What lakes are in the Rum River Watershed?

310 monitored lakes drain through the Rum River Watershed, including Round Lake, Round Lake, Horseshoe Lake, and others. The watershed spans Minnesota.

What is the cleanest lake in the Rum River Watershed?

Round Lake in Aitkin County has the most favourable nutrient and algae readings in the Rum River Watershed, with about 14.5 ft of clarity.

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, Lakes & Water Quality

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 Aug 26, 2026

Counties in this watershed

Mille Lacs, Aitkin, Kanabec, Isanti, Anoka

Monitored Lakes (310)

#	Lake	County	Clarity	Area	Depth
1	Round Lake	Aitkin	14.5 ft	737 acres	125 ft
2	Round Lake	Anoka	8.9 ft	-	-
3	Horseshoe Lake	Isanti	3.5 ft	-	-
4	Clear Lake	Aitkin	15 ft	574 acres	24 ft
5	Spectacle Lake	Isanti	13.8 ft	246 acres	51.5 ft
6	Cedar Lake	Aitkin	11.1 ft	1,726 acres	105 ft
7	Big Pine Lake	Aitkin	17 ft	638 acres	78 ft
8	Upper Birch Lake	Isanti	10.8 ft	-	-
9	East Twin Lake	Anoka	10.7 ft	92 acres	68 ft
10	Howard Lake	Anoka	3.3 ft	-	-
11	Lower Birch Lake	Isanti	7.4 ft	-	-
12	Farm Island Lake	Aitkin	11.3 ft	2,005 acres	56 ft
13	Hoffman Lake	Isanti	3.7 ft	-	-
14	Horseleg Lake	Isanti	3.6 ft	-	-
15	Grass Lake	Anoka	4.3 ft	-	-
16	Netta Lake	Anoka	11.3 ft	-	-
17	Laddie Lake	Anoka	-	66 acres	4 ft
18	Outlet of Onamia Lake on the Rum River	Mille Lacs	-	1,044 acres	10 ft
19	Crooked Lake	Anoka	7.1 ft	115 acres	26 ft
20	George Lake	Anoka	7.3 ft	489 acres	32 ft
21	Skogman Lake	Isanti	5.4 ft	228 acres	36 ft
22	Minnewawa Lake	Aitkin	5 ft	2,351 acres	21 ft
23	Big Sandy Lake	Aitkin	4.5 ft	6,125 acres	84 ft
24	Coon Lake	Anoka	5.7 ft	1,481 acres	27 ft
25	Pine Lake	Aitkin	6.5 ft	378 acres	28 ft
26	Ham Lake	Anoka	8.9 ft	155 acres	22 ft
27	Boot Lake	Anoka	6.7 ft	91 acres	19 ft
28	Amelia Lake	Anoka	3.9 ft	-	-
29	Ripple Lake	Aitkin	4.5 ft	630 acres	39 ft
30	Moore Lake	Anoka	3.9 ft	68 acres	5 ft
31	Fannie Lake	Isanti	6.9 ft	360 acres	33 ft
32	Outlet of Ogechie Lake on the Rum River	Mille Lacs	-	409 acres	6 ft
33	Horseshoe Lake	Aitkin	3.5 ft	240 acres	12 ft
34	Twin Lake	Isanti	2.5 ft	-	-
35	Elms Lake	Isanti	6.5 ft	52 acres	26 ft
36	Blue Lake	Isanti	8.9 ft	296 acres	31 ft
37	Green Lake	Isanti	4.7 ft	833 acres	28 ft
38	Rice Lake	Anoka	2.6 ft	-	-
39	Linwood Lake	Anoka	3.9 ft	572 acres	42 ft
40	Martin Lake	Anoka	2.5 ft	232 acres	20 ft
41	Flowage Lake	Aitkin	2.1 ft	-	-
42	Golden Lake	Anoka	4.5 ft	58 acres	25 ft
43	Locke Lake	Anoka	3 ft	23 acres	-
44	Lory Lake	Isanti	6 ft	222 acres	21 ft
45	Reshanau Lake	Anoka	3.1 ft	337 acres	16 ft
46	Little Stanchfield Lake	Isanti	3.5 ft	146 acres	12 ft
47	Peltier Lake	Anoka	2.5 ft	552 acres	18 ft
48	Sandy Lake	Anoka	2.1 ft	-	-
49	Typo Lake	Anoka	1 ft	298 acres	6 ft
50	Ann Lake	Kanabec	2 ft	653 acres	17 ft
51	Knife Lake	Kanabec	2 ft	1,259 acres	15 ft
52	Francis Lake	Isanti	2 ft	269 acres	7 ft
53	Centerville Lake	Anoka	3.9 ft	474 acres	19 ft
54	South Stanchfield Lake	Isanti	2.5 ft	411 acres	17 ft
55	North Stanchfield Lake	Isanti	2.8 ft	157 acres	11 ft
56	Round Lake	Aitkin	14.5 ft	554 acres	27 ft
57	Round Lake	Aitkin	14.5 ft	634 acres	59 ft
58	Long Lake	Aitkin	10.8 ft	435 acres	116 ft
59	Fish Lake	Kanabec	2 ft	506 acres	8 ft
60	Bachelor Lake	Aitkin	14 ft	54 acres	47 ft
61	Florence Lake	Isanti	8.9 ft	135 acres	26 ft
62	Bass Lake	Aitkin	5 ft	57 acres	58 ft
63	Island Lake	Aitkin	7 ft	244 acres	25 ft
64	Portage Lake	Aitkin	4.5 ft	372 acres	18 ft
65	Mille Lacs Lake	Aitkin	10 ft	128,250 acres	42 ft
66	Cedar Lake	Aitkin	8.8 ft	249 acres	18 ft
67	Pickerel Lake	Anoka	5 ft	-	-
68	Devil'S Lake	Kanabec	7.3 ft	59 acres	19 ft
69	Lewis Lake	Kanabec	7 ft	179 acres	48 ft
70	Silver Lake	Mille Lacs	1 ft	-	-
71	Blind Lake	Aitkin	5.5 ft	304 acres	17 ft
72	Wilkins Lake	Aitkin	13 ft	349 acres	39 ft
73	Brown Lake	Aitkin	7 ft	68 acres	28 ft
74	Rabbit Lake	Aitkin	9.3 ft	212 acres	51 ft
75	Fleming Lake	Aitkin	5.2 ft	319 acres	15 ft
76	Hanging Kettle Lake	Aitkin	6.5 ft	318 acres	35 ft
77	Wolf Lake	Aitkin	3.5 ft	173 acres	31 ft
78	Vanduse Lake	Aitkin	11 ft	240 acres	27 ft
79	Hammal Lake	Aitkin	12.5 ft	376 acres	44 ft
80	Waukenabo Lake	Aitkin	8 ft	668 acres	38 ft
81	Esquagamah Lake	Aitkin	5 ft	842 acres	31 ft
82	Rat Lake	Aitkin	5.5 ft	431 acres	21 ft
83	Lone Lake	Aitkin	22.5 ft	433 acres	60 ft
84	Elm Island Lake	Aitkin	4 ft	520 acres	25 ft
85	Pomroy Lake	Kanabec	5.5 ft	412 acres	11 ft
86	Loon Lake	Aitkin	4 ft	34 acres	21 ft
87	Sugar Lake	Aitkin	14.5 ft	416 acres	45 ft
88	Wakefield Lake	Aitkin	7.6 ft	164 acres	69 ft
89	Steamboat Lake	Aitkin	2.3 ft	60 acres	21 ft
90	Spirit Lake	Aitkin	11 ft	11 acres	46 ft
91	Dam Lake	Aitkin	11.3 ft	598 acres	48 ft
92	Blackface Lake	Aitkin	8 ft	192 acres	18 ft
93	Gun Lake	Aitkin	7 ft	712 acres	44 ft
94	Landgren Lake	Aitkin	13 ft	54 acres	47 ft
95	Mora Lake	Kanabec	5 ft	75 acres	24 ft
96	Porcupine Lake	Aitkin	1.5 ft	-	-
97	Nord Lake	Aitkin	10.5 ft	418 acres	29 ft
98	Davis Lake	Aitkin	1.6 ft	60 acres	21 ft
99	Marshan Lake	Anoka	1.2 ft	-	-
100	Krans Lake	Isanti	1.5 ft	35 acres	31 ft