Gabbro Lake vs South Farm Lake
Water quality, depth, fish species, and recreation comparison.
Gabbro Lake and South Farm Lake both received the same overall water quality grade of D (Poor). Both are in Lake County, Minnesota.
Gabbro Lake and South Farm 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 are within a letter of each other on the rubric — Gabbro Lake (D) versus South Farm Lake (D). The deciding factors for a recreational visitor are likely physical (depth, access, fish species) rather than water-quality differences.
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.
Gabbro Lake
Murky, only visible to about 4.3 ft.
South Farm Lake
Murky, only visible to about 5 ft.
Side-by-Side Metrics
| Metric | Gabbro Lake | South Farm Lake |
|---|---|---|
| Overall Grade | D (Poor) | D (Poor) |
| Water Clarity | 4.3 ft | 5 ft |
| Phosphorus | No data | No data |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 50 ft | 31 ft |
| Surface Area | 976.77 acres | 563.98 acres |
| Public Access | No | No |
| Fish Species | 1 | 1 |
| Trophic State | eutrophic | eutrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Both lakes earn the same Grade D. The tiebreakers come down to clarity (Gabbro Lake: 4.3 ft, South Farm Lake: 5 ft) and what you want from the lake. Gabbro Lake matches its peer on species count.