INVENTORY OF TRADITIONAL KNOWLEDGE TO COMBAT DESERTIFICATION

PHOTOGRAPHICAL  AND  TYPOLOGICAL  INVENTORY

B13 - WATER-INTAKES-AND-CREATION-OF-GARDENS-ON-THE-SIDES-OF-THE-RIVERBED
Roufi (Algeria), a wadi oasis that uses the protection of the walls of the canyon and the wadi bed for the cultivations. The water supply comes from the underground flow and the sporadic floods.
Along the upper course of wadi Saoura (Algeria) the dams stop the underground flow and produce surface water for the crops planted along both sides of the riverbed. When floods occur and form water courses flowing on the ground, the latter are conveyed to the lateral terraces (A) in order to allow irrigation by gravity at a higher level than the natural run-off (B). In periods of aridity, humidity is retained in the subsoil and water is drawn up from an outlet situated at the foot of the dams (C).
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WATER-INTAKES-AND-CREATION-OF-GARDENS
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INVENTORY OF TRADITIONAL KNOWLEDGE TO COMBAT DESERTIFICATION