Green Lake vs Rush Lake
Water quality, depth, fish species, and recreation comparison.
Green Lake has a higher water quality grade (B, Good) than Rush Lake (C, Fair). Both are in Wisconsin.
Both Green Lake and Rush 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. The grades are close: Green Lake (B) and Rush Lake (C) 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.
Green Lake
Good clarity, visible to about 13.1 ft.
Rush Lake
Very murky, less than 3.2 ft of visibility.
Side-by-Side Metrics
| Metric | Green Lake | Rush Lake |
|---|---|---|
| Overall Grade | B (Good) | C (Fair) |
| Water Clarity | 13.1 ft | 3.2 ft |
| Phosphorus | 23 µg/L | 26 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 236 ft | 5 ft |
| Surface Area | 7.9K acres | 2.7K acres |
| Public Access | Unknown | Unknown |
| Fish Species | 0 | 0 |
| Trophic State | mesotrophic | eutrophic |
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 Rush Lake's Grade C. Water clarity: 13.1 ft vs 3.2 ft. For fishing diversity, Green Lake also leads with 0 species.