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Scotch Lake reads lower on nutrients and algae than German Lake. Both are in Le Sueur County, Minnesota.

Reviewed by LakeQuality Editorial Team · Updated

German Lake and Scotch 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. The readings are close: German Lake and Scotch Lake sit within a narrow band of each other on phosphorus, chlorophyll-a and clarity. The per-parameter table below shows where the small differences actually live.

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.

German Lake

Le Sueur County, Minnesota

Murky, only visible to about 3.5 ft.

Scotch Lake

Le Sueur County, Minnesota

Very murky, less than 2.6 ft of visibility.

Side-by-Side Metrics

MetricGerman LakeScotch Lake
Water Clarity3.5 ft Better2.6 ft
Phosphorus74 µg/L Better569 µg/L
Chlorophyll-a (Algae)61.9 µg/L9.7 µg/L Better
Maximum Depth51 ft Better11 ft
Surface Area889 acres598 acres
Public AccessYesYes
Fish Species19 Better5
Trophic Stateeutrophichypereutrophic

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

Scotch Lake reads lower on nutrients and algae than German Lake. Water clarity: 2.6 ft vs 3.5 ft. For more fish-species variety, German Lake edges ahead with 19 documented species.

Source: EPA National Aquatic Resource Surveys, 2026.