Fawn Lake vs Mirror Lake
Water quality, depth, fish species, and recreation comparison.
Fawn Lake has a higher water quality grade (B, Good) than Mirror Lake (D, Poor). Both are in Wisconsin.
Both Fawn Lake and Mirror Lake sit in Wisconsin. A same-state comparison strips out the state-level water-quality regime as a variable: any grade differences here are about the lakes themselves, not the agencies grading them. Fawn Lake (B) is materially cleaner than Mirror Lake (D). A gap that wide is unlikely to close in a single year of remediation work; it reflects multi-decade differences in the lakes themselves.
For a recreational visitor, the wider grade gap is decisive — Fawn 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?
Fawn Lake
Moderate clarity, visible to about 9.5 ft.
Mirror Lake
Murky, only visible to about 4.6 ft.
Side-by-Side Metrics
| Metric | Fawn Lake | Mirror Lake |
|---|---|---|
| Overall Grade | B (Good) | D (Poor) |
| Water Clarity | 9.5 ft | 4.6 ft |
| Phosphorus | 20.4 µg/L | 65.4 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | - | - |
| Surface Area | 19 acres | 137 acres |
| Public Access | Unknown | Unknown |
| Fish Species | 0 | 0 |
| Trophic State | mesotrophic | eutrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Fawn Lake wins on overall water quality with a Grade B versus Mirror Lake's Grade D. Water clarity: 9.5 ft vs 4.6 ft. For fishing diversity, Fawn Lake also leads with 0 species.