Storm Drainage Design Project Master Assignment

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The concept of studying and controlling the behaviour of rivers figured way back in the ancient times. The importance of rivers is realized by considering its life-giving benefits to man. It is the source of fresh water and habitat of fisheries that gave sustenance to people dwelling near it.


Subsequently, irrigation was developed as the need to channel the river's flow arose in order to sustain the crops and livestock. The ancient nomadic nature of man changed to a domesticated one: no longer was there a need to hunt for food. In these modern times, much headway has been made in harnessing the full potential of rivers. For instance, there is now a storage and systematic distribution of potable water from rivers through dams, reservoirs, pumps, and piping systems. Further, irrigation systems are now utilized to nourish plantations and livestock. The destructive nature of rivers in the form of floods is likewise much more minimized through the understanding man has gained in predicting their behaviour. The approach to understanding is both scientific and empirical and uses tools in recording and interpreting pertinent data from observations. This important tool is called the hydrograph. Hydrograph is defined as "..a time record of the discharge of a stream, river or watershed outleta hydrograph is a representation of how a watershed responds to rainfall."1 Hereunder is an example.
A storm hydrograph in particular "..shows the change in the water level from before to after the passage of the storm water through a given location."3 The factors that define the storm h ...
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