Sheboygan County Lake Quality
Wisconsin, 6 lakes, average grade B (Good)
Only 6 lakes in Sheboygan County carry an active grade. The county-level summary is therefore representative of those specific lakes, not necessarily of every water body in the county. The county-wide average lands at B — solid water quality with most lakes carrying clear summer transparency and low-to-moderate phosphorus.
Most of the county's monitored lakes are shallow — under 50 feet — which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Little Elkhart Lake (B) is the cleanest in the county.
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Quick Answers for Sheboygan County
Planning a trip? Check special fishing regulations for Little Elkhart Lake, whether the fish are safe to eat, and the best times to fish — or browse the full Wisconsin regulations index.
Fishing in Sheboygan County
All Lakes in Sheboygan County
6 lakes6 graded lakes
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Max Depth | Access |
|---|---|---|---|---|---|---|---|---|
| 1 | BLittle Elkhart LakeSheboygan | B | 10 ft | 17.1 µg/L | No recent samples | No recent samples | 25 ft | ✓ Public |
| 2 | BLake EllenSheboygan | B | 9 ft | 12.4 µg/L | No recent samples | No recent samples | 42 ft | ✓ Public |
| 3 | BCrystal LakeSheboygan | B | 20 ft | 12.3 µg/L | No recent samples | No recent samples | No recent samples | ✓ Public |
| 4 | BRandom LakeSheboygan | B | 4.5 ft | 21.8 µg/L | No recent samples | No recent samples | 22.2 ft | ✓ Public |
| 5 | BElkhart LakeSheboygan | B | 10.5 ft | 13.2 µg/L | No recent samples | No recent samples | 119 ft | ✓ Public |
| 6 | DDewitt Road-Cedar Grove LakeSheboygan | D | No recent samples | 73.9 µg/L | No recent samples | No recent samples | No recent samples | Not recorded |
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Other Counties in Wisconsin
See how Sheboygan County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 39 states and 2 Canadian provinces.
Source: EPA National Aquatic Resource Surveys, 2026.