Radigan Flowage Lake

On the scoring rubric Radigan Flowage Lake grades a D: clarity at 6.6 ft and 95 µg/L of phosphorus keep it in the lower bracket for Douglas County. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

Eutrophic conditions are the baseline here: clarity drops noticeably in late summer, and dissolved oxygen near the bottom can become a concern. 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 the 40 graded lakes of Douglas County, Radigan Flowage Lake sits at rank 39, near the bottom of the county list.

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