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AsAlgeria has experienced a significant reduction of water reserves, especially in the western catchment, it is necessary to find an effective way to manage this important resource. Integrated water management (IWM) has gained considerable importance worldwide as it has proven to be very effective in addressing water resource scarcity. This research, conducted in the Mina watershed, aims to identify the current and future water demands of the population by 2040, as well as the needs of the agricultural and industrial sectors using the Water Evaluation And Planning (WEAP) model. Water supplies in all administrative divisions of the Mina watershed were estimated at 120 M·m3 in 2010. Five different scenarios are the subject of this WEAP analysis: population and territory expansion, recycling and reuse of treated wastewater, water shortages, and impact of reservoir storage capacity. According to the reference scenario, the water demand is expected to increase by 140 M·m3. The scenario taking into account population growth and land expansion predicts an increase of 180 M·m3. Wastewater recycling and reduced irrigation may mitigate the water deficit to 120 M·m3 and 110 M·m3, respectively. Surface water exploitation compensates for the scarcities with 12.34 M·m3.

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  • The Mina basin suffers from a lack of water resources.

  • A decision support tool is a system or software designed to help stakeholders make informed decisions regarding the sustainable management of water resources.

  • Preparing scenarios helps to know the problems that can be encountered in order to find their appropriate solutions.

  • According to the completed study, Mina will experience a drought by 2040.

IWA, Mina basin, scarcity, scenarios, water demands, WEAP
© 2025 The Authors
This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (CC BY 4.0), which permits copying, adaptation and redistribution, provided the original work is properly cited (http://creativecommons.org/licenses/by/4.0/).