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LakeQuality

Custer Mine Pond vs Qacmainstfbk Lake

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

Qacmainstfbk Lake has a higher water quality grade (A, Excellent) than Custer Mine Pond (C, Fair). Both are in Wisconsin.

Both Custer Mine Pond and Qacmainstfbk Lake sit in North Dakota. 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. The grades are meaningfully apart: Qacmainstfbk Lake grades a A while Custer Mine Pond grades a C. That two-letter spread reflects real underlying differences — different watershed inputs, different depth profiles, or different monitoring rigor.

For a recreational visitor, the wider grade gap is decisive — Qacmainstfbk 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?

C

Custer Mine Pond

McLean County, Wisconsin

Very murky, less than 2.2 ft of visibility.

A

Qacmainstfbk 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.

MetricCuster Mine PondQacmainstfbk Lake
Overall GradeC (Fair)A (Excellent)
Water Clarity2.2 ftNo data
PhosphorusNo data10 µg/L
Chlorophyll-a (Algae)3.3 µg/L7 µg/L
Maximum Depth--
Surface Area10.7 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

Qacmainstfbk Lake wins on overall water quality with a Grade A versus Custer Mine Pond's Grade C. For fishing diversity, Qacmainstfbk Lake also leads with 0 species.