The Indus River forms a natural boundary in Pakistan and has been historically important. After independence from India, Pakistan and India signed a treaty in 1960 guaranteeing Pakistan water from the Indus and its western tributaries. Pakistan subsequently undertook major dam and irrigation projects along the Indus and its tributaries, including the Tarbela and Mangla Dams, to support agriculture and industry. These projects provide the basis for Pakistan's production of crops like cotton and wheat.

1. Rivers & Barrages Of Pakistan
After these massive flooding in Pakistan i was so surprised that very few people
know about the rivers & barrages of Pakistan..
I am Starting this post which will cover complete details about the waters of
the Pakistan.
Also need your help if i miss some thing on this.
The Indus has formed a natural boundary between the Indian Subcontinent and its
frontier with the Iranian Plateau, a region which includes Pakistan's
Balochistan, Khyber Pakhtunkhwa as well as Afghanistan, Tajikistan and Iran. It
has been crossed by the armies of Alexander the Great - His Macedonian forces
retreated along the southern course of the river at the end of the Asian
campaign after conquering what is now Pakistan and joining it to the Hellenic
Empire. The Indus plains have also been under the domination of the Persian
empire and the Kushan empire. The Muslim armies of Muhammad bin Qasim, Mahmud of
Ghazni, Mohammed Ghori, Tamerlane and Babur also crossed the river to strike
into the inner regions of Punjab , Rajasthan and Gujarat.
The word "India" is derived from the Indus River. In ancient times, "India"
initially referred to the region of Pakistan along the eastern banks of the
Indus river, but by 300 BC, Greek writers like Megasthenes applied the term to
the subcontinent which extends further eastward
After the independence of Pakistan, a water control treaty signed between India
and Pakistan in 1960 guaranteed that Pakistan would receive water from the Indus
River and its two western tributaries, the Jhelum River & the Chenab River
independent of upstream control by India. The project, Indus Basin Project,
consisted primarily of the construction of two main dams, the Mangla Dam built
on the Jhelum River and the Tarbela Dam constructed on the Indus River, together
with their subsidiary dams. The Pakistan Water and Power Development Authority
undertook the construction of the Chashma-Jhelum link canal - linking the waters
of the Indus and Jhelum rivers - extending water supplies to the regions of
Bahawalpur and Multan. Pakistan constructed the Tarbela Dam near Rawalpindi -
standing 2743 metres (9,000 ft) long and 143 metres (470 ft) high, with an 80
kilometre (50 mile) long reservoir. The Kotri Barrage near Hyderabad is 915
metres (3,000 ft) long and provides additional supplies for Karachi. The Taunsa
Barrage near Dera Ghazi Khan produces 100,000 kilowatts of electricity. The
extensive linking of tributaries with the Indus has helped spread water
resources to the valley of Peshawar, in the Khyber Pakhtunkhwa. The extensive
irrigation and dam projects provide the basis for Pakistan's large production of
crops such as cotton, sugarcane and wheat. The dams also generate electricity
for heavy industries and urban centres.
Tributaries
Hunza river
Nagar river
Astor River
Balram River
Gar River
Ghizar River
Gilgit River
Gumal River
Kabul River
Panjnad River
Shingo River
Shigar River
Shyok River
Suru River
Swaan River
Tanubal River
Zanskar River
Source: http://www.defence.pk/forums/social-issues-current-events/69510-rivers-

2. barrages-pakistan.html#ixzz2Ps5zhKwv