The average rainfall for the catchment with the following data is obtained by Theisen polygon method.
|
Station |
Rainfall (cm) |
Area (km2) |
|
A |
10 |
0.22 |
|
B |
12 |
1.06 |
|
C |
15 |
2.34 |
|
D |
20 |
4.03 |
|
E |
25 |
2.03 |
The average rainfall depth (in cm) is __________.
1
15.32
2
16.46
3
16.54
4
18.74