Proactive planning for water distribution system rehabilitation and expansion under long-term uncertainty

Abstract

Long-term planning of water distribution system (WDS) rehabilitation is challenged by multiple sources of long-term uncertainty, under which the deterioration in system performance continues to evolve over time. Traditional rehabilitation approach typically assumes pre-defined intervention timing, which limits the flexibility in the rehabilitation strategy. This may lead to inefficient decisions when future system conditions deviate from expectations, thus reducing the hydraulic reliability of the system. To address this, a proactive planning framework has been developed, which consists of two components: 1) identifying optimal rehabilitation timing through system performance evaluation and ..