What is the cleanest lake in Anoka County, Minnesota?

Round Lake in Anoka County is the highest-rated lake in Anoka County, Minnesota with an EPA water quality grade of A and 8.9 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 Anoka County, Minnesota

Round Lake in Anoka County leads the rankings with a water quality grade of A and 8.9 ft of clarity. Below are the top 50 cleanest monitored lakes in Anoka County, Minnesota, ranked by EPA water quality score.

Ranked List

#	Lake	County	Grade	Clarity	Phosphorus	Algae
1	Round Lake	Anoka	A	8.9 ft	19 µg/L	5.3 µg/L
2	East Twin Lake	Anoka	A	10.7 ft	18.5 µg/L	4.9 µg/L
3	Howard Lake	Anoka	A	3.3 ft	24 µg/L	3.6 µg/L
4	Grass Lake	Anoka	A	4.3 ft	20 µg/L	5.3 µg/L
5	Netta Lake	Anoka	A	11.3 ft	14.5 µg/L	4.6 µg/L
6	Laddie Lake	Anoka	A	-	22 µg/L	3.6 µg/L
7	Crooked Lake	Anoka	C	7.1 ft	24 µg/L	9.5 µg/L
8	George Lake	Anoka	C	7.3 ft	22 µg/L	8.3 µg/L
9	Ham Lake	Anoka	C	8.9 ft	22 µg/L	9.2 µg/L
10	Amelia Lake	Anoka	C	3.9 ft	36.5 µg/L	6 µg/L
11	Moore Lake	Anoka	C	3.9 ft	41 µg/L	5.2 µg/L
12	Rice Lake	Anoka	D	2.6 ft	125 µg/L	18.1 µg/L
13	Martin Lake	Anoka	D	2.5 ft	55 µg/L	29.4 µg/L
14	Golden Lake	Anoka	D	4.5 ft	57 µg/L	11.8 µg/L
15	Locke Lake	Anoka	D	3 ft	97 µg/L	20.9 µg/L
16	Peltier Lake	Anoka	F	2.5 ft	357.5 µg/L	50.6 µg/L
17	Sandy Lake	Anoka	F	2.1 ft	102 µg/L	48.1 µg/L
18	Typo Lake	Anoka	F	1 ft	198.5 µg/L	85.3 µg/L
19	Centerville Lake	Anoka	F	3.9 ft	78 µg/L	46.3 µg/L
20	Lake Itasca	Anoka	NR	-	-	-
21	Rogers Lake	Anoka	NR	-	-	-
22	Cenaiko Lake	Anoka	NR	-	-	-
23	Baldwin Lake	Anoka	NR	-	-	-
24	Amelia Lake	Anoka	NR	-	-	-
25	Rondeau Lake	Anoka	NR	-	-	-
26	Crossways Lake	Anoka	NR	-	-	-
27	Higgins Lake	Anoka	NR	-	-	-
28	Little Coon Lake	Anoka	NR	-	-	-
29	South Coon Lake	Anoka	NR	-	-	-
30	Ward Lake	Anoka	NR	-	-	-
31	Swan Lake	Anoka	NR	-	-	-
32	Hickey Lake	Anoka	NR	-	-	-
33	Minard Lake	Anoka	NR	-	-	-
34	Sandshore Lake	Anoka	NR	-	-	-
35	Coopers Lake	Anoka	NR	-	-	-
36	Fish Lake	Anoka	NR	-	-	-
37	Neds Lake	Anoka	NR	-	-	-
38	Deer Lake	Anoka	NR	-	-	-
39	Devil Lake	Anoka	NR	-	-	-
40	Anderson Lake	Anoka	NR	-	-	-
41	Rice Lake	Anoka	NR	-	-	-
42	Island Lake	Anoka	NR	-	-	-
43	Tamarack Lake	Anoka	NR	-	-	-
44	Fawn Lake	Anoka	NR	-	-	-
45	Norris Lake	Anoka	NR	-	-	-
46	Mud Lake	Anoka	NR	-	-	-
47	Pinnaker Lake	Anoka	NR	-	-	-
48	Goose Lake	Anoka	NR	-	-	-
49	Bass Lake	Anoka	NR	-	-	-
50	Burns Lake	Anoka	NR	-	-	-

Ranked List

More Answers for Anoka County, Minnesota