What lakes are in the Sheboygan-Manitowoc?

36 monitored lakes drain through the Sheboygan-Manitowoc, including Crystal Lake, Mi32 Lake, Cedar Lake, and others. The watershed spans Wisconsin.

What is the cleanest lake in the Sheboygan-Manitowoc?

Crystal Lake in Sheboygan County is the highest-rated lake in the Sheboygan-Manitowoc 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 Sheboygan-Manitowoc corresponds to HUC8 04030103.

Sheboygan-Manitowoc

Wisconsin · 36 monitored lakes · 9 grade A · 10 grade B · HUC8 04030103

Lake Michigan tributaries draining east-central Wisconsin into Lake Michigan via Sheboygan and Manitowoc Rivers.

Counties in this watershed

Sheboygan, Manitowoc, Calumet, Fond du Lac

Monitored Lakes (36)

#	Lake	County	Grade	Clarity	Area	Depth
1	Crystal Lake	Sheboygan	A	19.9 ft	-	-
2	Mi32 Lake	Manitowoc	A	49.2 ft	-	-
3	Cedar Lake	Manitowoc	A	10.2 ft	-	-
4	Little Elkhart Lake	Sheboygan	A	10 ft	-	-
5	Forest Lake	Fond du Lac	A	14 ft	-	-
6	Kettle Moraine Lake	Fond du Lac	A	11 ft	-	-
7	Elkhart Lake	Sheboygan	A	10.5 ft	-	-
8	Tuma Lake	Manitowoc	A	10 ft	-	-
9	De Neveu Lake	Fond du Lac	A	11 ft	-	-
10	Long Lake	Fond du Lac	B	9.1 ft	427 acres	-
11	Wilke Lake	Manitowoc	B	7 ft	-	-
12	Lake Ellen	Sheboygan	B	9 ft	-	-
13	Spring Lake	Manitowoc	B	8 ft	-	-
14	Pigeon Lake	Manitowoc	B	9.3 ft	-	-
15	Little Pigeon Lake	Manitowoc	B	-	-	-
16	Auburn Lake	Fond du Lac	B	7.6 ft	-	-
17	Shoe Lake	Manitowoc	B	7 ft	-	-
18	English Lake	Manitowoc	B	7.5 ft	-	-
19	Kasbaum Lake	Manitowoc	B	9.7 ft	-	-
20	Random Lake	Sheboygan	C	4.5 ft	-	-
21	Wolf Lake	Fond du Lac	C	5 ft	-	-
22	Hartlaub Lake	Manitowoc	C	5 ft	-	-
23	Horseshoe Lake	Manitowoc	C	6.5 ft	-	-
24	Harpt Lake	Manitowoc	C	3.5 ft	-	-
25	Mauthe Lake	Fond du Lac	C	6 ft	-	-
26	Bernice Lake	Fond du Lac	D	6.5 ft	35 acres	-
27	Bullhead Lake	Manitowoc	D	4.3 ft	-	-
28	Gass Lake	Manitowoc	D	6 ft	-	-
29	Dewitt Road-Cedar Grove Lake	Sheboygan	D	-	-	-
30	Weyers Lake	Manitowoc	D	6 ft	-	-
31	Carstens Lake	Manitowoc	D	5.2 ft	-	-
32	Long Lake	Manitowoc	F	1.9 ft	-	-
33	Beckers Lake	Calumet	F	1.5 ft	-	-
34	Chilton Millpond	Calumet	F	2.9 ft	46 acres	-
35	Dickman Lake	Fond du Lac	F	3 ft	-	-
36	Giltners Lake	Fond du Lac	F	-	-	-

All watersheds →All Wisconsin lakes →

Source: EPA National Aquatic Resource Surveys, 2026.