Storm drainage design project Essay Example | Topics and Well Written Essays - 1500 words

Storm drainage design project - Essay Example Hydrograph analysis is also used to explain various river behaviors such as how a watershed responds to rainfall and how lag time is related with other parameters such as soil conditions and geology. It also helps in finding out discharge patterns of a particular drainage basin and helps engineers and planners to assess the potential of a river to flood and predict flooding events, therefore influence implementation of various flood prevention measures by means of water supply pipelines or channels, dams etc. This paper critically analyses hydrograph for Thaw River and assess various factors that determine a river’s potential to flood. It investigates the chances of taking water supply from the river by means of a pipeline or channel. The paper also discusses different design considerations for such pipeline or channel. Hydrologic mathematical models for flood prediction and management involve complex mathematical calculations. They represent a system’s physical behavior in terms of mathematical equations. In this sense, any hydrological analysis heavily relies on the data related to river and river basin. Though evapo-transpiration, effect of the stream-aquifer interaction, effects of other hydrologic processes such as interception and depression storage are altogether ignored for analysis (Ramà ­rez, 2000), other parameters should be appropriately measured for a relevant hydrological analysis. Appropriate topographical data for watercourse such as information on structures, water drainage routes, potential blockages / obstructions to drainage is necessary for considering the effects of various factors on river flow. Catchment shape and gradient: It determines the time taken by rain water to route in to river. A clear ‘V’ shaped catchment with sharp gradient gives flash floods and a steeper