Key facts:
  • The true extent of tile drainage is largely unknown and available tile drainage estimates are inconsistent.
  • Compared to other states, Wisconsin has a relatively small amount of tile-drained land. Roughly 8% of cropland in Wisconsin is tile drained.
  • Questions remain about whether or not the amount of tile-drained land is increasing in Wisconsin.
  • Eastern Wisconsin soils that drain into the Lake Michigan Basin represent the area of Wisconsin with the most extensive tile drainage.

This publication is available online at the UW-Extension Learning Store here.