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LakeQuality

Danbury Flowage Lake vs Minerva Lake

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

Minerva Lake has a higher water quality grade (A, Excellent) than Danbury Flowage Lake (D, Poor). Both are in Burnett County, Wisconsin.

Both Danbury Flowage Lake and Minerva 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. Minerva Lake (A) is materially cleaner than Danbury Flowage Lake (D). A gap that wide is unlikely to close in a single year of remediation work; it reflects multi-decade differences in the lakes themselves.

For a recreational visitor, the wider grade gap is decisive — Minerva Lake is the better water-quality choice. For a researcher, the gap is the interesting part: what is different about the two watersheds, and which of those differences is mutable?

D

Danbury Flowage Lake

Burnett County, Wisconsin

Murky, only visible to about 6.2 ft.

A

Minerva Lake

Burnett County, Wisconsin

Good clarity, visible to about 10.5 ft.

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.

MetricDanbury Flowage LakeMinerva Lake
Overall GradeD (Poor)A (Excellent)
Water Clarity6.2 ft10.5 ft
PhosphorusNo data16.3 µg/L
Chlorophyll-a (Algae)No dataNo data
Maximum Depth--
Surface Area2.8K acres245 acres
Public AccessUnknownUnknown
Fish Species00
Trophic Stateeutrophicmesotrophic

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

Verdict

Minerva Lake wins on overall water quality with a Grade A versus Danbury Flowage Lake's Grade D. Water clarity: 10.5 ft vs 6.2 ft. For fishing diversity, Minerva Lake also leads with 0 species.