Clearwater Lake vs Fountain Lake
Water quality, depth, fish species, and recreation comparison.
Clearwater Lake has a higher water quality grade (A, Excellent) than Fountain Lake (F, Very Poor). Both are in Wright County, Minnesota.
Both Clearwater Lake and Fountain 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. Clearwater Lake (A) is materially cleaner than Fountain Lake (F). 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 — Clearwater 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?
Clearwater Lake
Moderate clarity, visible to about 9.8 ft.
Fountain Lake
Very murky, less than 1 ft of visibility.
Side-by-Side Metrics
| Metric | Clearwater Lake | Fountain Lake |
|---|---|---|
| Overall Grade | A (Excellent) | F (Very Poor) |
| Water Clarity | 9.8 ft | 1 ft |
| Phosphorus | 22 µg/L | 126.5 µg/L |
| Chlorophyll-a (Algae) | 6.3 µg/L | 174 µg/L |
| Maximum Depth | 73 ft | 10 ft |
| Surface Area | 3,187 acres | 435 acres |
| Public Access | Yes | Yes |
| Fish Species | 17 | 5 |
| Trophic State | mesotrophic | hypereutrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Clearwater Lake wins on overall water quality with a Grade A versus Fountain Lake's Grade F. Water clarity: 9.8 ft vs 1 ft. For fishing diversity, Clearwater Lake also leads with 17 species.
Source: EPA National Aquatic Resource Surveys, 2026.