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DRAINAGE AND EROSION CONTROL

After the very heavy rains we experienced over winter (especially in areas such as Benoni) certain parts of your yard, such as your gravel driveway, may be affected by erosion. Incessant erosion can be a huge headache, especially when it starts to seem impossible to prevent water from invading your garden space with its puddles. You can, however, prevent the effects that water has on your landscape.

Water may seem unassuming and even soft, however in large quantities, it possess enough power and energy to destroy solid granite. Although this may seem miraculous, this is based on pure, simple physics:

                Force = mass x acceleration.

You cannot control the mass of water, but you can control the force. There are two basic factors that contribute to erosion in your yard.

  • The angle of your landscaping
  • The material, such as the sand, gravel and rocks, used in your landscaping

Carefully analyse the materials that are incorporated into your garden. You should integrate larger rocks into your garden space because it slows down the excess water movement and guides the water into the appropriate drainage channel where water would normally flow to. If you create a smooth paved channel for the water to flow into downwards, the water will accelerate to high speeds. The steeper the channel, the faster the water flow. This can cause erosion as the water’s energy will channel to the soil or grass and chew it away.

The shape of driveways or gravel roads often succumb to erosion because they are wrongly shaped– the centre of the road is lower than the edges. The water ends up rushing down the centre causing, significant erosion. For this reason, road engineers have begun creating driveways that have a higher centre; this enables the water to run down the side of the road. The same principle goes for your yard’s driveway and landscaping.

For more information read Soil and Water Erosion Solutions

For assistance with drainage and erosion control, contact Sand Shifters.

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