Augusta Lake

Augusta Lake earns an F: 178 µg/L of phosphorus and clarity readings still being added signal heavy nutrient loading from the surrounding watershed. With phosphorus and chlorophyll-a scored, the sub-grades cluster within a letter of each other, pointing to stable conditions rather than one specific stressor.

A TSI above 70 puts Augusta 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, Augusta Lake sits at rank 29, near the bottom of the county list.

Augusta Lake has no invasive species recorded in Minnesota state databases as of 2024, though prevention practices still apply at all access points. The state fisheries records do not list documented species for Augusta Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. No formal public access is documented at Augusta 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.