GIS and remote sensing techniques for the assessment of land use change impact on flood hydrology: the case study of yialias basin in CyprusGIS and remote sensing techniques for the assessment of land use change impact on flood hydrology: the case study of yialias basin in Cyprus Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2015-11-102013enFlooding is one of the most common natural disasters worldwide, leading to economic losses and loss of human lives. This paper highlights the hydrological effects of multi-temporal land use changes in flood hazard within the Yialias catchment area, located in central Cyprus. Calibrated hydrological and hydraulic models were used to describe the hydrological processes and internal basin dynamics of the three major sub-basins, in order to study the diachronic effects of land use changes. For the implementation of the hydrological model, land use, soil and hydrometeorological data were incorporated. The climatic and stream flow data were derived from rain and flow gauge stations located in the wider area of the watershed basin. In addition, the land use and soil data were extracted after the application of object oriented nearest neighbor algorithms of ASTER satellite images. Subsequently, the CA-Markov chain analysis was implemented to predict the 2020 Land use/Land cover (LULC) map and incorporate it to the hydrological impact assessment. The results denoted the increase of runoff in the catchment area due to the recorded extensive urban sprawl phenomenon of the last decade. http://creativecommons.org/licenses/by/4.0/Natural Hazards and Earth System Sciences154833-4869 Alexakis Dimitrios Αλεξακης Δημητριος Gryllakis Emmanouil Γρυλλακης Εμμανουηλ Koutroulis Aristeidis Κουτρουλης Αριστειδης Agapiou Athos Themistocleous Kyriacos Tsanis Giannis Τσανης Γιαννης Michaelides Silas Pashiardis S. Demetriou C. Aristeidou Kostas Retalis Adrianos Tymvios Filippos Hadjimitsis Diofantos G. Remote-sensing imagery Remote sensing systems Remote terrain sensing Sensing, Remote Terrain sensing, Remote remote sensing remote sensing imagery remote sensing systems remote terrain sensing sensing remote terrain sensing remote