Holden City Lake Nr. Dam vs Rock Lake Village Lake
Water quality, depth, fish species, and recreation comparison.
Rock Lake Village Lake has a higher water quality grade (B, Good) than Holden City Lake Nr. Dam (F, Very Poor). Both are in Johnson County, Wisconsin.
Holden City Lake Nr. Dam and Rock Lake Village Lake are both in Missouri — 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. Rock Lake Village Lake (B) is materially cleaner than Holden City Lake Nr. Dam (F). 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 — Rock Lake Village 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?
Holden City Lake Nr. Dam
Very murky, less than 2 ft of visibility.
Rock Lake Village Lake
Murky, only visible to about 4.3 ft.
Side-by-Side Metrics
| Metric | Holden City Lake Nr. Dam | Rock Lake Village Lake |
|---|---|---|
| Overall Grade | F (Very Poor) | B (Good) |
| Water Clarity | 2 ft | 4.3 ft |
| Phosphorus | 96 µg/L | 16 µg/L |
| Chlorophyll-a (Algae) | 39.2 µg/L | 4.8 µg/L |
| Maximum Depth | - | - |
| Surface Area | 380 acres | 27 acres |
| Public Access | Unknown | Unknown |
| Fish Species | 0 | 0 |
| Trophic State | eutrophic | mesotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Rock Lake Village Lake wins on overall water quality with a Grade B versus Holden City Lake Nr. Dam's Grade F. Water clarity: 4.3 ft vs 2 ft. For fishing diversity, Rock Lake Village Lake also leads with 0 species.