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LakeQuality

Lake Audubon vs Qacmainstdup Lake

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

Qacmainstdup Lake has a higher water quality grade (B, Good) than Lake Audubon (B, Good). Both are in Wisconsin.

Lake Audubon and Qacmainstdup Lake are both in North Dakota — 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 — Lake Audubon (B) versus Qacmainstdup Lake (B). 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

Lake Audubon

McLean County, Wisconsin

Murky, only visible to about 4.7 ft.

B

Qacmainstdup Lake

Mercer County, Wisconsin

No clarity data.

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.

MetricLake AudubonQacmainstdup Lake
Overall GradeB (Good)B (Good)
Water Clarity4.7 ftNo data
PhosphorusNo data10 µg/L
Chlorophyll-a (Algae)4.7 µg/L11 µg/L
Maximum Depth--
Surface Area19.1K acres133.0K acres
Public AccessUnknownUnknown
Fish Species00
Trophic Stateeutrophicmesotrophic

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

Verdict

Qacmainstdup Lake wins on overall water quality with a Grade B versus Lake Audubon's Grade B. For fishing diversity, Qacmainstdup Lake also leads with 0 species.