Civil and Geoengineering Letters Editorial Office info@jcivilgeo.com mEDRA 20260525 DOI Registration 01

06 10.22034/CGEL.3.1.e100053 https://jcivilgeo.com/article/e100053 Civil and Geoengineering Letters mEDRA 01 01 3115-8129 Civil and Geoengineering Letters Editorial Office IR 01 3115-8129 JB 3 1 01 202605 1 1 A01 Daryoush Ahadi Rosta Ahadi Rosta, Daryoush Daryoush Ahadi Rosta 01 eng 202605 03 00 The present study aimed to develop a landslide susceptibility map for Khoy County, located in West Azerbaijan Province, northwest Iran. To achieve this, a range of conditioning and triggering factors were considered, including elevation, slope aspect, slope angle, geological formations, precipitation, drainage density, degree of weathering, land use/land cover, proximity to faults, earthquake distribution, distance to roads, and distance to urban areas. For the methodological framework, the Fuzzy Analytic Hierarchy Process (FAHP) was employed to assess landslide susceptibility across the region. The FAHP-based model was applied to the various thematic layers, which were rasterized and integrated into a Geographic Information System (GIS) environment to generate the final susceptibility map. The results revealed a significant landslide risk in the study area, with spatial distribution as follows: very high susceptibility (22.17%), high (25.34%), moderate (13.66%), low (16.63%), and very low (22.20%). This classification highlights that nearly half of Khoy County falls within high to very high-risk zones. Given the considerable extent of susceptible areas, incorporating landslide hazard assessments into regional planning and development strategies is strongly recommended. The findings emphasize the critical need for sustainable land management and hazard mitigation efforts to minimize potential damage and ensure public safety. 20 Landslide susceptibility assessment; Geo-hazards; GIS environment; Fuzzy logic; Khoy County 01 00 20260304 02 00 20260331 2026 Daryoush Ahadi Rosta