Core samples from Mille Lacs Lake may explain walleye woes

Feb 20, 20170

GARRISON, Minn.—Researchers hope to get to the bottom of the challenges that face Mille Lacs Lake walleyes by digging deep into the lake's past.

A group of researchers drilled seven core samples from the lake floor this past week, hoping to look back at least 50 years at what was going on then and now, specifically since the invasive species, spiny waterflea, was discovered there in 2009.