The Hydrotechnical Structures . Part 2" written by M. M. Grishin and his colleagues, is a fascinating and in-depth study in the field of hydraulic engineering and design. This publication is a continuation of the first part and continues to reveal the most important aspects related to the design, construction and operation of hydraulic facilities. The book will be especially interesting for students, graduate students and specialists in the field of civil engineering, as well as for anyone interested in modern technologies and methods in hydraulic engineering. The second part of the book covers a wide range of topics, including the design of reservoirs, dams, canals and other structures that play a key role in water management. The authors examine in detail various methods of calculation and analysis, as well as modern design approaches that take into account environmental aspects and sustainable development. An important aspect of the book is the attention to innovative technologies that are introduced into hydraulic engineering, which makes it relevant for practicing engineers and designers. The book is written in accessible language, which makes it understandable even for those who are just beginning their journey in this complex and multifaceted area. The authors use many illustrations, diagrams and examples, which helps readers better absorb the material and apply it in practice. Each section of the book is logically structured, which makes it easy to find the necessary information and return to it in the future. Topics raised in "Hydrotechnical structures. Part 2" covers not only technical aspects, but also issues of ecology, sustainable development and water management. In the face of global climate change and the growing need for water management, the book is becoming an indispensable source of knowledge for professionals working in this field. It emphasizes the importance of an integrated approach to the design and operation of hydraulic structures, which makes it relevant against the backdrop of modern challenges. M. M. Grishin, an author and one of the leading specialists in the field of hydraulic engineering, is known for his deep understanding of the subject and ability to convey complex ideas to a wide audience. His previous works, such as "Hydrotechnical structures. Part 1" has already won recognition among professionals and students. The second part continues this tradition, offering readers not only theoretical knowledge, but also practical recommendations that can be applied in real projects. The book will be of interest not only to specialists, but also to everyone who is interested in the topic of ecology and sustainable development. It can be a great addition to the library of undergraduates, graduate students and faculty, as well as practicing engineers and architects. Readers passionate about topics such as water management, ecology, and engineering will find many useful ideas and solutions in this book. In conclusion, “Hydrotechnical structures . Part 2" is not just a textbook, but a real find for everyone who seeks to deepen their knowledge in the field of hydraulic engineering. Combining theory and practice, the book offers readers a unique perspective on contemporary challenges and solutions in this important field. Do not miss the opportunity to add this valuable edition to your library and discover the world of hydraulic structures from a new side!