Skip to main content
LakeQuality

Oconomowoc Lake No. 1 vs Pine Lake

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

Pine Lake has a higher water quality grade (A, Excellent) than Oconomowoc Lake No. 1 (A, Excellent). Both are in Waukesha County, Wisconsin.

Oconomowoc Lake No. 1 and Pine 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 — Oconomowoc Lake No. 1 (A) versus Pine 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

Oconomowoc Lake No. 1

Waukesha County, Wisconsin

Good clarity, visible to about 13.8 ft.

A

Pine Lake

Waukesha County, Wisconsin

Crystal clear, you can see 25 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.

MetricOconomowoc Lake No. 1Pine Lake
Overall GradeA (Excellent)A (Excellent)
Water Clarity13.8 ft25 ft
Phosphorus16 µg/L11.9 µg/L
Chlorophyll-a (Algae)No dataNo data
Maximum Depth60 ft85 ft
Surface Area818 acres711 acres
Public AccessUnknownUnknown
Fish Species00
Trophic Statemesotrophicoligotrophic

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

Verdict

Pine Lake wins on overall water quality with a Grade A versus Oconomowoc Lake No. 1's Grade A. Water clarity: 25 ft vs 13.8 ft. For fishing diversity, Pine Lake also leads with 0 species.