Johnson Lake

Johnson Lake earns a C — middle-of-the-pack water quality, with one or two parameters dragging the average down from a stronger grade.

A TSI near 45 places Johnson Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. 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. Johnson Lake ranks 70 of 93 in Becker County — at the lower end of the locally monitored distribution.

Johnson Lake has no invasive species recorded in Minnesota state databases as of 2022, though prevention practices still apply at all access points. The state fisheries records do not list documented species for Johnson Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. A documented public access point at Johnson 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.