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Aquatic Plant
Management
How can nuisance aquatic plant growth be controlled?
Since aquatic plant communities are the foundation of
lake ecosystems, aquatic plant management and nuisance control activities
require an aquatic plant management plan and permits issued by the Department
of Natural Resources.
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| Mechanical weed harvesting is one
method of controlling nuisance plant growth. |
Chemical, mechanical, and biological (like Purple Loosestrife
beetles, Eurasian water milfoil weevils) control methods of aquatic plants
always require a permit. Manual control (hand-pulling or raking) may require
a permit, depending on the specifics of the proposed project and the site.
Generally, a permit is required when plants are removed mechanically or
manually from an area greater than 30 feet in width along the shore.
Physical aquatic plant control methods include activities
such as bottom plant barriers and water level draw-downs. Because they
involve placing structures on the bed of a lake and/or affect lake water
levels, Chapter 30
or Chapter 31 permits are required.
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