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The Algerian Sahara contains important potential underground water. These resources, which would be 5 billion cubic meters, of which 1 billion cubic meters is mobilized, and are therefore non-renewable fossil fuels. The availability of water led to the development of agriculture in the oases adapted, this oasis agriculture is characterized by small family farms in which agricultural production is organized according to a scheme that meets the needs of consumption (vegetable production for family needs) and marketing (usually some vegetables, but mostly dates).

Foggara is the main component in the traditional catchment supply and distribution of groundwater wells irrigation. des, galleries, combs distributors of water, seguias, seguias of secondary and small basins (madjen) built the system. Foggara waters are currently intended for irrigation in most Ksour.

The vegetable production is structured vertically in a palm plantation of more than one score of years, under the date palm of the fruit trees (fig tree, olive-tree, vine, pomegranate) are planted. The oases are generally installed in alluvial zones drained by rivers and in the low parts are periodically flooded.

It is very important to see the impact of the old system of irrigation "Foggara" and recent "drip, pivot" on the environment; Or impact:

- On the groundwater resources

- On the ground

- And on agricultural output