School Section Lake

School Section Lake sits at the top of the Wisconsin DNR grading rubric with an A, a mark reached by the cleanest lakes in Wisconsin. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

Mesotrophic conditions dominate at School Section Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. School Section Lake reaches 38 ft at its deepest point — typical for Wisconsin mid-sized lakes, with seasonal stratification but limited cold-water refuge. The lake is compact at 39 acres, with partial shoreline records and little volume to buffer nutrient inputs. School Section Lake ranks 25 of 27 in Waupaca County — at the lower end of the locally monitored distribution.

School Section Lake carries an invasive watermilfoil record — boat-launch decontamination and shoreline care matter more here than at uninfested lakes. The fishery is bass-led, with 3 documented species across the lake's records. 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.