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LakeQuality

Big Cedar Lake Northern Basin Deep Site vs Big Cedar Lake

Water quality, depth, fish species, and recreation comparison.

Big Cedar Lake has a higher water quality grade (A, Excellent) than Big Cedar Lake Northern Basin Deep Site (B, Good). Both are in Washington County, Wisconsin.

Big Cedar Lake Northern Basin Deep Site and Big Cedar 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. These two are within a letter of each other on the rubric — Big Cedar Lake Northern Basin Deep Site (B) versus Big Cedar Lake (A). The deciding factors for a recreational visitor are likely physical (depth, access, fish species) rather than water-quality differences.

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.

B

Big Cedar Lake Northern Basin Deep Site

Washington County, Wisconsin

Moderate clarity, visible to about 8.7 ft.

A

Big Cedar Lake

Washington County, Wisconsin

Crystal clear, you can see 16.4 ft down.

Side-by-Side Metrics

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

Source: EPA National Aquatic Resource Surveys, 2026.

MetricBig Cedar Lake Northern Basin Deep SiteBig Cedar Lake
Overall GradeB (Good)A (Excellent)
Water Clarity8.7 ft16.4 ft
Phosphorus21 µg/L14.1 µg/L
Chlorophyll-a (Algae)No dataNo data
Maximum Depth105 ft105 ft
Surface Area937 acres937 acres
Public AccessUnknownUnknown
Fish Species00
Trophic Statemesotrophicoligotrophic

Bold value = better for that metric (lower phosphorus / chlorophyll = cleaner; higher Secchi / depth / species count = better).

Verdict

Big Cedar Lake wins on overall water quality with a Grade A versus Big Cedar Lake Northern Basin Deep Site's Grade B. Water clarity: 16.4 ft vs 8.7 ft. For fishing diversity, Big Cedar Lake also leads with 0 species.