Cut Foot Sioux Lake

Cut Foot Sioux Lake earns a C — middle-of-the-pack water quality, with one or two parameters dragging the average down from a stronger grade. Sub-grades cluster within a single letter of each other, which usually means the lake is in stable trophic balance rather than fighting one specific stressor.

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. Cut Foot Sioux Lake sits at rank 102 of 141 in Itasca County, in the lower half of the local distribution.

Zebra mussels have been documented at Cut Foot Sioux 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 Cut Foot Sioux Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. A documented public access point at Cut Foot Sioux Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. The grade is supported by multiple sampling years from Minnesota PCA volunteers and partner agencies, giving the letter a reasonably stable foundation.