Invasive Threat Looms: Zebra Mussel DNA Found in Utah's River

For the first time, zebra mussel DNA has been detected in the Colorado River within Utah, raising alarms for wildlife officials. Fragments of the invasive species' DNA were found in water samples collected near Moab on August 25, 2026. This finding indicates a potential presence upstream, following an established infestation discovered near Loma, Colorado, in 2025. The Utah Division of Wildlife Resources (DWR) began extensive sampling in 2025, utilizing an eDNA autosampler near the Potash Boat Ramp in June and July 2026. Four of 22 samples tested positive for zebra mussel DNA, though this does not confirm a live infestation at the site. Officials are collaborating with federal agencies to assess the extent of the threat and monitor for species spread. To combat this emerging danger, the DWR is reinforcing prevention measures, urging all river users to clean, drain, and dry their watercraft thoroughly between water bodies. Mandatory boater education courses and vessel enrollment fees are also in place to mitigate the transport of aquatic invasive species.