The main hydrotechnical event is the terracing of the slopes. It eliminates or significantly reduces water runoff and soil removal on the slope.

They build on two types of terraces:

• Shaft terraces: They are built on small slopes, have a wide base, small height and sloping slopes. This allows mechanization to be used and field crops to be sown. Shaft terraces are built with a slope of the terrain not exceeding 15%
• Stepped terraces: They are built on steeper slopes, have a narrower base and are mainly used for growing perennials.