Spatial and temporal rainfall variability and erosivity: Case of the Issen watershed, SW-MoroccoMohamed Ait Haddou, Belkacem Kabbachi, Ali Aydda, Hicham Gougni and Youssef BouchritiE3S Web Conf., 183 (2020) 02003DOI: https://doi.org/10.1051/e3sconf/202018302003