Franklin Lake vs Prairie Lake
Water quality, depth, fish species, and recreation comparison.
Franklin Lake reads lower on nutrients and algae than Prairie Lake. Both are in Otter Tail County, Minnesota.
Both Franklin Lake and Prairie 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. These two sit close on the readings, Franklin Lake versus Prairie 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.
Franklin Lake
Good clarity, visible to about 13.1 ft.
Prairie Lake
Moderate clarity, visible to about 8.9 ft.
Side-by-Side Metrics
| Metric | Franklin Lake | Prairie Lake |
|---|---|---|
| Water Clarity | 13.1 ft Better | 8.9 ft |
| Phosphorus | 17 µg/L Better | 18 µg/L |
| Chlorophyll-a (Algae) | 3.6 µg/L Better | 7.3 µg/L |
| Maximum Depth | 48 ft Better | 22 ft |
| Surface Area | 1,088 acres | 1,004 acres |
| Public Access | Yes | Yes |
| Fish Species | 18 Better | 15 |
| Trophic State | mesotrophic | mesotrophic |
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 Franklin Lake or Prairie Lake against a different lake.
Verdict
Franklin Lake reads lower on nutrients and algae than Prairie Lake. Water clarity: 13.1 ft vs 8.9 ft. For fishing diversity, Franklin Lake also leads with 18 species.
Source: EPA National Aquatic Resource Surveys, 2026.