Fowler Lake vs Oconomowoc Lake
Water quality, depth, fish species, and recreation comparison.
Fowler Lake and Oconomowoc Lake both received the same overall water quality grade of A (Excellent). Both are in Waukesha County, Wisconsin.
Fowler Lake and Oconomowoc 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 close: Fowler Lake (A) and Oconomowoc Lake (A) 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.
Fowler Lake
Good clarity, visible to about 14.5 ft.
Oconomowoc Lake
Good clarity, visible to about 13 ft.
Side-by-Side Metrics
| Metric | Fowler Lake | Oconomowoc Lake |
|---|---|---|
| Overall Grade | A (Excellent) | A (Excellent) |
| Water Clarity | 14.5 ft | 13 ft |
| Phosphorus | 15.6 µg/L | 11.7 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | - | - |
| Surface Area | 78 acres | 721 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
Both lakes earn the same Grade A. The tiebreakers come down to clarity (Fowler Lake: 14.5 ft, Oconomowoc Lake: 13 ft) and what you want from the lake. Fowler Lake matches its peer on species count.