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Farm Lake and Windy Lake read the same on nutrients and algae. Both are in Lake County, Minnesota.

Reviewed by LakeQuality Editorial Team · Updated

Farm Lake and Windy Lake are both in Minnesota — a same-state head-to-head where the comparison comes down to lake-specific differences in depth, watershed, and monitoring history rather than the broader state-level water-quality regime. These two sit close on the readings, Farm Lake versus Windy Lake. The deciding factors for a recreational visitor are likely physical (depth, access, fish species) rather than water-quality differences.

With readings this close, the choice between the two lakes turns on non-water-quality factors: depth, fish species, public access, distance from home. The per-lake pages below cover all of those.

Farm Lake

Lake County, Minnesota

Murky, only visible to about 5.5 ft.

Windy Lake

Lake County, Minnesota

Murky, only visible to about 5.5 ft.

Side-by-Side Metrics

MetricFarm LakeWindy Lake
Water Clarity5.5 ft5.5 ft
Phosphorus15 µg/L11 µg/L Better
Chlorophyll-a (Algae)4.7 µg/L2.1 µg/L Better
Maximum Depth56 ft Better39 ft
Surface Area1,292 acres456 acres
Public AccessYesYes
Fish Species12 Better7
Trophic Statemesotrophicmesotrophic

A green ✓ marks the better value for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better). Surface area and trophic state carry no tick — a bigger lake is not a better lake.

Verdict

Both lakes earn the same Grade A. The tiebreakers come down to clarity (Farm Lake: 5.5 ft, Windy Lake: 5.5 ft) and what you want from the lake. Farm Lake supports more documented fish species.

Source: EPA National Aquatic Resource Surveys, 2026.