Eddy by Pony Creek Lake

Eddy by Pony Creek Lake sits at a C on the grading scale — not impaired, not pristine, with summer measurements that vary year to year. Clarity is the limiting factor — phosphorus is reasonable but suspended particles or algal cells keep water transparency below Wisconsin norms.

A TSI value of 39 puts Eddy by Pony Creek Lake in the oligotrophic range, where biological productivity stays low and the water column remains clear. Eddy by Pony Creek Lake is a shallow lake at 11 ft maximum depth, which means it warms quickly, mixes constantly, and amplifies nutrient inputs. Eddy by Pony Creek Lake is small — 28 acres alongside partial shoreline records — which makes it sensitive to even modest changes in watershed runoff or recreational pressure. Within the 27 graded lakes of Shawano County, Eddy by Pony Creek Lake sits at rank 24, near the bottom of the county list.

Eurasian watermilfoil has been documented at Eddy by Pony Creek Lake, requiring shoreline management to keep dense mats from crowding native vegetation. Bass fishing is part of the appeal: the species list runs to 3, anchored by largemouth and/or smallmouth bass. Public access is available — the lake is on the Wisconsin DNR public-access list. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.