Green Lake East Basin vs Green Lake
Water quality, depth, fish species, and recreation comparison.
Green Lake has a higher water quality grade (B, Good) than Green Lake East Basin (C, Fair). Both are in Green Lake County, Wisconsin.
Both Green Lake East Basin and Green Lake sit in Wisconsin. A same-state comparison strips out the state-level water-quality regime as a variable: any grade differences here are about the lakes themselves, not the agencies grading them. These two are within a letter of each other on the rubric — Green Lake East Basin (C) versus Green Lake (B). 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.
Green Lake East Basin
Good clarity, visible to about 11.8 ft.
Green Lake
No clarity data.
Side-by-Side Metrics
| Metric | Green Lake East Basin | Green Lake |
|---|---|---|
| Overall Grade | C (Fair) | B (Good) |
| Water Clarity | 11.8 ft | No data |
| Phosphorus | 41 µg/L | 20.6 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 236 ft | 236 ft |
| Surface Area | 7,920 acres | 7,920 acres |
| Public Access | Yes | Yes |
| Fish Species | 7 | 7 |
| Trophic State | mesotrophic | mesotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Green Lake wins on overall water quality with a Grade B versus Green Lake East Basin's Grade C. For fishing diversity, Green Lake also leads with 7 species.
Source: EPA National Aquatic Resource Surveys, 2026.