During 2025, Montana Fish,Wildlife and Parks staff inspected more than 120,000 watercraft. The inspections uncovered 38 mussel-fouled watercraft and 570 transporting aquatic weeds. Staff also identified more than 20,000 high-risk boats, which are boats that last launched in states with known AIS infestations; many of these were Montana residents that traveled out-of-state.

The Clearwater, Ravalli and Anaconda inspections stations saw the most traffic, collectively inspecting more than 35,000 watercraft. Data shows that the majority of out-of-state boats were from Idaho.

“We are also seeing a lot of Montana residents leaving the state, going to mussel-impacted areas and coming home,” Woolf said.
New for 2026, FWP will be contracting with the High Plains Conservation District for the first time to operate the Highway 12 watercraft inspection station outside of Helena and working with the Lincoln Conservation District to identify a new location the Eureka inspection stations.

“Montana is gearing up for another busy season for holding the line against invasive species,” Woolf said.
Stations begin operation in early March, specifically targeting snowbird traffic from the lower Colorado River area. Inspections are available by appointment through the winter. To arrange an nspection, call 406-444-2440.

Inspection data from the 2025 season is available on the Watercraft Inspection Dashboard.

Also see:
–CBB, June 14, 2025, ‘The Risk Is Quite Staggering’: Invasive Mussel Threat Spurs States To Create Near-Term Action Plan, https://columbiabasinbulletin.org/the-risk-is-quite-staggering-invasive-mussel-threat-spurs-states-to-create-near-term-action-plan/