Gegoka Lake

The LakeGrade rubric puts Gegoka Lake at a C: clarity at 3.4 ft, 24 µg/L of phosphorus, and a TSI of 55 signal an intermediate trophic state. Secchi readings are the weakest of the three parameters, suggesting suspended sediment or algal biomass dominates the optical signal.

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. At only 10 ft deep, Gegoka Lake is shallow — wind keeps the water column mixed and sediment resuspension drives phosphorus levels harder to manage. The lake's 145 acres and 5.1 miles of shoreline put it in the mid-range bucket — large enough for varied use, small enough that watershed inputs reach the whole basin. Gegoka Lake ranks 129 of 159 in Lake County — at the lower end of the locally monitored distribution.

No invasive species are currently listed at Gegoka Lake — the lake remains off the Minnesota infested-waters roster. Walleye are documented at Gegoka Lake, one of 9 fish species on record for the lake. Public access is available — the lake is on the Minnesota PCA public-access list. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.