Late afternoon sun over Slim Lake, scattering a bright path across wind-textured water

Hennepin County Lake Quality

Minnesota, 135 lakes, measured by Minnesota PCA

Hennepin County has 135 monitored 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 measurements reflect that mix. 80 of those lakes carry recent nutrient and algae readings. The county-level summary describes that subset, not every water body listed. Phosphorus and algae readings vary widely across Hennepin County; the per-lake pages below carry the numbers.

The county's lakes lean shallow, which makes the readings sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest measured lake is Pomerleau Lake.

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Quick Answers for Hennepin County

Cleanest lakes in Hennepin County →Cleanest lakes in Minnesota →Best swimming lakes in Minnesota →

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

Fishing in Hennepin County

Hennepin County Fishing Guide

Fish species and the cleanest lakes in Hennepin County

DNR Reports (40)

Minnesota DNR LakeFinder resources for lakes in Hennepin County. browse all reports →

These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).

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Fisheries Lake Survey — Wirth
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Winterhalter
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Whaletail
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Weaver
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Twin
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Tanager
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Taft
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Sweeney
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Staring
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Spurzem
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Snelling
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Schandell
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Schmidt
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Ryan
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Round
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Riley
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Rice
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Red Rock
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Rebecca
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Powderhorn
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Pomerleau
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Parkers
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Nokomis
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Mitchell
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Minnetonka
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Medicine
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Lost
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Loring
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Long
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Dutch
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Langdon
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Lake of the Isles
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Independence
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Idlewild
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Hyland
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Hiawatha
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Harriet
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Half Moon
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Boundary Creek Pond
Fisheries Lake Survey · MN DNR LakeFinder
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Fisheries Lake Survey — Forest
Fisheries Lake Survey · MN DNR LakeFinder

All Lakes in Hennepin County

135 lakes · 80 ranked on readings, 55 without enough sampling80 lakes ranked on readings · 55 without enough sampling, hidden

Include not-rated lakes (55)

#	Lake	Clarity	Phosphorus	Algae	Trophic	Max Depth	Access
1	Pomerleau LakeHennepin	10.3 ft	20.5 µg/L	3.9 µg/L	No recent samples	26 ft	Carry-in
2	Sweeney LakeHennepin	6.9 ft	23 µg/L	5.6 µg/L	No recent samples	28 ft	Carry-in
3	Riley LakeHennepin	11.5 ft	24 µg/L	6.5 µg/L	No recent samples	49 ft	✓ Public
4	Lost LakeHennepin	3.2 ft	86 µg/L	5.8 µg/L	No recent samples	6 ft	✓ Public
5	Bush LakeHennepin	13 ft	13.5 µg/L	2.6 µg/L	No recent samples	28 ft	✓ Public
6	Minnetonka LakeHennepin	10 ft	28 µg/L	10.1 µg/L	No recent samples	113 ft	✓ Public
7	Round LakeHennepin	6.6 ft	39 µg/L	14 µg/L	No recent samples	37 ft	✓ Public
8	Bryant LakeHennepin	9.8 ft	37.4 µg/L	4.9 µg/L	No recent samples	45 ft	✓ Public
9	Fish LakeHennepin	8.2 ft	29.4 µg/L	6.1 µg/L	No recent samples	49 ft	✓ Public
10	Camelot LakeHennepin	1.3 ft	75.2 µg/L	6.1 µg/L	No recent samples	31 ft	Carry-in
11	Bde Maka Ska LakeHennepin	9.8 ft	88.5 µg/L	5.6 µg/L	No recent samples	82 ft	✓ Public
12	Harriet LakeHennepin	9.7 ft	189.5 µg/L	5.4 µg/L	No recent samples	87 ft	✓ Public
13	Idlewild LakeHennepin	6.2 ft	36 µg/L	6.9 µg/L	No recent samples	9 ft	Carry-in
14	Hyland LakeHennepin	4.9 ft	37.3 µg/L	13.1 µg/L	No recent samples	12 ft	✓ Public
15	Duck LakeHennepin	5.9 ft	30 µg/L	5.9 µg/L	No recent samples	No recent samples	Carry-in
16	Little Long LakeHennepin	18.7 ft	27.5 µg/L	4.8 µg/L	No recent samples	45 ft	✓ Public
17	Wirth LakeHennepin	10.1 ft	34 µg/L	5.8 µg/L	No recent samples	25 ft	✓ Public
18	Meadow LakeHennepin	3.9 ft	78.5 µg/L	6.2 µg/L	No recent samples	No recent samples	Carry-in
19	Parkers LakeHennepin	7 ft	52.6 µg/L	6 µg/L	No recent samples	37 ft	✓ Public
20	Champlin Mill PondHennepin	4.9 ft	184.6 µg/L	6 µg/L	No recent samples	11 ft	✓ Public
21	Westwood LakeHennepin	5.6 ft	28.5 µg/L	7.4 µg/L	No recent samples	No recent samples	Carry-in
22	Minnetoga LakeHennepin	4.4 ft	36.5 µg/L	9.7 µg/L	No recent samples	27 ft	Carry-in
23	Smetana LakeHennepin	6.6 ft	34 µg/L	5.9 µg/L	No recent samples	12 ft	Carry-in
24	Mud LakeHennepin	3 ft	196 µg/L	8.5 µg/L	No recent samples	No recent samples	Carry-in
25	Unnamed LakeHennepin	3.3 ft	58 µg/L	17 µg/L	No recent samples	No recent samples	✓ Public
26	Medicine LakeHennepin	7.9 ft	73.9 µg/L	9.6 µg/L	No recent samples	49 ft	✓ Public
27	Twin LakeHennepin	5.9 ft	80.5 µg/L	23.4 µg/L	No recent samples	44 ft	✓ Public
28	Whaletail LakeHennepin	3.3 ft	45.8 µg/L	19.4 µg/L	No recent samples	22 ft	✓ Public
29	Cedar LakeHennepin	4.8 ft	84.5 µg/L	12.4 µg/L	No recent samples	51 ft	Carry-in
30	Mitchell LakeHennepin	3 ft	68 µg/L	26.9 µg/L	No recent samples	19 ft	✓ Public
31	Silver LakeHennepin	5.2 ft	61 µg/L	24.9 µg/L	No recent samples	No recent samples	✓ Public
32	Rice Marsh LakeHennepin	7.7 ft	44 µg/L	8 µg/L	No recent samples	No recent samples	Carry-in
33	Mccoy LakeHennepin	2.1 ft	95 µg/L	8 µg/L	No recent samples	No recent samples	✓ Public
34	Diamond LakeHennepin	No recent samples	85.5 µg/L	12 µg/L	No recent samples	5.8 ft	Carry-in
35	Independence LakeHennepin	4.8 ft	68.8 µg/L	18.6 µg/L	No recent samples	58 ft	✓ Public
36	Red Rock LakeHennepin	2.6 ft	75 µg/L	28.5 µg/L	No recent samples	16 ft	✓ Public
37	Rebecca LakeHennepin	4.7 ft	47.4 µg/L	15.5 µg/L	No recent samples	30 ft	✓ Public
38	Hiawatha LakeHennepin	3.3 ft	67 µg/L	22.5 µg/L	No recent samples	33 ft	Carry-in
39	Nokomis LakeHennepin	4 ft	58 µg/L	25.9 µg/L	No recent samples	33 ft	✓ Public
40	East Sarah LakeHennepin	3.5 ft	128.5 µg/L	No recent samples	No recent samples	59 ft	✓ Public
41	Spurzem LakeHennepin	3.3 ft	95.8 µg/L	24.8 µg/L	No recent samples	38 ft	✓ Public
42	Lake of the IslesHennepin	5.2 ft	53 µg/L	12.9 µg/L	No recent samples	31 ft	Carry-in
43	Weaver LakeHennepin	5 ft	38.7 µg/L	10.6 µg/L	No recent samples	57 ft	✓ Public
44	Schmidt LakeHennepin	5.5 ft	60.6 µg/L	14.2 µg/L	No recent samples	25 ft	Carry-in
45	French LakeHennepin	3 ft	50.2 µg/L	No recent samples	No recent samples	No recent samples	✓ Public
46	Brownie LakeHennepin	5 ft	44 µg/L	17.7 µg/L	No recent samples	47 ft	Carry-in
47	Peter LakeHennepin	9.1 ft	72.2 µg/L	8.2 µg/L	No recent samples	No recent samples	Carry-in
48	Forest LakeHennepin	3.7 ft	48.5 µg/L	23.7 µg/L	No recent samples	42 ft	✓ Public
49	Grass LakeHennepin	No recent samples	112 µg/L	20.3 µg/L	No recent samples	No recent samples	Carry-in
50	Magda LakeHennepin	14.1 ft	59 µg/L	12.7 µg/L	No recent samples	No recent samples	✓ Public
51	Schwappauf LakeHennepin	4.4 ft	65.1 µg/L	12.7 µg/L	No recent samples	29 ft	✓ Public
52	Penn LakeHennepin	2 ft	55 µg/L	14.5 µg/L	No recent samples	7 ft	✓ Public
53	Hannan LakeHennepin	4.3 ft	52.5 µg/L	11 µg/L	No recent samples	No recent samples	Carry-in
54	Wolfe Park LakeHennepin	5.9 ft	59.5 µg/L	7.9 µg/L	No recent samples	25 ft	Carry-in
55	Mud LakeHennepin	0.9 ft	150 µg/L	123.5 µg/L	No recent samples	No recent samples	Carry-in
56	Snelling LakeHennepin	1.8 ft	143 µg/L	52 µg/L	No recent samples	9.5 ft	✓ Public
57	Long LakeHennepin	3.3 ft	62 µg/L	32 µg/L	No recent samples	33 ft	✓ Public
58	Unnamed LakeHennepin	No recent samples	220.5 µg/L	82 µg/L	No recent samples	No recent samples	Carry-in
59	Eagle LakeHennepin	3 ft	58 µg/L	32.5 µg/L	No recent samples	34 ft	✓ Public
60	Bass LakeHennepin	4 ft	34 µg/L	33.2 µg/L	No recent samples	31 ft	Carry-in
61	Rice LakeHennepin	2.3 ft	333.8 µg/L	117.9 µg/L	No recent samples	11.5 ft	Carry-in
62	Goose LakeHennepin	0.8 ft	132.1 µg/L	96.5 µg/L	No recent samples	8 ft	Carry-in
63	Powderhorn LakeHennepin	1.5 ft	150 µg/L	47.3 µg/L	No recent samples	24 ft	Carry-in
64	Crystal LakeHennepin	3.5 ft	58 µg/L	34.9 µg/L	No recent samples	39 ft	✓ Public
65	Diamond LakeHennepin	1.7 ft	162.2 µg/L	66.5 µg/L	No recent samples	8 ft	✓ Public
66	Ardmore LakeHennepin	1.3 ft	285 µg/L	130 µg/L	No recent samples	20 ft	✓ Public
67	Thomas LakeHennepin	3.4 ft	78.3 µg/L	34.1 µg/L	No recent samples	No recent samples	Carry-in
68	Victoria LakeHennepin	1.2 ft	78 µg/L	52.5 µg/L	No recent samples	No recent samples	Carry-in
69	Loring LakeHennepin	2.9 ft	77 µg/L	31.9 µg/L	No recent samples	16 ft	✓ Public
70	Cedar Island LakeHennepin	3 ft	93 µg/L	41.8 µg/L	No recent samples	No recent samples	Carry-in
71	Half Moon LakeHennepin	4.2 ft	109.1 µg/L	35.6 µg/L	No recent samples	25 ft	Carry-in
72	Sarah LakeHennepin	3.1 ft	106.1 µg/L	34.3 µg/L	No recent samples	59 ft	✓ Public
73	Sylvan LakeHennepin	1.2 ft	296.6 µg/L	84.6 µg/L	No recent samples	No recent samples	Carry-in
74	Spring LakeHennepin	3.4 ft	434 µg/L	99.1 µg/L	No recent samples	No recent samples	Carry-in
75	Tanager LakeHennepin	2.3 ft	82 µg/L	54.6 µg/L	No recent samples	23 ft	Carry-in
76	Staring LakeHennepin	2.6 ft	72 µg/L	45.4 µg/L	No recent samples	16 ft	✓ Public
77	Winterhalter LakeHennepin	3.9 ft	121.4 µg/L	50.3 µg/L	No recent samples	27 ft	Carry-in
78	Northwood LakeHennepin	1.5 ft	194 µg/L	74 µg/L	No recent samples	No recent samples	Carry-in
79	Cowley LakeHennepin	0.8 ft	738.6 µg/L	343.5 µg/L	No recent samples	No recent samples	Carry-in
80	Lamplighter Park LakeHennepin	1.1 ft	121.5 µg/L	107.5 µg/L	No recent samples	No recent samples	Carry-in
	Ox Yoke LakeHennepin	2.6 ft	396 µg/L	9.2 µg/L	No recent samples	No recent samples	Carry-in
	Normandale LakeHennepin	3.7 ft	84 µg/L	16.2 µg/L	No recent samples	No recent samples	✓ Public
	Hadley LakeHennepin	8 ft	No recent samples	No recent samples	No recent samples	No recent samples	Carry-in
	Langdon LakeHennepin	1.5 ft	No recent samples	No recent samples	No recent samples	38 ft	✓ Public
	Anderson LakeHennepin	5 ft	No recent samples	No recent samples	No recent samples	9 ft	Carry-in
	Mirror LakeHennepin	3.9 ft	No recent samples	No recent samples	No recent samples	No recent samples	Carry-in
	Ryan LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	36 ft	✓ Public
	Rice LakeHennepin	2.6 ft	No recent samples	No recent samples	No recent samples	No recent samples	✓ Public
	Unn LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Carry-in
	Pamela PondHennepin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Carry-in
	Taft LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	45 ft	Carry-in
	Long Meadow LakeHennepin	1.6 ft	No recent samples	No recent samples	No recent samples	No recent samples	✓ Public
	Gleason LakeHennepin	1.7 ft	No recent samples	No recent samples	No recent samples	No recent samples	Carry-in
	Dutch LakeHennepin	4 ft	No recent samples	No recent samples	No recent samples	45 ft	✓ Public
	Shaver LakeHennepin	4 ft	No recent samples	No recent samples	No recent samples	No recent samples	✓ Public
	Snyder LakeHennepin	No recent samples	190 µg/L	164 µg/L	No recent samples	No recent samples	✓ Public
	Haughey LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	23 ft	Not recorded
	Schendel LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Henry LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	6.6 ft	Not recorded
	Lake LauraHennepin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Lemans LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Hayden LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Eagle LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	35.4 ft	✓ Public
	Pike LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	22 ft	Not recorded
	Mooney LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	9.8 ft	Not recorded
	Holy Name LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	6.6 ft	✓ Public
	Edward LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Lake MedinaHennepin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Jubert LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	41 ft	Not recorded
	Hafften LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	43.6 ft	✓ Public
	Robina LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	5.8 ft	Not recorded
	Lake ClassenHennepin	No recent samples	No recent samples	No recent samples	No recent samples	4.7 ft	Not recorded
	Katrina LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	4.5 ft	Not recorded
	Wolsfeld LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	25.9 ft	Not recorded
	Long LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	75.9 ft	Not recorded
	Saint Albans BayHennepin	No recent samples	No recent samples	No recent samples	No recent samples	38.8 ft	Not recorded
	Galpin LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	13.1 ft	Not recorded
	Christmas LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	94.5 ft	✓ Public
	Birch Island LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Glen LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	26.2 ft	Not recorded
	Grays BayHennepin	No recent samples	No recent samples	No recent samples	No recent samples	29.2 ft	✓ Public
	Crane LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	3.6 ft	Not recorded
	Meadowbrook LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Shady Oak LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	34.1 ft	Not recorded
	Neill LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Anderson LakesHennepin	No recent samples	No recent samples	No recent samples	No recent samples	7.4 ft	Not recorded
	Rice LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Grass LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Colman LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Mother LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	6.6 ft	Not recorded
	Lake CorneliaHennepin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Lake CorneliaHennepin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Bass LakeHennepin	No recent samples	No recent samples	No recent samples	No recent samples	No recent samples	Not recorded
	Lake of the IslesHennepin	No recent samples	No recent samples	No recent samples	No recent samples	31 ft	Not recorded
	Twin LakesHennepin	No recent samples	No recent samples	No recent samples	No recent samples	8 ft	Not recorded

NR = no nutrient or algae reading on record. The measurements are published as the authority reports them. Where the data comes from.

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Source: the Minnesota Pollution Control Agency and the Minnesota DNR. See data sources.