Lakes / Iowa / Jefferson County
Lakes in Jefferson County, Iowa
4 lakes counted in Jefferson County - the largest is Reservoir Number Two at 48 acres.
4
Lakes Counted
48 acres
Largest - Reservoir Number Two
Jefferson County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Reservoir Number Two | Jefferson | 48 acres | - |
| 2 | Walton Lake | Jefferson | 42 acres | - |
| 3 | Horse Shoe Lake | Jefferson | 32 acres | - |
| 4 | Reservoir Number One | Jefferson | 25 acres | - |
Sources: USGS National Hydrography Dataset lake data; USGS. Verified October 30, 2026.