Dickman Lake

Dickman Lake earns an F: 74 µg/L of phosphorus and clarity at 1.6 ft signal heavy nutrient loading from the surrounding watershed. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

Eutrophic conditions are the baseline here: clarity drops noticeably in late summer, and dissolved oxygen near the bottom can become a concern. 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 Dakota County's 48 graded lakes, Dickman Lake ranks 36 — below the local median, though not at the bottom.

An invasive species record — Chinook Salmon — has been logged at Dickman Lake; Minnesota PCA maintains the official infested-waters list. The state fisheries records do not list documented species for Dickman Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. The lake lacks a documented public access point, so visitor use is limited. The grade is supported by multiple sampling years from Minnesota PCA volunteers and partner agencies, giving the letter a reasonably stable foundation.