Low: Mpca Co-Located Site Four Mile Bay Lake

On the LakeGrade scale Low: Mpca Co-Located Site Four Mile Bay Lake grades a B, with clarity at 12.1 ft and 22 µg/L of phosphorus placing it above the Minnesota median. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

Mesotrophic conditions dominate at Low: Mpca Co-Located Site Four Mile Bay Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. 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. Low: Mpca Co-Located Site Four Mile Bay Lake sits at rank 7 of 11 in Lake of the Woods County, in the lower half of the local distribution.

Zebra mussels have been documented at Low: Mpca Co-Located Site Four Mile Bay Lake, which alters the filter-feeding balance and can paradoxically increase water clarity while disrupting the food web. The state fisheries records do not list documented species for Low: Mpca Co-Located Site Four Mile Bay Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. Public access is available — the lake is on the Minnesota PCA public-access list. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.