International Science Community Association International Research Journal of Environmental Sciences 15 4 2026 10 22 Assessment of Stormwater accumulation and Urban Flood Hazard in Samarkand City Using Remote Sensing, GIS Technologies and the SWMM Model 106 111 EN Sirojiddin Muradov 1 Karshi state technical university, Karshi, Uzbekistan Dubey Arti 1 Department of Chemistry, VIVA College Virar (W), Maharashtra, India KANSOLE and Laboratory of Geosciences and Environment (LaGE) Michelline Marie Regina 1 University Yembila Abdoulaye Toguyeni, P.O 54 Fada N' Gourma, Burkina Faso University Joseph KI-ZERBO 2 Multidisciplinary Laboratory for Engineering Science Research, Polytechnic School of Ouagadougou (EPO), 18 PO 234 Ouaga 18, Burkina Faso P.O 7021 3 University Yembila Abdoulaye Toguyeni, P.O 54 Fada N' Gourma, Burkina Faso Ouagadougou 4 Burkina Faso 5 BEIDARI Mohamed 6 KIMA Adama 7 Kumar Brinder 1 Department of Zoology, GGM Science College Jammu, J&K (UT), India Yadav Surender Singh 1 Department of Economics, Government College, Kanina (Mahendergarh), Haryana, India Narayan Laxmi 2 Department of Economics, Government College, Mahendergarh, Haryana, India Musajonov Mukhammadrasul 1 Tashkent State Transport University, Temiryo‘lchilar Street 1, Tashkent, 100167, Uzbekistan Ibadullaev Ahmadjon 2 Tashkent State Transport University, Temiryo‘lchilar Street 1, Tashkent, 100167, Uzbekistan Babayev Askar 3 Tashkent State Transport University, Temiryo‘lchilar Street 1, Tashkent, 100167, Uzbekistan Chorshanbiev Umar 4 Tashkent State Transport University, Temiryo‘lchilar Street 1, Tashkent, 100167, Uzbekistan Souley HAROUNA 1 Department of Civil Engineering, School of Mines, Industry and Geology of Niamey (EMIG), Niamey, Niger Abdourazakou MAMAN HASSAN 2 Department of Mines-Geology, School of Mines, Industry and Geology of Niamey (EMIG), Niamey, Niger IBRAHIM ELHADJI DAOU 3 Department of Mining Engineering and Environment, School of Mines, Industry and Geology of Niamey (EMIG), Niamey, Niger Chékaraou Mahamane Moustapha Sanda 4 Djibo Hamani University of Tahoua, Faculty of Education Sciences, Department of Discipline Didactics, Tahoua-Niger Mansour Badamassi Kadri Mahaman 5 Dept. of Geological and Environmental Sciences, Faculty of Sciences and Techniques, André Salifou University of Zinder (UAS), Zinder, Niger Laouali Idi Karimou 6 Department of SVT, Abdou Moumouni University, Higher Normal School, Niamey, Niger Adama BOUBACAR AMADOU 7 Department of Mines-Geology, School of Mines, Industry and Geology of Niamey (EMIG), Niamey, Niger Usmanovich Samadov Alisher 1 Department of Engineering Communication, Tashkent University of Architecture and Civil Engineering, Tashkent, Uzbekistan qizi Abdusamiyeva Lobarkhon Nomonjon 2 Department of Mining, Almalyk State Technical Institute, Almalyk, Uzbekistan Bakhodirovna Khojimuratova Khilola 3 Department of Mining, Almalyk State Technical Institute, Almalyk, Uzbekistan Khikmatullayevich Ibragimov Umidjon 1 Karshi state technical university, Karshi, Uzbekistan Rubenovich Avanesov Tigran 2 Karshi state technical university, Karshi, Uzbekistan Ubaydullayevna Mirzayorova Sevara 3 Karshi state technical university, Karshi, Uzbekistan Soy Vladimir 1 Department of Construction of Buildings and Industrial Structures, Tashkent State Transport University, Tashkent, Uzbekistan Nuriddinova Gavkhar 2 Department of Construction of Buildings and Industrial Structures, Tashkent State Transport University, Tashkent, Uzbekistan Senanou GBAFA 1 Laboratory of Structure and Materials Mechanics: University of Lome, Togo and Laboratory of Geoscience water and environment: University of Lome, Togo Sena APEKE 2 Laboratory of Research in Engineering Science: University of Lome, Togo Kokou WOTODZO 3 Laboratory of Structure and Materials Mechanics: University of Lome, Togo Ibragimovich Gulyamov Yashnar 1 Academy of the Ministry of Emergency, Situations of the Republic of Uzbekistan, Tashkent, Uzbekistan Bobokalonov Manuchekhr Khaydarovich 1 Samarkand State Technical University, Lolazor Street, Samarkand 140143, Uzbekistan > Research Paper 2026 9 23 2026 10 22 Rapid urban expansion, increasing impervious cover and the growing variability of precipitation make stormwater management a pressing issue for the cities of Central Asia. This study assesses stormwater accumulation and the resulting flood hazard in Samarkand city (Uzbekistan) by integrating satellite remote sensing data, GIS-based spatial analysis and the EPA Storm Water Management Model (SWMM). Land cover, imperviousness and surface topography derived from remote sensing products were used to delineate urban subcatchments and parameterise the hydrological model. Four design-storm scenarios of 120 minutes duration were generated with the Alternating Block Method (ABM); peak intensities ranged from about 102 to 120 mm/h. The 2025 climatic record shows a strongly seasonal regime: roughly 285 mm of annual precipitation, of which about 91% fell between December and May, and a single month (December) contributed about 35% of the annual total. Modelled flood hazard was classified into five classes (very low to very high). Under the least severe scenario, high and very high hazard zones covered about 9% of the study area, rising to about 32% under the most severe scenario, while the very high class grew from about 1% to 15%. The results demonstrate that a combined RS-GIS-SWMM workflow is an effective and low-cost tool for identifying drainage bottlenecks and prioritising stormwater infrastructure and low-impact development (LID) measures in semi-arid cities. Copyright@ International Science Community Association