What Does Rill Erosion Mean?
Rill erosion is a type of erosion that results in small, yet well defined streams. It happens when water from rainfall does not soak into the soil, but runs across it instead. The rills or small channels (often only 30cm deep) are caused when water running across the surface of the ground gathers in a natural depression in the soil, and erosion is concentrated as the water flows through the depression.