The book "Calculation and construction of curves of water consumption of rivers" by B. N. Juhnowitz is a unique publication that immerses the reader in the world of hydrology and water resources. This is not just a scientific work, but a real find for specialists, students and anyone interested in the management of water resources and river ecosystems. In his book, the author shares deep knowledge and practical methods that will help to understand how to correctly assess and predict water consumption in rivers, which is of great importance for ecology, agriculture and urban planning. The book is intended for a wide range of readers: from undergraduate and graduate students studying hydrology and ecology, to practicing engineers and scientists working in the field of water resources. If you are interested in the topics of sustainable development, environmental protection and efficient use of water resources, then this publication will become a real guide for you. In. N. Juhnowitz uses accessible language and illustrative examples, which makes the material understandable even for those who are just beginning to get acquainted with this topic. One of the key topics of the book is the methodology for calculating supply curves, which allows us to estimate the probability of different levels of water consumption in rivers. This knowledge is critical for water planning, water management and flood protection. The author examines in detail various approaches to constructing these curves, including statistical methods and modern technologies, which makes the book relevant in the face of climate change and growing water needs. Style B. N. Juhnowitz is distinguished by clarity and logic of presentation. It successfully combines theory with practical examples, which allows the reader not only to assimilate the material, but also to apply it in practice. In his book, the author draws on many years of experience in the field of hydrology and ecology, which gives his research additional value. Readers familiar with his other works will be able to appreciate the consistency and depth of his analysis, as well as his pursuit of scientific accuracy. The book “Calculating and Constructing River Water Supply Curves” also raises important questions regarding the impact of human activity on water resources. In. N. Juhnowitz focuses on the need for conservation and sustainable water management, which makes his work relevant in the context of global environmental challenges. Readers interested in ecology and sustainable development will find many useful ideas and recommendations in the book. If you are looking for literature that combines scientific rigor and practical applicability, then book B. N. This will be a great choice.. It can become a basis for further research and development in the field of hydrology, as well as a useful guide for students and specialists. Do not miss the opportunity to immerse yourself in the world of water resources and learn how to properly manage them for future generations.