Lake Eau Galle

On the scoring rubric Lake Eau Galle grades a D: clarity at 3.0 ft and 69 µg/L of phosphorus keep it in the lower bracket for Dunn County. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

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 350 acres and partial shoreline records put it in the mid-range bucket — large enough for varied use, small enough that watershed inputs reach the whole basin. Lake Eau Galle ranks 3 of 3 in Dunn County — at the lower end of the locally monitored distribution.

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