What lakes are in the Rum River Watershed?

114 monitored lakes drain through the Rum River Watershed, including Clear Lake, Big Pine Lake, Lone Lake, and others. The watershed spans Minnesota.

What is the cleanest lake in the Rum River Watershed?

Clear Lake in Aitkin County is the highest-rated lake in the Rum River Watershed with a Grade A.

What is a HUC8 watershed?

HUC8 (Hydrologic Unit Code, 8-digit) is the USGS classification for "subbasins" — the level at which major named river systems are usually identified. The Rum River Watershed corresponds to HUC8 07010207.

Rum River Watershed

Minnesota · 114 monitored lakes · 14 grade A · 30 grade B · HUC8 07010207

The Rum River draining from Mille Lacs Lake south to the Mississippi — a State Wild and Scenic River with relatively undeveloped lake country.

Reviewed by LakeQuality Editorial Team · Updated Jul 20, 2026

Counties in this watershed

Mille Lacs, Aitkin, Kanabec, Isanti, Anoka

Monitored Lakes (114)

#	Lake	County	Grade	Clarity	Area	Depth
1	Clear Lake	Aitkin	A	15 ft	574 acres	24 ft
2	Big Pine Lake	Aitkin	A	17 ft	638 acres	78 ft
3	Lone Lake	Aitkin	A	22.5 ft	433 acres	60 ft
4	Round Lake	Aitkin	A	14.5 ft	737 acres	125 ft
5	Spectacle Lake	Isanti	A	13.8 ft	246 acres	51.5 ft
6	Cedar Lake	Aitkin	A	11.1 ft	1,726 acres	105 ft
7	Upper Birch Lake	Isanti	A	10.8 ft	-	-
8	East Twin Lake	Anoka	A	10.7 ft	92 acres	68 ft
9	Sugar Lake	Aitkin	A	14.5 ft	416 acres	45 ft
10	Farm Island Lake	Aitkin	A	11.3 ft	2,005 acres	56 ft
11	Netta Lake	Anoka	A	11.3 ft	-	-
12	Nord Lake	Aitkin	A	10.5 ft	418 acres	29 ft
13	Outlet of Onamia Lake on the Rum River	Mille Lacs	A	-	1,044 acres	10 ft
14	Outlet of Ogechie Lake on the Rum River	Mille Lacs	A	-	409 acres	6 ft
15	Round Lake	Aitkin	B	14.5 ft	554 acres	27 ft
16	Round Lake	Aitkin	B	14.5 ft	634 acres	59 ft
17	Round Lake	Anoka	B	8.9 ft	-	-
18	Long Lake	Aitkin	B	10.8 ft	435 acres	116 ft
19	Mille Lacs Lake	Aitkin	B	10 ft	128,250 acres	42 ft
20	Bachelor Lake	Aitkin	B	14 ft	54 acres	47 ft
21	Wilkins Lake	Aitkin	B	13 ft	349 acres	39 ft
22	Hammal Lake	Aitkin	B	12.5 ft	376 acres	44 ft
23	Vanduse Lake	Aitkin	B	11 ft	240 acres	27 ft
24	Lower Birch Lake	Isanti	B	7.4 ft	-	-
25	Dam Lake	Aitkin	B	11.3 ft	598 acres	48 ft
26	Spirit Lake	Aitkin	B	11 ft	11 acres	46 ft
27	Landgren Lake	Aitkin	B	13 ft	54 acres	47 ft
28	Laddie Lake	Anoka	B	-	66 acres	4 ft
29	Ml-Peterson Lake	Mille Lacs	B	7.4 ft	128,250 acres	42 ft
30	Ml-Nw Lake	Aitkin	B	9.4 ft	128,250 acres	42 ft
31	Ml-Thains Lake	Mille Lacs	B	5.3 ft	128,250 acres	42 ft
32	Ml-Ce Lake	Aitkin	B	9 ft	128,250 acres	42 ft
33	Ml-Se Lake	Mille Lacs	B	7.4 ft	128,250 acres	42 ft
34	Ml-Vineland Lake	Mille Lacs	B	7.8 ft	128,250 acres	42 ft
35	Ml-Malone Lake	Mille Lacs	B	5.7 ft	128,250 acres	42 ft
36	Ml-Garrison Lake	Aitkin	B	6.2 ft	128,250 acres	42 ft
37	Ml-Nshore Lake	Aitkin	B	7.4 ft	128,250 acres	42 ft
38	Ml-Ne Lake	Aitkin	B	8.6 ft	128,250 acres	42 ft
39	Horseshoe Lake	Isanti	B	3.5 ft	-	-
40	Crooked Lake	Anoka	B	7.1 ft	115 acres	26 ft
41	George Lake	Anoka	B	7.3 ft	489 acres	32 ft
42	Ham Lake	Anoka	B	8.9 ft	155 acres	22 ft
43	Hoffman Lake	Isanti	B	3.7 ft	-	-
44	Horseleg Lake	Isanti	B	3.6 ft	-	-
45	Ml-Seventeen Lake	Aitkin	C	6.2 ft	128,250 acres	42 ft
46	Florence Lake	Isanti	C	8.9 ft	135 acres	26 ft
47	Mille Lacs Lake	Mille Lacs	C	9 ft	128,250 acres	42 ft
48	Cedar Lake	Aitkin	C	8.8 ft	249 acres	18 ft
49	Blue Lake	Isanti	C	8.9 ft	296 acres	31 ft
50	Island Lake	Aitkin	C	7 ft	244 acres	25 ft
51	Minnewawa Lake	Aitkin	C	5 ft	2,351 acres	21 ft
52	Devil'S Lake	Kanabec	C	7.3 ft	59 acres	19 ft
53	Big Sandy Lake	Aitkin	C	4.5 ft	6,125 acres	84 ft
54	Coon Lake	Anoka	C	5.7 ft	1,481 acres	27 ft
55	Brown Lake	Aitkin	C	7 ft	68 acres	28 ft
56	Lewis Lake	Kanabec	C	7 ft	179 acres	48 ft
57	Rabbit Lake	Aitkin	C	9.3 ft	212 acres	51 ft
58	Pine Lake	Aitkin	C	6.5 ft	378 acres	28 ft
59	Waukenabo Lake	Aitkin	C	8 ft	668 acres	38 ft
60	Boot Lake	Anoka	C	6.7 ft	91 acres	19 ft
61	Ripple Lake	Aitkin	C	4.5 ft	630 acres	39 ft
62	Wakefield Lake	Aitkin	C	7.6 ft	164 acres	69 ft
63	Blackface Lake	Aitkin	C	8 ft	192 acres	18 ft
64	Grass Lake	Anoka	C	4.3 ft	-	-
65	Gun Lake	Aitkin	C	7 ft	712 acres	44 ft
66	Fannie Lake	Isanti	C	6.9 ft	360 acres	33 ft
67	Horseshoe Lake	Aitkin	C	3.5 ft	240 acres	12 ft
68	Elms Lake	Isanti	C	6.5 ft	52 acres	26 ft
69	Green Lake	Isanti	C	4.7 ft	833 acres	28 ft
70	Linwood Lake	Anoka	C	3.9 ft	572 acres	42 ft
71	Skogman Lake	Isanti	C	5.4 ft	228 acres	36 ft
72	Howard Lake	Anoka	C	3.3 ft	-	-
73	Amelia Lake	Anoka	C	3.9 ft	-	-
74	Golden Lake	Anoka	C	4.5 ft	58 acres	25 ft
75	Moore Lake	Anoka	C	3.9 ft	68 acres	5 ft
76	Lory Lake	Isanti	C	6 ft	222 acres	21 ft
77	Bass Lake	Aitkin	D	5 ft	57 acres	58 ft
78	Portage Lake	Aitkin	D	4.5 ft	372 acres	18 ft
79	Pickerel Lake	Anoka	D	5 ft	-	-
80	Hanging Kettle Lake	Aitkin	D	6.5 ft	318 acres	35 ft
81	Blind Lake	Aitkin	D	5.5 ft	304 acres	17 ft
82	Fleming Lake	Aitkin	D	5.2 ft	319 acres	15 ft
83	Wolf Lake	Aitkin	D	3.5 ft	173 acres	31 ft
84	Esquagamah Lake	Aitkin	D	5 ft	842 acres	31 ft
85	Flowage Lake	Aitkin	D	2.1 ft	-	-
86	Rat Lake	Aitkin	D	5.5 ft	431 acres	21 ft
87	Martin Lake	Anoka	D	2.5 ft	232 acres	20 ft
88	Elm Island Lake	Aitkin	D	4 ft	520 acres	25 ft
89	Pomroy Lake	Kanabec	D	5.5 ft	412 acres	11 ft
90	Loon Lake	Aitkin	D	4 ft	34 acres	21 ft
91	Centerville Lake	Anoka	D	3.9 ft	474 acres	19 ft
92	Mora Lake	Kanabec	D	5 ft	75 acres	24 ft
93	Porcupine Lake	Aitkin	D	1.5 ft	-	-
94	Shumway Lake	Aitkin	D	5 ft	74 acres	23 ft
95	George Watch Lake	Anoka	D	3.4 ft	-	-
96	Reshanau Lake	Anoka	D	3.1 ft	337 acres	16 ft
97	Twin Lake	Isanti	D	2.5 ft	-	-
98	Ann Lake	Kanabec	D	2 ft	653 acres	17 ft
99	Francis Lake	Isanti	D	2 ft	269 acres	7 ft
100	Davis Lake	Aitkin	D	1.6 ft	60 acres	21 ft