The book "Methods of constructing models of currents in pipes and channels" by Seleznev V. E. and Spirals C. N. It is a unique and in-depth study that immerses the reader in the complex world of fluid dynamics and flow modeling. This publication will become an indispensable tool for students, graduate students, engineers and researchers involved in the design and analysis of pipeline and channel systems. The authors, having extensive experience in the field of fluid mechanics and mathematical modeling, offer readers not only theoretical foundations, but also practical methods that will help in solving real problems. The book covers a wide range of topics, including the basic principles of fluid flow, methods of numerical modeling, as well as modern approaches to the analysis and optimization of flow systems. One of the key features of this publication is its accessibility to a wide audience. Despite the complexity of the issues under consideration, the authors skillfully explain the material using understandable language and illustrative examples. This makes the book ideal for technical students as well as professionals looking to update their knowledge or master new techniques in the field of hydrodynamics. The topics raised in the book cover not only technical aspects, but also issues of ecology and sustainable development. In the context of global climate change and growing demands for resource conservation, understanding of the processes taking place in pipelines and canals is becoming especially relevant. The authors highlight the importance of effective water management and flow optimization, making their work particularly valuable for water and wastewater professionals. The book "Methods of constructing models of currents in pipes and channels" stands out among other scientific works due to its practical approach. The authors not only share theoretical knowledge, but also offer the reader many examples and tasks that will help to consolidate the studied material. This makes the publication not just a textbook, but a real manual for practical work. Seleznev V. E. and Spirals C. N. are known for their scientific publications and research in fluid mechanics and hydraulics. Their previous work has also received recognition in the scientific community, which confirms the high level of their expertise. Readers familiar with their previous editions will find familiar approaches and methods in this book, but in a deeper and expanded format. The book will be of interest not only to specialists, but also to anyone who wants to understand how the systems we encounter in everyday life work, from water pipes to sewage systems. It can be an excellent addition to the library of an engineer, researcher or student interested in modern methods of analysis and modeling. In conclusion, “Methods for constructing models of currents in pipes and channels” is not just a book, but a whole world of knowledge that opens doors to the complex and fascinating world of hydrodynamics. Due to the unique style of the authors, the combination of theory and practice, as well as the relevance of the topics raised, this publication deserves the attention of everyone who seeks to deepen their knowledge in the field of currents and flows.