An invasive species was recently found in Candlewood Lake.  Zebra mussels were found attached to the foundation of the Rocky River power station.  This is the first time they have been found in Candlewood Lake.  Zebra mussels were found in recent years in Lake Lillinonah, Lake Zoar and the Housatonic River. 

First Light Power Resources, which owns the Lake, said in a press release that their consultant believes any pumping will likely spread the zebra mussels because there is no technology to stop the spread from the power station through pipe that transfers water between the Housatonic River and Candlewood Lake. 

An educational campaign encouraging boaters to clean, drain and dry boats before entering the water has been in place for a few boating seasons to try to stop the spread from other bodies of water into Candlewood.