The presence of a main channel across the lake from west to east provides the drainage, but it is insufficient to evacuate the water in the winter.

[3] At this time the lake's surface elevation would have reached 16 metres (52 ft) in winter, with an area of 14,000 hectares (35,000 acres).

[5][a] In 1877 the Mokta El Hadid company gained permission to drain the lake in exchange for free transfer of the reclaimed land.

[4] The soil quality has been defined as the result of its physical, chemical and biological properties, which allows growth and crop development, regulation and the score of water flow through the environment and acting as filter pump towards the pollutants.

The soil quality reflects its ability to retain and to release water and nutrients to maintain its biodiversity and resisting to effects of practices that can lead to its degradation.

The soils of Fetzara Lake have been the subject of several studies for agricultural development, all of which revealed any significant constraints on their use such as salinization and hydromorphy [1, 2, 3, and 7].

The soil samples were dried to fresh air ground and sieved to 2 mm to obtain the fine particles that will be used for all chemical and physicochemical analysis.

The soil analysis carried out concerning the density, porosity, carbon and organic matter, pH, electrical conductivity and soluble salts.

The soil of the Fetzara Lake are characterized by a real density of about 2.31 g/cm3, an average porosity of about 33%, permeability in most cases less than 2 cm / h, the pH is slightly acidic to alkaline (5.65 to 7.93), and an organic matter content highly variable (0.26 to 7.67%) [10].

The Soil can be affected by the problem of salinity due to presence of excessive concentrations of soluble salts, sodium or both at once.