Diamond Lake vs Minnetonka Lake
Water quality, depth, fish species, and recreation comparison.
Minnetonka Lake has a higher water quality grade (B, Good) than Diamond Lake (F, Very Poor). Both are in Hennepin County, Minnesota.
F
Diamond Lake
Hennepin County, Minnesota
Very murky, less than 1.4 ft of visibility.
B
Minnetonka Lake
Hennepin County, Minnesota
Moderate clarity, visible to about 9.5 ft.
Side-by-Side Metrics
| Metric | Diamond Lake | Minnetonka Lake |
|---|---|---|
| Overall Grade | F (Very Poor) | B (Good) |
| Water Clarity | 1.4 ft | 9.5 ft |
| Phosphorus | 171.6 µg/L | 27 µg/L |
| Chlorophyll-a (Algae) | No data | No data |
| Maximum Depth | 8 ft | 113 ft |
| Surface Area | 405.02 acres | 14.2K acres |
| Public Access | Yes | Yes |
| Fish Species | 0 | 18 |
| Trophic State | hypereutrophic | 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 Diamond Lake's Grade F. Water clarity: 9.5 ft vs 1.4 ft. For fishing diversity, Minnetonka Lake also leads with 18 species.