Peppermill Lake

Peppermill Lake comes in at a B on the grading rubric — a respectable showing for a Wisconsin lake of its size and depth. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

Mesotrophic conditions dominate at Peppermill Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. At only 13 ft deep, Peppermill Lake is shallow — wind keeps the water column mixed and sediment resuspension drives phosphorus levels harder to manage. The lake is compact at 53 acres, with partial shoreline records and little volume to buffer nutrient inputs. Peppermill Lake sits at rank 11 of 19 in Adams County, in the lower half of the local distribution.

Eurasian watermilfoil has been documented at Peppermill Lake, requiring shoreline management to keep dense mats from crowding native vegetation. Bass fishing is part of the appeal: the species list runs to 4, anchored by largemouth and/or smallmouth bass. A documented public access point at Peppermill Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.