Lakes with Declining Water Quality: Multi-Year Trends (38 States)

Rank	Lake	County	State	Grade	Trend	Years Monitored
1	Round Lake	Itasca	MN	F	↓ Declining	2
2	Horseshoe Lake	Stearns	MN	F	↓ Declining	4
3	Long Lake	Stearns	MN	F	↓ Declining	6
4	Long Lake	Kandiyohi	MN	F	↓ Declining	4
5	Long Lake	Hennepin	MN	F	↓ Declining	6
6	Clear Lake	Meeker	MN	F	↓ Declining	6
7	Clear Lake	Waseca	MN	F	↓ Declining	5
8	Clear Lake	Jackson	MN	F	↓ Declining	2
9	Eagle Lake	Hennepin	MN	F	↓ Declining	6
10	Eagle Lake	Carver	MN	F	↓ Declining	6
11	Fish Lake	Wright	MN	F	↓ Declining	6
12	Washington Lake	Le Sueur	MN	F	↓ Declining	6
13	East Solomon Lake	Kandiyohi	MN	F	↓ Declining	5
14	Norway Lake	Kandiyohi	MN	F	↓ Declining	6
15	East Auburn Lake	Carver	MN	F	↓ Declining	6
16	Grace Lake	Carver	MN	F	↓ Declining	6
17	Bass Lake	Hennepin	MN	F	↓ Declining	6
18	Cedar Lake	Scott	MN	F	↓ Declining	4
19	Wassermann Lake	Carver	MN	F	↓ Declining	6
20	Thompson Lake	Dakota	MN	F	↓ Declining	2
21	Sandy Lake	Anoka	MN	F	↓ Declining	5
22	Jefferson Lake	Le Sueur	MN	F	↓ Declining	6
23	Silver Lake	Ramsey	MN	F	↓ Declining	6
24	Goose Lake	Ramsey	MN	F	↓ Declining	6
25	Goose Lake	Hennepin	MN	F	↓ Declining	2
26	Typo Lake	Anoka	MN	F	↓ Declining	6
27	Rock Lake	Wright	MN	F	↓ Declining	2
28	Como Lake	Ramsey	MN	F	↓ Declining	6
29	Crystal Lake	Hennepin	MN	F	↓ Declining	5
30	Crystal Lake	Blue Earth	MN	F	↓ Declining	4
31	Ann Lake	Kanabec	MN	F	↓ Declining	6
32	Knife Lake	Kanabec	MN	F	↓ Declining	6
33	Mink Lake	Wright	MN	F	↓ Declining	6
34	Red Rock Lake	Douglas	MN	F	↓ Declining	6
35	Elk Lake	Sherburne	MN	F	↓ Declining	6
36	Rush Lake	Sherburne	MN	F	↓ Declining	5
37	Schultz Lake	Kandiyohi	MN	F	↓ Declining	6
38	Alice Lake	Otter Tail	MN	F	↓ Declining	5
39	Smith Lake	Douglas	MN	F	↓ Declining	6
40	Wellner-Hageman Reservoir	Brown	MN	F	↓ Declining	4
41	Vadnais Lake	Ramsey	MN	F	↓ Declining	6
42	North Brown'S Lake	Stearns	MN	F	↓ Declining	6
43	Martha Lake	Wright	MN	F	↓ Declining	6
44	Caroline Lake	Wright	MN	F	↓ Declining	6
45	Victoria Lake	Hennepin	MN	F	↓ Declining	2
46	Gerhardt Lake	Dakota	MN	F	↓ Declining	6
47	Cedar Island Lake	Stearns	MN	F	↓ Declining	4
48	Sarah Lake	Hennepin	MN	F	↓ Declining	6
49	Circle Lake	Rice	MN	F	↓ Declining	6
50	Little Rock Lake	Benton	MN	F	↓ Declining	6

Improving Lakes →Cleanest Lakes →Worst Water Quality →Best Fishing →Largest Lakes →

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