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What is rill erosion Class 10?

What is rill erosion Class 10?

Rill erosion is a form of water erosion in which the erosion takes places through numerous narrow and more or not so straight channels called streamlets, or head cuts. Rill is the most common form of erosion, which you can also observe during heavy rain.

What is rill and gully erosion?

Rill erosion is caused by slow movement of water along small channels on bare land with less vegetative cover. Gully erosion creates a deep channels that the surface runoff is further enhanced. The water movement is faster, creating a deeper channels.

What is rill erosion in agriculture?

Rill erosion results from the concentration of surface water (sheet erosion) into deeper, faster-flowing channels. As the flow becomes deeper the velocity increases detaching soil particles and scouring channels up to 30cm deep. Rill erosion represents the intermediate process between sheet and gully erosion.

What is gully erosion?

Gully erosion occurs when water is channelled across unprotected land and washes away the soil along the drainage lines. Excessive clearing, inappropriate land use and compaction of the soil caused by grazing often means the soil is left exposed and unable to absorb excess water.

How is rill erosion caused?

Rill erosion occurs when runoff water forms small channels as it concentrates down a slope. These rills can be up to 0.3m deep. If they become any deeper than 0.3m they are referred to as gully erosion.

How do you fix gully erosion?

Treatment of classical gully erosion involves protect- ing the headcut from further erosion, diverting over- land flows away from the gully, changing land use, grading and filling in the gully, stabilizing with trees and vegetation, or by constructing a small earthen dam to impound water in the gullied area.

What do you need to know about rill erosion?

Rill erosion is one type of water erosion, but it is part of a series of events that begin with raindrops falling on bare soil. Rill erosion, which is when water and particles pick up speed and dig small, parallel channels in the soil.

What causes rills to form in the ground?

The rills or small channels (often only 30cm deep) are caused when water running across the surface of the ground gathers in a natural depression in the soil, and erosion is concentrated as the water flows through the depression.

What causes Gully, Rill, and stream erosion?

Water action due to rain erodes the soil and causes activities like gully, rill, and stream erosion leading to the downstream effects of flooding and sedimentation. The severity of water erosion is influenced by slope, soil type, soil water storage capacity, nature of the underlying rock, vegetation cover, and rainfall intensity and period.

Rill erosion is the detachment of soil particles by surface flow, and it occurs in a series of rills, which are small, parallel channels a few tens of millimeters wide. Terraces are spaced to avoid excessive rill erosion. Equations for terrace spacing have been developed based on field experience.