Biologists have discovered a live adult zebra mussel below the Westwater Recreation Area in the Utah side of the Colorado River, raising the risk of the invasive species spreading in the state. The discovery was made Sept. 22, about a month after testing detected zebra mussel DNA in the water in Utah, according to a news release from the Utah Division of Wildlife Resources.
Invasive zebra mussels have made their way to the Utah portion of the Colorado River
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Utah News spotted this story published October 8, 2026 at Utah News Dispatch. Full coverage may follow as more sources report.