"A widespread infestation in the Colorado River watershed would be devastating, Reclamation officials say, because the survival of the arid region is tied to the elaborate system of hydroelectric dams, canals and reservoirs.
"Yet the mussels are spreading rapidly in the Lower Colorado watershed. Young mussels float in the water column and get carried by the water currents downstream, while adults attach themselves to the bottoms of boats and can be transported miles away.
""We see major colonization on our equipment, and we don't see this becoming less and less of a problem, but rather more and more of a problem," said Leonard Willett, Reclamation's Lower Colorado River quagga mussel coordinator."
Tiny Eurasian Mussel Now Threatening Mighty Hoover Dam - NYTimes.com
Zebra Mussel Advisory - Glen Canyon National Recreation Area (U.S. National Park Service)