Eddy by Pony Creek Lake

Eddy by Pony Creek Lake earns an F: 1370 µg/L of phosphorus and clarity at 0.5 ft signal heavy nutrient loading from the surrounding watershed. The two scored sub-grades — clarity and phosphorus — track close together, so neither one is dragging the average down.

A TSI above 70 puts Eddy by Pony Creek Lake in hypereutrophic territory: visible blooms are common, and clarity rarely climbs even in early summer. 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 26, 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. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.