East Sarah Lake vs Minnetonka Lake
Water quality, depth, fish species, and recreation comparison.
Minnetonka Lake has a higher water quality grade (B, Good) than East Sarah Lake (D, Poor). Both are in Hennepin County, Minnesota.
Both East Sarah Lake and Minnetonka Lake sit in Minnesota. 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. Minnetonka Lake (B) is materially cleaner than East Sarah Lake (D). A gap that wide is unlikely to close in a single year of remediation work; it reflects multi-decade differences in the lakes themselves.
For a recreational visitor, the wider grade gap is decisive — Minnetonka 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?
East Sarah Lake
Murky, only visible to about 3.5 ft.
Minnetonka Lake
Moderate clarity, visible to about 9.5 ft.
Side-by-Side Metrics
| Metric | East Sarah Lake | Minnetonka Lake |
|---|---|---|
| Overall Grade | D (Poor) | B (Good) |
| Water Clarity | 3.5 ft | 9.5 ft |
| Phosphorus | No data | 27 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 59 ft | 113 ft |
| Surface Area | 557.23 acres | 14.2K acres |
| Public Access | Yes | Yes |
| Fish Species | 1 | 1 |
| Trophic State | eutrophic | mesotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Minnetonka Lake wins on overall water quality with a Grade B versus East Sarah Lake's Grade D. Water clarity: 9.5 ft vs 3.5 ft. For fishing diversity, Minnetonka Lake also leads with 1 species.