Located near Tanguiéta in Benin, the Dassari Basin is equipped with numerous hydro-meteorological sensors which have been collecting data since 2013. The basin is a portion of land identified and characterized by WASCAL in 2012 for its research work. It is located in the neighborhood of Materi in the Atacora district of Benin. Covering an area of 200 km2, it has been delimited so that no external water enters it, and all its rivers converge towards the Pendjari park which is located completely downstream of the basin and which is thus considered to be its outlet. It has a little rugged relief which ensures a slow flow in the main rivers. As a result, the Dassari basin straddles the Pendjari park and a part of the neighborhoods of Materi and Tanguiéta. This gives the basin the advantage of having both a Controlled Occupation Zone and a disturbed area due to the vast array of anthropogenic activities by residents of the nearby villages.
