Analysis Of The Bangkir Moving Dam As A Flood Control Measure In The Indramayu Regency Area

Farrel Arkananta Riyanto (Universitas Swadaya Gunung Jati, Indonesia)
Mashadi Putra (Universitas Swadaya Gunung Jati, Indonesia)
Kahfi Anwar Ghiffary (Universitas Swadaya Gunung Jati, Indonesia)
Nurdiyanto Nurdiyanto (Universitas Swadaya Gunung Jati, Indonesia)

Journal Of World Science
Vol. 4 No. 10 (2025): Journal of World Science

This study analyzes the capacity of the Bangkir Movable Dam as a strategic solution to control flooding downstream of the Cimanuk River in Indramayu, which often occurs due to river overflow. This quantitative study uses rainfall data over a 10-year period (2015–2024) to calculate the design flood discharge, with the Weduwen method selected as the primary reference due to its most conservative estimates. The analysis results determine the 50-year return period flood discharge (Q50) at 599.58 m³/s. Meanwhile, the total dam capacity, calculated using the Sharp-Crested Weir method, reaches 1,329.68 m³/s. The comparison shows that the existing dam capacity is significantly larger than the planned flood discharge. Thus, the Bangkir Movable Weir is considered effective and capable of controlling floods for a return period of up to 100 years, thereby reducing the risk of flooding in the Indramayu region.