Rills are shallow drainage channels that form as rainwater flows into depressions in the land. Over time, the depressions created by this type of soil erosion can widen during each rainstorm, which, in turn, can make the landscape even more prone to erosion.

When the banks of waterways wear away from vegetation removal, flooding, rapid water gain or loss, foot or watercraft traffic, and waves. 

As the name suggests, this soil erosion type is caused by water and implies topsoil removal after rainfall, snowmelt, floods, or poorly managed irrigation. 

Erosion that occurs when the thin upper portion of the soil is displaced, usually due to heavy rain or water runoff. During this process, desirable nutrients and organic matter are lost.