Morphometric analysis of Ciliwung river and identification of suitable locations to build artificial dams for flood mitigation

• Published in: Environmental quality management 2022-09, Vol.32 (1), p.45-52
• Main Authors: Alatas, Husin, Pawitan, Hidayat, Syafiuddin, Achmad
• Format: Article
• Language: English
• Subjects: agent‐based model; Bifurcations; Ciliwung river; dam; Dams; Density; Economic impact; Environmental management; Environmental quality; Flood control; flood prevention; Floods; Fractal geometry; Fractals; Geographic information systems; morphometric analysis; Prevention; Reagents; Remote sensing; River networks; Rivers; Watersheds
• ISSN: 1088-1913; 1520-6483
• DOI: 10.1002/tqem.21822

Flood caused by overflowing water from river has become a major issue in Southeast Asia, as it has caused economic losses and deaths. Therefore, the present work aims to propose an alternative approach for morphometric analysis of the Ciliwung River Upper Stream (CRU) without the geographic information system technique use for flood prevention strategy application. For the river network simulation, an agent‐based model having several rules in terms of agent, landscaping, and action was adopted. In addition, the river morphometric characteristics, namely, river network, river order, bifurcation ratio, length‐order ratio, fractal dimension, watershed density, and river capacity were estimated. It was found that the proposed technique was able to estimate the river morphometric characteristics of CRU. CRU has the river order, bifurcation ratio, length‐order ratio, fractal dimension, watershed density, and river capacity of 4, 1.1–2.5, 0.6–1.1, 1.84, 0.01 km km–2, and 1,404,060 L, respectively. It was also identified four suitable locations to build artificial dams for flood prevention strategy by employing the presently proposed technique. The proposed artificial dams with heights ranging from 10 m to 25 m demonstrated to have capability to prevent flood in the capital city of Jakarta, Indonesia.