What lakes are in the St. Croix Watershed?

342 monitored lakes drain through the St. Croix Watershed, including Latoka Lake, Chippewa Lake, Cowdry Lake, and others. The watershed spans Minnesota and Wisconsin.

What is the cleanest lake in the St. Croix Watershed?

Latoka Lake in Douglas County is the highest-rated lake in the St. Croix 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 St. Croix Watershed corresponds to HUC8 07030005.

St. Croix Watershed

Minnesota and Wisconsin · 342 monitored lakes · 87 grade A · 89 grade B · HUC8 07030005

The St. Croix River basin straddling the Minnesota–Wisconsin border, one of the cleanest large-river watersheds in the Upper Midwest and a National Scenic Riverway.

Counties in this watershed

Pine, Chisago, Washington, Polk, Burnett, St. Croix, Douglas

Monitored Lakes (342)

#	Lake	County	Grade	Clarity	Area	Depth
1	Latoka Lake	Douglas	A	19 ft	-	-
2	Chippewa Lake	Douglas	A	15.1 ft	-	-
3	Cowdry Lake	Douglas	A	17 ft	-	-
4	Ida Lake	Douglas	A	16.5 ft	4.4K acres	-
5	Square Lake	Washington	A	17 ft	-	-
6	Miltona Lake	Douglas	A	18.8 ft	5.7K acres	-
7	Mina Lake	Douglas	A	16 ft	-	-
8	White Bear Lake	Washington	A	15 ft	-	-
9	Sturgeon Lake	Pine	A	16 ft	-	-
10	Whiskey Lake	Douglas	A	18.8 ft	-	-
11	Moon Lake	Douglas	A	20 ft	-	-
12	Stony Lake	Douglas	A	15.7 ft	-	-
13	Lottie Lake	Douglas	A	16.1 ft	-	-
14	Moses Lake	Douglas	A	16.2 ft	824 acres	-
15	Carlos Lake	Douglas	A	17.2 ft	183 acres	-
16	Big Carnelian Lake	Washington	A	15 ft	-	-
17	Stoney Lake	Douglas	A	19 ft	-	-
18	Little Carnelian Lake	Washington	A	21 ft	-	-
19	North Union Lake	Douglas	A	20.3 ft	-	-
20	Sturgeon Lake	Pine	A	16.8 ft	-	-
21	Jane Lake	Washington	A	15 ft	-	-
22	Clear Lake	Polk	A	15.5 ft	-	-
23	Long Lake	Burnett	A	21.5 ft	-	-
24	Pike Lake	Polk	A	-	-	-
25	North Twin Lake	Polk	A	-	639 acres	-
26	Deer Lake	Polk	A	16 ft	-	-
27	Ward Lake	Burnett	A	-	-	-
28	Sand Lake	Polk	A	20 ft	-	-
29	Viola Lake	Burnett	A	17 ft	-	-
30	Half Moon Lake	Polk	A	15.3 ft	-	-
31	Leader Lake	Douglas	A	15.3 ft	-	-
32	Whitefish Lake	Douglas	A	24.5 ft	-	-
33	South Twin Lake	Polk	A	-	639 acres	-
34	Whitefish Lake	Douglas	A	25.3 ft	-	-
35	Des Moines Lake	Burnett	A	19 ft	-	-
36	Sand Lake	Burnett	A	18.3 ft	-	-
37	Big Cedar Lake	Washington	A	16.4 ft	-	-
38	Middle Mckenzie Lake	Burnett	A	20 ft	-	-
39	Margaret Lake	Polk	A	15.5 ft	-	-
40	Bond Lake	Douglas	A	18 ft	-	-
41	Sand Lake	Burnett	A	19.5 ft	-	-
42	Lower Pine Lake	Polk	A	21 ft	-	-
43	Bardon Lake	Douglas	A	27 ft	-	-
44	Lk Superior 3.3 Mi E of Superior Lake	Douglas	A	-	-	-
45	Lk Superior .09 Mi N of Poplar Creek Mouth Lake	Douglas	A	-	-	-
46	Park Creek Pond	Douglas	A	-	11 acres	-
47	Cheney Lake	Douglas	A	-	-	-
48	Amy Bell Lake	Washington	A	-	-	-
49	Su22b Lake	Douglas	A	-	-	-
50	Maple Lake	Douglas	A	13.7 ft	-	-
51	Vermont Lake	Douglas	A	14.3 ft	-	-
52	Darling Lake	Douglas	A	14.7 ft	-	-
53	Union Lake	Polk	A	14.5 ft	-	-
54	Big Marine Lake	Washington	A	11.5 ft	-	-
55	Andrew Lake	Douglas	A	13.9 ft	-	-
56	Johnson Lake	Pine	A	11.3 ft	-	-
57	Brophy Lake	Douglas	A	14.4 ft	-	-
58	Burgen Lake	Douglas	A	12 ft	-	-
59	South Oscar Lake	Douglas	A	16.7 ft	-	-
60	Louise Lake	Douglas	A	14.5 ft	-	-
61	Blackwell Lake	Douglas	A	11.5 ft	-	-
62	Stauffer Lake	Chisago	A	14.1 ft	-	-
63	Big Cedar Lake-North Site-Near West Bend	Washington	A	11.8 ft	-	-
64	Big Cedar Lake-South Site-Near West Bend	Washington	A	12.6 ft	-	-
65	Bass Lake	St. Croix	A	10 ft	-	-
66	Big Sand Lake	Burnett	A	10.5 ft	-	-
67	Pipe Lake	Polk	A	12 ft	-	-
68	Deer Lake	Burnett	A	13 ft	-	-
69	Paulsen Lake	Polk	A	12 ft	-	-
70	Church Pine Lake	Polk	A	13 ft	-	-
71	Wind Lake	Polk	A	10 ft	-	-
72	Mud Hen Lake	Burnett	A	11 ft	-	-
73	Fish Lake	Burnett	A	14 ft	-	-
74	Minerva Lake	Burnett	A	10.5 ft	245 acres	-
75	Benoit Lake	Burnett	A	11.1 ft	-	-
76	Pine Lake	Polk	A	13 ft	-	-
77	Tabor Lake	Burnett	A	12 ft	-	-
78	Johnson Lake	Burnett	A	11.9 ft	-	-
79	Lake Five	Washington	A	12 ft	-	-
80	Red Lake	Douglas	A	12 ft	-	-
81	Rooney Lake	Burnett	A	11 ft	-	-
82	Big Bear Lake	Burnett	A	10 ft	-	-
83	Poquettes Lake	Burnett	A	14.8 ft	-	-
84	Antler Lake	Polk	A	13.4 ft	-	-
85	Lind Lake	Burnett	A	13.5 ft	-	-
86	Ham Lake	Burnett	A	12.7 ft	-	-
87	Little Cedar Lake	Washington	A	10.5 ft	-	-
88	Fish Lake	Chisago	B	9.7 ft	-	-
89	Blooms Lake	Chisago	B	6.9 ft	-	-
90	North Lindstrom Lake	Chisago	B	7.2 ft	-	-
91	Sunrise Lake	Chisago	B	7.7 ft	-	-
92	Lobster Lake	Douglas	B	13 ft	-	-
93	Sand Lake	Pine	B	10 ft	-	-
94	Crooked Lake	Douglas	B	14 ft	-	-
95	Turtle Lake	Douglas	B	10.5 ft	-	-
96	Mill Lake	Douglas	B	11 ft	-	-
97	Mary Lake	Douglas	B	9.8 ft	-	-
98	Irene Lake	Douglas	B	10.7 ft	-	-
99	Rush Lake	Pine	B	12.8 ft	-	-
100	Dago Lake	Pine	B	12.8 ft	-	-

Showing top 100 of 342 lakes by water quality grade.

All watersheds →All Minnesota lakes →All Wisconsin lakes →

Source: EPA National Aquatic Resource Surveys, 2026.