Floods pose a global threat, impacting communities, economies, and people (De Silva & Kawasaki, 2020; Glago, 2021). It can result from natural phenomena like heavy precipitation, snowmelt, deforestation, or man-made factors such as dam failures (Hariri-Ardebili & Lall, 2021; Molden et al., 2022). The consequences of floods are far-reaching, affecting ecosystems and causing ecological, environmental, economic, and physical damage (Armah et al., 2010; Manzoor et al., 2022; Talbot et al., 2018). Flood risks are influenced by climate change, changes in land use, and socioeconomic factors (Ali et al., 2016; Li et al., 2021; Merz et al., 2014). In order to effectively assess these risks and develop flood management strategies, Geographic Information Systems (GIS) and remote sensing are invaluable tools. Policymakers can rely on these methodologies to make informed decisions when faced with flood threats (Adjei-Darko, 2017; Wang & Xie, 2018).
GIS and remote sensing-based flood assessments in Bangladesh are important for flood risk assessment (Rana et al., 2024). In Golestan province, Iran, a GIS-based flood hazard assessment identified the Chelichay and Sarab Gorganroud sub-watersheds as the most flood-prone areas. The Dough and Middle Gorganroud sub-watersheds have moderate flood risks, while the Payab and Gharesou sub-watersheds have low flood risks (Safaripour et al., 2012). A geospatial study conducted in Pakistan's Sindh Province identified a very high hazard area spanning 6216 km2 out of a total of 46,138 km2 (Uddin et al., 2013). This study evaluated flood-prone areas in the Panjkora River Basin in the eastern Hindu Kush region of Pakistan. A hazard map was created and classified into five susceptibility classes: very low, low, moderate, high, and very high (Ullah and Id, 2020). In Wadi Al Lith, Saudi Arabia, a GIS flood assessment study categorized sub-basins into high, medium, and low hazard degrees, enabling effective flood risk assessment and mitigation planning (Elkhrachy, 2015). In Uttarakhand, India, a flood hazard assessment using GIS and remote sensing found varying vulnerability levels, ranging from very low to extremely high potential flood hazards (Bhatt et al., 2014). A study conducted in Greece's Koiliaris River Basin divided flood hazard vulnerability into five regions with different flood hazard levels. This study identified high-risk areas and settlements that were susceptible to flooding (Kourgialas et al., 2011). In West Africa, a study employing GIS and remote sensing evaluated flood hazard vulnerability. Approximately half of the study area was identified as falling within the high-intensity flood zones. The study demonstrated accurate mapping of flood hazard areas through empirical validation, including a statistical confusion matrix and Participatory GIS principles, achieving an accuracy rate of 77–81% (Asare-Kyei et al., 2015).
Afghanistan is a landlocked country in South Asia (Ahmad et al., 2024; Masomy, 2021), has an arid to semi-arid climate, and is prone to various natural hazards such as floods, earthquakes, landslides, avalanches, and droughts (Hussainzada, 2021; Pal et al., 2023). Approximately 54% of the natural disasters in Afghanistan are related to weather and water. Among low-income countries, Afghanistan ranked second in the number of casualties caused by natural disasters between 1980 and 2015 (Social et al., 2022). Several key causes of floods in Afghanistan include heavy precipitation, topography, defects in irrigation systems, improper dam construction, lack of water management, climate change, soil erosion, and deforestation (Fazel-Rastgar & Sivakumar, 2023; Hagen et al., 2010; Mushwani et al., 2024; Safi et al., 2024). According to the Global Forest Watch report for 2024, Afghanistan lost 1.90 kha of tree cover from 2001 to 2023, resulting in a 0.92% decrease in tree cover since 2000. During the same period, Afghanistan gained 10.7 kha of tree cover, accounting for less than 0.1% of the global total. Deforestation has significantly increased the risk of flooding in Afghanistan, affecting over 800,000 individuals from 2000 to 2015 and causing approximately 100,000 people to be affected annually. The cost of river flooding events can exceed $500 million (Anderson 2024). It is projected that by 2050, the population affected by floods may double owing to climate change and socioeconomic growth. Factors contributing to this include insufficient flood protection infrastructure, limited early warning systems, and expansion of settlements in flood-prone areas (Disasters Profile, 2017). From 2000 to early 2024, floods in Afghanistan resulted in 14,426 fatalities, 75,355 injuries, and the destruction of 137,025 houses (EM-Data, 2024).
The Central Region Provinces; Kabul, Logar, Kapisa, Parwan, Panjsher, and Maydan Wardak are the most vulnerable regions to flood hazards (Ahmadi et al., 2024; Fazel-rastgar, 2023; Mushwani et al., 2024). The flood hazard parameters include climate change, precipitation, snowmelt, lack of drainage systems, inadequate water management, lack of canalization systems, and deforestation (Baig, 2024; Din et al., 2024; Safi et al., 2024; Shokory, Schaefli, Lane, et al., 2023). Inadequate early warning systems, lack of flood management policy, lack of urban planning, low level of community awareness, inadequate socio-economic status, and lack of community participation in flood management activities increase the risk and vulnerability to flood hazards (Mushwani et al., 2024; Pal et al., 2023; Safi, 2023). A comprehensive literature review reveals significant gaps in the existing research on flood-related issues in the central region of Afghanistan. There were no articles or officially published documents regarding the assessment and management of vulnerable flood hazard areas. Despite advancements in geographic technologies, there is a notable gap in the field of flood hazard vulnerability assessments utilizing GIS in the central region of Afghanistan. Thus, this research can fill this gap by focusing on the central region and providing essential information for policymakers, aiding the development of effective flood management policies based on its findings.
A flood risk assessment plays a crucial role in identifying the intensity and flood hazard level (Ahmed et al., 2022; Park et al., 2021; Salman & Li, 2018). Therefore, food hazard assessment is crucial for flood hazard mitigation and Management (De Wrachien et al., 2011). GIS-based modeling for flood hazard assessment is an effective approach to flood hazard management (Hadipour et al., 2020; Salman & Li, 2018). This means that flood hazard assessments help identify vulnerable areas, allowing responsible organizations, decision-makers, and policymakers to implement flood hazard mitigation measures (Atanga, 2020). Studies have shown that GIS tools can produce maps of flood-vulnerable areas (Abdelkareem and Mansour, 2023; Alemu and Ayene, 2023; Safaripour et al., 2012). Key indicators for flood vulnerability mapping include thematic maps such as the Digital Elevation Model (DEM), slope, soil type, elevation, land cover, vegetation, flow accumulation, and precipitation (Abdinour & Jayanta, 2023; Alemu & Ayene, 2023; Bhatt et al., 2014; Elkhrachy, 2015; Selvam et al., 2023; Zehra & Afsar, 2016). GIS modeling plays a crucial role in disaster management by integrating spatial information to enhance response strategies (Abid et al., 2021). Furthermore, the use of technologies such as remote sensing, artificial intelligence, and big data in GIS modeling allows efficient data acquisition, analysis, and dissemination for disaster management (Abid et al., 2022; Rezvani et al., 2023). Overall, GIS modeling in disaster management facilitates rapid response, risk assessment, and effective decision-making to mitigate the impact of disasters on life and safety (Cao et al., 2023; Rezvani et al., 2023). This study aimed to assess vulnerable flood hazard areas and highlight flood hazard management strategies in the central region of Afghanistan. This study provides valuable findings for policymakers and responsible organizations to consider these strategies in future flood management.