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The KAMECH catchment (2,63 km²) and the LEBNA catchment (210 km²) in Tunisia.

 

The KAMESH catchment is located north of Cap-Bon, in the Nabeul CRDA, at the fringe of the Mediterranean sub-humid and semi-arid climates. Mean interannual rainfall is approx. 650 mm. The catchment outlet is occupied by a hillside reservoir (140 000 m3 initial capacity).

Land use is characterized by a cultivation rate close to 75%, with, in descending order of importance, cereals, legumes and irrigated market gardening. Rather significant gullying and mass transfers occur in this catchment.

This catchment has been subjected to hydrological balance and erosion surveys since 1994. An experimental facility comprises four interlocking hydrological stations, a small dam used as a trap for sediments, eleven pluviometers, a network of over 20 piezometers fitted with automatic probes, a weather station, a flux tower and two complete agro-climatological stations. This catchment is part of a network of 27 catchments surveyed within the framework of a convention with the Tunisian Ministry of Agriculture.

The Kamesh catchment is a sub-catchment of the LEBNA catchment, where major agricultural intensification is presently occurring, as manifested by an increase in irrigated cropping systems, in hydro-agricultural developments and in the use of fertilizers and pesticides..

The entire Kamech-Lebna facility is comparable in size and density of observations to the Roujan-La Peyne facility.

 

Galerie documents: 
Livret dispositif d'observation Kamech Lebna 2013