White Oak Lake

White Oak Lake earns a D — measurements through 2024 show persistent nutrient pressure that limits clarity through the summer. The lake's weakest score is on Secchi depth — the water looks more turbid than its phosphorus number alone would predict.

A TSI in the eutrophic range signals a lake doing what nutrient-loaded waters do — supporting an active algal community at the cost of clear water. 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. White Oak Lake ranks 137 of 141 in Itasca County — at the lower end of the locally monitored distribution.

No invasive species are currently listed at White Oak Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for White Oak Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. A documented public access point at White Oak Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.