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

Door County Lake Quality

Wisconsin, 12 lakes, measured by Wisconsin DNR

Door County holds 12 monitored lakes. With a sample that small the county-level summary describes those specific waters, not necessarily every water body in the county. 5 of those lakes carry recent nutrient and algae readings. The county-level summary describes that subset, not every water body listed. The county-wide picture is low-to-moderate phosphorus with clear summer transparency across most monitored lakes.

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 Europe Lake.

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Where to stay near Door County

Top-rated places to stay near Door County

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Quick Answers for Door County

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

Planning a trip? Check special fishing regulations for Europe Lake, whether the fish are safe to eat, and the best times to fish — or browse the full Wisconsin regulations index.

Fishing in Door County

Door County Fishing Guide

Fish species and the cleanest lakes in Door County

DNR Reports (7)

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

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

All Lakes in Door County

12 lakes · 5 ranked on readings, 7 without enough sampling5 lakes ranked on readings · 7 without enough sampling, hidden

#LakeClarityPhosphorusAlgaeTrophicMax DepthAccess
1Europe LakeDoor6.5 ft12.2 µg/LNo recent samplesNo recent samples10 ft✓ Public
2Clark LakeDoor12.5 ft10.5 µg/LNo recent samplesNo recent samples25 ft✓ Public
3Kangaroo LakeDoor8.8 ft13.2 µg/LNo recent samplesNo recent samples12 ft✓ Public
4Dunes LakeDoor4 ft21.2 µg/LNo recent samplesNo recent samples1 ftNot recorded
5Forestville MillpondDoor3 ft94.3 µg/LNo recent samplesNo recent samples5 ft✓ Public
Inlet To Dunes LakeDoorNo recent samplesNo recent samplesNo recent samplesNo recent samples1 ftNot recorded
Big MarshDoorNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Little LakeDoorNo recent samplesNo recent samplesNo recent samplesNo recent samples6 ftNot recorded
Mud LakeDoorNo recent samplesNo recent samplesNo recent samplesNo recent samples5 ftNot recorded
Lost LakeDoorNo recent samplesNo recent samplesNo recent samplesNo recent samples5 ftNot recorded
Mackaysee LakeDoorNo recent samplesNo recent samplesNo recent samplesNo recent samples27 ftNot recorded
Schwartz LakeDoorNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot 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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Other Counties in Wisconsin

Outagamie County

2 lakes

Washington County

18 lakes

Sawyer County

120 lakes

Forest County

89 lakes

Kenosha County

20 lakes

Marinette County

65 lakes

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.