This book provides an updated discussion of some aspects of snow and glacier hydrology, drawing on the results of investigations in recent years in Arctic, Antarctic, Himalayas, Alps, Rocky Mountains, and other mountains of the world. This book is not meant to be an encyclopaedia in its treatment of snow and glaciers. Nevertheless, it is hoped that the book can serve as a source of reference at the senior undergraduate or beginning graduate level and that it will stimulate further interest and research in this important part of the hydrologic cycle. Audience: The book should be useful to those who are engaged in the practice of agricultural and civil engineering, earth sciences, environmental sciences and engineering, ecosystem management, forest and watershed sciences, and others.