Study on the 3D river channel design process based on two periods of ALB data

Abstract

With the spread of 3D-based technologies in river surveying, design, and evaluation, it is now possible to simultaneously consider flood control, the environment, landscapes, and utilities. This will bring solutions for issues in conventional river design, where the environmental aspect is often set as secondary to flood control measures. We conducted a case study to examine the practical efficacy and issues involved with using 3D technologies in a river holding a couple of fine-resolution topographic datasets. Through our study, we identified that they are helpful for building a reliable model set and supporting the introduction of more realistic calculation conditions, such as spatial grain size distribution. However, this approach brings not only better reproducibility but also additional concerns, such as the need to adjust riffle-pool segmentation parameters.