What is the cleanest lake in Vilas County, Wisconsin?

Spider Lake in Vilas County is the highest-rated lake in Vilas County, Wisconsin with an EPA water quality grade of B and 10.5 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 Vilas County, Wisconsin

Spider Lake in Vilas County leads the rankings with a water quality grade of B and 10.5 ft of clarity. Below are the top 50 cleanest monitored lakes in Vilas County, Wisconsin, ranked by EPA water quality score.

Ranked List

#	Lake	County	Grade	Clarity	Phosphorus	Algae
1	Spider Lake	Vilas	B	10.5 ft	14.1 µg/L	-
2	Pickerel Lake	Vilas	B	6 ft	23 µg/L	-
3	Carpenter Lake	Vilas	B	7.5 ft	17 µg/L	-
4	North Turtle Lake	Vilas	B	8.5 ft	15.4 µg/L	-
5	Plum Lake	Vilas	B	14.2 ft	13 µg/L	-
6	Bass Lake	Vilas	B	12.8 ft	18.5 µg/L	-
7	Pioneer Lake	Vilas	B	9.5 ft	15.2 µg/L	-
8	Little Spider Lake	Vilas	B	16 ft	11.6 µg/L	-
9	Rosalind Lake	Vilas	B	19.3 ft	10.5 µg/L	-
10	Oxbow Lake	Vilas	B	8 ft	15.1 µg/L	-
11	Towanda Lake	Vilas	B	10.5 ft	12.7 µg/L	-
12	Birch Lake	Vilas	B	6.5 ft	16.3 µg/L	-
13	Rush Lake	Vilas	B	5 ft	19.8 µg/L	-
14	Imogene Lake	Vilas	B	10 ft	14.9 µg/L	-
15	Anderson Lake	Vilas	B	20.5 ft	11.5 µg/L	-
16	Carlin Lake	Vilas	B	21 ft	7.3 µg/L	-
17	High Lake	Vilas	B	10 ft	14.1 µg/L	-
18	Little Tamarack Flowage Lake	Vilas	B	8.2 ft	17 µg/L	-
19	Big Lake	Vilas	B	12.5 ft	12.9 µg/L	-
20	Papoose Lake	Vilas	B	15 ft	10.4 µg/L	-
21	Kentuck Lake	Vilas	B	9.5 ft	24.3 µg/L	-
22	Little Crooked Lake	Vilas	B	8.5 ft	16.8 µg/L	-
23	Big Arbor Vitae Lake	Vilas	B	6 ft	24.1 µg/L	-
24	Plummer Lake	Vilas	B	18 ft	11.8 µg/L	-
25	Mcdonald Lake	Vilas	B	8.6 ft	20.2 µg/L	-
26	Found Lake	Vilas	B	6 ft	20.7 µg/L	-
27	Circle Lily Lake	Vilas	B	6 ft	14.6 µg/L	-
28	Big Portage Lake	Vilas	B	18.5 ft	12 µg/L	-
29	Annabelle Lake	Vilas	B	8 ft	15.4 µg/L	-
30	Forest Lake	Vilas	B	22.2 ft	12.8 µg/L	-
31	Crab Lake	Vilas	B	11 ft	12.6 µg/L	-
32	Wildcat Lake	Vilas	B	7 ft	16.9 µg/L	-
33	Sunset Lake	Vilas	B	17.3 ft	11.4 µg/L	-
34	Black Oak Lake	Vilas	B	29 ft	10.6 µg/L	-
35	Horsehead Lake	Vilas	B	10 ft	14.6 µg/L	-
36	Ballard Lake	Vilas	B	15 ft	15.4 µg/L	-
37	Lynx Lake	Vilas	B	12.8 ft	9.5 µg/L	-
38	Beaver Lake	Vilas	B	6.5 ft	16.6 µg/L	-
39	Snipe Lake	Vilas	B	11 ft	14.7 µg/L	-
40	Moon Lake	Vilas	B	13 ft	14.1 µg/L	-
41	Dead Pike Lake	Vilas	B	8 ft	14.2 µg/L	-
42	Presque Isle Lake	Vilas	B	18 ft	10.3 µg/L	-
43	Anvil Lake	Vilas	B	12 ft	11.8 µg/L	-
44	Crawling Stone Lake	Vilas	B	16 ft	10.5 µg/L	-
45	South Turtle Lake	Vilas	B	8 ft	17.3 µg/L	-
46	Gunlock Lake	Vilas	B	9 ft	18.9 µg/L	-
47	Hiawatha Lake	Vilas	B	4 ft	18.8 µg/L	-
48	Harris Lake	Vilas	B	14.9 ft	12.5 µg/L	-
49	Alma Lake	Vilas	B	12 ft	15 µg/L	-
50	Irving Lake	Vilas	B	11.3 ft	18.6 µg/L	-

Ranked List

More Answers for Vilas County, Wisconsin