|
A = 225 km2
P = 900 mm/yr
Q = 3 m3/s
Total volume of precipitation VP:
VP = 225 km2 × 900 mm/y × (1000 m/km)2 /
(1000 mm/m) = 202,500,000 m3/y
Total volume of runoff VR:
VR = 3 m3/s × 86400 s/d × 365 d/y = 94,608,000 m3/y
Abstracted percentage:
[(VP - VR) / VP] × 100 = 53.28% ANSWER.
|