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LakeQuality

Okauchee Lake Site vs Okauchee Lake

Water quality, depth, fish species, and recreation comparison.

Okauchee Lake has a higher water quality grade (A, Excellent) than Okauchee Lake Site (B, Good). Both are in Waukesha County, Wisconsin.

Okauchee Lake Site and Okauchee 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: Okauchee Lake Site (B) and Okauchee 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.

B

Okauchee Lake Site

Waukesha County, Wisconsin

Murky, only visible to about 5.9 ft.

A

Okauchee Lake

Waukesha County, Wisconsin

Good clarity, visible to about 12 ft.

Side-by-Side Metrics

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

MetricOkauchee Lake SiteOkauchee Lake
Overall GradeB (Good)A (Excellent)
Water Clarity5.9 ft12 ft
Phosphorus19 µg/L17.1 µg/L
Chlorophyll-a (Algae)No dataNo data
Maximum Depth90 ft90 ft
Surface Area1.2K acres1.2K acres
Public AccessUnknownUnknown
Fish Species00
Trophic Statemesotrophicmesotrophic

Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).

Verdict

Okauchee Lake wins on overall water quality with a Grade A versus Okauchee Lake Site's Grade B. Water clarity: 12 ft vs 5.9 ft. For fishing diversity, Okauchee Lake also leads with 0 species.