced approach for removal is important. For any approach you take, make sure to remove only what is necessary to move your boat into deeper waters. Also, some approaches will likely require permits from the Michigan Department of Environment, Great Lakes, and Energy (EGLE). For example, permits will likely be needed for: using mats, a blower, or herbicide. Your local EGLE permit staff is Kelsey Krupp,<personal data hidden>, <personal data hidden>

Hand removal is the best practice, but as you stated, you will likely need to clear your channel a couple times a year. If you can still do this, it is recommended. Clearing the path by hand once with subsequent regular boat traffic from your renters may keep the channel clear enough for access.

Benthic barriers are a non chemical way to keep an area clear of aquatic plants, however, their use is restricted in Michigan and you will need to reach out to EGLE to discuss your project idea before you install anything.

Herbicides can be used and it is recommended to use a company with certified applicators. To get information on best practices, permits, and companies you can contact Aquatic Nuisance Control Program Staff, <personal data hidden>,<personal data hidden>.

Best,

~Erick

An Ask Extension Expert Replied June 28, 2024, 10:59 AM EDT

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