The Minnesota Department of Natural Resources defines a lake as a body of water with an area of at least 10 acres.

Usually, Boulay says, ice-out occurs when a lake is roughly 90% ice-free, and when a boat may be successfully launched.

DULUTH — Deadlines are approaching in Minnesota and Wisconsin for anglers to get ice fishing shelters off the ice. For Minnesota lakes and rivers south of highways 2 and 200, the deadline is ...