ALOHA: an innovative system for surveillance of hydraulic structures Paul-Henri Faure, Vanina Gbiorczyk, Violaine Degezelle, Frédéric Zenss and Vincent Morisseau E3S Web Conf., 7 (2016) 03016 Published online: 20 October 2016 DOI: 10.1051/e3sconf/20160703016