Trader Lake

The LakeGrade rubric puts Trader Lake at a C: clarity at 8.5 ft, phosphorus readings still being added, and a TSI of 46 signal an intermediate trophic state. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

Mesotrophic conditions dominate at Trader Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. At only 10 ft deep, Trader Lake is shallow — wind keeps the water column mixed and sediment resuspension drives phosphorus levels harder to manage. At 54 acres, Trader Lake sits below the Minnesota median: a small water where shoreline activity has an outsized effect on water quality. Within the 142 graded lakes of Lake County, Trader Lake sits at rank 112, near the bottom of the county list.

No invasive species are currently listed at Trader Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Trader Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. 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.