Irrigation Engineering:
The field in civil engineering in which the laws of applying water to land
by artificial means are applied is usually termed as irrigation engineering.
Importance:
With the world’s population increases
rapidly and to match their need of food irrigation engineering is likely to
become the science of survival. There are quite some areas where the land is
fertile but there is not enough water for its irrigation so it is through the
artificial methods of the irrigation engineering that those areas of the world
can be supplied with water and they can become an essential part of the food
chain.
Components of irrigation system:
Ø
Storage or diversion
Ø
Conveying of irrigation water
Ø
Distribution and application of irrigation areas
Ø
Drainage of the excess water
3 big water storages of Pakistan:
Ø
Terbela Dam
Ø
Mangla Dam
Ø
Warsak Dam
Mangla Dam:
Location
Azad Kashmir
Purpose
irrigation /power
Reservoir area
100
sqmiles
Power generation
1000 MW
Capacity
1400 MW
Design flood discharge
1,100,00 cusic
Total storage capacity
5.88
MAF
INDUS BSIN IRRIGATION SYSTEM
(Schematic diagram)
Relatively small water storages of Pakistan:
Chashma Barrage:
River
Indus
Desired discharge
110,000,00 cusec
Total width between embankments
3556 ft
Max. Flood level
649.00 spd
Crest level
622.00 spd
Year of construction
1971
Design width of canal
26,700 cusec
Marala barrage:
Max design discharge
1,100,000 cusec
Total width between abutments
4,472.33 ft
Max flood level
816.7ft
Design width drawl for canal
38,500 cusec
Year of construction
1968
Artical
by: Engg. Hafiz M yousaf(00-C-679)
Edited/published/drawings by: Engg.Fahed Javaid (02-C-1009)