The Journal of Hydraulic Research (JHR) publishes research papers in theoretical, experimental and computational hydraulics and fluid mechanics, relating to rivers, lakes, estuaries, coasts, constructed waterways, and some internal flows such as pipe flows. To reflect current trends in water research, articles that explore outcomes of interdisciplinary hydro-environment studies with a strong fluid mechanical component are especially welcome. Although preference is given to fundamental issues, papers focusing on important unconventional or emerging applications of broad interest are also appreciated.

IAHR members can access the latest issue online.
Non IAHR members must access through Taylor & Francis website.

 Overview

The second issue of the Journal of Hydraulic Research includes an Editorial, a Vision Paper, eight Research Papers, and a Technical Note. These original contributions advance the current state-of-knowledge on a wide range of subjects in hydraulic engineering that are of interest to the readership of the journal, researchers and practitioners alike. More specifically, the Editorial provides a brief account about the progress that has been made in the overall operation of the journal during the last two years. 

The Vision Paper examines the adverse effects of dams on the fluvial process in large rivers by using the impact of the Three Gorges project on the Middle Yangtze River as a representative example. The themes considered in the Research Papers are: 

• bedload transport dynamics during dam-break flows;

• combined effects of flow rate and square-cylinder size on flow characteristics through an array of staggered emergent cylinders simulating nature-like fishways;

• fluctuating pressure characteristics of dam-break waves impacting vertical structures;

• hydraulic risks at bridges due to vehicle blockage during flash floods;

• geometric characteristics, surface self-similarity, and particle self-organization within three representative imbricated gravel-bed regions in the upper Yangtze River;

• Eulerian monocular photogrammetry method for non-intrusive discharge estimation in submerged spillways;

• use of video and acoustics for tracking the longitudinal velocity of zebra mussel shell movement under varying pipe flow conditions;

• comparative analysis between deep neural networks and conditional generative adversarial networks for estimating the Manning coefficient.

This JHR issue concludes with a Technical Note that considers the effects of vegetation on the stability of shallow jets.

 Research Papers

Experimental characterization of bed evolution and water surface elevation by consecutive dam-breaks using Kinect device
Jose Segovia-Burillo, Sergio Martínez-Aranda, Mario Morales-Hernández, Javier Fernández-Pato and Pilar García-Navarro
Pages 133-152 | DOI: 10.1080/00221686.2025.2602056

Numerical simulation study of flow characteristics through staggered emergent square cylinders in an idealized fishway
Di Zhang, Jiahong Zhang, Xiaotao Shi, Dongfang Liang and Yakun Liu
Pages 153-175 | DOI: 10.1080/00221686.2025.2607656

Pressure characteristics of surge wave impact on vertical walls: a Hilbert-Huang transform-based study with influencing factor analysis 
Tiexiang Mo, Jianmin Zhang and Xiaolong He
Pages 176-191 | DOI: 10.1080/00221686.2025.2611861

Bridge backwater due to vehicles blockage driven by flash floods
Gaogao Fei and Xiekang Wang
Pages 192-208 | DOI: 10.1080/00221686.2026.2613292

Structure and self-organization of imbricated gravel bed surfaces 
Zhang Rangang, Yang Shengfa, Liu Tangzhi, Hu Jiang and Zhang Peng
Pages 209-225 | DOI: 10.1080/00221686.2025.2606942

Eulerian monocular photogrammetry for discharge estimation in submerged spillways
Yixiang Wang, Yaohui Qiang, Dejun Zhu and Danxun Li
Pages 226-247 | DOI: 10.1080/00221686.2026.2620446

Tracking zebra mussel shells in pipes using video acoustics  
Javier Fernández-Pato, Borja Latorre, Javier Burguete, Enrique Playán, Eva Teresa Medina and Nery Zapata
Pages 248-264 | DOI: 10.1080/00221686.2026.2618015

Deep learning and generative moderls to predict Manning resistance
Imed Loukam, Aouatef Hellal, Messaoud Djeddou, Jehad Al Dallal and Ibrahim A. Hameed
Pages: 265-285 | DOI: 10.1080/00221686.2026.2623511

Vision paper

Dam-induced effects on downstream flood and low-water leves in large rivers: insights from the Middle Yangtze River
Junqiang Xia, Heng Zhu and Meirong Zhou
Pages 286-304 | DOI: 10.1080/00221686.2026.2635111

Call for Papers

Call for Papers for Breaching of Earthen Dam and Dike Structures: Lessons Learned from Recent Field, Laboratory, and Numerical Studies
Special Issue Editors: Sandra Soares-Frazão, Sílvia Amaral and Matthew Halso