What is gully in arid climate?

In an arid climate, a gully is a narrow and steep-sided channel or ravine that is formed by the rapid flow of rainwater. Gullies are typically found in areas with steep slopes, weak surface soils, and sparse vegetation. They are typically dry and barren most of the time, but they can become filled with water during heavy rains or flash floods. Gullies can vary in size and depth, from small incisions in the ground to massive canyons that are several hundred feet deep. They can have a major impact on the landscape, as they can erode large amounts of soil and sediment and alter the course of rivers and streams. They can also have negative effects on human settlements, as they can cause property damage, soil erosion, and loss of agricultural land.