Clear Lake

Clear Lake comes in at a B on the grading rubric — a respectable showing for a Minnesota lake of its size and depth.

A TSI near 43 places Clear Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. Clear Lake reaches 24 ft at its deepest point — typical for Minnesota mid-sized lakes, with seasonal stratification but limited cold-water refuge. At 113 acres, Clear Lake fits the Minnesota median for monitored lakes, with 3.1 miles of shoreline. Among the 187 graded lakes in St. Louis County, Clear Lake sits at rank 48, above the county median.

No invasive species are currently listed at Clear Lake — the lake remains off the Minnesota infested-waters roster. The fishery includes walleye among the lake's 9 documented species — a notable draw for Minnesota anglers. The lake lacks a documented public access point, so visitor use is limited. The lake has a partial ice record — 11 observed ice-outs, centered near Apr 26. Monitoring depth is thin here: the LakeGrade rubric is applied to a small number of sample years, and the grade will be revised as more data accumulates.