Abstract
This presentation looks at the environmental history of the Roman province of Egypt, the granary of the Roman Empire. The Nile is the only source of water in this region, its green band easily recognizable on satellite images contrasting with the arid background. The annual flooding of the Nile, fluctuating with the seasons, was therefore of paramount importance to farmers and the central administration, influencing agricultural yields, food security, social stability, as well as tax export levels and grain supplies for the population of Rome and the Roman army. I will present a detailed reconstruction of the annual patterns of Nile flooding during Roman times, covering the period from 30 BC to 299 AD. Using a synthesis of papyrological, epigraphical, numismatic, literary and paleo-environmental sources, this research focuses on the impact of summer Nile floods on the economic and political history of Egypt and the Roman Empire. Water-related conflicts are once again a burning issue in the region with the construction of the great Ethiopian Renaissance dam, exacerbated by climate change, economic development and population growth.