Over the last few decades,it has been noticed that there is an intensive conversion of rural land to urban development like buildings, roads, recreation areas, reservoirs and other manmade structures. As population and land values increase, the effects of uncontrolled runoff become an economic burden and poses serious threat to health and wellbeing of citizens. Management of runoff from even a minor storm is rapidly becoming an engineering requirement to help reducing water logging, flooding and stream erosion. This book, therefore, provide a comprehensive and integrated approach using...

For proper estimation of the quantity of surface runoff generated in a watershed, understanding of the complex relationships between rainfall and runoff processes is necessary.GIS based model systems are increasingly becoming popular tools due to its capability to handle the spatial variation of hydrological and physiographic inputs of the watershed. This book focused on application of a GIS based semi-distributed watershed model (HEC-HMS) in the Woldiya watershed in Ethiopia to establish rainfall-runoff modelling for the determination of important hydrologic design parameters (peak discharge...