Updated: February 8, 2016, 12:12 pm
03/13: National Park Service issues mussel monitoring update for Lake Powell
The National Park Service has identified 14 adult quagga mussels attached to moored vessels and dock structures at the Wahweap Marina in Lake Powell over the last week.
05/10: Quagga mussel may have been found in Sand Hollow
Divers have found what appears to be a live adult quagga mussel in Sand Hollow Reservoir, about eight miles southwest of Hurricane in southwestern Utah.
11/09: Nevada man found guilty in quagga mussel case (link is a PDF)
In the first trial involving the park's mussel prevention regulations, a federal judge has ordered a Nevada man to pay a
$2,500 fine for failing to have his boat inspected for mussels before launching it on Lake Powell.
06/09: New zebra mussel prevention requirements on Lake Powell
Effective June 29, 2009, self-certification of watercraft will no longer be an option at all major launch ramps and screening for the invasive mussels by trained personnel will be mandatory for all vessels.