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Camelot Lake reads lower on nutrients and algae than Petenwell Flowage Lake. Both are in Wisconsin.

Reviewed by LakeQuality Editorial Team · Updated

Camelot Lake and Petenwell Flowage Lake are both in Wisconsin — a same-state head-to-head where the comparison comes down to lake-specific differences in depth, watershed, and monitoring history rather than the broader state-level water-quality regime. The readings are meaningfully apart: Camelot Lake carries clearly lower phosphorus and chlorophyll-a readings than Petenwell Flowage Lake. A spread that wide reflects real underlying differences, in watershed inputs, depth profiles, or monitoring rigor.

For a recreational visitor, the wider gap in the readings is decisive: Camelot Lake has the lower nutrient and algae numbers. For a researcher, the gap is the interesting part: what is different about the two watersheds, and which of those differences is mutable?

Camelot Lake

Adams County, Wisconsin

Moderate clarity, visible to about 7.6 ft.

Petenwell Flowage Lake

Juneau County, Wisconsin

Very murky, less than 2.3 ft of visibility.

Side-by-Side Metrics

MetricCamelot LakePetenwell Flowage Lake
Water Clarity7.6 ft Better2.3 ft
Phosphorus18.3 µg/L Better81.7 µg/L
Chlorophyll-a (Algae)No dataNo data
Maximum Depth24 ft44 ft Better
Surface Area393 acres23,173 acres
Public AccessYesYes
Fish Species48 Better
Trophic Statemesotrophiceutrophic

A green ✓ marks the better value for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better). Surface area and trophic state carry no tick — a bigger lake is not a better lake.

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Verdict

Camelot Lake reads lower on nutrients and algae than Petenwell Flowage Lake. Water clarity: 7.6 ft vs 2.3 ft. For more fish-species variety, Petenwell Flowage Lake edges ahead with 8 documented species.

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Source: EPA National Aquatic Resource Surveys, 2026.