The book "Stochastic model of fluctuation of river flow" by Christophorov A. In. and his colleagues is a unique study in the field of hydrology and mathematical modeling, which will be of interest to both specialists and students studying water resources and their dynamics. This edition opens to the reader the world of complex processes occurring in river systems, and offers new approaches to their analysis and prediction. The main theme of the book is to study the fluctuations of river flow, which are important for water management, ecology and flood protection. The authors propose a stochastic model that takes into account random factors affecting the level of river runoff. This makes it possible to more accurately predict changes and develop strategies for water management, which is especially important in the face of climate change and an increase in the anthropogenic load on ecosystems. The book will be of interest not only to professional hydrologists and ecologists, but also to students studying related disciplines such as geography, ecology and engineering sciences. It can be a useful tool for graduate students and young scientists working in the field of water resources and mathematical modeling. Readers interested in sustainable development and environmental protection will also find much useful information in this book. One of the key topics raised in the book is the impact of climate change on river flow. The authors examine in detail how changes in temperature, precipitation and other climatic factors can affect the level and fluctuations of river flow. This makes the book particularly relevant in light of the global environmental challenges facing humanity. In addition, the work addresses water management issues, which is an important topic for many countries striving for sustainable development. The style of the author is characterized by scientific rigor and clarity of presentation, which allows readers to easily assimilate complex concepts. Christophorov A. In. He has already established himself as an author capable of combining theory and practice, and in this book he continues this tradition. His previous works, such as “Modeling Hydrological Processes” and “Environmental Aspects of Water Management”, have also been recognized in academia and may be useful for a deeper understanding of the topic. The book "Stochastic model of fluctuation of river flow" will become an indispensable source of knowledge for those who want to understand the complex processes occurring in the river ecosystem, and learn to use mathematical models for analysis and forecasting. It provides the reader with an opportunity not only to get acquainted with modern research methods, but also to think about the importance of preserving water resources for future generations. If you are looking for literature that combines a scientific approach and practical significance, then this publication will be a real find for you. It will not only expand your knowledge in the field of hydrology, but also inspire new research and discoveries. Do not miss the opportunity to immerse yourself in the world of stochastic models and discover new horizons in the study of river flow!