What You Need to Know About Quagga Mussels and the Snake River This Season

Two years ago, a tiny invasive species caused a big disruption. Quagga mussels—known for damaging ecosystems, clogging pipes, and spreading quickly—were detected in the Snake River near Twin Falls. A year later, tests showed they were still present in certain areas, sparking new protocols, stricter guidelines, and a lot of public concern.

For us at AWOL Adventure Sports, it was a tough season. Fewer people ventured down to the river. Some were confused about where they could paddle. Others weren’t sure if activities like kayaking Twin Falls or zip lining over the Snake River Canyon were even happening.

Now, we’re setting the record straight: AWOL is open, the river is open, and the adventure is very much alive.

The River is Open—And So Are We

All major access points for paddling and boating are currently open, including our home base at Centennial Waterfront Park, the Twin Falls launch area, and the stretch of river that winds its way up to the stunning base of Shoshone Falls from Pillar Falls. The launch above the falls is scheduled to reopen by mid-June, as conditions allow.

This means you can still rent a kayak or paddleboard, launch from our park location, and take in the sights of Perrine Bridge, Pillar Falls, and the towering cliffs of the canyon. You can still join a guided kayak tour to the base of Shoshone Falls or hop on one of our scenic boat tours upriver. And yes, the zip line course is in full swing.

Clean Boats, Clear Conscience

Because of the mussel detections, the Idaho Department of Agriculture has implemented some key steps to help stop the spread of these invasive hitchhikers.

When you arrive at the park, you’ll notice mandatory watercraft inspection stations. These are for all boats—yes, even kayaks, paddleboards, and canoes. Before you leave, a free hotwash station will give your gear a high-temperature rinse to kill and remove any lingering mussels. It’s fast, effective, and part of protecting Idaho’s most beloved waterways.

ISDA has posted clear signage, and the inspections are managed directly by state officials, so you’ll be guided every step of the way.

To learn more about Idaho’s protocols and updates on quagga mussel containment, visit the Idaho State Department of Agriculture website.