OMERE (Observatoire Méditerrannéen de l’Environnement Rural et de l’Eau) is co-driven by UMR LISAH (INRA, IRD, Montpellier SupAgro), Hydrosciences Montpellier (CNRS, IRD, Univ. Montpellier), INAT (Tunisia) and INRGREF (Tunisia). It is composed of two instrumented headwater catchments, Kamech in Tunisia and Roujan in in France .
The Roujan site is a 0,9 km2 catchment located in Hérault (France) monitored since 1992. Main cultivation is vineyards. The site is deeply shaped by anthropic activities (ditch network, terraced slopes). Climate is Mediterranean sub-humid with long dry season. Average annual rainfall and PET (Penman) are 630 mm and 1100 mm respectively.
The Kamech catchment is a 2,65 km2 catchment located north of Cape Bon, in Nabeul CRDA, between the sub-humid and semi-arid Mediterranean climates. It is monitored since 1994. Land use is characterized by a cultivation rate close to 75% with, in the order of importance: cereals, legumes and irrigated market gardening. Extensive cattle breeding completes the agricultural system. average inter-annual rainfall and PET (Penman) are about 600 mm and 1300 mm respectively. The outlet of the basin is occupied by a hilly reservoir (with an initial storage capacity of 140 000 m3) built in 1994.
All the data of OMERE are processed, qualified and stored into an information system (http://www.obs-omere.org).