Reservoir Pond

Reservoir Pond sits at the top of the Wisconsin DNR grading rubric with an A, a mark reached by the cleanest lakes in Wisconsin. 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.

The lake's low TSI puts it in oligotrophic territory — the cleanest of the four trophic classes, but also the most vulnerable to nutrient-driven shifts. A maximum depth of 16 ft puts Reservoir Pond in the middle of Wisconsin's depth distribution. The lake's 413 acres and partial shoreline records put it in the mid-range bucket — large enough for varied use, small enough that watershed inputs reach the whole basin. Reservoir Pond sits at rank 40 of 66 in Oconto County, in the lower half of the local distribution.

Eurasian watermilfoil is established at Reservoir Pond, which can dampen recreational access and pressure the native plant community. The fishery is bass-led, with 3 documented species across the lake's records. A documented public access point at Reservoir Pond makes the lake usable for shore fishing, paddle craft, and trailered boats. Monitoring depth is thin here: the LakeGrade rubric is applied to a small number of sample years, and the grade will be revised as more data accumulates.