The co-authors of Hydrology: Principles and Processes explain how their forthcoming book will be an invaluable tool for a variety of students and professionals, establishing a sound understanding of physical and environmental hydrology.

Flood control refers to all methods used to reduce or prevent the detrimental effects of flood waters (wikipedia). Some of the common techniques used for flood control are installation of rock berms, rock rip-raps, sandbags,  maintaining normal slopes with vegetation or application of soil cements on steeper slopes and construction or expansion of drainage channels. Other methods include levees, dikes, dams, retention or detention basins.  After the Katrina Disaster that happened in 2005, some areas prefer not to have levees as flood controls. Communities preferred improvement of drainage structures with detention basins near the sites. 

There are so many misconceptions in the world – and rainwater is no exception. When people think of rainwater, they often think of wastewater, pollutants and even balding! Do you think these ideas are accurate? Whilst such concerns might stem from a common misunderstanding, we seem to accept them as scientific fact.  In this chapter, the truth will be exposed: rainwater is actually extremely clean and safe.

Over the last 30 years a significant number of water and sanitation projects have been implemented in developing countries and billions of dollars has been spendt. Projects have covered rural as well as urban water supply systems, wastewater collection, disposal and treatment systems, and have mainly been financed by international funding agencies such as international banks and international aid organisations. However, unfortunately it is a fact that the number of failures, or non-functioning, of the established systems, outnumbers the number of successes.