Muellers Lake

On the LakeGrade rubric, Muellers Lake pulls an A: clarity at 36.1 ft and phosphorus readings still being added put it in the top bracket for Wisconsin. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

A TSI value of 25 puts Muellers Lake in the oligotrophic range, where biological productivity stays low and the water column remains clear. Muellers Lake reaches 34 ft at its deepest point — typical for Wisconsin mid-sized lakes, with seasonal stratification but limited cold-water refuge. The lake is compact at 88 acres, with partial shoreline records and little volume to buffer nutrient inputs. Within Langlade County's 32 graded lakes, Muellers Lake ranks 19 — below the local median, though not at the bottom.

An invasive species record — Banded Mystery Snail — has been logged at Muellers Lake; Wisconsin DNR maintains the official infested-waters list. The fishery includes walleye alongside the lake's other 4 documented species — a notable draw for Wisconsin anglers. 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.