Lake Powell quagga mussel infestation worsening More boats are exiting Lake Powell with quagga mussels attached By Mark Hadley Aquatic invasive species, or AIS, personnel from the Utah Department of Natural Resources have stopped more than 120 quagga mussel infested boats this year, most of which had visited Lake Powell, from launching at other bodies … Continue reading Lake Powell quagga mussel infestation worsening