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The Global River Discharge (RivDIS) data set contains monthly discharge measurements for 1018 stations located throughout the world. The period of record varies widely from station to station, with a mean of 21.5 years. These data were digitized from published UNESCO archives by Charles Voromarty, Balaze Fekete, and B.A. Tucker of the Complex Systems Research Center (CSRC) at the University of New Hampshire. River discharge is typically measured through the use of a rating curve that relates local water level height to discharge. This rating curve is used to estimate discharge from the observed water level. The rating curves are periodically rechecked and recalibrated through on-site measurement of discharge and river stage.

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Pakistan is geographically situated between China and the Gulf. In order to balance its strategic position against the major security threat of India, Pakistan formed a special and stable strategic alliance with China against common threats since the period of the cold war even though the two countries have neither a political ideology nor political system in common. On the other hand Pakistan established another special relation with Saudi Arabia on the basis of Islamic identity. With its expanding economic capacity, China proposed a project by the name of "new silk road economic corridor" with the intention of expanding and multiplying trade routes with the Middle East and Europe. Within this framework Pakistan is expected to expand the role of an alternative land route that connects the Gulf and China for use if unfavorable emergencies occur in the Malacca route. However, the continuous political uncertainty in Afghanistan after the pullout of US-NATO fighting forces at the end of 2014 and sporadic outbreaks of terrorist acts by Pakistan Taliban in Pakistan have increased China's anxiety regarding Uyghur issues at home. Avoiding military options for the moment, China is trying to find ways to play an active role in the security issues of Afghanistan with help from Pakistan if available. On the other hand, it is noteworthy that the Pakistani government formed in the general election of 2008 completed its full term and transferred authority to the newly elected government in 2013, something never observed before in Pakistan's history. Coincidently, in Afghanistan the presidential election was carried out peacefully in 2014 in spite of the Taliban threat. Although it is too early to make any definite conclusion, constitutional processes, in spite of their defects, reflected to some extent wishes for normal life of the people of Pakistan and Afghanistan who were disgusted with weak governance and the prevalence of terrorism.