Washington County Lake Quality

Wisconsin — 68 lakes, average grade A (Excellent)

All Lakes in Washington County

Rank	Lake	Grade	Clarity	Phosphorus
1	Silver Lake -	A	11.25m	11.8 µg/L
2	Pewaukee Lake -	A	6.5m	17.6 µg/L
3	Lac la Belle - Se Basin Deep Hole - Site 3 Lake	A	7.75m	—
4	Hunters Lake - Upper	A	11.75m	15.9 µg/L
5	Lake Keesus - West	A	7.96m	15.8 µg/L
6	Nagawicka Lake -	A	7.06m	13.5 µg/L
7	Pretty Lake -	A	12m	12.2 µg/L
8	Upper Nemahbin Lake -	A	13m	13.7 µg/L
9	Lower Nashotah Lake -	A	9.25m	11.3 µg/L
10	Ottawa Lake -	A	13m	15 µg/L
11	Golden Lake -	A	13m	14.1 µg/L
12	Moose Lake -	A	16m	—
13	Pine Lake -	A	25m	11.9 µg/L
14	Upper Genesee Lake -	A	16.5m	—
15	Okauchee Lake -	A	11m	17.1 µg/L
16	Spring Lake -	A	—	12.2 µg/L
17	Oconomowoc Lake -	A	13m	11.7 µg/L
18	Ashippun Lake -	A	10m	12.8 µg/L
19	Crooked Lake -	A	7.75m	16.5 µg/L
20	Lac la Belle - Deep Hole-Site 1 Lake	A	5m	14.7 µg/L
21	Fowler Lake -	A	15m	15.6 µg/L
22	Pewaukee Lake	A	7m	—
23	Lower Nemahbin Lake -	A	11m	11 µg/L
24	Lower Phantom Lake -	A	5.87m	15.7 µg/L
25	Oconomowoc Lake Site #2 - Deep Hole Northeast	A	12m	13.8 µg/L
26	Lower Nemahbin - Deep Hole West Lake	A	11.5m	—
27	Lower Nashotah Lake - Lower Nashotah Lake	A	8.25m	—
28	Lapham Peak Pond	A	5m	—
29	Moose Lake - Moose Lake	A	17.25m	—
30	Fowler Lake - Fowler Lake	A	13m	—
31	Hunters Lake - Deep Hole-Lower	A	9.5m	—
32	Hunters Lake - Lower Basin	A	8m	—
33	Little Muskego Lake -	A	15.5m	—
34	North Lake West Basin -	A	9.5m	—
35	Okauchee Lake-Site No. 4-at Okauchee	A	—	17.5 µg/L
36	Okauchee Lake-Site No. 3-at Okauchee	A	—	17 µg/L
37	Okauchee Lake Site #3 - Icehouse	A	—	17.5 µg/L
38	North Lake - Site 3	A	—	19.1 µg/L
39	North Lake - Site 2	A	—	15.3 µg/L
40	North Lake - Site 5	A	—	19.6 µg/L
41	North Lake - Site 4	A	—	16.4 µg/L
42	North Lake - Site 7	A	—	19 µg/L
43	North Lake - Site 1	A	—	15.5 µg/L
44	Oconomowoc Lake 2	A	4.45m	15.5 µg/L
45	Oconomowoc Lake No. 1	A	4.2m	16 µg/L
46	Okauchee Lake	A	3.45m	18 µg/L
47	Pewaukee Lake - East	A	5m	23.8 µg/L
48	School Section Lake -	A	5.09m	26.2 µg/L
49	Denoon Lake -	A	9m	22.4 µg/L
50	North Lake -	A	9m	20.1 µg/L
51	Eagle Spring Lake -	A	4.47m	17.9 µg/L
52	Lac la Belle - Nw Basin-Site 2 Lake	B	4.38m	—
53	Lac la Belle, Waukesha County, Wi, Usa Lake	B	3.09m	—
54	Upper Nemahbin Lake, Waukesha County, Wi, Usa	B	4.27m	—
55	Henrietta Lake -	B	4.5m	—
56	Okauchee Lake-Site No. 1-Near Okauchee	B	—	27.5 µg/L
57	North Lake - Site 6	B	—	20.2 µg/L
58	Okauchee Lake-Site No. 2-at Okauchee	B	1.8m	18 µg/L
59	Okauchee Lake Site #2 - Lower Site	B	2m	18.4 µg/L
60	Okauchee Lake Deep Hole Usgs	B	2.3m	23.7 µg/L
61	Ocauchee L Lake	B	2m	17.5 µg/L
62	Okauchee Lake Site #4 - Crazy Man'S Island	B	1.4m	16.2 µg/L
63	Upper Kelly Lake -	C	2.75m	—
64	Okauchee Lake Site #1 - Cranes Nest	C	2m	26.6 µg/L
65	Muskego Lake -	C	—	59.4 µg/L
66	Lake Denoon - Sw	C	—	55.6 µg/L
67	Lake Denoon, Waukesha County, Wi, Usa	F	0.46m	—
68	Lower Kelly Lake -	F	—	156 µg/L