Lakes / Wisconsin / Jefferson County
Lakes in Jefferson County, Wisconsin
11 lakes counted in Jefferson County - the largest is Lake Koshkonong at 10,595 acres.
11
Lakes Counted
10,595 acres
Largest - Lake Koshkonong
60 ft
Deepest - Rock Lake
Jefferson County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Koshkonong | Jefferson, Dane, Rock | 10,595 acres | 7 ft |
| 2 | Rock Lake | Jefferson | 1,365 acres | 60 ft |
| 3 | Rome Mill Pond | Jefferson | 448 acres | 7 ft |
| 4 | Lake Ripley | Jefferson | 420 acres | 44 ft |
| 5 | Red Cedar Lake | Jefferson | 344 acres | 6 ft |
| 6 | Golden Lake | Waukesha, Jefferson | 288 acres | 44 ft |
| 7 | Mud Lake | Jefferson | 185 acres | None ft |
| 8 | Goose Lake | Jefferson | 139 acres | 4 ft |
| 9 | Blue Spring Lake | Jefferson | 136 acres | 27 ft |
| 10 | Hope Lake | Jefferson | 108 acres | 24 ft |
| 11 | Spring Lake | Jefferson | 105 acres | 11 ft |
Sources: Wisconsin DNR lake data; USGS. Verified October 28, 2026.