Gerund Lake

On the LakeGrade scale Gerund Lake grades a B, with clarity at 10.0 ft and phosphorus readings still being added placing it above the Minnesota median. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

Mesotrophic conditions dominate at Gerund Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. At 85 ft of maximum depth, Gerund Lake stratifies reliably through the summer — the hypolimnion stays cooler and clearer than the surface layer suggests. At 90 acres, Gerund Lake sits below the Minnesota median: a small water where shoreline activity has an outsized effect on water quality. Among the 142 graded lakes in Lake County, Gerund Lake sits at rank 66, above the county median.

Gerund Lake has no invasive species recorded in Minnesota state databases as of 2023, though prevention practices still apply at all access points. The state fisheries records do not list documented species for Gerund Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. No formal public access is documented at Gerund Lake — most use is by shoreline residents and their guests. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.