Spring Lake

On the LakeGrade rubric Spring Lake fails the cutoffs — a TSI of 93 and persistent algal pressure put it in the bottom tier. clarity and phosphorus rate similarly, so there is no obvious single lever to pull on watershed management.

The hypereutrophic status — TSI 93 — reflects sustained heavy nutrient loading from the surrounding watershed and frequent algal pressure. 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 95 graded lakes of Hennepin County, Spring Lake sits at rank 81, near the bottom of the county list.

No invasive species are currently listed at Spring Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Spring Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. No formal public access is documented at Spring Lake — most use is by shoreline residents and their guests. Ice-out has been recorded 6 times at Spring Lake, with a median around Mar 30. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.