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Invasive Species Resources

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Washington Department of Fish and Wildlife.
Washington Department of Fish and Wildlife.
Operators of watercraft not registered in Washington State, seaplanes, and commercial transporters of specified vessel types must purchase aquatic invasive species (AIS) prevention permits to help prevent the spread of AIS in Washington. AIS prevention permits are valid for one year and can be purchased online (under the "Other" Product Categories tab) or from any of the department's authorized license dealers. When purchasing online, you may select a preferred activation date. The permit will be valid for one year from that date.
City of Chicago. Department of Environment.
DOI. NPS. Yellowstone National Park.
If you plan to use your own boat or angler float tube, you’ll need a permit and a free Yellowstone aquatic invasive species inspection. You can speed up the inspection process by arriving with a boat that is clean, drained, and dry. Watercraft that arrive dirty or with standing water will be subject to decontamination. Watercraft that cannot be properly decontaminated will be prohibited from launching.
Montana Fish, Wildlife, and Parks.
DOI. NPS. Glacier National Park.
Glacier National Park waters are generally open for boating from mid-May through October. All watercraft require an NPS inspection and permit before launching. Prior cleaning, draining, and drying of all watercraft, both externally and internally, will reduce inspection time significantly.
King County Department of Natural Resources (Washington). Water and Land Resources Division.

Missouri Department of Agriculture.

Montana Department of Agriculture.
See also: Noxious Weeds for more resources

Washington Department of Agriculture.

General Statutes of Connecticut.
Montana Fish, Wildlife, and Parks.
Montana Fish, Wildlife, and Parks.
Montana Fish, Wildlife, and Parks.

Thurston County Noxious Weed Control (Washington).

Washington Administrative Code.

Washington State Noxious Weed Control Board.

The Washington State noxious weed list is updated every year, and all Washington residents can submit proposals to add or remove species, change the class of a listed noxious weed, or to change the designated area in which control is required for a Class B noxious weed. Anyone, including citizens, tribes, organizations, government agencies, and county noxious weed control boards may participate in the listing process by submitting a proposal or by submitting testimony about proposed changes to the noxious weed list. In fact, Washington's open, inclusive listing process is lauded by other states for its encouragement of public participation. Learn more about the listing process here.

Washington State Noxious Weed Control Board.
Montana Fish, Wildlife, and Parks.
Watercraft inspections are required. If you cannot get to an open inspection station you can get your watercraft inspected at a regional or area FWP office (PDF | 503 KB).