Recent activities focus on regional analyses of streamflow extremes for low flow indices (Rossi & Caporali, 2011a,b; 2010a,b) and peak discharge (Chiarello et al., 2012) estimation in ungauged river basins.

Moreover, recent research studies (Bocci et al., 2011a,b) cope with the rainfall extreme values analysis with the use of a geoadditive model, in the wider framework of relatively recent research activities on regional frequency analysis of hydrological extremes (Caporali et al., 2008; Cavigli&Caporali, 2008a,b; Cavigli et al., 2007; Cavigli et al., 2006; Tartaglia et al., 2005).