Boulder Lake vs Lac Vieux Desert Lake
Water quality, depth, fish species, and recreation comparison.
Boulder Lake reads lower on nutrients and algae than Lac Vieux Desert Lake. Both are in Vilas County, Wisconsin.
Both Boulder Lake and Lac Vieux Desert Lake sit in Wisconsin. A same-state comparison strips out the state-level water-quality regime as a variable: any differences in the readings here are about the lakes themselves, not the agencies sampling them. These two sit close on the readings, Boulder Lake versus Lac Vieux Desert Lake. The deciding factors for a recreational visitor are likely physical (depth, access, fish species) rather than water-quality differences.
With readings this close, the choice between the two lakes turns on non-water-quality factors: depth, fish species, public access, distance from home. The per-lake pages below cover all of those.
Boulder Lake
Murky, only visible to about 5.6 ft.
Lac Vieux Desert Lake
Murky, only visible to about 5.7 ft.
Side-by-Side Metrics
| Metric | Boulder Lake | Lac Vieux Desert Lake |
|---|---|---|
| Water Clarity | 5.6 ft | 5.7 ft Better |
| Phosphorus | 21.6 µg/L Better | 28.2 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 23 ft | 38 ft Better |
| Surface Area | 516 acres | 4,017 acres |
| Public Access | Yes | Yes |
| Fish Species | 6 | 6 |
| Trophic State | eutrophic | eutrophic |
A green ✓ marks the better value for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better). Surface area and trophic state carry no tick — a bigger lake is not a better lake.
Swap a lake
Compare Boulder Lake or Lac Vieux Desert Lake against a different lake.
Verdict
Boulder Lake reads lower on nutrients and algae than Lac Vieux Desert Lake. Water clarity: 5.6 ft vs 5.7 ft. For fishing diversity, Boulder Lake also leads with 6 species.
Source: EPA National Aquatic Resource Surveys, 2026.