Melon Lake

The LakeGrade rubric puts Melon Lake at a C: clarity at 8.5 ft, phosphorus readings still being added, and a TSI of 46 signal an intermediate trophic state. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

Mesotrophic conditions dominate at Melon Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. 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 Lake County's 142 graded lakes, Melon Lake ranks 97 — below the local median, though not at the bottom.

No invasive species are currently listed at Melon Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Melon Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. No formal public access is documented at Melon 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.