PERFORMANCE AND ASSESSMENT OF FUTURE WATER MANAGEMENT USING THE WEAP AND RRV INDICATORS IN MAGHNIA MUNICIPALITY, NORTHWESTERN ALGERIA

S. MORSLI, M. HABI

Abstract


The municipality of Maghnia is experiencing increasing pressure on its water resources due to rapid socio-economic development and agricultural expansion. The growing imbalance between supply and demand raises concerns regarding the long-term sustainability of the local water system. To address these challenges, an integrated approach based on the Water Evaluation and Planning (WEAP) system was implemented to simulate water supply-demand dynamics through 2050, incorporating various management options and operational policies affecting municipal demand. Three performance indicators, namely reliability, resilience, and vulnerability (RRV), were employed to evaluate unmet water demand under both anthropogenic and optimized management scenarios. These indicators were subsequently integrated into a composite Sustainability Index (SI) to provide a comprehensive assessment of system performance. Results indicate that under the anthropogenic scenario, agricultural expansion generates substantial unmet demand, leading to low sustainability levels (SI ≈ 0.30-0.40). The domestic and public services sectors exhibit moderate stress, while the industrial sector remains comparatively less vulnerable. In contrast, the optimized scenario significantly reduces unmet demand across all sectors and improves system sustainability (SI ≈ 0.65-0.75), particularly through combined demand management and supply enhancement measures. The findings demonstrate that integrated intervention strategies are essential to mitigate future water deficits and strengthen adaptive capacity. This work provides a robust decision-support framework for sustainable water resource management under increasing anthropogenic pressures.


Keywords


Anthropogenic pressures; WEAP system; Water deficits; Optimized scenarios; Performance indicators; Sustainability Index.

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