Southwest Wyoming Aquatic Invasive Species Information

Photo: Lucy Wold, WGFD
AIS Crew Leader Jessica Warner for the Evanston area and Wes Gordon AIS Crew Leader for the Green River area


Click here to learn about the Spring 2019 AIS watercraft requirements before launching your watercraft

April 13, 2019 is the official opening of watercraft inspection stations in southwest Wyoming

If you plan to enter the state outside of the hours posted on our website, please plan ahead and arrange an inspection with a private inspector prior to your arrival.There are numerous watercraft inspection sites and authorized inspectors in southwest Wyoming. Please click this link here to learn where you can go to get your watercraft inspected BEFORE LAUNCHING.

Photos: Lucy Wold, WGFD

(above) AIS Technicians Brad Murphy (above right) and Charlie Forrester conduct a routine watercraft inspection at Anvil Draw AIS Check Station June 15. WGFD AIS Technicians are the front-line when it comes to spotting invasive zebra or quagga mussels. They work hard to protect area waters for ALL of us who use water and get you on your way to have fun on the water as quickly as they can. Thank you for your patience!

Photos by Breezy Cukale White Mountain Library

Kids and their parents learned about Wyoming's invasive species and how not to let loose their pets into the ecosystems and what the consequences are for doing so. And.....they also had some fun while learning! Kids played Please don't eat me Mr. Turtle which is an adaptation from the Project WILD activity Quick Frozen Critters.
Click here to learn more about Don't Let it Loose!


Wes Gordon, Green River AIS Specialist, said that anyone transporting a boat into Wyoming March 1 through November 30, from out of state, is required to get the watercraft inspected for AIS before launching that watercraft in Wyoming. “Please remember that if you pass an open watercraft check station on your route of travel, you are still required to stop. Our staff will quickly verify your seal is valid and send you on your way. In addition, local companies who cater to watercraft users can become certified to inspect watercraft through this training and then can provide and charge customers for these services.”

For a list of infested waters visit:

For a list of inspection locations and private inspectors visit:

Aquatic invasive species are non-native organisms that can cause significant harm to an
ecosystem when introduced. Aquatic invasive species, like zebra and quagga mussels, are small organisms that could have huge impacts for Wyoming's waters, boaters, and anglers.
They can ruin fisheries, clog cooling systems in motorboats, foul hulls, and ruin equipment
Anyone who uses water or recreates on water will be impacted.

For more information please call Gordon at the Game and Fish Green River Office, 307-875-3225, extension 8622.

​Waterfowl hunters can help stop the spread of Aquatic Invasive Species



     Many people associate the threat of spreading AIS with activities such as boating and fishing; however, hunters are also at risk of moving aquatic invaders from one body to another! Please click here for detailed information on how you can reduce the rist of moving AIS if and when you go waterfowl hunting....


 Jeanie (above) Ken and Wes (above) and Ken, Jack, Mike, Ken and Bert practice finding AIS on a boat

WGFD Southwest Aquatic Invasive Species (AIS) Specialist Wes Gordon inspects a lot of boats! Every state with AIS, or with neighboring states that do have AIS, are working really hard to keep invasive species like zebra and quagga mussels out of their waters. They cannot do that without your help! Drain, Clean and Dry your watercraft after every use.



Green River Region AIS Specialist Wes Gordon talks to Monroe Intermediate School about AIS in Wyoming and what they can do to keep them out of Wyoming waters. Thank you Justin Lamb (teacher) for taking the photos of Wes!

Photos: Lucy Wold, WGFD
Wes Gordon, Southwest Aquatic Invasive Species Specialist and volunteer Cliff Pabst install a sign near the boat launch at the Sweetwater County Picnic Grounds. The sign should remind all watercraft users to Drain all the water from their vessel, Clean off all of the vegetation, and Dry the vessel to ensure any aquatic invasive species are removed.

Southwest Aquatic Invasive Species Coordinator Wes Gordon conducts a water quality sample on Flaming Gorge Reservoir. The sample will be sent to a laboratory to check for the presence of zebra or quagga mussel veligers.

Evanston AIS Coordinator Jessica Murray throws the plankton tow net to sample for aquatic invasive species on Flaming Gorge.

This is what zebra and quagga mussels look like when they become attached to an object.



Wes Gordon inspecting a boat at the Green River Game and Fish Office, working to keep aquatic invasive species like zebra and quagga mussels out of Wyoming waters. Drain, Clean and Dry your watercraft after every use. Thank you!

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