Highly dispersible soils are extremely erodable and are associated with high exchangeable sodium and low soluble salt concentrations. Artificial flocculation is required to help the settling process. Soil dispersability can be determined by laboratory tests. Earth Bank and Channel a bank is a ridge or embankment of compacted earth. A channel is an excavated earth drainage ditch or path used to intercept and direct runoff to a desired location.
Erosion is a natural process.
Rain or wind detaches a soil particle and provides energy to move the particle. Rain Drop Impact occurs when a raindrop strikes an unprotected soil surface dislodging surface soil particles which may then be transported by the water to another location. Sheet Erosion occurs when a sheet of soil particles is removed while water flows uniformly over the surface. Rill Erosion refers to troughs, called rills, formed where sheet erosion becomes concentrated due to the variation in surface contours or erodibility. Gully Erosion occurs when rills develop to greater depths.