How can gully erosion be controlled

What is a gully?

Surface runoff

Surface runoff due to heavy rainfall on a bare ground leads to the removal of soil, rock, and other material from a location. These materials then transport them to another location in a process known as erosion. Physical erosion involves breaking down soil into clastic sediments, while chemical erosion involves removing soil and rocks by first dissolving them in a solvent. Although soil erosion is a natural process, human activities such as deforestation, unsustainable agriculture, and cleaning up vegetation increase the rate of erosion by 10-40 times. Surface runoff produces four main types of erosion, including splash, groove, sheet, and gully erosion. Gully erosion occurs when water flows rapidly into the canal after heavy rainfall and removes the soil at considerable depths.

What is a gully?

Gutters are landforms that are created by superficial runoff that penetrates deep into the ground, especially on slopes. Gullies are like wide trenches or developing valleys, but are a few feet deep and wide. Gutters are formed by gully erosion and continue to move by head wall erosion or by lowering the side walls if steps are not taken to control erosion. The term "gully" comes from the French word "goule" for neck. The term could also have been derived from a type of knife known as a gully knife, as the hills with ravines look like they have been dissected with a sharp knife

How did gullies come about?

Gutters are formed by a process of gullying or gully erosion. Gully erosion is one of the four main types of erosion that occurs primarily on slopes. Areas that are not overgrown due to deforestation, overgrazing or other measures tend to erosion. When water flows through a narrow canal during heavy rainfall or after snowmelt, it expands the width of the canal by eroding its walls. The narrow channel widens and deepens due to the repeated action of the flowing water. The loose soil is easily carried away from the ground. Due to the erosion at a kink, the gullies increase in length. Gullies can also be created or modified by a number of human activities, including hydraulic mining and redirecting the flow of electricity to the slope.

Consequences of gutters

Gullies, like any effect of soil erosion, reduce the productivity of farmland. They also dissect properties that make the land difficult to access and manage and reduce their values. Gutters also cause destruction on farms and land improvements such as fences or tracks. Sediments carried by flowing water cause discoloration and can also clog the waterway, fill dams and lower paddocks.

Control measures

Gutters can be effectively controlled either by solving the problem in the catchment area or by stabilizing the channel itself. The goal of the catchment area is to divert the flow of water into a more stable drainage area. Water can be diverted from areas prone to gully erosion, thereby reducing the erosive power of water in a well-vegetated area. Gutters can also be stabilized by modifying the flow of water that travels through a gutter to reduce the scrubbing effect and allow sediment to accumulate. Gully erosion can generally be prevented by maintaining vegetation along the drainage lines and eliminating activities that destroy the soil of the vegetation cover.


Author: Walter Willis

Walter Willis is a 35 year old journalist. Organizer. Hipster-friendly music specialist. Internet guru. Trailblazer of the journey.