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What boat owners should know about AIS

Aquatic invasive species (AIS) are non-native plants, animals or pathogens that can invade new waterbodies by hitching a ride on watercraft and gear. AIS can include mussels, snails, fish, plant fragments or larva that can only be viewed under a microscope.

Wednesday, June 3, 2020

Inspection reminder for recreational and tournament boat owners entering Montana

With the many fishing tournaments coming up this summer ALL boaters are reminded to stop at ALL watercraft inspection stations. In addition, all watercraft entering Montana are required to be inspected for aquatic invasive species and must obtain an inspection before launching on Montana waters. Remember, this includes not only nonresident boats entering the state, but also resident boats that were taken out of state and are reentering Montana.

Wednesday, June 3, 2020

Inspectors find more boats transporting invasive species into Montana

Montana watercraft inspection stations have intercepted 13 boats carrying invasive mollusks into the state this year. As of May 30, inspectors have caught 12 boats with invasive zebra or quagga mussels and one boat with red rim melania snails attached to watercraft.

Wednesday, June 3, 2020

Ballast boats need extra attention to stop AIS

Boat owners transporting watercraft with ballast tanks will undergo additional cleaning at watercraft inspection stations to prevent the spread of aquatic invasive species.

Friday, May 22, 2020

New AIS rules for nonresident boaters and anglers

Nonresident boaters and anglers will see new aquatic invasive species rules when they visit Montana this year. 

Friday, May 22, 2020

FWP dedicated to protecting Montana’s waterways

Memorial Day Weekend is the unofficial start to summer in Montana, and as boaters venture out to our rivers and lakes, please keep in mind the rules aimed at protecting our waters and preventing the spread of aquatic invasive species

Thursday, May 21, 2020

Information gathering closes May 17 for Lake Elmo invasive Asian clam response

Online comments and ideas for Montana Fish, Wildlife and Parks’ proposal to remove invasive Asian clams from Lake Elmo in Billings Heights are due by May 17, 2020

Wednesday, May 13, 2020
Categories: AIS News

Inspectors find mussels on sailboat headed for Idaho

On April 22, the Montana Fish, Wildlife & Parks Dillon watercraft inspection station intercepted a sailboat coming from Lake Pleasant, AZ, carrying invasive mussels. The boat owner was traveling north on Interstates 15 and 90 in route to northern Idaho. The sailboat was not launching in Montana.

Friday, April 24, 2020

Certified Boater training for Tiber Reservoir now available online

Certified Boater training for Tiber Reservoir is available online at  While Fish, Wildlife & Parks offices are closed to the public, persons interested in applying for the Certified Boater designation must complete the training online.

Friday, April 10, 2020
Categories: Certified Boaters

Watercraft Inspection Station sees rush of Canadian boaters

Inspectors at the Dillon watercraft inspection station had a busy start to early season boat inspections.  Located south of Dillon on Interstate 15, the watercraft inspection station is staffed by crews of two seasonal FWP employees who check for aquatic invasive species (AIS) on boats traveling north. 

Tuesday, March 31, 2020



AIS Bureau, Montana FWP
1420 East Sixth Avenue
Helena, MT 59620
Phone: (406) 444-2440

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To protect Montana’s waters and native aquatic species, please follow these rules and guidelines:

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