https://unilib.phaidrabg.rs/o:8512 XVIII International Scientific Conference Modern Materials 2025 – Program and Book of Abstracts, Banja Luka, September 11-12, 2025 startpage: 120 All rights reserved 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. Zarić-Kovačević, Jelena Mitrinović, David Vujović, Nela Perović, Marija application/pdf 1681977 bytes Pleistocene alluvial deposits, Sava River, Belgrade Groundwater Source, boreholes, water wells 2025 eng info:eu-repo/semantics/conferenceProceedings Academy of Sciences and Arts of the Republic of Srpska, Banja Luka Influence of local factors on the deposition of Pleistocene alluvial sediments in the lower Sava river valley