Indian Lake

Indian Lake earns an F: 295 µg/L of phosphorus and clarity at 0.7 ft signal heavy nutrient loading from the surrounding watershed. With clarity and phosphorus scored, the sub-grades cluster within a letter of each other, pointing to stable conditions rather than one specific stressor.

The hypereutrophic status — TSI 84 — reflects sustained heavy nutrient loading from the surrounding watershed and frequent algal pressure. 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. Within Dane County's 21 graded lakes, Indian Lake ranks 11 — below the local median, though not at the bottom.

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