Mean depth of rainfall over an area may be obtained by 1. Arithmetic mean method 2. Theissen polygon method 3. Isohyetal method
- A1 and 2
- B2 and 3
- C3 and 4
- D1, 2 and 3Correct
Solution
Concept
Mean rainfall
Step-by-step solution
1. Arithmetic mean, Thiessen polygon and isohyetal methods are all used.
Explanation
All three methods are valid.
Why the other options are wrong
Options with fewer methods are incomplete.
Shortcut
All three.
Correct answer: D) 1, 2 and 3