Quigley Lake

On the LakeGrade rubric Quigley Lake fails the cutoffs — a TSI of 71 and persistent algal pressure put it in the bottom tier. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

A TSI above 70 puts Quigley Lake in hypereutrophic territory: visible blooms are common, and clarity rarely climbs even in early summer. 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. Within the 36 graded lakes of Dakota County, Quigley Lake sits at rank 34, near the bottom of the county list.

No invasive species are currently listed at Quigley Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Quigley Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. No formal public access is documented at Quigley Lake — most use is by shoreline residents and their guests. 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.