What are Contour Barriers in Geography?

Imagine a farmer growing crops on a steep, slanted mountain. If there is a massive rainstorm, the water will violently rush straight down the slope, taking all the precious mud and seeds with it. To stop this, the farmer builds small, horizontal 'speed breakers' across the mountain using heavy stones, thick grass, and soil. These physical speed breakers are called Contour Barriers. Instead of rushing down the mountain, the rainwater violently hits these stone and grass walls, slows down, and collects in tiny trenches dug right in front of the barriers.

1. Stops Soil Erosion: Because the water hits the physical stone wall and stops, the valuable topsoil cannot be washed away down the mountain.
2. Increases Groundwater: Because the water is trapped in the trenches behind the grass walls, it gets plenty of time to slowly sink deep into the ground, massively increasing the moisture of the soil for the crops.

Do not confuse these two terms in the exam:

• Contour Barriers: Physically building massive walls of stones and grass to block water.
• Contour Ploughing: Simply driving the tractor horizontally across the mountain to create natural mud ridges, without using any external stones or grass.