Aquatic Invasive Species Information

Watercraft Inspection Requirements

There are several regulations in place to protect Wyoming’s resources. All boaters should be aware of these regulations. Any watercraft transported into Wyoming from March 1 through November 30 must undergo a mandatory inspection by an authorized inspector prior to launching. Any watercraft that has been in a water infested with zebra/quagga mussels within the last 30 days, is required to undergo a mandatory inspection by an authorized inspector prior to launching during ALL months of the year. All watercraft must stop at any open watercraft check station on their route of travel, even if not intending to launch in Wyoming.

Any person transporting a watercraft who did not encounter a mandatory aquatic invasive species check station prior to reaching a water of the state may launch without further inspection if the watercraft has a properly affixed seal applied by an authorized inspector and is accompanied by a valid seal receipt during transit. The person transporting the watercraft may remove the seal immediately prior to launching on the destination water and must retain the seal and valid seal receipt while on the water.

All visible vegetation must be removed from a watercraft/trailer once it leaves the water. Boaters must drain all water from watercraft, including all compartments, after leaving a water. All bilge/ballast/live well plugs must be removed from the watercraft while transported by land in the state.

Click Here for more information



Aquatic invasive species (AIS) are organisms that are not native and cause significant harm to an ecosystem when introduced. Harmful impacts can occur to municipal water supplies, recreation, agriculture, aquaculture, and other commercial activities.

Click Here for more information

Drain Clean Dry

The Wyoming Game and Fish Department will conduct watercraft inspections at ports of entry, other border locations, and major waters around the state. These watercraft inspections will be marked with signs and all persons transporting watercraft must stop at these check stations.

Click Here for more information


All watercraft using Wyoming waters are required to display an Aquatic Invasive Species decal. Costs for the decal are $10 for motorized watercraft registered in Wyoming and $30 for motorized watercraft registered in other states.

Click Here for more information


Information, reports, monitoring, links, and videos on Aquatic Invasive Species.

Click Here for more information
Email Newsletter

Email Newsletter Sign Up

Stay up to date on all Wyoming Game and Fish news either by email or text message. Click the link below to get started.

Sign Up Today


Conserving Wildlife - Serving People