Erosion – the natural process by which the surface of the earth is worn away by the action of water, glaciers, winds, waves, etc.
Gully erosion – Severe erosion produced by running water in which trenches are cut to a depth greater than a foot and deep enough to cross with farm equipment
Land slip or calving erosion – when sloping soils slide downhill due to gravity and moisture or construction
Riparian zone – plant communities that are the interface between land and a stream or other body of water
Sheet or rill erosion – occurs when rain drops and surface water flows cause shallow stripping of soil (washboard effect); in sheet erosion, channels are not formed; in rill erosion, numerous small channels are cut, generally up to 30 centimeters deep
Tunnel erosion – an insidious form of erosion caused by excessive movement of water through a sub-surface soil, causing damage before surface evidence is noted; also called piping erosion
Wind erosion – movement of rock and sediment by the wind; also known as eolian (or Aeolian) erosion