German Lake vs Scotch Lake
Water quality, depth, fish species, and recreation comparison.
Scotch Lake has a higher water quality grade (D, Poor) than German Lake (F, Very Poor). Both are in Le Sueur County, Minnesota.
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 grades are close: German Lake (F) and Scotch Lake (D) are within one letter of each other on the LakeGrade rubric. The per-parameter sub-grades below will show where the small differences actually live.
With grades 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
Murky, only visible to about 3.5 ft.
Scotch Lake
Very murky, less than 2.6 ft of visibility.
Side-by-Side Metrics
| Metric | German Lake | Scotch Lake |
|---|---|---|
| Overall Grade | F (Very Poor) | D (Poor) |
| Water Clarity | 3.5 ft | 2.6 ft |
| Phosphorus | 74 µg/L | 569 µg/L |
| Chlorophyll-a (Algae) | 61.9 µg/L | 9.7 µg/L |
| Maximum Depth | 51 ft | 11 ft |
| Surface Area | 889 acres | 598 acres |
| Public Access | Yes | Yes |
| Fish Species | 19 | 5 |
| Trophic State | eutrophic | hypereutrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Scotch Lake wins on overall water quality with a Grade D versus German Lake's Grade F. 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.