Yellowstone seeks to stiffen invasive species rules, ban some boats

To defend against troublesome mussels, large motor boats and sailboats would have to be dried for 30 days before being launched.

To protect the headwaters of three major Western rivers from invasive, troublesome mussels, Yellowstone National Park wants to require larger boats to undergo a 30-day “dry time” before launching.

New rules up for comment also would ban any boat that’s once been contaminated by invasive Dreissena zebra or quagga mussels, regardless of decontamination cleaning.

The proposal builds on existing rules, including inspection of all watercraft, designed to protect Yellowstone and downstream waters from the fingernail-sized freshwater bivalves that cling to hard structures like boat hulls, docks and i...


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