Physical Characteristics
| Surface Area (Acres) | 1,906 |
| Maximum Depth (ft) | 52 |
| Mean Depth (ft) | 21 |
| Shoreline (miles) | — |
| Bottom Composition | 30% sand, 30% gravel, 0% rock, 40% muck |
| Water Clarity — Secchi Depth (ft) | — |
| Trophic Status | — |
| Drainage Basin | DRAINAGE |
| Lake Class | lake |
| Public Access | — |
| Township | — |
| GPS Coordinates | 42.60450° N, 88.61080° W |
| WBIC (DNR ID) | 793600 |
Fish Species
6 species documented
AbundantCommonPresentRare
| Species | Abundance | Last Survey |
|---|---|---|
| Panfish | Abundant | — |
| Largemouth Bass | Present | — |
| Musky | Present | — |
| Northern Pike | Present | — |
| Smallmouth Bass | Present | — |
| Walleye | Present | — |
Boat Landings
3 landings
| Name | Type | Ramp | Trailers | Fee | ♿ |
|---|---|---|---|---|---|
| Blue Gill Road End | RAMP | — | 0 | No | No |
| Delavan Lake Boat Ramp | RAMP | — | Gr50 | Yes | No |
| Lake Delavan Carry-In | CARRY-IN | — | 0 | No | No |
Invasive Species
Invasive species have been documented in or near this lake. Please clean, drain, and dry all watercraft and equipment before leaving to prevent spread.
| Species | Status | First Detected |
|---|---|---|
| Banded Mystery Snail | Confirmed | — |
| Curly-Leaf Pondweed | Confirmed | — |
| Eurasian Water-Milfoil | Confirmed | — |
| Hybrid Eurasian / Northern Water-Milfoil | Confirmed | — |
| Ornamental water lilies (non-native Nymphaea sp.) | Confirmed | — |
| Pennywort | Confirmed | — |
| Phragmites (non-native) | Confirmed | — |
| Purple Loosestrife | Confirmed | — |
| Zebra Mussel | Confirmed | — |
Data sourced from Wisconsin DNR lake surveys. Last scraped: 4/30/2026.