Assessing the impact of climate change on the Medjerda River Basin

Abstract Assessing the availability of water resources in changing climate is needed to meet current and future needs. This paper assesses impact change on Medjerda River Basin (MRB) (shared between Tunisia Algeria) using Water Evaluation Planning (WEAP) model under two climatic scenarios Representative Concentration Pathways: RCP 2.6 6.0. The results showed that demands will increase from 218 Mm 3 2020 395 2050, which means supply be insufficient needs, especially during prolonged periods drought. In addition, shortage MRB increases three times compared with reference scenario, all vital sectors affected by change. Moreover, groundwater storage diffrent areas, 2045 2050. Therefore, national regional stakeholder involvement build an integrated resource management strategy, allocation adaptation plans can addressed assessed each sector experts achieve sustainability.