a rill makes a gully a gully makes a stream a stream makes a river
A network of rills, gullies, streams, and rivers in an area.
A network of rills, gullies, streams, and rivers in an area.
A river system
Precipitation -- rain and snow cause flowing water in nature.
Over time, rills expand and join together causing gullies.
sheet erosion, rills, gullies
sheet erosion, rills, gullies
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.
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 are basically little gullies, which are little valleys of sorts; they're the smallest type of drainage "chute" if you will. Sheet erosion is where there's basically a flood moving down a hillside without any flow concentration in rills or gullies. Sheet erosion is typically much more efficient at removing material.
floodplain
Tiny rills enlarge to form gullies, which join to form a stream.