Impact of aquatic invasive species on Minnesota lakes and rivers

Scouting on Spider Lake in Itasca County, Minn.
Itasca County Soil and Water Conservation District aquatic invasive species specialist Chris Evans and aquatic species control and monitoring technician Waylon Glienke look for invasive plants in Spider Lake, just north of Grand Rapids, Minn., on Monday, July 16, 2018.
Dan Gunderson | MPR News