Watering the Desert: Environment, Irrigation, and Society in the Premodern Fayyum, Egypt

Through a study of its natural environment and irrigation system, this dissertation investigates the evolution of the landscape of Egypt's Fayyum depression across sixteen centuries, from the third century BCE to the thirteenth century CE. From the evidence of Greek papyri, Arabic fiscal documentation, early modern travel literature, archaeology, and contemporary scientific work, I chart the changes in human relationships with earth and water over time, changes which constantly altered the inhabited and cultivated regions of the Fayyum. My main argument throughout is that it was local agency and not state governments that continuously remade the landscape.The history of the Fayyum after the fourth century CE has long been viewed by ancient historians as one of decline from its ancient heights due to the failure of the late Roman and Muslim successor states to properly manage its irrigation system. I locate the genesis of this narrative within nineteenth century perceptions of the docility of nature and the belief that ancient governments had achieved centralized control over the Nile and the Egyptian environment. This anachronistic retrojection of the characteristics of the modern irrigation system has had a considerable afterlife in historical scholarship on Egyptian irrigation. Eschewing a narrow focus on the state, this dissertation argues that that nature is a potent agent in its own right. Ancient farmers could not control nature so they adapted to it, creating four distinct irrigated sub-regions in the Graeco-Roman Fayyum, each tailored to the particulars of the local environment. Our papyri stem from only one of these sub-regions, the water-scarce margins, which lay at the tail end of the irrigation system. Here, inadequate irrigation and fertilization progressively led to soil salinization and degradation, which helped to spur the eventual abandonment of these areas. By the medieval period, only the central floodplain remained inhabited. Only here was sustainable agriculture under the regime of premodern technology possible. Although the Roman state coordinated local labor on the canals, nothing could bind Fayyum villagers to the degrading margins in perpetuity. Fourth century papyri hint that some cultivators had moved to other nomes and were prospering. Still later documents of the sixth to eighth centuries CE reveal greatly increased settlement density in the central Fayyum. Thus, it was local cultivators who made and remade the landscape of the Fayyum over the centuries according to their own needs. Government could both guide and benefit from this local labor but it could never fully control it