Ocauchee Lake vs Okauchee Lake Site
Water quality, depth, fish species, and recreation comparison.
Okauchee Lake Site reads lower on nutrients and algae than Ocauchee Lake. Both are in Waukesha County, Wisconsin.
Both Ocauchee Lake and Okauchee Lake Site 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. The readings are close: Ocauchee Lake and Okauchee Lake Site sit within a narrow band of each other on phosphorus, chlorophyll-a and clarity. The per-parameter table below shows where the small differences actually live.
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.
Ocauchee Lake
Murky, only visible to about 6.6 ft.
Okauchee Lake Site
Murky, only visible to about 4.6 ft.
Side-by-Side Metrics
| Metric | Ocauchee Lake | Okauchee Lake Site |
|---|---|---|
| Water Clarity | 6.6 ft Better | 4.6 ft |
| Phosphorus | 17.5 µg/L | 16.2 µg/L Better |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 90 ft | 90 ft |
| Surface Area | 1,210 acres | 1,210 acres |
| Public Access | Yes | Yes |
| Fish Species | 6 | 6 |
| Trophic State | mesotrophic | mesotrophic |
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.
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Verdict
Ocauchee Lake and Okauchee Lake Site read the same on nutrients and algae overall. The tiebreakers come down to clarity (Ocauchee Lake: 6.6 ft, Okauchee Lake Site: 4.6 ft) and what you want from the lake. Ocauchee Lake matches its peer on species count.
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Where to stay near Ocauchee Lake and Okauchee Lake Site
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Source: EPA National Aquatic Resource Surveys, 2026.