- Contact information
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For information on Lakes in Wisconsin, contact:
- DNR Lake
Division of Water
Bureau of Water Quality
- Clean Boats, Clean Waters Contacts
Delavan Lake -- Access Off State Hwy 50
Location:
Projects That Have Been Active in 2023-2025:
| Project | Boats Inspected 2023 | Boats Inspected 2024 | Boats Inspected 2025 | Details |
| TOWN OF DELAVAN: Delavan 2022 CBCW | 671 | 0 | 0 |
Details
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| TOWN OF DELAVAN: Delavan 2024 CBCW | 0 | 1009 | 0 |
Details
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| TOWN OF DELAVAN: Delavan 2025 CBCW | 0 | 0 | 826 |
Details
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Delavan Lake has the following aquatic invasive species:
Banded Mystery Snail, Curly-Leaf Pondweed, Eurasian Water-Milfoil, Hybrid Eurasian / Northern Water-Milfoil, Ornamental water lilies (non-native Nymphaea sp.), Pennywort, Phragmites (non-native), Purple Loosestrife, Zebra Mussel