Franklin Lake vs Kentuck Lake
Water quality, depth, fish species, and recreation comparison.
Franklin Lake and Kentuck Lake both received the same overall water quality grade of B (Good). Both are in Wisconsin.
Franklin Lake and Kentuck Lake are both in Wisconsin — 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 — Franklin Lake (B) versus Kentuck Lake (B). 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.
Franklin Lake
Crystal clear, you can see 16 ft down.
Kentuck Lake
Moderate clarity, visible to about 9.5 ft.
Side-by-Side Metrics
| Metric | Franklin Lake | Kentuck Lake |
|---|---|---|
| Overall Grade | B (Good) | B (Good) |
| Water Clarity | 16 ft | 9.5 ft |
| Phosphorus | 11.3 µg/L | 24.3 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 46 ft | 40 ft |
| Surface Area | 839 acres | 1,001 acres |
| Public Access | Yes | Yes |
| Fish Species | 5 | 5 |
| Trophic State | oligotrophic | mesotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Both lakes earn the same Grade B. The tiebreakers come down to clarity (Franklin Lake: 16 ft, Kentuck Lake: 9.5 ft) and what you want from the lake. Franklin Lake matches its peer on species count.
Source: EPA National Aquatic Resource Surveys, 2026.