3. Rainfall
o Annual Rainfall
o (25mm in Southern East to 750mm in
North West)
o Total Annual Rainfall is 32BCM
o Contribution to crops is 10-20%
4. Ground water
Water present beneath earth surface, in soil and rock particles.
o Exploitation of Ground Water is 59
BCM
o 40% of total supply is at farm gate.
o Over 900000 Private tube well.
12. River System
The River along with its tributaries is called river system.
o Rises In Tibet, Near Lake Mansarovar.
o Total Length is 2900km.
o Himalayan River
o Majority Part Flows In Pakistan.
Enter India From Ladak Enter Pakistan from Gilgit Baltistan
15. .
List Of Dams In Pakistan
Tarbela Dam
Mangla Dam.
Mirani Dam
Warsak Dam
Hub Dam
Namal Dam
Rawal Dam
Gomal Zam Dam
16. Tarbela Dam
o Tarbela Dam is one of the world’s largest earth and rock filled
Dam.
o It was completed in 1976.
o Biggest Dam after syncrude tailong damn (Canada)
o Total Capacity is 13.69 cubic kilometer
17. Mangla Dam
o 6th largest Dam in the world
o Second largest dam of Pakistan
o Constructed between 1961- 1967.
o Total capacity is 9.12 km3 (7,390,000 acre⋅ft)
o Cost = 1.473Billion
18. Barrages
o A barrage is a type of low head, diversion dam which consists
of a number of large gates that can be opened or closed to
control the amount of water passing through.
o This allows the structure to regulate and stabilize river water
elevation upstream for use in irrigation and other systems.
19. Barrages
o Guddu Barrage
o Sukkur Barrage
o Trimmu Barrage
o Kotri Barrage
o Gaddu Barrage
o Taunsa Barrage
o Chashma Barrage
o Rasul Barrage
o Jinnah Barrage
o Islam Barrage
o Ghulam Muhammad barrage