Gull Lake vs Stone Lake
Water quality, depth, fish species, and recreation comparison.
Stone Lake has a higher water quality grade (A, Excellent) than Gull Lake (C, Fair). Both are in Washburn County, Wisconsin.
Both Gull Lake and Stone 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. Stone Lake (A) is materially cleaner than Gull Lake (C). 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 — Stone 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?
Gull Lake
Moderate clarity, visible to about 8.5 ft.
Stone Lake
Crystal clear, you can see 23 ft down.
Side-by-Side Metrics
| Metric | Gull Lake | Stone Lake |
|---|---|---|
| Overall Grade | C (Fair) | A (Excellent) |
| Water Clarity | 8.5 ft | 23 ft |
| Phosphorus | No data | 10.8 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 19 ft | 49 ft |
| Surface Area | 518 acres | 490 acres |
| Public Access | Unknown | Unknown |
| Fish Species | 0 | 0 |
| Trophic State | mesotrophic | oligotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Stone Lake wins on overall water quality with a Grade A versus Gull Lake's Grade C. Water clarity: 23 ft vs 8.5 ft. For fishing diversity, Stone Lake also leads with 0 species.