AIS Inspection Stations Are Open for the 2025 Season

Aquatic Invasive Species (AIS) inspection stations are open for the 2025 season. Early-season watercraft inspection stations are now operating in Ravalli (managed by the Confederated Salish and Kootenai Tribes), Dillon (Beaverhead Conservation District), and Anaconda (Montana Fish, Wildlife & Parks). Additional stations will be opening soon as spring boating activity increases.

So far, more than 350 boats have been inspected, and two mussel-fouled watercraft have already been intercepted. Both vessels originated from Lake Havasu—one was a pontoon boat on its way to Washington, the other an outboard fishing boat headed to Alberta. Thanks to advance notice from Arizona officials, inspectors in Montana were ready.

These early interceptions show how vital inspection stations are in protecting Montana’s lakes and rivers from invasive mussels and other aquatic threats. Once established, invasive mussels can clog infrastructure, disrupt ecosystems, and cause lasting harm to our waterways. Early-season inspections—particularly for watercraft returning from high-risk areas like the lower Colorado River basin—are a key part of Montana’s prevention strategy.

This work wouldn’t be possible without the collaboration of local partners, including tribal nations, conservation districts, and state agencies. Their dedication continues to make Montana’s AIS program one of the most effective in the country.

As always, boaters are reminded to Clean, Drain, and Dry all watercraft and equipment—and to stop at all open inspection stations. It’s the law and a simple way to help protect the places we all enjoy.

Schedule provided by MT FWP.