Current, official soil survey information is on Web Soil Survey. Web Soil Survey allows you to create custom reports by selecting a specific area of interest, such as a county or your own property.
Madison County Soil Associations
Madison County has five main soil associations:
| Soil Association | % of County | Description |
| Macksburg-Winterset | 17.5% | Nearly level and gently sloping, somewhat poorly drained and poorly drained soils that formed in loess on uplands |
| Shelby-Sharpsburg | 28% | Moderately sloping to steep, moderately well drained soils that formed in glacial till and loess on uplands |
| Sharpsburg-Lamoni | 25.5% | Nearly level to strongly sloping, moderately well drained and somewhat poorly drained soils that formed in loess and glacial till on uplands |
| Clinton-Lindley-Steep rock land-Clanton | 23% | Strongly sloping to very steep, moderately well drained soils that formed in loess and glacial till; and very slowly permeable, droughty soils that formed in shale on uplands |
| Zook-Wabash-Nodaway | 6% | Nearly level, moderately well drained to very poorly drained soils that formed in alluvium on bottom lands |
Historic Soil Surveys
