<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>This study identifies the rainfall intensity that causes the flood along the arterial road connecting Malang to Surabaya, East Java, Indonesia, estimates flood occurrences based on the recorded rainfall data, and proposes the normalization of the side ditch to reduce flood occurrences. The Nakayasu synthetic unit hydrograph was used to analyze the runoff discharge, and the Hydrologic Engineering Center’s River Analysis System software was used to analyze the water level profile of the side ditch. The regression method was used to determine the relationship between the rainfall intensity and inundation depth along the arterial road. Analysis results show that floods occur if the rainfall intensity is ≥1.01 year return period. To estimate the flood inundation depth, simple linear regression was conducted herein. Furthermore, it was observed that flood occurrences can be avoided by normalizing the side ditch cross section with a fully rectangular shape having a channel bottom elevation equal to the existing elevation.</p>
</abstract>

This study identifies the rainfall intensity that causes the flood along the arterial road connecting Malang to Surabaya, East Java, Indonesia, estimates flood occurrences based on the recorded rainfall data, and proposes the normalization of the side ditch to reduce flood occurrences. The Nakayasu synthetic unit hydrograph was used to analyze the runoff discharge, and the Hydrologic Engineering Center’s River Analysis System software was used to analyze the water level profile of the side ditch. The regression method was used to determine the relationship between the rainfall intensity and inundation depth along the arterial road. Analysis results show that floods occur if the rainfall intensity is ≥1.01 year return period. To estimate the flood inundation depth, simple linear regression was conducted herein. Furthermore, it was observed that flood occurrences can be avoided by normalizing the side ditch cross section with a fully rectangular shape having a channel bottom elevation equal to the existing elevation.

Estimating Flood Inundation Depth Along the Arterial Road Based on the Rainfall Intensity

Civil Engineering Department, Faculty of Engineering

Civil and Environmental Engineering

This work is licensed under the Creative Commons Attribution 4.0 International License.

This study identifies the rainfall intensity that causes the flood along the arterial road connecting Malang to Surabaya, East Java, Indonesia, estimates flood...

Estimating Flood Inundation Depth Along the Arterial Road Based on the Rainfall Intensity

Published Online: Jun 22, 2021

Page range: 66 - 81

DOI: https://doi.org/10.2478/cee-2021-0008

Keywords
Flood inundation, Arterial road, Rainfall intensity, Channel normalization, Return period

© 2021 Agus Suharyanto, published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Estimating Flood Inundation Depth Along the Arterial Road Based on the Rainfall Intensity

Published Online: Jun 22, 2021

Page range: 66 - 81

DOI: https://doi.org/10.2478/cee-2021-0008

KeywordsFlood inundation, Arterial road, Rainfall intensity, Channel normalization, Return period

© 2021 Agus Suharyanto, published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
Flood inundation, Arterial road, Rainfall intensity, Channel normalization, Return period