What is the cleanest lake in Itasca County, Minnesota?

Long Lake in Itasca County is the highest-rated lake in Itasca County, Minnesota with an EPA water quality grade of A and 16.7 feet of water clarity.

How are these rankings calculated?

Lakes are graded A through F using the Metropolitan Council methodology, which combines Secchi depth (water clarity), total phosphorus, and chlorophyll-a (algae) into a single score. Source data comes from the EPA Water Quality Portal.

Cleanest Lakes in Itasca County, Minnesota

Long Lake in Itasca County leads the rankings with a water quality grade of A and 16.7 ft of clarity. Below are the top 50 cleanest monitored lakes in Itasca County, Minnesota, ranked by EPA water quality score.

Ranked List

#	Lake	County	Grade	Clarity	Phosphorus	Algae
1	Long Lake	Itasca	A	16.7 ft	8 µg/L	-
2	Long Lake	Itasca	A	16.9 ft	10 µg/L	-
3	Clear Lake	Itasca	A	14.9 ft	9 µg/L	-
4	Bass Lake	Itasca	A	18.2 ft	8 µg/L	-
5	Little Wabana Lake	Itasca	A	24 ft	6.5 µg/L	-
6	Maple Lake	Itasca	A	15.3 ft	10 µg/L	-
7	Shallow Lake	Itasca	A	16.4 ft	9 µg/L	-
8	Trout Lake	Itasca	A	18 ft	3.5 µg/L	-
9	Turtle Lake	Itasca	A	17.1 ft	8 µg/L	-
10	Pokegama Lake	Itasca	A	16.1 ft	12 µg/L	-
11	Wabana Lake	Itasca	A	18 ft	8 µg/L	-
12	North Star Lake	Itasca	A	19 ft	11 µg/L	-
13	Little Trout Lake	Itasca	A	22 ft	9.5 µg/L	-
14	Bluewater Lake	Itasca	A	18.5 ft	5 µg/L	-
15	Mirror Lake	Itasca	A	18 ft	10 µg/L	-
16	Siseebakwet Lake	Itasca	A	19 ft	5 µg/L	-
17	Johnson Lake	Itasca	A	15.7 ft	9.5 µg/L	-
18	Big Ole Lake	Itasca	A	21.8 ft	7 µg/L	-
19	Larson Lake	Itasca	A	21 ft	4 µg/L	-
20	Burns Lake	Itasca	A	16.1 ft	8 µg/L	-
21	Big Island Lake	Itasca	A	16.4 ft	14 µg/L	-
22	Little Jay Gould Lake	Itasca	A	21.5 ft	16 µg/L	-
23	Erskine Lake	Itasca	A	18 ft	11 µg/L	-
24	Ames Lake	Itasca	A	10 ft	15 µg/L	2.3 µg/L
25	Deer Lake	Itasca	A	13.1 ft	11 µg/L	-
26	Five Island Lake	Itasca	A	13 ft	12 µg/L	-
27	Sand Lake	Itasca	A	13.2 ft	18 µg/L	-
28	Pickerel Lake	Itasca	A	10.2 ft	17.5 µg/L	-
29	Rush Island Lake	Itasca	A	10.8 ft	15 µg/L	-
30	Swan Lake	Itasca	A	13.5 ft	18 µg/L	-
31	Trestle Lake	Itasca	A	14.8 ft	13 µg/L	-
32	Beatrice Lake	Itasca	A	10.5 ft	15 µg/L	-
33	Bello Lake	Itasca	A	13.1 ft	17 µg/L	-
34	Gunn Lake	Itasca	A	14.3 ft	9 µg/L	-
35	Busties Lake	Itasca	A	10.3 ft	16 µg/L	-
36	South Sugar Lake	Itasca	A	14.4 ft	15 µg/L	-
37	Little Whitefish Lake	Itasca	A	11.5 ft	14 µg/L	-
38	Jack the Horse Lake	Itasca	A	11.6 ft	13.5 µg/L	-
39	Coon-Sandwick Lake	Itasca	A	10.7 ft	14 µg/L	-
40	Sandwick Lake	Itasca	A	11.6 ft	10.5 µg/L	-
41	Mead Lake	Itasca	A	10.7 ft	15.5 µg/L	-
42	Alice Lake	Itasca	B	8.5 ft	12 µg/L	3.6 µg/L
43	Sugar Lake	Itasca	B	8.4 ft	18 µg/L	4.9 µg/L
44	Deer Lake	Itasca	B	8.9 ft	16 µg/L	-
45	Jay Gould Lake	Itasca	B	13 ft	21 µg/L	-
46	Helen Lake	Itasca	B	8 ft	17 µg/L	-
47	Battle Lake	Itasca	B	8.2 ft	15 µg/L	-
48	Schoolhouse Lake	Itasca	B	5.2 ft	18 µg/L	3.6 µg/L
49	Greeley Lake	Itasca	B	9 ft	-	2.8 µg/L
50	Little Island Lake	Itasca	B	6.9 ft	13 µg/L	-

Cleanest Lakes in Itasca County, Minnesota

Ranked List

More Answers for Itasca County, Minnesota