Becker County Lake Quality

Minnesota, 93 lakes, average grade B (Good)

Becker County has 93 graded lakes, enough that within-county variation matters as much as the county average. Some are deep glacial basins, others are shallow agricultural-watershed waters, and the grade distribution reflects that mix. With an average grade of B, Becker County sits comfortably above the Minnesota median.

Most of the county's monitored lakes are shallow — under 50 feet — which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Bad Medicine Lake (A) is the cleanest in the county.

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Quick Answers for Becker County

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

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

DNR Reports (204)

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

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Fisheries Lake Survey — Wolf
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — White Earth
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Waboose
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Upper Cormorant
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Two Inlets
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Turtle
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Toad
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Strawberry
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Straight
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Stakke
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Shell
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Sallie
Fisheries Lake Survey · MN DNR LakeFinder

All Lakes in Becker County

Rank	Lake	Grade	Clarity	Max Depth	Phosphorus
1	Bad Medicine Lake	A	25 ft	84 ft	6 µg/L
2	Big Sugar Bush Lake	A	17 ft	42 ft	10 µg/L
3	Long Lake	A	20 ft	61 ft	8 µg/L
4	Little Toad Lake	A	15 ft	65 ft	17 µg/L
5	Turtle Lake	A	23 ft	73 ft	8 µg/L
6	Pickerel Lake	A	18 ft	74 ft	10.5 µg/L
7	Strawberry Lake	A	17.8 ft	40 ft	7.5 µg/L
8	Middle Cormorant Lake	A	15.1 ft	40 ft	13 µg/L
9	Nelson Lake	A	24.6 ft	-	-
10	Big Cormorant Lake	A	24.3 ft	75 ft	15.5 µg/L
11	Maud Lake	A	15.3 ft	32 ft	10 µg/L
12	Boot Lake	A	19.5 ft	109 ft	8 µg/L
13	Juggler Lake	A	18 ft	78 ft	7 µg/L
14	Long Lake	A	15.1 ft	61 ft	-
15	Hospital Lake	A	18 ft	-	10.5 µg/L
16	Round Lake	A	10.8 ft	69 ft	16 µg/L
17	Detroit Lake	A	14 ft	89 ft	17 µg/L
18	Bass Lake	A	12.8 ft	48 ft	13 µg/L
19	Bass Lake	A	11.2 ft	50 ft	12 µg/L
20	Elbow Lake	A	12.1 ft	76 ft	14 µg/L
21	Floyd Lake	A	13 ft	34 ft	12.5 µg/L
22	Melissa Lake	A	13.3 ft	37 ft	17.5 µg/L
23	Fox Lake	A	13.5 ft	24 ft	14.5 µg/L
24	White Earth Lake	A	14.5 ft	120 ft	7 µg/L
25	Eunice Lake	A	13.1 ft	30 ft	13 µg/L
26	Meadow Lake	A	13.6 ft	72 ft	12 µg/L
27	Hungry Man Lake	A	14.4 ft	21 ft	11 µg/L
28	Cottage Lake	A	12 ft	-	11 µg/L
29	Pearl Lake	A	10 ft	54 ft	18 µg/L
30	Sands Lake	A	11.5 ft	-	19 µg/L
31	Ice Cracking Lake	A	12.1 ft	73 ft	14 µg/L
32	Little Bemidji Lake	A	12.1 ft	58 ft	11 µg/L
33	Lind Lake	A	12.1 ft	-	19 µg/L
34	Many Point Lake	A	10.7 ft	92 ft	15.5 µg/L
35	Tea Cracker Lake	A	10.2 ft	73 ft	13.5 µg/L
36	Green Water Lake	A	12.1 ft	57 ft	14 µg/L
37	Mud Lake	B	11.5 ft	34 ft	23.5 µg/L
38	Cotton Lake	B	11.5 ft	28 ft	-
39	Sallie Lake	B	12.2 ft	50 ft	21 µg/L
40	Ida Lake	B	11.2 ft	20 ft	23 µg/L
41	Bass Lake	B	7.9 ft	28 ft	19 µg/L
42	Island Lake	B	14.6 ft	38 ft	20 µg/L
43	Two Inlets Lake	B	9.5 ft	60 ft	14 µg/L
44	Mill Lake	B	8.5 ft	10 ft	16 µg/L
45	Little Bass Lake	B	7.9 ft	-	14.5 µg/L
46	Perch Lake	B	14.5 ft	38 ft	-
47	Blueberry Lake	B	12 ft	47 ft	-
48	Loon Lake	B	8.2 ft	-	15 µg/L
49	Johnson Lake	B	9.3 ft	30 ft	15.5 µg/L
50	Buffalo Lake	B	10.8 ft	38 ft	-
51	Little Floyd Lake	B	11 ft	34 ft	21 µg/L
52	Fish Hook Lake	B	9.5 ft	47 ft	18.5 µg/L
53	Muskrat Lake	B	11.5 ft	18 ft	25.5 µg/L
54	Straight Lake	B	8 ft	63 ft	14 µg/L
55	Bullhead Lake	B	12.9 ft	34 ft	-
56	Shell Lake	B	7.3 ft	16 ft	22 µg/L
57	North Twin Lake	B	6.6 ft	-	18 µg/L
58	Glawe Lake	B	9.2 ft	24 ft	23 µg/L
59	Toad Lake	B	7 ft	29 ft	27 µg/L
60	Net Lake	B	6.4 ft	47 ft	14 µg/L
61	Tamarac Lake	B	6.9 ft	34 ft	20 µg/L
62	Big Rush Lake	B	6 ft	-	14 µg/L
63	Munson Lake	B	7.8 ft	26 ft	21 µg/L
64	Reeves Lake	B	8 ft	-	21 µg/L
65	Abbey Lake	B	5.5 ft	-	19 µg/L
66	Rossman Lake	C	7.5 ft	20 ft	-
67	Upper Cormorant Lake	C	8.7 ft	29 ft	30 µg/L
68	Wolf Lake	C	3.9 ft	16 ft	25 µg/L
69	Spear Lake	C	9.8 ft	-	30.5 µg/L
70	Johnson Lake	C	9.5 ft	-	-
71	Height of Land Lake	C	6.6 ft	21 ft	25 µg/L
72	Beseau Lake	C	6.9 ft	27 ft	30.5 µg/L
73	Nelson Lake	C	6.5 ft	-	27 µg/L
74	German Lake	C	-	38 ft	34 µg/L
75	Big Basswood Lake	C	3.1 ft	-	14 µg/L
76	Brandy Lake	C	5 ft	-	25 µg/L
77	Kennedy Lake	C	7 ft	-	35 µg/L
78	Little Sugar Bush Lake	C	5.9 ft	29 ft	29.5 µg/L
79	Little Cormorant Lake	C	7 ft	34 ft	-
80	Stakke Lake	C	3.6 ft	15 ft	53 µg/L
81	St. Clair Lake	C	4.6 ft	-	50 µg/L
82	Waboose Lake	C	4.4 ft	14 ft	33.5 µg/L
83	St. Patrick Lake	C	3 ft	-	24 µg/L
84	Wine Lake	C	4.9 ft	61 ft	32 µg/L
85	Unnamed Lake	D	3.5 ft	-	-
86	Oak Lake	D	3.3 ft	-	53.5 µg/L
87	Lee Lake	D	6 ft	-	-
88	Becker Lake	D	-	120 ft	60 µg/L
89	Carman Lake	D	5.9 ft	-	-
90	Dart Lake	D	3 ft	-	61 µg/L
91	Unnamed Lake	F	1.2 ft	-	-
92	Unnamed Lake	F	2.4 ft	76 ft	-
93	Fish Lake	F	1 ft	-	136 µg/L

Source: EPA National Aquatic Resource Surveys, 2026.