Currant Lake

Currant Lake earns an F: 154 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.

Hypereutrophic conditions mean the lake is operating at the upper end of the productivity scale, with all the bloom risk that implies. At only 10 ft deep, Currant Lake is shallow — wind keeps the water column mixed and sediment resuspension drives phosphorus levels harder to manage. At 406 acres, Currant Lake fits the Minnesota median for monitored lakes, with 4.0 miles of shoreline. Within Murray County's 10 graded lakes, Currant Lake ranks 6 — below the local median, though not at the bottom.

Currant Lake has no invasive species recorded in Minnesota state databases as of 2025, though prevention practices still apply at all access points. The fishery includes walleye alongside the lake's other 9 documented species — a notable draw for Minnesota anglers. Public access is available — the lake is on the Minnesota PCA public-access list. Monitoring depth is thin here: the LakeGrade rubric is applied to a small number of sample years, and the grade will be revised as more data accumulates.