Citare: Mulţumiri: We specially thank National Institute of Hydrology and Water Management; Romanian Association of Hydrological Sciences and SCIENTIFIC COMMITTE of 16th Biennial Conference ERB: Hubert HOLZMANN, ERB coordinator (Austria), Niko VERHOEST (Belgium), Miroslav TESAŘ, (Czech Republic), Daniel VIVILLE (France), Britta SCHMALZ (Germany), Luca BROCCA (Italy), Edvinas STONEVICIUS (Lithuania), Christophe HISSLER (Luxemburg), Piet WARMERDAM (The Netherlands), Johannes DEELSTRA (Norway), Janusz SIWEK (Poland), João de LIMA (Portugal), Gianina NECULAU (Romania), Sergey ZHURAVIN (Russia), Ladislav HOLKO (Slovakia), Mitja BRILLY (Slovenia), Jérôme LATRON (Spain), and Liudmyla GORBACHOVA (Ukraine). It gives us a great pleasure to thank all of the authors for their contributions to the special issue. We also thank the editor in chief, Professor Sandu BOENGIU Ph.D. (Faculty of Sciences, Department of Geography - University of Craiova) of the Forum geografic, for the opportunity to publish this special issue. Thank you to all our reviewers for generously sharing your time, insight, and expertise with manuscript authors in the evaluation of their work. The Guest Editors gratefully acknowledge the commitment of all the reviewers and colleagues, who supported us in the publication of this Special Issue on: “HYDROLOGICAL BEHAVIOUR IN SMALL BASINS UNDER CHANGING CONDITIONS”. We hope you enjoy this Special Issue.