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LakeQuality

Outlet To Lake Geneva vs Powers Lake

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

Powers Lake has a higher water quality grade (A, Excellent) than Outlet To Lake Geneva (D, Poor). Both are in Wisconsin.

Reviewed by LakeQuality Editorial Team · Updated

Outlet To Lake Geneva and Powers 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 meaningfully apart: Powers Lake grades a A while Outlet To Lake Geneva grades a D. That two-letter spread reflects real underlying differences — different watershed inputs, different depth profiles, or different monitoring rigor.

For a recreational visitor, the wider grade gap is decisive — Powers Lake is the better water-quality choice. For a researcher, the gap is the interesting part: what is different about the two watersheds, and which of those differences is mutable?

D

Outlet To Lake Geneva

Walworth County, Wisconsin

No clarity data.

A

Powers Lake

Kenosha County, Wisconsin

Good clarity, visible to about 10 ft.

Side-by-Side Metrics

MetricOutlet To Lake GenevaPowers Lake
Overall GradeD (Poor)A (Excellent) Better
Water ClarityNo data10 ft
Phosphorus658 µg/L17.2 µg/L Better
Chlorophyll-a (Algae)No data3.4 µg/L
Maximum Depth135 ft Better33 ft
Surface Area5,401 acres451 acres
Public AccessYesYes
Fish Species6 Better5
Trophic Statehypereutrophicmesotrophic

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.

Verdict

Powers Lake wins on overall water quality with a Grade A versus Outlet To Lake Geneva's Grade D. For more fish-species variety, Outlet To Lake Geneva edges ahead with 6 documented species.

Source: EPA National Aquatic Resource Surveys, 2026.