Rock Lake vs Vern Wolf Lake
Water quality, depth, fish species, and recreation comparison.
Rock Lake has a higher water quality grade (A, Excellent) than Vern Wolf Lake (D, Poor). Both are in Kenosha County, Wisconsin.
Rock Lake and Vern Wolf 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: Rock Lake grades a A while Vern Wolf Lake grades a D. 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 — Rock 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?
Rock Lake
Good clarity, visible to about 10 ft.
Vern Wolf Lake
Murky, only visible to about 6.5 ft.
Side-by-Side Metrics
| Metric | Rock Lake | Vern Wolf Lake |
|---|---|---|
| Overall Grade | A (Excellent) | D (Poor) |
| Water Clarity | 10 ft | 6.5 ft |
| Phosphorus | 15.9 µg/L | No data |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | - | - |
| Surface Area | 44 acres | 158 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
Rock Lake wins on overall water quality with a Grade A versus Vern Wolf Lake's Grade D. Water clarity: 10 ft vs 6.5 ft. For fishing diversity, Rock Lake also leads with 0 species.