One of the biggest threats to the health of Michigan lakes has been found in Glen Lake.But while strands of Eurasian water milfoil (EWM) have been retrieved from the boat launch area on little Glen, no evidence has surfaced yet proving that the fast-growing invasive species has taken a foothold in lake bottomlands.Rob Karner, Glen Lake Association (GLA) lake biologist, hopes it never does. Theā¦