What lakes are in the Sheboygan-Manitowoc?

36 monitored lakes drain through the Sheboygan-Manitowoc, including Crystal Lake, Cedar Lake, Little Elkhart 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 · 8 grade A · 10 grade B · HUC8 04030103

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

Reviewed by LakeQuality Editorial Team · Updated Jul 20, 2026

Counties in this watershed

Sheboygan, Manitowoc, Calumet, Fond du Lac

Monitored Lakes (36)

#	Lake	County	Grade	Clarity	Area	Depth
1	Crystal Lake	Sheboygan	A	20 ft	-	-
2	Cedar Lake	Manitowoc	A	10.2 ft	-	-
3	Little Elkhart Lake	Sheboygan	A	10 ft	52 acres	25 ft
4	Forest Lake	Fond du Lac	A	14 ft	51 acres	32 ft
5	Kettle Moraine Lake	Fond du Lac	A	11 ft	209 acres	30 ft
6	Elkhart Lake	Sheboygan	A	10.5 ft	292 acres	119 ft
7	Tuma Lake	Manitowoc	A	10 ft	14 acres	36 ft
8	De Neveu Lake	Fond du Lac	A	11 ft	80 acres	67 ft
9	Long Lake	Fond du Lac	B	9.1 ft	423 acres	47 ft
10	Wilke Lake	Manitowoc	B	7 ft	93 acres	21 ft
11	Lake Ellen	Sheboygan	B	9 ft	112 acres	42 ft
12	Spring Lake	Manitowoc	B	8 ft	9 acres	23 ft
13	Pigeon Lake	Manitowoc	B	9.3 ft	80 acres	62 ft
14	Little Pigeon Lake	Manitowoc	B	-	8 acres	14.5 ft
15	Auburn Lake	Fond du Lac	B	7.6 ft	90 acres	29 ft
16	Shoe Lake	Manitowoc	B	7 ft	10 acres	34 ft
17	English Lake	Manitowoc	B	7.5 ft	48 acres	85 ft
18	Kasbaum Lake	Manitowoc	B	9.7 ft	6 acres	68 ft
19	Random Lake	Sheboygan	C	4.5 ft	212 acres	22.2 ft
20	Wolf Lake	Fond du Lac	C	5 ft	75 acres	47 ft
21	Hartlaub Lake	Manitowoc	C	5 ft	37 acres	60 ft
22	Horseshoe Lake	Manitowoc	C	6.5 ft	21 acres	54 ft
23	Harpt Lake	Manitowoc	C	3.5 ft	32 acres	54 ft
24	Mauthe Lake	Fond du Lac	C	6 ft	70 acres	23 ft
25	Bernice Lake	Fond du Lac	D	6.5 ft	32 acres	11 ft
26	Bullhead Lake	Manitowoc	D	4.5 ft	70 acres	40 ft
27	Gass Lake	Manitowoc	D	6 ft	6 acres	24 ft
28	Dewitt Road-Cedar Grove Lake	Sheboygan	D	-	-	-
29	Weyers Lake	Manitowoc	D	6 ft	6 acres	32 ft
30	Carstens Lake	Manitowoc	D	5.2 ft	-	-
31	Silver Lake	Manitowoc	F	-	-	-
32	Long Lake	Manitowoc	F	1.9 ft	119 acres	38 ft
33	Beckers Lake	Calumet	F	1.5 ft	35 acres	52.5 ft
34	Chilton Millpond	Calumet	F	2.9 ft	11 acres	7 ft
35	Dickman Lake	Fond du Lac	F	3 ft	6 acres	12 ft
36	Giltners Lake	Fond du Lac	F	-	16 acres	13 ft

Other Watersheds

St. Croix Watershed

Minnesota & Wisconsin · HUC8 07030005

Wisconsin River Watershed

Wisconsin · HUC8 07070005

Wolf River Watershed

Wisconsin · HUC8 04030202

Chippewa River Watershed

Wisconsin · HUC8 07050001

Lake Superior Basin (MN+WI)

Minnesota & Wisconsin · HUC8 04010102

Lower Fox-Wolf (Lake Winnebago Pool)

Wisconsin · HUC8 04030204

All watersheds →All Wisconsin lakes →

Source: EPA National Aquatic Resource Surveys, 2026.