I'm not a scientist, but these larva have been "found" in other lakes in Colorado.  How would you explain that the adults haven't?  Lake Grandby was one of these where adults haven't been found, and they have been testing for at least three years.  Pueblo reservoir was infected yet it is now given a clean bill of health.  How did they get rid of the adults, surely not just from inspections and everyone cleaning and drying  their boats.  The dangerous precedent is the right to boat in waters.  Many lakes could be shut down just out of fear of the mussels.  The Pinery reservoir is one of these that was already closed to non-motorized craft.  I'm not advocating to boat recklessly, at the risk of our water supply.  How do you know that the mussels will decimate our trout populations?  The New Zealand mud snail was supposed to do that, but the trout in our rivers do not seem to be adversely affected.  Do you know that the mussels have the same impact on rivers as lakes?