EXPLORE HOW IT WORKS

Erosion control: slope and cover

Keep the same rainfall, then change the slope and soil cover. See how exposed soil can move.

1Rain on the surface
2Soil cover
3Soil carried downhill

Rain reaches exposed sandy soil. Loose grains travel with the surface flow.

What to notice.

Slope gives runoff a direction. Exposed soil can detach and travel with it. Plant cover and mulch can protect the surface in different ways. This comparison explains the mechanism; it does not predict soil loss or select an erosion-control treatment.

Educational illustration. Geometry and motion are simplified, and slopes are exaggerated so the change is visible. It does not predict performance at your property or specify equipment, dimensions or repairs.