ORIGINAL RESEARCH article
Front. Sustain. Cities
Sec. Cities in the Global South
Integrating Geospatial Mapping and Stakeholders' Perception on Sustainable Flood Solutions in a Typical Coastal Megacity of Nigeria: A SWOT-AHP Approach
Provisionally accepted
Opeyemi Aniramu*
Oluwagbenga Orimmogunje- Obafemi Awolowo University, Ife, Nigeria
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The study identified urban flood-prone areas, surface inundation mapping, and prioritize strategic flood solutions using integrated approach. Satellite imagery of Digital Elevation Model, Sentinel-2, and spatial rainfall data were utilized for spatial vulnerability mapping in Lagos State. In addition, questionnaire were administered to participants on 40 elements outlined in the SWOT survey instrumentation, and responses were analyzed. Findings revealed high flood vulnerability in the study area, particularly the densely populated metropolitan areas with inadequate drainage infrastructures. Rainfall patterns during the JJA and SON peaks were linked to flood frequency and high surface inundation, highlighting the need for early warning systems and drainage improvements. The SWOT-AHP revealed flood strategies across four thematic pillars: Environment (0.45), Legal and Institutional (0.22), Socio-economic (0.16), and Urban Engineering (0.16). Strategic alternatives were ranked based on global weight values and categorized into shortterm strategies focused on critical infrastructure and evacuation planning. Mid-term priorities included green infrastructure and smart monitoring systems, while long-term strategies emphasized sustainable urban planning and regulatory enforcement. Findings underscore more integrated policy implementation, community engagement, and improved investment on adaptive infrastructure to reduce flood risk. The structured decision-support tool suggested a proactive, sustainable, and inclusive flood resilience strategies for stakeholders.
Keywords: SWOT-AHP analysis, Urban Flooding, Vulnerability mapping, Early warning system, strategic planning, urban infrastructure
Received: 10 Jul 2025; Accepted: 30 Sep 2025.
Copyright: © 2025 Aniramu and Orimmogunje. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Opeyemi Aniramu, samuelaniramu@gmail.com
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