Skip to main content
LakeQuality

Olp-09 Lake vs Wpa-03 Lake

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

Wpa-03 Lake has a higher water quality grade (C, Fair) than Olp-09 Lake (F, Very Poor). Both are in Dubois County, Wisconsin.

Both Olp-09 Lake and Wpa-03 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. Wpa-03 Lake (C) is materially cleaner than Olp-09 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 — Wpa-03 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

Olp-09 Lake

Dubois County, Wisconsin

Very murky, less than 1.7 ft of visibility.

C

Wpa-03 Lake

Dubois County, Wisconsin

Murky, only visible to about 5.7 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.

MetricOlp-09 LakeWpa-03 Lake
Overall GradeF (Very Poor)C (Fair)
Water Clarity1.7 ft5.7 ft
PhosphorusNo dataNo data
Chlorophyll-a (Algae)75.6 µg/L11 µg/L
Maximum Depth--
Surface Area24 acres21 acres
Public AccessUnknownUnknown
Fish Species00
Trophic Statehypereutrophiceutrophic

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

Verdict

Wpa-03 Lake wins on overall water quality with a Grade C versus Olp-09 Lake's Grade F. Water clarity: 5.7 ft vs 1.7 ft. For fishing diversity, Wpa-03 Lake also leads with 0 species.