| Issue |
E3S Web of Conf.
Volume 517, 2024
The 10th International Conference on Engineering, Technology, and Industrial Application (ICETIA 2023)
|
|
|---|---|---|
| Article Number | 04002 | |
| Number of page(s) | 7 | |
| Section | Hydrology | |
| DOI | https://doi.org/10.1051/e3sconf/202451704002 | |
| Published online | 15 April 2024 | |
Flood management analysis in the Ngasinan River, Trenggalek Regency, Indonesia
1 Jasa Tirta I Public Corp., Jl. Surabaya 2A, Malang City, Indonesia
2 Dept of Civil Engineering, Universitas Muhammadiyah Yogyakarta, Indonesia
* Corresponding author: indra.nurdianyoto@gmail.com
* jazaul.ikhsan@umy.ac.id
Flood event occurs during the rainy season when water volume increases because rainwater flows through the water channel; due to water volume being larger than the water channel capacity, this event can cause flood inundation through residential areas. The Ngasinan catchment at Trenggalek Regency experienced a flood event that affected thousands of lives in October 2022, to reduce the impact of future floods, this study objective carried out recommendation plans for flood management in the Ngasinan River. The Ngasinan catchment hydrology, maximum annual rainfall from 230.0 mm to 585.0 mm, flood discharge design for the Ngasinan river (river length 21.73 km as main river drainage) are Q25 = 318.64 m3/s, Q100 = 394.96 m3/s. Hydraulic simulation using flood discharge design Q25 -Q100 showed that flood occurs in Ngasinan River sections especially those without embankments or at lower river elevations and cross-sections. Recommendation plans for the Ngasinan River flood management are river normalization, river embankment repairs, residential drainage system, and construction of dams/reservoirs/retarding basins, expected to restore the river’s storage capacity due to sedimentation and destructive flood discharge also to reduce flood discharge, protect river channel banks against flood discharge, and prevent overtopping water into nearby land.
© The Authors, published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.