Preface: The 4th International Conference of Water Resources Development and Environmental Protection (ICWRDEP 2021)

The 4th International Conference on Water Resources Development and Environmental Protection 2021 (ICWRDEP 2021) was successfully held in a virtual meeting room by Zoom on August 7th, 2021. This conference was initially scheduled to be held offline at Universitas Brawijaya in Malang, East Java, Indonesia. However, it was canceled due to COVID-19 and government travel restrictions, particularly for international participants. Since ICWRDEP has been declared a biannual event and has been ongoing since mid-2020, this event would not be postponed. Moreover, when the call for papers was published, academics and researchers were ecstatic. The ICWRDEP 2021 was organized by Water Resources Engineering Department - Faculty of Engineering - Universitas Brawijaya in cooperation with the Ministry of Public Works and Housings of Indonesia, Miyazaki University in Japan, IHE Delft Institute for Water Education in the Netherlands, and Delft University of Technology (TU Delft) in the Netherlands. The conference topics are River Engineering and Management, Coastal Engineering and Management, Environmental Engineering & Sanitation, Water-Related Disaster Risk Reduction, and Water Resources Engineering and Management and Water-related to Civil, Architectural Engineering. Through the presentation of papers and discussion, the conference provides a platform for researchers, engineers, and academicians to meet and share ideas, achievements, and experiences. This international event is essential in promoting and encouraging practitioners to apply the new concept of water resource development and techniques and enhancing knowledge and understanding with the required specifications of analysis, design, and construction of any engineering concept. We would like to express the most profound appreciation to the Rector of Universitas Brawijaya, the Dean of Engineering Faculty, Keynote Speakers Prof. Eko Winar Irianto from the Ministry of Public Works and Housings Indonesia, Prof. Keisuke Murakami from Japan, and Prof. Dano Roelvink from the Netherlands, International Advisory Board members, organizing committee, and all participants. List Of Committees are available in this pdf.