Question

Which of the following is true when consideridg hydrographs? a) The peak precipitation rate coincides with the peak discharge b) The discharge graph will be sharper (meaning have a higher peak) in a rural area as opposed to an urban area c) The majority of the water entering the stream is directly from atmospheric water d) None of the above statements are true

Answer 1

Answer: Option (A)

Explanation: The graph that shows the water flow rate with respect to time about a distinct point in rivers and streams is called a hydrograph.

In case of a hydrograph, the peak precipitation rate shows the peak discharge. This means that due to a peak precipitation or rainfall in a particular area, the water discharging rate will subsequently increase. It is because of the gradual increase in surface water run off that would reach its maximum limit within 9-10 hours.

Higher precipitation leads to the higher discharge of water by the streams and river channel.

Thus the correct answer is option (A).