- Contact information
-
For information on Lakes in Wisconsin, contact:
- DNR Lake
Division of Water
Bureau of Water Quality
- Clean Boats, Clean Waters Contacts
Rock Lake -- Sandy Beach Launch
Location:
Projects That Have Been Active in 2024-2026:
| Project | Boats Inspected 2024 | Boats Inspected 2025 | Boats Inspected 2026 | Details |
| JEFFERSON COUNTY LCD: Jefferson 2024 CBCW | 219 | 0 | 0 |
Details
|
| JEFFERSON COUNTY LCD: Jefferson 2025 CBCW | 0 | 636 | 0 |
Details
|
| JEFFERSON COUNTY LCD: Jefferson 2026 CBCW | 0 | 0 | 655 |
Details
|
| LAKE MILLS: Lake Mills 2023 CBCW | 771 | 0 | 0 |
Details
|
Rock Lake has the following aquatic invasive species:
Banded Mystery Snail, Chinese Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Hybrid Eurasian / Northern Water-Milfoil, Rusty Crayfish, Spiny Naiad, Starry Stonewort, Yellow Iris, Zebra Mussel