Authors : Iswan S. Adjam; Andi Asnudin; Rudi Herman

Volume/Issue : Volume 11 - 2026, Issue 7 - July

Google Scholar : https://tinyurl.com/uhfc5v84

Scribd : https://tinyurl.com/3rsymz39

DOI : https://doi.org/10.38124/ijisrt/26jul846

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Abstract : River flooding is one of the most frequent natural disasters in tropical countries like Indonesia, causing significant material losses and disrupting the socio-economic life of affected communities. Olaya Village, Parigi Moutong Regency, Central Sulawesi, has experienced repeated flooding over the past decade due to drastic changes in river conditions caused by illegal mining activities in the upstream area (Kayuboko Village), leading to severe sedimentation and siltation downstream. This study aims to (1) describe the application of the AS/NZS ISO 31000:2018 standard in river flood mitigation planning, (2) identify the obstacles and supporting factors in the implementation of risk management, and (3) analyze the impact of risk management application on flood preparedness and mitigation in Olaya Village. The research employs a qualitative approach with a case study method. Data were collected through observation, in-depth interviews with 35 respondents consisting of village government officials, community leaders, and affected residents, as well as documentation. Data analysis used thematic analysis with a risk matrix approach (Likelihood × Severity) referring to the AS/NZS ISO 31000:2018 framework. The results identified 11 risk indicators with risk scores ranging from 8.05 to 23.60. The highest risks were illegal mining activities (23.60), river overflow into settlements (21.66), and flood frequency during heavy rainfall (21.15), all falling into the extreme category. Meanwhile, technical and non-technical mitigation capacities remained in the medium category (8.05–9.71), indicating a significant gap between threat levels and existing capacity. The application of ISO 31000 has only reached the context establishment and risk identification stages, while risk analysis, evaluation, treatment, and monitoring have not been formalized. The main obstacles are ongoing illegal mining, limited mitigation infrastructure, and weak institutional capacity. Supporting factors include community awareness and the emerging commitment of the village government, although both still need to be strengthened. This study concludes that the implementation of ISO 31000-based risk management has the potential to improve flood preparedness and mitigation effectiveness if implemented comprehensively, including the crackdown on illegal mining, strengthening technical and nontechnical mitigation, and integrating risk management into village planning in a systematic and sustainable manner.

Keywords : Risk Management, ISO 31000, Flood Mitigation, Illegal Mining, Olaya Village.

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