Brown County Lake Quality
Wisconsin, 4 lakes, measured by Wisconsin DNR
Brown County has 4 monitored lakes — a thin enough sample that one or two stressed lakes can move the county average noticeably. Use the per-lake pages below for what actually matters. 2 of those lakes carry recent nutrient and algae readings. The county-level summary describes that subset, not every water body listed. Most monitored lakes in Brown County carry favourable nutrient and algae readings for Wisconsin.
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. Quarry Lake has the lowest nutrient and algae readings in the county.
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Quick Answers for Brown County
Planning a trip? Check special fishing regulations for Quarry Lake — or browse the full Wisconsin regulations index.
DNR Reports (4)
Wisconsin DNR Fisheries Survey resources for lakes in Brown County. browse all reports →
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- 2021Status of Great Lakes Musky in Green Bay, 2021Musky Survey · WI DNR · 2021 (PDF)
- 2021Status of walleye in Southern Green Bay, 2021Walleye Survey · WI DNR · 2021 (PDF)
- 2018Green Bay walleye tagging survey, 2018Walleye Survey · WI DNR · 2018 (PDF)
- 2015Green Bay walleye tagging survey, 2015Walleye Survey · WI DNR · 2015 (PDF)
All Lakes in Brown County
4 lakes · 2 ranked on readings, 2 without enough sampling2 lakes ranked on readings · 2 without enough sampling, hidden
| # | Lake | Clarity | Phosphorus | Algae | Trophic | Max Depth | Access |
|---|---|---|---|---|---|---|---|
| 1 | Quarry LakeBrown | 8 ft | 34 µg/L | 9.6 µg/L | No recent samples | No recent samples | Not recorded |
| 2 | Osnuhsa LakeBrown | 5.6 ft | 63.5 µg/L | 9.9 µg/L | No recent samples | No recent samples | Not recorded |
| Lily LakeBrown | 9.6 ft | No recent samples | No recent samples | No recent samples | 19 ft | ✓ Public | |
| Lgb LakeBrown | No recent samples | No recent samples | No recent samples | No recent samples | No recent samples | ✓ Public |
NR = no nutrient or algae reading on record. The measurements are published as the authority reports them. Where the data comes from.
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Other Counties in Wisconsin
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Source: the Wisconsin Department of Natural Resources. See data sources.