Farm Lake vs Sand Lake
Water quality, depth, fish species, and recreation comparison.
Farm Lake reads lower on nutrients and algae than Sand Lake. Both are in Lake County, Minnesota.
Both Farm Lake and Sand Lake sit in Minnesota. A same-state comparison strips out the state-level water-quality regime as a variable: any differences in the readings here are about the lakes themselves, not the agencies sampling them. The readings are meaningfully apart: Farm Lake carries clearly lower phosphorus and chlorophyll-a readings than Sand Lake. A spread that wide reflects real underlying differences, in watershed inputs, depth profiles, or monitoring rigor.
For a recreational visitor, the wider gap in the readings is decisive: Farm Lake has the lower nutrient and algae numbers. For a researcher, the gap is the interesting part: what is different about the two watersheds, and which of those differences is mutable?
Farm Lake
Murky, only visible to about 5.5 ft.
Sand Lake
Murky, only visible to about 4.1 ft.
Side-by-Side Metrics
| Metric | Farm Lake | Sand Lake |
|---|---|---|
| Water Clarity | 5.5 ft Better | 4.1 ft |
| Phosphorus | 15 µg/L Better | 22 µg/L |
| Chlorophyll-a (Algae) | 4.7 µg/L Better | 8 µg/L |
| Maximum Depth | 56 ft Better | 11 ft |
| Surface Area | 1,292 acres | 486 acres |
| Public Access | Yes | Yes |
| Fish Species | 12 Better | 9 |
| Trophic State | mesotrophic | eutrophic |
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.
Swap a lake
Compare Farm Lake or Sand Lake against a different lake.
Verdict
Farm Lake reads lower on nutrients and algae than Sand Lake. Water clarity: 5.5 ft vs 4.1 ft. For fishing diversity, Farm Lake also leads with 12 species.
Source: EPA National Aquatic Resource Surveys, 2026.