Lake Nebagamon

Lake Nebagamon earns an A — water clarity, phosphorus, and chlorophyll-a all rate among the best monitored waters in Douglas County. Sub-grades cluster within a single letter of each other, which usually means the lake is in stable trophic balance rather than fighting one specific stressor.

A TSI value of 39 puts Lake Nebagamon in the oligotrophic range, where biological productivity stays low and the water column remains clear. The lake's 56 ft maximum depth is in the upper tier for Wisconsin — deep enough for cold-water fish to find refuge in summer. Lake Nebagamon covers 986 acres alongside partial shoreline records — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Lake Nebagamon ranks 5 of 40 in Douglas County, putting it in the upper tier of locally monitored lakes.

Lake Nebagamon has at least one documented invasive species (Chinese Mystery Snail), so boaters and anglers should observe clean-drain-dry steps when leaving the lake. The fishery includes walleye alongside the lake's other 5 documented species — a notable draw for Wisconsin anglers. A documented public access point at Lake Nebagamon 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.