Inspectors will ask you where and when your watercraft was last used.

If you get a wire seal attached to your boat and trailer when leaving Lake Whatcom, and then come back to Lake Whatcom another day with the tether still intact, will you need to stop at a staffed inspection station?

Traveling with plants attached to your boat/trailer in Washington State is:

If you boat on a lake infested with Eurasian watermilfoil or other aquatic weeds, what is the best way to prevent the plants from spreading somewhere else?

Zebra and quagga mussels can attach themselves to hard surfaces but can be removed quite easily with a damp cloth.

Quagga and zebra mussels came to North America in the ballast tanks and on the anchor chains of large, transoceanic ships that entered the Great Lakes.