Hook Lake

On the LakeGrade scale Hook Lake grades a B, with clarity at 10.5 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.

The lake sits in the mesotrophic zone — the band where most well-managed Minnesota lakes fall. 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. Hook Lake sits at rank 50 of 97 in Otter Tail County, in the lower half of the local distribution.

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