Madison Lake vs Washington Lake
Water quality, depth, fish species, and recreation comparison.
Madison Lake has a higher water quality grade (D, Poor) than Washington Lake (F, Very Poor). Both are in Minnesota.
D
Madison Lake
Blue Earth County, Minnesota
Murky, only visible to about 3.6 ft.
F
Washington Lake
Le Sueur County, Minnesota
Murky, only visible to about 4.5 ft.
Side-by-Side Metrics
| Metric | Madison Lake | Washington Lake |
|---|---|---|
| Overall Grade | D (Poor) | F (Very Poor) |
| Water Clarity | 3.6 ft | 4.5 ft |
| Phosphorus | 75 µg/L | 116 µg/L |
| Chlorophyll-a (Algae) | No data | 48.1 µg/L |
| Maximum Depth | 59 ft | 51 ft |
| Surface Area | 1.4K acres | 1.5K acres |
| Public Access | Yes | Yes |
| Fish Species | 20 | 18 |
| Trophic State | eutrophic | eutrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Madison Lake wins on overall water quality with a Grade D versus Washington Lake's Grade F. Water clarity: 3.6 ft vs 4.5 ft. For fishing diversity, Madison Lake also leads with 20 species.