Poplar Lake

On the LakeGrade scale Poplar Lake grades a B, with clarity at 12.7 ft and phosphorus readings still being added placing it above the Wisconsin median. 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 sits in the mesotrophic zone — the band where most well-managed Wisconsin lakes fall. The lake's maximum depth is not yet documented in state morphometric records — context for its physical structure remains limited. The lake's surface area is not consistently recorded across state datasets — physical context remains partial. Poplar Lake ranks 18 of 74 in Polk County, putting it in the upper tier of locally monitored lakes.

No invasive species are currently listed at Poplar Lake — the lake remains off the Wisconsin infested-waters roster. The state fisheries records do not list documented species for Poplar Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. 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.