Complete Flood Frequency Analysis in Abiod Watershed, Biskra (Algeria)

The main objective of the present study is to estimate flood events of Abiod wadi at given return periods at the gauge station of M’chouneche, located closely to the city of Biskra in a semi-arid region of Southern-East of Algeria. [...] The motivation of the station and area choices is due to the existence of a dam to the downstream. [...] Moreover, the existence of Foum El Gherza dam to the downstream for the irrigation of the palm plantations makes the area more sensitive with regard to the floods. [...] The flood events of the years 1963, 1966, 1971, 1976 and 1989 remain engraved in the memory of the th inhabitants. [...] The first one, usually based on the generalized extreme value distribution (GEV), describes the limiting distribution of a suitably normalized annual maximum (AM) and the second uses the generalized Pareto distribution (GPD) to approximate the distribution of Peaks-Over-Threshold (POT).