“…Copulas are often a good alternative to the most commonly used univariate frequency analyses. Among other applications, copula functions have been used for modelling droughts (Kao and Govindaraju, 2010;Wong et al, 2010;Liu et al, 2011;Reddy and Ganguli, 2012a;Lee et al, 2013;Ma et al, 2013;Wong et al, 2013), rainfall analysis (Singh and Zhang, 2007;Zhang and Singh, 2007a;Gargouri-Ellouze and Chebchoub, 2008;Ghosh, 2010;Vandenberghe et al, 2010;Balistrocchi and Bacchi, 2011;Ariff et al, 2012), assessing the risk of dam overtopping (De Michele et al, 2005), hyetograph analysis (Grimaldi and Serinaldi, 2006b), flood coincidence risk analysis (Chen et al, 2012), geostatistical models (Bardossy, 2006) and, indeed, flood frequency analysis (Grimaldi and Serinaldi, 2006a;Zhang and Singh, 2006;Renard and Lang, 2007;Zhang and Singh, 2007b;Karmakar and Simonovic, 2009). The first paper on copulas in hydrology was written by De Michele and Salvadori (2003), and in the next few years, several other papers were also published, e.g.…”