Mt Maud Lake Mid Basin

Mt Maud Lake Mid Basin grades an F: water clarity, phosphorus, and chlorophyll-a all rate poorly, placing it among the most stressed lakes monitored in Minnesota. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

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. The lake's maximum depth is not yet documented in state morphometric records — context for its physical structure remains limited. The lake's surface area is not consistently recorded across state datasets — physical context remains partial. Mt Maud Lake Mid Basin ranks 121 of 137 in Cook County — at the lower end of the locally monitored distribution.

No invasive species are currently listed at Mt Maud Lake Mid Basin — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Mt Maud Lake Mid Basin, which usually reflects a lack of formal fisheries survey work rather than an empty lake. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.