Water Resource Management and Traditional Irrigation Technologies in Ancient Desert Environments: A Comparative Study of the Garamantian Foggaras of Fezzan and the Aflaj of Oman

Abstract

This study examines traditional irrigation systems and water resource management in desert environments through a comparative historical analysis of the foggara systems of the Fezzan region in southern Libya and the aflaj of the Sultanate of Oman. It aims to investigate the technological and engineering principles underlying these systems, analyse the methods employed in groundwater extraction and distribution, and explore their role in enabling human communities to adapt to arid environmental conditions while sustaining permanent settlement and agricultural and economic activities.

The study adopts a comparative historical approach, drawing on archaeological and historical evidence alongside relevant environmental and engineering data. It examines the architectural and hydrological characteristics of each system, with particular emphasis on the use of underground tunnels and channels to convey water through natural gradients and gravitational flow. It also explores the social and economic dimensions of water resource management, particularly the mechanisms governing water allocation and access.

The comparative analysis reveals that the foggara systems of Fezzan and the aflaj of Oman represent significant achievements in technological innovation and human adaptation to water scarcity. Although the two systems share fundamental engineering principles and agricultural functions, they differ in their historical and environmental contexts, management practices, and patterns of continuity. The Omani aflaj, in particular, demonstrate the enduring vitality of traditional water-management practices, with five aflaj systems inscribed on the UNESCO World Heritage List. By contrast, the decline in the operation of the Fezzan foggaras was associated with historical, environmental, and economic transformations that affected the region following the decline of Garamantian civilisation. The study concludes that these systems provide important evidence of the development of water-management knowledge in ancient societies and highlight the significance of traditional irrigation technologies for understanding the historical management of water resources and the sustainability of human communities in arid environments.