What Are Signs of Erosion on a Hillside?

Water Color

• Rivers and streams near to the area of soil erosion will appear brown and muddy. This is a sign that soil is running off the land and into the water.

Breakdown in Soil Structure

• Gullies form when rain erodes a hillside. A gully is a trough that runs down a hill. Many gullies can join to form larger gullies, which will catch more rain than a non-eroded surface. This will increase the amount of soil erosion on the hillside, every time it rains. If there is a heavy storm, these gullies can increase in size quickly.

Gradient of the Hillside

• Soil erosion will cause the slope of the hillside to change. It will usually become steeper, increasing the problem of soil erosion, as the soil will disappear quicker off a steep gradient.

Lack of Vegetation

• If the soil is eroding, plants will struggle to thrive, because the roots may not be able to find needed nutrients. Roots will be unable to anchor the plant, and it will wash away during rain.

Undermine Structures

• Foundations may become exposed, and if there is anything built on the hillside, such as a house or a bridge, soil erosion will reduce its stability. If the erosion is allowed to continue, the structure will eventually be in danger.