Lake Poygan vs White Lake
Water quality, depth, fish species, and recreation comparison.
White Lake has a higher water quality grade (C, Fair) than Lake Poygan (F, Very Poor). Both are in Wisconsin.
Lake Poygan and White 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. The grades are meaningfully apart: White Lake grades a C while Lake Poygan grades a F. That two-letter spread reflects real underlying differences — different watershed inputs, different depth profiles, or different monitoring rigor.
For a recreational visitor, the wider grade gap is decisive — White Lake is the better water-quality choice. For a researcher, the gap is the interesting part: what is different about the two watersheds, and which of those differences is mutable?
Lake Poygan
Very murky, less than 2.5 ft of visibility.
White Lake
Murky, only visible to about 5.6 ft.
Side-by-Side Metrics
| Metric | Lake Poygan | White Lake |
|---|---|---|
| Overall Grade | F (Very Poor) | C (Fair) |
| Water Clarity | 2.5 ft | 5.6 ft |
| Phosphorus | No data | 22 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 11 ft | 10 ft |
| Surface Area | 14.0K acres | 1.1K acres |
| Public Access | Unknown | Unknown |
| Fish Species | 0 | 0 |
| Trophic State | eutrophic | eutrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
White Lake wins on overall water quality with a Grade C versus Lake Poygan's Grade F. Water clarity: 5.6 ft vs 2.5 ft. For fishing diversity, White Lake also leads with 0 species.