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Storm Drainage Design Project - Essay Example

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In the study of storm drainage, the analysis of hydrographs are important. A hydrograph plots the river discharge as a function of time. Measurements are done at a certain point in a river. Rainfall is the input used to a watershed and the stream flow is also considered as the output of the watershed…

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Storm Drainage Design Project

This will allow calculations of the response to any input(rainfall). Hydrographs are often affected by factors of soil saturation and the surroundings. The vegetation type and the steepness of the surrounding lands, with the drainage density. Very dry weather, normally creates a crust on river beds and wet winters would increase the discharge. Sand and clay produces a flashy hydrographs but there could be a difference between the two.
In the analysis of the graphs, the bar graph would indicate that the amount of rainfall in the river would cause the river water to rise. We can notice that there is almost a steady flow of water until after a rainstorm. The amount of rainfall is indicated in the bar graph while the rise of water in the river is indicated in the line graph. As the water rises in the river, the height of water is recorded, and the amount of rainfall is computed. Normally the rise of water in a river occurs after a storm rainfall. The discharge is measured at a certain point in a river and is typically time variant. As the line graph is plotted, the part of the hydrograph rises up to its peak and the discharge is seen. The term given to this process in the hydrograph is the rising limb. The decrease of water discharge comes after the rising limb and it is defined as the falling limb. ...
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