Precipitation -- rain and snow cause flowing water in nature.
A network of rills, gullies, streams, and rivers in an area.
A network of rills, gullies, streams, and rivers in an area.
The network of rills, gullies, streams, and rivers in an area is often referred to as a watershed or river basin. This system of interconnected waterways ultimately drains into a common body of water, such as a lake or ocean.
Rills and gullies are both landforms formed by erosion caused by flowing water. The main difference is in their size and scale: rills are smaller and shallower, while gullies are larger and deeper. Gullies tend to be more pronounced and have steeper sides compared to rills.
Over time, rills expand and join together causing gullies.
Rills are small channels formed by flowing water on a slope, gullies are larger and deeper channels typically caused by erosion, and streams are larger bodies of moving water that can support aquatic life and flow towards a larger body of water like a river or ocean.
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.
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.
floodplain
Signs of soil erosion include exposed tree roots, gullies or channels forming in the landscape, sediment buildup in streams or rivers, and loss of topsoil resulting in poor crop growth. Other signs may include rills or small channels forming on sloped land, soil compaction, and reduced soil fertility.
Tiny rills enlarge to form gullies, which join to form a stream.