Deadlines are approaching in Minnesota and Wisconsin for anglers to get ice fishing shelters off the ice.

For Minnesota waters south of highways 2 and 200, the deadline is March 7. For lakes and rivers north of highways 2 and 200, the deadline is March 21.

Portable or wheeled fish houses can still be used during the day after those dates, but all shelters must be removed overnight if not being used and can’t be left unoccupied.

The Minnesota Department of Natural Resources reminds anglers that it is illegal to leave all or parts of a fish house, or any refuse, behind on the ice. Conservation officers often take GPS readings and record owner data and can issue citations to anyone who leaves any material on the ice after the deadline.

Any fish houses left after the deadline can also be destroyed, or confiscated, and the DNR can hire contractors to remove the house and then bill the owner.

Conservation offices also are reminding anglers to check their fishing shelters well before the deadline this year because deep snow and slush on top of the ice may make removal extremely difficult.

Other deadlines for fish house removal:

Wisconsin: For most of northern Wisconsin north of state Highway 64, fishing shelters must be removed by March 13. That includes Lake Superior.