OTTER TAIL COUNTY, Minn. —The Minnesota Department of Natural Resources on Monday, Sept. 9, confirmed a zebra mussel in East Battle Lake in Otter Tail County.

A lake property owner removing equipment from the lake for the season contacted the DNR after finding an adult zebra mussel attached to a dock post.

As with any such confirmation of a specimen, East Battle Lake is listed for zebra mussels, and invasive species signage has been posted at accesses. The DNR will continue to monitor East Battle Lake for zebra mussels and other aquatic invasive species.

East Battle Lake is connected to, but upstream from, West Battle Lake, where zebra mussels were confirmed in August 2016. Several other lakes connected to West Battle Lake were added to the list of Minnesota waterbodies with zebra mussels in September 2018.

Whether or not a lake is listed as infested, Minnesota law requires boaters and anglers to:

WDAY logo
listen live
watch live
  • Clean watercraft and trailers of aquatic plants and prohibited invasive species,
  • Drain all water by removing drain plugs and keeping them out during transport, and
  • Dispose of unwanted bait in the trash.

Zebra mussels can compete with native species for food and habitat, cut the feet of swimmers, reduce the performance of boat motors, and cause expensive damage to water intake pipes.

More information is available at