What is the cleanest lake in Oneida County, Wisconsin?

Whitefish Lake in Oneida County is the highest-rated lake in Oneida County, Wisconsin with an EPA water quality grade of B and 8.8 feet of water clarity.

How are these rankings calculated?

Lakes are graded A through F on nutrients and algae — total phosphorus, nitrogen, chlorophyll-a, and turbidity — against EPA National Lakes Assessment 2022 condition classes for that lake’s ecoregion. Water clarity (Secchi depth) is measured and shown; it is not the letter. Lakes without enough recent samples are UNRATED, not given an F. Source data comes from the EPA Water Quality Portal.

Cleanest Lakes in Oneida County, Wisconsin

Whitefish Lake in Oneida County leads the rankings with a water quality grade of B and 8.8 ft of clarity. Below are the top 50 cleanest monitored lakes in Oneida County, Wisconsin, ranked by EPA water quality score.

Ranked List

#	Lake	County	Grade	Clarity	Phosphorus	Algae
1	Whitefish Lake	Oneida	B	8.8 ft	15.9 µg/L	-
2	Bass Lake	Oneida	B	6 ft	21 µg/L	-
3	Sugar Camp Lake	Oneida	B	16.5 ft	10.3 µg/L	-
4	Indian Lake	Oneida	B	11 ft	13.8 µg/L	-
5	Tom Doyle Lake	Oneida	B	7 ft	13.3 µg/L	-
6	Bear Lake	Oneida	B	8 ft	17.7 µg/L	-
7	Crescent Lake	Oneida	B	14 ft	13.1 µg/L	-
8	Velvet Lake	Oneida	B	12.8 ft	14.6 µg/L	-
9	Bearskin Lake	Oneida	B	6 ft	23.8 µg/L	-
10	Upper Kaubashine Lake	Oneida	B	19 ft	12.2 µg/L	-
11	Stella Lake	Oneida	B	8 ft	14.4 µg/L	-
12	Squash Lake	Oneida	B	17.5 ft	10 µg/L	-
13	Mid Lake	Oneida	B	7 ft	23.7 µg/L	-
14	Alva Lake	Oneida	B	19.5 ft	11.5 µg/L	-
15	Franklin Lake	Oneida	B	16.2 ft	12.3 µg/L	-
16	Perch Lake	Oneida	B	15 ft	14.8 µg/L	-
17	Mildred Lake	Oneida	B	18 ft	12.3 µg/L	-
18	Manson Lake	Oneida	B	12 ft	10.8 µg/L	-
19	Lower Kaubashine Lake	Oneida	B	13.8 ft	11.1 µg/L	-
20	Hasbrook Lake	Oneida	B	21 ft	10.3 µg/L	-
21	Deep Hole Lake	Oneida	B	4.3 ft	21.3 µg/L	-
22	Flannery Lake	Oneida	B	14.5 ft	12.7 µg/L	-
23	Big Stone Lake	Oneida	B	4.2 ft	22.5 µg/L	-
24	Blue Lake	Oneida	B	23 ft	10.7 µg/L	-
25	Lee Lake	Oneida	B	22.5 ft	8.9 µg/L	-
26	George Lake	Oneida	B	5 ft	22.1 µg/L	-
27	Two Sisters Lake	Oneida	B	19.6 ft	10.8 µg/L	-
28	Shishebogama Lake	Oneida	B	10 ft	13.4 µg/L	-
29	Clearwater Lake	Oneida	B	16.8 ft	10 µg/L	-
30	Spur Lake	Oneida	B	2 ft	23.3 µg/L	-
31	Lake Thompson	Oneida	B	4 ft	22.4 µg/L	-
32	Lake Julia	Oneida	B	9.9 ft	14.3 µg/L	-
33	Washburn Lake	Oneida	B	7.5 ft	18.7 µg/L	-
34	Minocqua Lake	Oneida	B	14.8 ft	13.7 µg/L	-
35	Lone Stone Lake	Oneida	B	14.5 ft	11.5 µg/L	-
36	Little Bearskin Lake	Oneida	B	8.3 ft	22.7 µg/L	-
37	Nose Lake	Oneida	B	12 ft	10.8 µg/L	-
38	Great Bass Lake	Oneida	B	10.5 ft	14.2 µg/L	-
39	Fuller Lake	Oneida	C	4.3 ft	25.1 µg/L	-
40	Cranberry Lake	Oneida	C	4.5 ft	30.8 µg/L	-
41	Kathan Lake	Oneida	C	2.7 ft	29.8 µg/L	-
42	Lake Nokomis	Oneida	C	4.3 ft	36.2 µg/L	-
43	Moen Lake	Oneida	C	2.8 ft	31 µg/L	-
44	Thunder Lake	Oneida	C	2.5 ft	32.3 µg/L	-
45	Hancock Lake	Oneida	C	5.4 ft	25.4 µg/L	-
46	Horsehead Lake	Oneida	C	6.5 ft	29.9 µg/L	-
47	Crystal Lake	Oneida	D	2.5 ft	47.4 µg/L	-
48	Denton Lake	Oneida	NR	-	-	-
49	Bog Lake	Oneida	NR	-	-	-
50	Deer Lake	Oneida	NR	-	-	-

Ranked List

More Answers for Oneida County, Wisconsin