Modelling the impact of climate change on pressurised irrigation distribution systems: Use of a new tool for adaptation strategy implementation

Abstract

Irrigation infrastructures such as pressurised irrigation distribution systems play an important role in the sustainability of agricultural production in the Mediterranean Region, with positive effects on the rural economy. However, because of the observed climate trends and the intensification of agricultural practices, the Mediterranean region is identified as one of the most vulnerable regions to climate change mainly in terms of agricultural water demand and irrigation infrastructures resilience. This study analyses the effect of climate change on an existing pressurised irrigation system, considering two simulated future scenarios for 2050s and 2080s time period. An adaptation strategy was investigated using localised loops to increase the capacity of the existing gravity-fed system without affecting farmers' operation flexibility that characterises on-demand water systems. This relatively cost effective strategy showed an improvement in the hydraulic performance of the system under current and future increase in water demand.