Lake County Lake Quality

Minnesota, 142 lakes, average grade B (Good)

Lake County in Minnesota carries 142 graded lakes — one of the lake-richer counties in our dataset. Coverage that dense usually reflects active lake-association sampling alongside state-agency monitoring. The county-wide average lands at B — solid water quality with most lakes carrying clear summer transparency and low-to-moderate phosphorus.

A meaningful share of Lake's lakes break 50 feet of depth, which matters because deep lakes hold cooler water all summer and resist the resuspended-sediment problems that plague shallow basins. The county's best-graded lake is Clearwater Lake (A).

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Quick Answers for Lake County

Cleanest lakes in Lake County →Cleanest lakes in Minnesota →Safest swimming lakes in Minnesota →

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

DNR Reports (181)

Minnesota DNR LakeFinder resources for lakes in Lake County. Showing 12 most recent — browse all reports →

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Fisheries Lake Survey — Ahmakose
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Wind
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Wilson
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — White Iron
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Washte
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Wanless
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Vera
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Two
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Trident
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Triangle
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Trader
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Amoeber
Fisheries Lake Survey · MN DNR LakeFinder

All Lakes in Lake County

Rank	Lake	Grade	Clarity	Max Depth	Phosphorus
1	Clearwater Lake	A	18 ft	46 ft	-
2	Eddy Lake	A	16.5 ft	95 ft	-
3	Bear Lake	A	17.4 ft	31 ft	9.6 µg/L
4	Jenny Lake	A	15.5 ft	93 ft	-
5	Tofte Lake	A	18.5 ft	73 ft	-
6	Knife Lake	A	20 ft	-	-
7	Hanson Lake	A	16 ft	100 ft	-
8	Boot Lake	A	16.5 ft	83 ft	-
9	Ahsub Lake	A	18 ft	78 ft	-
10	Dumbbell Lake	A	15.8 ft	40 ft	-
11	Missionary Lake	A	17 ft	71 ft	-
12	Kekekabic Lake	A	19.3 ft	130 ft	-
13	Dix Lake	A	15.7 ft	-	-
14	Ahmakose Lake	A	18.5 ft	68 ft	-
15	Vera Lake	A	19 ft	55 ft	-
16	Cherry Lake	A	22 ft	30 ft	-
17	Ester Lake	A	18.5 ft	110 ft	-
18	Kek Lake	A	19.5 ft	130 ft	-
19	Topaz Lake	A	17.5 ft	110 ft	-
20	Kekekabic Pond 3	A	18 ft	-	-
21	Gijikiki Lake	A	19.3 ft	70 ft	-
22	Amoeber Lake	A	18 ft	110 ft	-
23	Indiana Lake	A	15 ft	31 ft	-
24	Divide Lake	A	33.2 ft	-	-
25	Parent Lake	A	23 ft	50 ft	-
26	Dunnigan Lake	A	33.2 ft	-	-
27	38-0502-00 Lake	A	21 ft	59 ft	-
28	Cramer Lake	A	-	4 ft	13.5 µg/L
29	Cabin Lake	A	-	3 ft	14 µg/L
30	Ls94 Lake	A	-	-	-
31	Seq044a Lake	A	-	-	-
32	Suseq44a Lake	A	-	-	-
33	Stewart Lake	A	10 ft	20 ft	12 µg/L
34	Triangle Lake	A	12.3 ft	43 ft	6.5 µg/L
35	Wilson Lake	A	10.3 ft	53 ft	13 µg/L
36	Jordan Lake	B	10 ft	66 ft	-
37	Fraser Lake	B	11 ft	105 ft	-
38	Moose Lake	B	13 ft	65 ft	-
39	Portage Lake	B	13.3 ft	45 ft	-
40	Ima Lake	B	11 ft	116 ft	-
41	Rabbit Lake	B	13.5 ft	105 ft	-
42	Thomas Lake	B	14 ft	110 ft	-
43	Sucker Lake	B	12 ft	111 ft	-
44	Disappointment Lake	B	14 ft	54 ft	-
45	Spoon Lake	B	14 ft	85 ft	-
46	Wisini Lake	B	10 ft	68 ft	-
47	Ashigan Lake	B	12 ft	59 ft	-
48	Ensign Lake	B	10 ft	30 ft	-
49	Johnson Lake	B	11.5 ft	24 ft	-
50	Tin Can Mike Lake	B	11 ft	29 ft	-
51	Newfound Lake	B	13 ft	45 ft	-
52	Lax Lake	B	9.4 ft	35 ft	18 µg/L
53	Found Lake	B	11.5 ft	38 ft	-
54	Boulder Lake	B	11.5 ft	-	-
55	Ogishkemuncie Lake	B	12 ft	75 ft	-
56	Sandpit Lake	B	14 ft	53 ft	-
57	Kiana Lake	B	13.8 ft	-	-
58	Polly Lake	B	11 ft	95 ft	-
59	Mueller Lake	B	10.2 ft	36 ft	-
60	Skoota Lake	B	13 ft	-	-
61	Kingfisher Lake	B	12.1 ft	42 ft	-
62	Snowbank Lake	B	11 ft	150 ft	-
63	Ashdick Lake	B	13 ft	50 ft	-
64	Pickle Lake	B	11 ft	-	-
65	Agamok Lake	B	10 ft	-	-
66	Gerund Lake	B	10 ft	85 ft	-
67	Good Lake	B	10 ft	51 ft	-
68	Lake of the Clouds	B	12 ft	110 ft	-
69	Bean Lake	B	9.8 ft	26 ft	9.4 µg/L
70	Tetagouche Lake	B	7.2 ft	20 ft	16.5 µg/L
71	Ninemile Lake	B	6.9 ft	40 ft	16 µg/L
72	Neglige Lake	B	11.3 ft	58 ft	-
73	Pan Lake	B	11 ft	-	-
74	North Branch Kawishi Lake	B	8.2 ft	13 ft	14 µg/L
75	Skull Lake	B	11 ft	38 ft	-
76	Rivalry Lake	B	10 ft	100 ft	-
77	Link Lake	B	10 ft	34 ft	-
78	Frog Lake	B	10 ft	38 ft	-
79	Washte Lake	B	12 ft	-	-
80	Campers Lake	B	-	2.5 ft	23 µg/L
81	Farm Lake	B	5.5 ft	56 ft	15 µg/L
82	Garden Lake	B	5 ft	55 ft	15 µg/L
83	Crooked Lake	B	3.4 ft	4 ft	11 µg/L
84	White Iron Lake	B	4.5 ft	47 ft	19 µg/L
85	South Wigwam Lake	B	5.4 ft	6 ft	15 µg/L
86	Beaver Hut Lake	B	3.4 ft	12 ft	18 µg/L
87	Wanless Lake	B	5.4 ft	16 ft	17 µg/L
88	Horseshoe Lake	C	8 ft	40 ft	-
89	Chippewa Lake	C	7 ft	-	-
90	Wind Lake	C	9 ft	32 ft	-
91	Gibson Lake	C	8.5 ft	24 ft	-
92	Crooked Lake	C	9 ft	165 ft	-
93	Alice Lake	C	8.2 ft	53 ft	-
94	Basswood Lake	C	9 ft	111 ft	-
95	Fall Lake	C	5.6 ft	32 ft	21 µg/L
96	Insula Lake	C	9.5 ft	63 ft	-
97	Melon Lake	C	8.5 ft	-	-
98	Bonnie Lake	C	8.5 ft	11 ft	-
99	Horse Lake	C	7 ft	25 ft	-
100	Hudson Lake	C	9.5 ft	-	-
101	Flash Lake	C	9 ft	24 ft	-
102	Splash Lake	C	7.5 ft	18 ft	-
103	Cattyman Lake	C	7 ft	9 ft	-
104	Strup Lake	C	9.7 ft	195 ft	-
105	Adventure Lake	C	6.8 ft	10 ft	-
106	One Lake	C	7.5 ft	57 ft	-
107	Three Lake	C	8 ft	37 ft	-
108	Two Lake	C	8.5 ft	35 ft	-
109	Annie Lake	C	9 ft	16 ft	-
110	Lunar Lake	C	8 ft	60 ft	-
111	Niki Lake	C	7.7 ft	-	-
112	Trader Lake	C	8.5 ft	10 ft	-
113	Toe Lake	C	7 ft	95 ft	-
114	Jackfish Lake	C	7 ft	-	-
115	Hazel Lake	C	8 ft	-	-
116	Trident Lake	C	7.3 ft	14 ft	-
117	Round Island Lake	C	-	4 ft	35 µg/L
118	South Farm Lake	D	5 ft	31 ft	-
119	Square Lake	D	5.5 ft	7 ft	-
120	Ham Lake	D	6 ft	53 ft	-
121	Kane Lake	D	6.5 ft	17 ft	-
122	Four Lake	D	6.4 ft	25 ft	-
123	Marble Lake	D	4.5 ft	20 ft	-
124	Hatchet Lake	D	5.5 ft	40 ft	-
125	Grouse Lake	D	6 ft	11 ft	-
126	Gander Lake	D	5.6 ft	7 ft	-
127	Polly Lake	D	4.5 ft	21 ft	-
128	Rifle Lake	D	4.8 ft	37 ft	-
129	Isabella Lake	D	5.8 ft	19 ft	-
130	Papoose Lake	D	6 ft	-	-
131	Little Gabbro Lake	D	6.5 ft	26 ft	-
132	Newton Lake	D	4.5 ft	47 ft	-
133	Gabbro Lake	D	4.3 ft	50 ft	-
134	Christianson Lake	D	2 ft	8 ft	35.5 µg/L
135	N. Br. Kawishiwi R. Lake	D	6.2 ft	13 ft	-
136	Elton Lake	D	6 ft	53 ft	-
137	Jitterbug Lake	D	4 ft	5 ft	-
138	Koma Lake	D	5 ft	14 ft	-
139	Kawasachong Lake	D	4 ft	11 ft	-
140	Malberg Lake	D	5.5 ft	37 ft	-
141	Kawishi Lake	D	4.5 ft	12 ft	-
142	Manomin Lake	F	2 ft	18 ft	-

Source: EPA National Aquatic Resource Surveys, 2026.