Lakes / Iowa / Buchanan County
Lakes in Buchanan County, Iowa
1 lakes counted in Buchanan County - the largest is Lake Oelwein at 42 acres.
1
Lakes Counted
42 acres
Largest - Lake Oelwein
Buchanan County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Oelwein | Buchanan | 42 acres | - |
Sources: USGS National Hydrography Dataset lake data; USGS. Verified October 30, 2026.