UNESCO World Heritage Sites (WHS) worldwide are vulnerable to natural and man-made hazards. These hazards consequently affect their Outstanding Universal Values (OUV), authenticity and integrity. Therefore, ensuring the sustainability and resilience of these WHS against different incidents is crucial in order to maintain the tourism flow. This study aims to identify potential risks that might affect the Aflaj irrigation system to enhance their resilience and highlights Falaj Daris as a case study. This study used three methods, semistructured interviews to collect data from the Falaj Daris coordinators, local community, and governmental specialists in managing WHS in Oman. In addition, the use of observation and the Geographic Information System (GIS). The use of the GIS helps to prove the outcomes of other research methods used by highlighting the current and potential risks around Falaj Daris and its boundaries. The study results revealed that many threats are endangered Falaj Daris as a result of the lack in coordination between the various parties concerned with the management of cultural heritage in the Sultanate of Oman, especially the World Heritage sites. This weakness in coordination led to the random planning and multiple roles in management that has put these sites at risk. Also, Falaj Daris are threatened by other risks such as the infringement of its boundaries and buffer zones, urbanization, pollution, lack of tourism activities and interpretation. Moreover, the irresponsible behaviours of some of the local people have caused a weakness in the flow and quality of the falaj water. 82 2 The study raises several recommendations which are divided into development aspects and management issues. They aim to enhance capacity-building, stakeholder partnership, sustainable investment, education, experience enhancement, tourist behaviour management, local communities engagement, zoning, and the active use of the resources, water management, hazardous waste management and the improvement of the legal framework.