INTERNATIONAL COLLABORATIONS WITH: 1) Princeton University, NJ-USA (Prof. I.Rodriguez-Iturbe); 2) Florida International University-USA (Prof. F.Miralles-Wilhelm); 3) Massachusetts Institute of Technology-USA (Prof. R.L.Bras); 4) School of Civil Engineering and Geosciences -Newcastle University-UK (Prof. H.Fowler); 5) Duke University-USA (Prof. A.Porporato); 6) University of Michigan-USA (Prof. V.Ivanov); 7) University of Washington-USA (Prof. E.Istanbulluoglu); 8) Laboratory of Ecohydrology, ENAC-Switzerland (Prof. A.Rinaldo); 9) Arizona State University-USA (Prof. E.Vivoni). NATIONAL COLLABORATIONS WITH: GRAL (Gruppo Alluvioni); CINID (Italian Consortium of Universities for Hydrology); CINFAI; Politecnico di Torino; CREA-PB; IMAGE and International Center of Hydrology ‘Dino Tonini’ - Università di Padova; University of Cagliari; CIMA–Research Foundation (Savona, Italy); Consortium TeRN (PZ).