Lake Poygan vs Little Lake Butte des Morts
Water quality, depth, fish species, and recreation comparison.
Lake Poygan has a higher water quality grade (C, Fair) than Little Lake Butte des Morts (D, Poor). Both are in Winnebago County, Wisconsin.
C
Lake Poygan
Winnebago County, Wisconsin
Moderate clarity, visible to about 8.2 ft.
D
Little Lake Butte des Morts
Winnebago County, Wisconsin
Murky, only visible to about 6.6 ft.
Side-by-Side Metrics
| Metric | Lake Poygan | Little Lake Butte des Morts |
|---|---|---|
| Overall Grade | C (Fair) | D (Poor) |
| Water Clarity | 8.2 ft | 6.6 ft |
| Phosphorus | No data | 133.5 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 11 ft | 18 ft |
| Surface Area | 14.0K acres | 1.2K acres |
| Public Access | Yes | Yes |
| Fish Species | 8 | 7 |
| Trophic State | mesotrophic | eutrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Lake Poygan wins on overall water quality with a Grade C versus Little Lake Butte des Morts's Grade D. Water clarity: 8.2 ft vs 6.6 ft. For fishing diversity, Lake Poygan also leads with 8 species.