Clam Lake vs Upper Clam Lake
Water quality, depth, fish species, and recreation comparison.
Clam Lake has a higher water quality grade (D, Poor) than Upper Clam Lake (F, Very Poor). Both are in Burnett County, Wisconsin.
Both Clam Lake and Upper Clam Lake sit in Wisconsin. 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. The grades are close: Clam Lake (D) and Upper Clam Lake (F) are within one letter of each other on the LakeGrade rubric. The per-parameter sub-grades below will show where the small differences actually live.
With grades this close, the choice between the two lakes turns on non-water-quality factors: depth, fish species, public access, distance from home. The per-lake pages below cover all of those.
Clam Lake
Very murky, less than 3 ft of visibility.
Upper Clam Lake
Very murky, less than 2 ft of visibility.
Side-by-Side Metrics
| Metric | Clam Lake | Upper Clam Lake |
|---|---|---|
| Overall Grade | D (Poor) | F (Very Poor) |
| Water Clarity | 3 ft | 2 ft |
| Phosphorus | 66 µg/L | No data |
| Chlorophyll-a (Algae) | 13 µg/L | No data |
| Maximum Depth | 11 ft | 11 ft |
| Surface Area | 1.3K acres | 1.3K acres |
| Public Access | Unknown | Unknown |
| Fish Species | 0 | 0 |
| Trophic State | eutrophic | eutrophic |
Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).
Verdict
Clam Lake wins on overall water quality with a Grade D versus Upper Clam Lake's Grade F. Water clarity: 3 ft vs 2 ft. For fishing diversity, Clam Lake also leads with 0 species.