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This is known as a gully, which forms through erosion as water flows downhill, cutting into the soil and creating a channel. Gullies can become larger and more pronounced over time if not properly managed, leading to soil erosion and potential environmental challenges.
It's a gully. Rills are smaller ditches cut by running water, but can be plowed over. Once the ditch is so deep it can't be plowed over, it's a gully.
A canion.
Irrigation
Canyons are formed from running water. Very slowly but steadily, a river flowing through it carves it out.
it is called irrigation
A gully is a landform created by running water that has eroded the soil. Gullies resemble large ditches or small valleys.
A deep gully or ditch carved by running water is called a ravine. It is typically formed by the erosive forces of flowing water over a long period of time, creating a narrow and steep-sided channel in the landscape.
carrying irrigation water into fields through open ditches waste water
carrying irrigation water into fields through open ditches waste water
ditches filled with water so when crops needed to be watered, it can be easily dispersed. or it can catch water unneeded when it rained
I think canals always have water and ditches only sometimes do