French Lake

French Lake earns a C — middle-of-the-pack water quality, with one or two parameters dragging the average down from a stronger grade. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

At a TSI of 58, French Lake reads as eutrophic — nutrient-rich enough that summer algal growth and reduced clarity are expected, not unusual. French Lake is unusually deep for Minnesota at 50 ft, which buffers the lake against summer warming and helps the deep water stay oxygenated. French Lake covers 346 acres alongside 3.8 miles of shoreline — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Within Wright County's 64 graded lakes, French Lake ranks 36 — below the local median, though not at the bottom.

Eurasian watermilfoil is established at French Lake, which can dampen recreational access and pressure the native plant community. Walleye are documented at French Lake, one of 15 fish species on record for the lake. A documented public access point at French Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. The lake has a partial ice record — 24 observed ice-outs, centered near Apr 2. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.