69-0732-00 Lake

The LakeGrade rubric puts 69-0732-00 Lake at a C: clarity at 3.6 ft, 29 µg/L of phosphorus, and a TSI of 56 signal an intermediate trophic state. Secchi readings are the weakest of the three parameters, suggesting suspended sediment or algal biomass dominates the optical signal.

A TSI in the eutrophic range signals a lake doing what nutrient-loaded waters do — supporting an active algal community at the cost of clear water. 69-0732-00 Lake is a shallow lake at 14 ft maximum depth, which means it warms quickly, mixes constantly, and amplifies nutrient inputs. At 96 acres, 69-0732-00 Lake sits below the Minnesota median: a small water where shoreline activity has an outsized effect on water quality. Within St. Louis County's 187 graded lakes, 69-0732-00 Lake ranks 128 — below the local median, though not at the bottom.

No invasive species are currently listed at 69-0732-00 Lake — the lake remains off the Minnesota infested-waters roster. The fishery includes walleye alongside the lake's other 7 documented species — a notable draw for Minnesota anglers. The lake lacks a documented public access point, so visitor use is limited. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.