North Lake -Spread Eagle Chain

On the LakeGrade rubric, North Lake -Spread Eagle Chain pulls an A: clarity at 48.8 ft and phosphorus readings still being added put it in the top bracket for Wisconsin. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

The lake's low TSI puts it in oligotrophic territory — the cleanest of the four trophic classes, but also the most vulnerable to nutrient-driven shifts. 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. Among the 39 graded lakes in Florence County, North Lake -Spread Eagle Chain sits at rank 13, above the county median.

No invasive species are currently listed at North Lake -Spread Eagle Chain — the lake remains off the Wisconsin infested-waters roster. The state fisheries records do not list documented species for North Lake -Spread Eagle Chain, 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.