People head out on a boat while at Rock Run Rookery Preserve Wednesday, Sept. 19, 2012, in Joliet. | Matthew Grotto~Sun-Times Media
Fishermen, including Joliet resident Gerald Scheidt (far left), stand on a pier Thursday, June 16, 2011, at the west lake of the Rock Run Rookery in Joliet, Ill. | Matthew Grotto~Sun-Times Media
Asian carp
DNA from silver carp, one of the two Asian species threatening the Great Lakes, was found in samples drawn from Lake Calumet. | File photo
The Will County Forest Preserve District is gearing up to battle a new invasive species — the dreaded Asian carp. Testing at Rock Run Rookery showed an 84-acre lake on Youngs Road south of Route 6 in Joliet is chock full of the non-native bottom …
