A river of discharge of 90 efs with pollutant concentration of 30 mg/l. The river receives a discharge input from a hospital of 10 MGD with pollutant concentration of 200mg/1. After 3 Km from this point, the river receives a discharge of 70 efs with pollutant concentration of 50 mg/l from a factory input at the same river bank, while at about 5 Km from this point a discharge of 100 MGD from another industry carrying a pollutant concentration of 50 mg/l input the river at the opposite side of the river. Find the pollutant concentration downstream and plot a profile for the pollutant concentration.

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Highway Drainage

Highway drainage is the process of extracting and regulating the excess surface water on the pavement by giving the desired slope. The construction of a highway drain helps to divert the water present on the surface, and sub-grade by the means of slope. Highway drainage systems are a necessary part of smooth functioning of traffic, since the highway drainage systems provide proper disposal of unwanted substances from the highways.