Chippewa Flowage -Winter Dam Lake

On the LakeGrade scale Chippewa Flowage -Winter Dam Lake grades a B, with clarity at 14.3 ft and 49 µg/L of phosphorus placing it above the Wisconsin median. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

A TSI near 49 places Chippewa Flowage -Winter Dam Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. The lake's 92 ft maximum depth is in the upper tier for Wisconsin — deep enough for cold-water fish to find refuge in summer. Chippewa Flowage -Winter Dam Lake covers 14,593 acres alongside partial shoreline records, large enough that conditions can vary meaningfully between bays. Chippewa Flowage -Winter Dam Lake ranks 46 of 52 in Sawyer County — at the lower end of the locally monitored distribution.

Eurasian watermilfoil is established at Chippewa Flowage -Winter Dam Lake, which can dampen recreational access and pressure the native plant community. The fishery includes walleye alongside the lake's other 8 documented species — a notable draw for Wisconsin anglers. A documented public access point at Chippewa Flowage -Winter Dam Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. Multiple sampling years from the Wisconsin DNR Citizen Lake Monitoring Network back the grade, so the letter should hold steady absent a major watershed shift.