Hubbard County Lake Quality

Minnesota, 77 lakes, average grade B (Good)

Hubbard County in Minnesota carries 77 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.

Many of the county's lakes are deep glacial basins — over 50 feet at their deepest point — which gives them thermal stratification and a buffer against summer warming. Dead Lake (grade A) is the cleanest in the county.

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Quick Answers for Hubbard County

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

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

DNR Reports (214)

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

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Fisheries Lake Survey — Waboose
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Upper Twin
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Upper Bottle
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Twenty-One
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Third Crow Wing
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Tenth Crow Wing
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Stocking
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Swamp
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Spider
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Spearhead
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Skunk
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Sixth Crow Wing
Fisheries Lake Survey · MN DNR LakeFinder

All Lakes in Hubbard County

Rank	Lake	Grade	Clarity	Max Depth	Phosphorus
1	Dead Lake	A	16 ft	34 ft	10 µg/L
2	Blue Lake	A	17.4 ft	84 ft	7 µg/L
3	Spearhead Lake	A	15 ft	81 ft	-
4	Island Lake	A	16.4 ft	32 ft	10 µg/L
5	Crooked Lake	A	19.2 ft	-	8 µg/L
6	Lower Bottle Lake	A	15 ft	110 ft	10 µg/L
7	Upper Bottle Lake	A	16 ft	55 ft	11 µg/L
8	Little Mantrap Lake	A	17 ft	54 ft	8 µg/L
9	Mary Lake	A	19.5 ft	48 ft	-
10	11 Crow Wing Lake	A	18.4 ft	80 ft	11 µg/L
11	Emma Lake	A	19.5 ft	50 ft	10.5 µg/L
12	Skunk Lake	A	17 ft	55 ft	11.5 µg/L
13	Spider (Ne Lake	A	17.1 ft	96 ft	11 µg/L
14	Gilmore Lake	A	20.5 ft	54 ft	9 µg/L
15	Owl Lake	A	15 ft	26 ft	-
16	Big Sand Lake	A	23 ft	135 ft	7 µg/L
17	Little Sand Lake	A	20 ft	80 ft	7 µg/L
18	Beauty Lake	A	21 ft	53 ft	-
19	Big Bass Lake	A	19.4 ft	60 ft	5 µg/L
20	Spring Lake	A	-	36 ft	-
21	Bad Axe Lake	A	15.4 ft	39 ft	14 µg/L
22	Ojibway Lake	A	15.8 ft	22 ft	10 µg/L
23	Peysenske Lake	A	15 ft	-	-
24	Belle Taine Lake	A	22.8 ft	56 ft	7 µg/L
25	Waboose Lake	A	16.8 ft	32 ft	10 µg/L
26	Twenty-One Lake	A	17 ft	51.5 ft	10 µg/L
27	Gillett Lake	A	19 ft	49 ft	8 µg/L
28	29-0237-00 Lake	A	17.1 ft	63 ft	5 µg/L
29	Potato Lake	A	23 ft	76 ft	-
30	Long Lake	A	11.2 ft	135 ft	10 µg/L
31	Deer Lake	A	12.8 ft	-	12 µg/L
32	Eagle Lake	A	11.3 ft	77 ft	15 µg/L
33	Mantrap Lake	A	12 ft	-	17 µg/L
34	Benedict Lake	A	11 ft	91 ft	8.5 µg/L
35	Mow Lake	A	14.5 ft	34 ft	8 µg/L
36	Island Lake	A	10.5 ft	65 ft	17 µg/L
37	Pickerel Lake	A	11.2 ft	26 ft	14 µg/L
38	George Lake	A	12.6 ft	29 ft	12 µg/L
39	Potato Lake	A	12 ft	87 ft	11 µg/L
40	Duck Lake	A	10.2 ft	23 ft	16 µg/L
41	Midge Lake	A	18 ft	24 ft	20 µg/L
42	Hattie Lake	A	13.1 ft	39 ft	18 µg/L
43	Moran Lake	A	11.8 ft	32 ft	16 µg/L
44	Kabekona Lake	A	11.8 ft	133 ft	11 µg/L
45	Nelson Lake	A	14.5 ft	19.5 ft	12 µg/L
46	Hinds Lake	A	13.8 ft	36 ft	11 µg/L
47	Fish Hook Lake	A	10 ft	76 ft	13 µg/L
48	Boulder Lake	A	10.8 ft	28 ft	16.5 µg/L
49	Tenth Crow Wing Lake	A	10.5 ft	40 ft	13 µg/L
50	Big Stony Lake	A	10.3 ft	24 ft	11 µg/L
51	Hennepin Lake	A	10 ft	14 ft	16 µg/L
52	Shallow Lake	B	8.2 ft	10 ft	11 µg/L
53	Ninth Crow Wing Lake	B	9.5 ft	65 ft	15.5 µg/L
54	Ham Lake	B	9.7 ft	22 ft	15 µg/L
55	Stocking Lake	B	11.5 ft	25 ft	22 µg/L
56	Garfield Lake	B	9.5 ft	32 ft	17.5 µg/L
57	Palmer Lake	B	9.8 ft	21 ft	11 µg/L
58	Frielund Lake	B	9.5 ft	-	10 µg/L
59	Halverson Lake	B	8.9 ft	32 ft	18 µg/L
60	Mccarty Lake	B	9 ft	-	14 µg/L
61	Lasalle Lake	B	6.9 ft	213 ft	8 µg/L
62	Big Wolf Lake	B	11.7 ft	57 ft	-
63	Alice Lake	B	7.2 ft	21 ft	21 µg/L
64	Upper Twin Lake	B	6.9 ft	12 ft	26 µg/L
65	Plantagenet Lake	B	6.7 ft	65 ft	20.5 µg/L
66	Fifth Crow Wing Lake	B	9.5 ft	35 ft	20 µg/L
67	Fourth Crow Wing Lake	B	8 ft	10 ft	22 µg/L
68	Sixth Crow Wing Lake	B	8.9 ft	40 ft	21 µg/L
69	Schoolcraft Lake	B	8.4 ft	37 ft	29 µg/L
70	Paine Lake	B	4.9 ft	6 ft	15 µg/L
71	Portage Lake	C	5.7 ft	17 ft	28 µg/L
72	Lost Lake	C	8 ft	-	-
73	Seventh Crow Wing Lake	C	6.6 ft	42 ft	25 µg/L
74	Eighth Crow Wing Lake	C	5.7 ft	30 ft	28 µg/L
75	Third Crow Wing Lake	C	2.5 ft	35 ft	21 µg/L
76	Hart Lake	C	4.5 ft	13 ft	46 µg/L
77	First Crow Wing Lake	C	5.9 ft	15 ft	30 µg/L

Source: EPA National Aquatic Resource Surveys, 2026.