Steve Stoler reports COLLIN COUNTY - A small army of biologists
converged on Lake Lavon Tuesday looking for zebra mussels. The
size of a thumbnail, these aquatic creatures can cause millions
of dollars in damage to lakes and public water systems. As News
8 first reported last week, the Texas Parks and Wildlife
Deparment discovered the adult mussels in Sister Grove Creek,
which flows into Lavon, the major water supply for 61 North
Texas cities. The zebra mussels are most likely to appear in the
northern waters of Lake Lavon near the creek's outlet, about 30
miles south of the original discovery. "Tthe zebra mussel is
known as an invasive species," said Texas Parks and Wildlife
fisheries biologist Bruce Hysmith. "In other words, we don't
want them." Two boats carrying state and federal biologists set
sail from a Caddo Park boat ramp near U.S. Highway 380. They
collected water samples from here to a North Texas Municipal
Water District pipeline 30 miles north in Grayson County. That's
where scientists believe ze