Pat Lake

The LakeGrade rubric puts Pat Lake at a C: clarity at 6.5 ft, 39 µg/L of phosphorus, and a TSI of 54 signal an intermediate trophic state. 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 in the eutrophic range signals a lake doing what nutrient-loaded waters do — supporting an active algal community at the cost of clear water. 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. Pat Lake sits at rank 52 of 83 in Washington County, in the lower half of the local distribution.

No invasive species are currently listed at Pat Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Pat Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. The lake lacks a documented public access point, so visitor use is limited. The grade is supported by multiple sampling years from Minnesota PCA volunteers and partner agencies, giving the letter a reasonably stable foundation.