SYSTEM OF FLOODWATER DISTRIBUTION

Distribution system of rainwater has been implemented more than eight centuries ago, the two scholars: Sheikh Ba Mhamed Abu Sahaba in 1273 and Sheikh Hammou Oulhadj in 1707 settled the rainwater distribution system, the storm water is found at the bottom of the palm upstream about 4 km west of Ksar.

Rainwater is channeled from the watershed of Oued M'Zab extending upstream for several hundred kilometers, in a natural way to a place called "Amlaga" which is the focal point and meeting place of two of the most important Wadis. Labiad Wadi and Laader Wadi.

At this level the Oumana "Men who have responsibility for the management of the watershed" has built the first hydraulic structure whose function is to slow the speed of flood waters and then distribute it to the irrigation of gardens and Bouchene dam to supply the water, the surplus is diverted to the bed of the M'zab Valley Wadi up Al-Etteuf.

The watershed to the gardens is formed by a system called "Tissenbad N'Bouchéne" which consists of three major underground channels equipped with ventilation Fougaras that allow access for cleaning. Each of these canals opens into an alley-channel at the palm groves allowing the flood water to reach the gardens through slots carefully sized for the number of palm trees and on the surface to be irrigated. It should be noted that the palm which is an artificial oasis, owes its thanks to that efficient and ingenious system.