Agency Bay Lake

On the LakeGrade rubric, Agency Bay Lake pulls an A: clarity at 15.2 ft and phosphorus readings still being added put it in the top bracket for Minnesota. With clarity and chlorophyll-a scored, the sub-grades cluster within a letter of each other, pointing to stable conditions rather than one specific stressor.

Trophically, Agency Bay Lake reads as oligotrophic — nutrient-poor, clear, and ecologically more sensitive to disturbance than richer lakes. 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. Among the 132 graded lakes in Cass County, Agency Bay Lake sits at rank 40, above the county median.

Agency Bay Lake is on the Minnesota infested-waters list for zebra mussels — boaters should follow clean-drain-dry protocols when moving gear to or from the lake. The state fisheries records do not list documented species for Agency Bay Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. A documented public access point at Agency Bay Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. The lake has a long ice-out record — 71 observations on file, with a median ice-out around Apr 28. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.