When Colorado Parks and Wildlife personnel tested a small pond that feeds the irrigation system at the Mesa County Fairgrounds, looking for invasive zebra mussels, the results came back as a surprise. … Mussels of different ages, including adult ones, were discovered during the early-October testing. … It seemed more likely that mussels might be present at some of the public areas along the Colorado River or on larger reservoirs with a lot of potential for cross-contamination involving things such as watercraft. … This very issue is high on the minds of Parks and Wildlife officials as the agency deals with an expanding zebra mussels problem along the Colorado River in multiple counties.

Other invasive species news:

• Active NorCal (Redding, Calif.): Fight against golden mussels intensifies with New Shasta-Trinity Lake protections