Courtesy Boat Inspection Page

An informational poster listing eleven invasive aquatic plants found in Maine, including Brazilian Elodea, Curly-leaf Pondweed, Eurasian Watermilfoil, European Naiad, Fanwort, European Frogbit, Hydrilla, Parrot Feather, Variable-leaf Watermilfoil, Yellow Floating Heart, and Water Chestnut, with illustrations and notes on legality and transport restrictions.

Why is the CBI program so important?

Here are some articles that illustrate the damage and recovery efforts for invasive plant species:

“Invasive milfoil has been found in Alamoosook Lake, the first known instance in Hancock County”

Ellsworth American - Read Article

“After Two Decades Of Underwater Weeding, Lovell Pond Homeowners Eradicate Invasive Milfoil”

Maine Public - Read Article

“$1.5M raised to battle invasive plants in Cobbossee lake”

WGME - Read Article

Before moving boats between waterbodies:

  • CLEAN off any mud, plants, and animals from boat, trailer, motor and other equipment. Discard removed material in a trash receptacle or on high, dry ground where there is no danger of them washing into any water body.

  • DRAIN all water from boat, boat engine, and other equipment away from the water.

  • DRY anything that comes into contact with the water. Drying boat, trailer and equipment in the sun for at least five days is recommended if rinsing your boat, trailer parts and other equipment with hot, high pressure water is not an option.

DEP’s invasive aquatic biologist John McPhedran demonstrates how to do a thorough boat inspection in under 3.5 minutes.

A sign with a red octagonal stop symbol warning about aquatic hitchhikers and urging to preserve Maine.
People inspecting a boat on the side of the road, with snow on the ground.

Kanokulas 2022 Report

  • 908 inspections @ Kanokulas

  • 51 plant fragments found and sent for identification

  • 0 Invasive’s found

  • 397 CBI hours at the boat ramp

Maine CBI Data Dashboard

Real time data from boat launches from around the state. Click on the image below to see the page.

Maine Department of Environmental Protection Boat Inspection Dashboard showing data for 2022, including a map of Maine, inspection counts, and a bar chart of plants entering and leaving a boat ramp.