Integrated Water Management considers various aspects of watermanagement including an extensive historical overview ofwater management and related issues. It includes definitionsintroduction, river basins, introduction to water management,IWRM, water allocations. Provides the reader with insights intothe development of its history, so as to understand the watermanagement system and its integrated approach. In this era, themanagement of water is very necessary as drinking water is shrinking at a very highpace.