Late afternoon sun over Slim Lake, scattering a bright path across wind-textured water

Shawano County Lake Quality

Wisconsin, 37 lakes, measured by Wisconsin DNR

The county-level average smooths over real differences — a single agricultural watershed near the southwest corner can pull the average down even if the rest of the county runs clean. 21 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 Shawano County carry favourable nutrient and algae readings for Wisconsin.

The county's lakes lean shallow, which makes the readings sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest measured lake is Big Lake.

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Quick Answers for Shawano County

Cleanest lakes in Shawano County →Cleanest lakes in Wisconsin →Best swimming lakes in Wisconsin →

Planning a trip? Check special fishing regulations for Big Lake — or browse the full Wisconsin regulations index.

Fishing in Shawano County

Shawano County Fishing Guide

Fish species and the cleanest lakes in Shawano County

DNR Reports (6)

Wisconsin DNR Fisheries Survey resources for lakes in Shawano County. browse all reports →

These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).

2025
Koonz and Beaulieu lakes shocking survey, 2025
Fisheries Survey · WI DNR · 2025 (PDF)
2023
Shawano Lake comprehensive summary, 2023
Comprehensive Survey · WI DNR · 2023 (PDF)
2022
Kolpack Lake spring shocking survey, 2022
Spring Shocking Survey · WI DNR · 2022 (PDF)
2022
Pella Pond spring netting survey, 2022
Netting Survey · WI DNR · 2022 (PDF)
2021
Cloverleaf Chain shocking survey, 2021
Fisheries Survey · WI DNR · 2021 (PDF)
2021
White Clay Lake comprehensive fisheries survey, 2021
Comprehensive Survey · WI DNR · 2021 (PDF)

All Lakes in Shawano County

37 lakes · 21 ranked on readings, 16 without enough sampling21 lakes ranked on readings · 16 without enough sampling, hidden

Include not-rated lakes (16)

#	Lake	Clarity	Phosphorus	Algae	Trophic	Max Depth	Access
1	Big LakeShawano	8 ft	15 µg/L	2.7 µg/L	No recent samples	No recent samples	Not recorded
2	Koonz LakeShawano	10.8 ft	17 µg/L	1.7 µg/L	No recent samples	40 ft	✓ Public
3	Malone LakeShawano	13.5 ft	18 µg/L	2.1 µg/L	No recent samples	31 ft	Not recorded
4	Sams LakeShawano	11 ft	18 µg/L	2.2 µg/L	No recent samples	13 ft	Not recorded
5	Mission LakeShawano	17.5 ft	17 µg/L	2.1 µg/L	No recent samples	44 ft	Not recorded
6	Bealeau LakeShawano	11.5 ft	17 µg/L	2.2 µg/L	No recent samples	24 ft	✓ Public
7	Round LakeShawano	11 ft	14.5 µg/L	No recent samples	No recent samples	39 ft	✓ Public
8	Long LakeShawano	6 ft	22.3 µg/L	No recent samples	No recent samples	35 ft	Not recorded
9	Grass LakeShawano	8.5 ft	15.6 µg/L	No recent samples	No recent samples	52 ft	✓ Public
10	Lulu LakeShawano	7 ft	16.4 µg/L	No recent samples	No recent samples	13 ft	✓ Public
11	Loon LakeShawano	5.5 ft	20.8 µg/L	No recent samples	No recent samples	22 ft	✓ Public
12	Bahr LakeShawano	6.8 ft	20.1 µg/L	No recent samples	No recent samples	44 ft	Not recorded
13	Korth LakeShawano	12 ft	13.5 µg/L	No recent samples	No recent samples	48 ft	✓ Public
14	Pine LakeShawano	10.5 ft	13.8 µg/L	No recent samples	No recent samples	35 ft	Not recorded
15	Unknown LakeShawano	5 ft	14.8 µg/L	No recent samples	No recent samples	No recent samples	✓ Public
16	White Clay LakeShawano	5 ft	31.6 µg/L	No recent samples	No recent samples	46 ft	✓ Public
17	Shawano LakeShawano	5.9 ft	29.6 µg/L	No recent samples	No recent samples	39.5 ft	✓ Public
18	Upper Red LakeShawano	7.5 ft	39.2 µg/L	No recent samples	No recent samples	15 ft	✓ Public
19	Schoenick Lake atShawano	5 ft	45.3 µg/L	No recent samples	No recent samples	34 ft	✓ Public
20	Wagner LakeShawano	4 ft	52 µg/L	No recent samples	No recent samples	15 ft	✓ Public
21	Tilleda PondShawano	No recent samples	64.4 µg/L	No recent samples	No recent samples	11 ft	✓ Public
	Beauleau LakeShawano	9.5 ft	No recent samples	No recent samples	No recent samples	24 ft	✓ Public
	White LakeShawano	5.3 ft	32.8 µg/L	No recent samples	No recent samples	11 ft	✓ Public
	Pensaukee LakeShawano	10.5 ft	No recent samples	No recent samples	No recent samples	49 ft	✓ Public
	Pella LakeShawano	2.5 ft	63.7 µg/L	No recent samples	No recent samples	13 ft	✓ Public
	Eddy by Pony Creek LakeShawano	No recent samples	No recent samples	No recent samples	No recent samples	11 ft	✓ Public
	Tilleda Off Bridge LakeShawano	No recent samples	No recent samples	No recent samples	No recent samples	11 ft	✓ Public
	Upper Tigerton PondShawano	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Mud LakeShawano	No recent samples	No recent samples	No recent samples	No recent samples	2 ft	Not recorded
	Mud LakeShawano	No recent samples	No recent samples	No recent samples	No recent samples	2 ft	Not recorded
	Lily LakeShawano	No recent samples	No recent samples	No recent samples	No recent samples	13 ft	Not recorded
	Washington LakeShawano	No recent samples	No recent samples	No recent samples	No recent samples	18 ft	✓ Public
	Lower Red LakeShawano	No recent samples	No recent samples	No recent samples	No recent samples	28 ft	✓ Public
	Island LakeShawano	No recent samples	No recent samples	No recent samples	No recent samples	32 ft	Not recorded
	Big LakeShawano	No recent samples	No recent samples	No recent samples	No recent samples	40 ft	Not recorded
	Baker LakeShawano	No recent samples	No recent samples	No recent samples	No recent samples	19 ft	Not recorded
	Homme PondShawano	No recent samples	No recent samples	No recent samples	No recent samples	13 ft	Not recorded

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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Browse every Wisconsin lake, or the full directory of lakes across all United States (49 states), Canada (Ontario, Québec, Nova Scotia, British Columbia and Newfoundland and Labrador), and 38 other country hubs..

Source: the Wisconsin Department of Natural Resources. See data sources.