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LakeQuality

Obs-07 Lake vs Osk-07 Lake

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

Osk-07 Lake has a higher water quality grade (B, Good) than Obs-07 Lake (F, Very Poor). Both are in Wisconsin.

Both Obs-07 Lake and Osk-07 Lake sit in Indiana. 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. Osk-07 Lake (B) is materially cleaner than Obs-07 Lake (F). 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 — Osk-07 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?

F

Obs-07 Lake

Washington County, Wisconsin

Very murky, less than 0.8 ft of visibility.

B

Osk-07 Lake

Clark County, Wisconsin

Murky, only visible to about 6.1 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.

MetricObs-07 LakeOsk-07 Lake
Overall GradeF (Very Poor)B (Good)
Water Clarity0.8 ft6.1 ft
PhosphorusNo dataNo data
Chlorophyll-a (Algae)155.9 µg/L2.6 µg/L
Maximum Depth--
Surface Area86 acres183.18 acres
Public AccessUnknownUnknown
Fish Species00
Trophic Statehypereutrophicmesotrophic

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

Verdict

Osk-07 Lake wins on overall water quality with a Grade B versus Obs-07 Lake's Grade F. Water clarity: 6.1 ft vs 0.8 ft. For fishing diversity, Osk-07 Lake also leads with 0 species.