Big Round Lake vs Deer Lake
Water quality, depth, fish species, and recreation comparison.
Deer Lake has a higher water quality grade (A, Excellent) than Big Round Lake (C, Fair). Both are in Polk County, Wisconsin.
C
Big Round Lake
Polk County, Wisconsin
Murky, only visible to about 5.6 ft.
A
Deer Lake
Polk County, Wisconsin
Crystal clear, you can see 49.2 ft down.
Side-by-Side Metrics
| Metric | Big Round Lake | Deer Lake |
|---|---|---|
| Overall Grade | C (Fair) | A (Excellent) |
| Water Clarity | 5.6 ft | 49.2 ft |
| Phosphorus | 27.6 µg/L | 16.9 µg/L |
| Chlorophyll-a (Algae) | 21 µg/L | No data |
| Maximum Depth | 17 ft | 46 ft |
| Surface Area | 1.0K acres | 786 acres |
| Public Access | Yes | Yes |
| Fish Species | 5 | 5 |
| Trophic State | eutrophic | oligotrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Deer Lake wins on overall water quality with a Grade A versus Big Round Lake's Grade C. Water clarity: 49.2 ft vs 5.6 ft. For fishing diversity, Deer Lake also leads with 5 species.