Faherty Lake

The LakeGrade rubric puts Faherty Lake at a C: clarity at 6.2 ft, 27 µg/L of phosphorus, and a TSI of 52 signal an intermediate trophic state. Secchi readings are the weakest of the scored parameters, suggesting suspended sediment or algal biomass dominates the optical signal.

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. Faherty Lake ranks 125 of 132 in Cass County — at the lower end of the locally monitored distribution.

No invasive species are currently listed at Faherty Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Faherty Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. No formal public access is documented at Faherty Lake — most use is by shoreline residents and their guests. The grade is supported by multiple sampling years from Minnesota PCA volunteers and partner agencies, giving the letter a reasonably stable foundation.