Fish Lake

Fish Lake earns a D — measurements through 2021 show persistent nutrient pressure that limits clarity through the summer.

Eutrophic conditions are the baseline here: clarity drops noticeably in late summer, and dissolved oxygen near the bottom can become a concern. A maximum depth of 18 ft puts Fish Lake in the middle of Minnesota's depth distribution. At 185 acres, Fish Lake fits the Minnesota median for monitored lakes, with 6.0 miles of shoreline. Fish Lake sits at rank 14 of 19 in Pine County, in the lower half of the local distribution.

Fish Lake has no invasive species recorded in Minnesota state databases as of 2021, though prevention practices still apply at all access points. The state fisheries records do not list documented species for Fish Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. No formal public access is documented at Fish Lake — most use is by shoreline residents and their guests. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.