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LakeQuality

Geneva Lake vs Geneva Lake

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

Geneva Lake and Geneva Lake both received the same overall water quality grade of A (Excellent). Both are in Walworth County, Wisconsin.

Geneva Lake and Geneva 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. These two are within a letter of each other on the rubric — Geneva Lake (A) versus Geneva Lake (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.

A

Geneva Lake

Walworth County, Wisconsin

Crystal clear, you can see 20.2 ft down.

A

Geneva Lake

Walworth County, Wisconsin

Crystal clear, you can see 20.7 ft down.

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.

MetricGeneva LakeGeneva Lake
Overall GradeA (Excellent)A (Excellent)
Water Clarity20.2 ft20.7 ft
Phosphorus13 µg/L13.4 µg/L
Chlorophyll-a (Algae)No dataNo data
Maximum Depth135 ft135 ft
Surface Area5.4K acres5.4K acres
Public AccessUnknownUnknown
Fish Species00
Trophic Stateoligotrophicoligotrophic

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 (Geneva Lake: 20.2 ft, Geneva Lake: 20.7 ft) and what you want from the lake. Geneva Lake matches its peer on species count.