What lakes are in the Rum River Watershed?

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

What is the cleanest lake in the Rum River Watershed?

Round 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 · 31 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.

Counties in this watershed

Mille Lacs, Aitkin, Kanabec, Isanti, Anoka

Monitored Lakes (114)

#	Lake	County	Grade	Clarity	Area	Depth
1	Round Lake	Aitkin	A	15.3 ft	-	-
2	Clear Lake	Aitkin	A	16 ft	-	-
3	Big Pine Lake	Aitkin	A	16.5 ft	-	-
4	Lone Lake	Aitkin	A	22.7 ft	-	-
5	Sugar Lake	Aitkin	A	15.5 ft	-	-
6	Lower Birch Lake	Isanti	A	10.8 ft	-	-
7	Round Lake	Aitkin	A	14.5 ft	-	-
8	Spectacle Lake	Isanti	A	13.8 ft	-	-
9	Cedar Lake	Aitkin	A	11 ft	-	-
10	Upper Birch Lake	Isanti	A	10.8 ft	-	-
11	Netta Lake	Anoka	A	11.3 ft	-	-
12	Nord Lake	Aitkin	A	10.5 ft	-	-
13	Outlet of Onamia Lake on the Rum River	Mille Lacs	A	-	-	-
14	Outlet of Ogechie Lake on the Rum River	Mille Lacs	A	-	410 acres	-
15	East Twin Lake	Anoka	B	10.7 ft	-	-
16	Round Lake	Aitkin	B	14.5 ft	-	-
17	Round Lake	Anoka	B	8.2 ft	-	-
18	Horseshoe Lake	Isanti	B	3.6 ft	-	-
19	Long Lake	Aitkin	B	10.8 ft	-	-
20	Bachelor Lake	Aitkin	B	14.5 ft	-	-
21	Mille Lacs Lake	Aitkin	B	10.5 ft	-	-
22	Wilkins Lake	Aitkin	B	13 ft	-	-
23	Vanduse Lake	Aitkin	B	11 ft	-	-
24	Hammal Lake	Aitkin	B	12 ft	-	-
25	Farm Island Lake	Aitkin	B	10.5 ft	-	-
26	Hoffman Lake	Isanti	B	4.1 ft	-	-
27	Spirit Lake	Aitkin	B	11 ft	-	-
28	Dam Lake	Aitkin	B	12 ft	-	-
29	Horseleg Lake	Isanti	B	3.7 ft	-	-
30	Landgren Lake	Aitkin	B	13 ft	-	-
31	Laddie Lake	Anoka	B	-	-	-
32	Ml Lake	Mille Lacs	B	7.4 ft	-	-
33	Ml Lake	Mille Lacs	B	7.8 ft	-	-
34	Ml-Peterson Lake	Mille Lacs	B	7.4 ft	-	-
35	Ml-Nw Lake	Aitkin	B	9.4 ft	-	-
36	Ml-Thains Lake	Mille Lacs	B	5.3 ft	-	-
37	Ml-Ce Lake	Aitkin	B	9 ft	-	-
38	Ml-Se Lake	Mille Lacs	B	7.4 ft	-	-
39	Ml-Vineland Lake	Mille Lacs	B	7.8 ft	-	-
40	Ml-Malone Lake	Mille Lacs	B	5.7 ft	-	-
41	Ml-Garrison Lake	Aitkin	B	6.2 ft	-	-
42	Ml-Nshore Lake	Aitkin	B	7.4 ft	-	-
43	Ml-Ne Lake	Aitkin	B	8.6 ft	-	-
44	Crooked Lake	Anoka	B	7.4 ft	-	-
45	Ham Lake	Anoka	B	8.9 ft	-	-
46	George Lake	Anoka	C	7.3 ft	-	-
47	Coon Lake	Anoka	C	5.6 ft	-	-
48	Ml-Ditch 36 Lake	Aitkin	C	5.7 ft	-	-
49	Ml-Seventeen Lake	Aitkin	C	6.2 ft	-	-
50	Fannie Lake	Isanti	C	7 ft	-	-
51	Elms Lake	Isanti	C	6.9 ft	-	-
52	Blue Lake	Isanti	C	8.9 ft	-	-
53	Florence Lake	Isanti	C	9 ft	-	-
54	Mille Lacs Lake	Mille Lacs	C	9 ft	-	-
55	Cedar Lake	Aitkin	C	8.8 ft	-	-
56	Devil'S Lake	Kanabec	C	7.3 ft	-	-
57	Lewis Lake	Kanabec	C	7 ft	-	-
58	Big Sandy Lake	Aitkin	C	4.5 ft	-	-
59	Brown Lake	Aitkin	C	7 ft	-	-
60	Rabbit Lake	Aitkin	C	9.7 ft	-	-
61	Waukenabo Lake	Aitkin	C	8 ft	650 acres	-
62	Boot Lake	Anoka	C	6.7 ft	-	-
63	Wakefield Lake	Aitkin	C	7.6 ft	-	-
64	Blackface Lake	Aitkin	C	8 ft	-	-
65	Grass Lake	Anoka	C	3.9 ft	-	-
66	Gun Lake	Aitkin	C	7 ft	-	-
67	Green Lake	Isanti	C	5.1 ft	-	-
68	Linwood Lake	Anoka	C	3.9 ft	-	-
69	Skogman Lake	Isanti	C	5.4 ft	-	-
70	Pine Lake	Aitkin	C	6.6 ft	-	-
71	Lory Lake	Isanti	C	6 ft	341 acres	-
72	Howard Lake	Anoka	C	2.8 ft	-	-
73	Amelia Lake	Anoka	C	3.9 ft	-	-
74	Golden Lake	Anoka	C	5 ft	-	-
75	Moore Lake	Anoka	C	3.9 ft	-	-
76	Horseshoe Lake	Aitkin	D	3.5 ft	-	-
77	Bass Lake	Aitkin	D	5 ft	-	-
78	Portage Lake	Aitkin	D	4.5 ft	-	-
79	Pickerel Lake	Anoka	D	5 ft	-	-
80	Blind Lake	Aitkin	D	5.5 ft	-	-
81	Minnewawa Lake	Aitkin	D	5.2 ft	-	-
82	Fleming Lake	Aitkin	D	5.2 ft	-	-
83	Hanging Kettle Lake	Aitkin	D	6.3 ft	320 acres	-
84	Francis Lake	Isanti	D	2 ft	-	-
85	Wolf Lake	Aitkin	D	3.5 ft	-	-
86	Martin Lake	Anoka	D	2.5 ft	-	-
87	Esquagamah Lake	Aitkin	D	5 ft	-	-
88	Flowage Lake	Aitkin	D	2.1 ft	-	-
89	Rat Lake	Aitkin	D	5 ft	-	-
90	Elm Island Lake	Aitkin	D	4 ft	-	-
91	Pomroy Lake	Kanabec	D	5.5 ft	-	-
92	Loon Lake	Aitkin	D	4 ft	-	-
93	Ripple Lake	Aitkin	D	4.5 ft	600 acres	-
94	Mora Lake	Kanabec	D	5 ft	-	-
95	Porcupine Lake	Aitkin	D	1.5 ft	-	-
96	Shumway Lake	Aitkin	D	5 ft	-	-
97	Twin Lake	Isanti	D	2.6 ft	-	-
98	Little Stanchfield Lake	Isanti	D	3.5 ft	-	-
99	Sandy Lake	Anoka	D	2.5 ft	-	-
100	Ann Lake	Kanabec	D	2 ft	363 acres	-

Showing top 100 of 114 lakes by water quality grade.

All watersheds →All Minnesota lakes →

Source: EPA National Aquatic Resource Surveys, 2026.