Oconomowoc Lake 2 vs Oconomowoc Lake No. 1
Water quality, depth, fish species, and recreation comparison.
Oconomowoc Lake 2 and Oconomowoc Lake No. 1 both received the same overall water quality grade of A (Excellent). Both are in Waukesha County, Wisconsin.
Oconomowoc Lake 2 and Oconomowoc Lake No. 1 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. These two are within a letter of each other on the rubric — Oconomowoc Lake 2 (A) versus Oconomowoc Lake No. 1 (A). The deciding factors for a recreational visitor are likely physical (depth, access, fish species) rather than water-quality differences.
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.
Oconomowoc Lake 2
Good clarity, visible to about 14.2 ft.
Oconomowoc Lake No. 1
Good clarity, visible to about 13.8 ft.
Side-by-Side Metrics
| Metric | Oconomowoc Lake 2 | Oconomowoc Lake No. 1 |
|---|---|---|
| Overall Grade | A (Excellent) | A (Excellent) |
| Water Clarity | 14.2 ft | 13.8 ft |
| Phosphorus | 15.5 µg/L | 16 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 60 ft | 60 ft |
| Surface Area | 818 acres | 818 acres |
| Public Access | Unknown | Unknown |
| Fish Species | 0 | 0 |
| Trophic State | mesotrophic | mesotrophic |
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 (Oconomowoc Lake 2: 14.2 ft, Oconomowoc Lake No. 1: 13.8 ft) and what you want from the lake. Oconomowoc Lake 2 matches its peer on species count.