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Artificial rills can be constructed as aesthetic water features.
Over time, rills expand and join together causing gullies.
Rills are formed by erosion. As soil erodes a thin channel is left, this channel fills with water. Gullies are formed by running water. An area where many rills have formed can turn into a gully.
Rills
Rills are a product of soil erosion by water, and can be defined as small incised channels in the soil that result from the actions of flowing water over an unvegetated or partially vegetated soil surface. They can be obliterated by tillage (ploughing over the rills). Where they are too large to be removed by tillage, they are referred to as gullies.
Rills
floodplain
Rills
A network of rills, gullies, streams, and rivers in an area.
rills
they are beaches
A rill is a much smaller channel. A gully was once a rill that got broader and deeper. There are another differences too: 1- Ratio of width to depth: In gully that ratio is approximately 1:1 but in rills width is greater than itsdepth. 2- In agricultural activities, rills can be removed but gullies can not. 3- In specific area, number of rills are higher than gullies. 4- sediment production of gullies is much higher than Rills.