Pierce County Lake Quality
Wisconsin, 1 lake, average grade C (Fair)
Only 1 lakes in Pierce County carry an active grade. The county-level summary is therefore representative of those specific lakes, not necessarily of every water body in the county. Pierce County averages to a C. The distribution behind that average matters more than the letter: a few stressed lakes versus many decent ones can produce the same average as the inverse.
Most of the county's monitored lakes are shallow — under 50 feet — which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Nugget Lake (C) is the cleanest in the county.
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Quick Answers for Pierce County
Planning a trip? Check special fishing regulations for Nugget Lake — or browse the full Wisconsin regulations index.
All Lakes in Pierce County
1 lake1 graded lake
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| 1 | CNugget LakePierce | C | 7.5 ft | 27.4 µg/L | No recent samples | No recent samples | ✓ Public |
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Other Counties in Wisconsin
See how Pierce County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 39 states and 2 Canadian provinces.
Source: EPA National Aquatic Resource Surveys, 2026.