Download or read book An assessment of hydrology and environmental flows in the Walawe River Basin, Sri Lanka written by Smakhtin, Vladimir and published by IWMI. This book was released on 2005 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantification of hydrological processes and water requirements of aquatic ecosystems is required for many projects related to environmental security and efficient water use in agriculture. This also applies to the Asian monsoon region. This paper focuses on the Walawe River basin, located in a semi-arid zone of southern Sri Lanka. The two major reservoirs in the upstream and middle reaches of the river with a total capacity of 486 million cubic meters (MCM) have significantly affected the hydrology of the river, with associated adverse environmental and social consequences.