Boat inspectors have stopped two boat vessels from entering the Lake Tahoe waters because there was a large infestation of invasive mussels on boats that were attempting to enter the waters of Lake Tahoe. Chris Kilian of the Tahoe Resource Conservation District says it’s a stark reminder of why inspections are mandatory at Lake Tahoe. Inspectors say they found about 100 invasive mussels – many suspected to be alive – in the hull of a powerboat traveling from Lake Pleasant, Arizona. The infestation was so large inspectors couldn’t remove them all so the boat wasn’t allowed to launch.