o:8512 Influence of local factors on the deposition of Pleistocene alluvial sediments in the lower Sava river valley en The Quaternary period was characterized by cyclic climate change, with alternating cold and warm stages. A case study of the alluvial sediments at water supply wellfield of the City of Belgrade shows how climate change has influenced the formation of alluvial sediments in the riparian area of the Sava River (Sava River ditch, in the southeastern part of the Pannonian Basin). A stratigraphic analysis of the Quaternary sediments of two boreholes on the location a BGS water well is presented in the paper, along with the methods, results, indications and hypotheses about their origin and the characteristics of the strata in the context of Pleistocene climate change and the local tectonic setting. The results indicate that alluvial sedimentation and the characteristics of these sediments are predominantly determined by the tectonic and geological setting, as well as local conditions of the area surrounding the object locations, supported by lateral streams and tributaries. Pleistocene alluvial deposits, Sava River, Belgrade Groundwater Source, boreholes, water wells 2025-11-26T09:45:17.465Z 44 no 46 Jelena Zarić-Kovačević Mining Institute Ltd. Belgrade, Zemun, Serbia David Mitrinović Jaroslav Černi Water Institute, Belgrade, Serbia person 0000-0002-8097-2998 Nela Vujović Institute for Technology of Nuclear and other Mineral Raw Materials, Belgrade, Serbia person Marija Perović Jaroslav Černi Water Institute, Belgrade, Serbia person 0000-0003-2045-001X application/pdf 1681977 https://unilib.phaidrabg.rs/o:8512 no yes 1 70 92000004 71A04 XVIII International Scientific Conference Modern Materials 2025 – Program and Book of Abstracts, Banja Luka, September 11-12, 2025 120 Academy of Sciences and Arts of the Republic of Srpska, Banja Luka 2025