Lake Nancy

On the LakeGrade rubric, Lake Nancy pulls an A: clarity at 47.6 ft and 14 µg/L of phosphorus 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 32 puts Lake Nancy in the oligotrophic range, where biological productivity stays low and the water column remains clear. A maximum depth of 39 ft puts Lake Nancy in the middle of Wisconsin's depth distribution. Lake Nancy covers 757 acres alongside partial shoreline records — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Lake Nancy ranks 24 of 48 in Washburn County — solidly in the upper half of the local distribution.

Eurasian watermilfoil has been documented at Lake Nancy, requiring shoreline management to keep dense mats from crowding native vegetation. The fishery includes walleye alongside the lake's other 6 documented species — a notable draw for Wisconsin anglers. A documented public access point at Lake Nancy 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.