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Q: Select the correct option for the given statements. Statement 1: Runoff is a function of precipitation, intensity, duration and its coverage. Statement 2: The size of catchment has a definite effect on the runoff. More the area, lesser will be the runoff.
  • A. Statement 1 is true and statement 2 is false.
  • B. Both statement 1 and statement 2 are true.
  • C. Both statement 1 and statement 2 are false
  • D. Statement 1 is false and statement 2 is true.
Correct Answer: Option A - Run off–Water harvesting is the collection of runoff for productive use. • It is generated by rainstorms and its occurrence and quantity are dependent on the characteristics of the rainfall event, i.e. intensity duration and distribution or precipitation. • The runoff efficiency increases with the decreasing size of the catchment which means, larger the size of the catchment the larger the time of concentration and the smaller the runoff efficiency.
A. Run off–Water harvesting is the collection of runoff for productive use. • It is generated by rainstorms and its occurrence and quantity are dependent on the characteristics of the rainfall event, i.e. intensity duration and distribution or precipitation. • The runoff efficiency increases with the decreasing size of the catchment which means, larger the size of the catchment the larger the time of concentration and the smaller the runoff efficiency.

Explanations:

Run off–Water harvesting is the collection of runoff for productive use. • It is generated by rainstorms and its occurrence and quantity are dependent on the characteristics of the rainfall event, i.e. intensity duration and distribution or precipitation. • The runoff efficiency increases with the decreasing size of the catchment which means, larger the size of the catchment the larger the time of concentration and the smaller the runoff efficiency.