Pewaukee Lake vs Pine Lake
Water quality, depth, fish species, and recreation comparison.
Pewaukee Lake and Pine Lake both received the same overall water quality grade of B (Good). Both are in Waukesha County, Wisconsin.
Both Pewaukee Lake and Pine 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. The grades are close: Pewaukee Lake (B) and Pine Lake (B) are within one letter of each other on the LakeGrade rubric. The per-parameter sub-grades below will show where the small differences actually live.
With grades 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.
Pewaukee Lake
Moderate clarity, visible to about 7.5 ft.
Pine Lake
Crystal clear, you can see 25 ft down.
Side-by-Side Metrics
| Metric | Pewaukee Lake | Pine Lake |
|---|---|---|
| Overall Grade | B (Good) | B (Good) |
| Water Clarity | 7.5 ft | 25 ft |
| Phosphorus | 19.9 µg/L | 12.2 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 45 ft | 85 ft |
| Surface Area | 2,437 acres | 711 acres |
| Public Access | Yes | Yes |
| Fish Species | 5 | 5 |
| Trophic State | mesotrophic | oligotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Both lakes earn the same Grade B. The tiebreakers come down to clarity (Pewaukee Lake: 7.5 ft, Pine Lake: 25 ft) and what you want from the lake. Pewaukee Lake matches its peer on species count.
Source: EPA National Aquatic Resource Surveys, 2026.