1 23 Water Resources Management An International Journal - Published for the European Water Resources Association (EWRA) ISSN 0920-4741 Volume 29 Number 4 Water Resour Manage (2015) 29:1117-1135 DOI 10.1007/s11269-014-0864-z Modifications in Water Resources Availability Under Climate Changes: A Case Study in a Sicilian Basin Lorena Liuzzo, Leonardo V. Noto, Elisa Arnone, Domenico Caracciolo & Goffredo La Loggia