Wednesday 28 November 2018

The Nubian Sandstone Aquifer: blessing or a curse?


In all the blogs I have written so far I have talked a lot about water in terms of surface water, in particular river flows and basins have been the water related topics of my blog. Nevertheless there are of course other water resources that people use. One of those resources is an aquifer. This blog will discuss, arguably one of the most important resources of water in North East-Africa: the Nubian Sandstone Aquifer System (NSAS). This blog will try to address the importance of the NSAS for the countries that can benefit from it. Furthermore it will exemplify the agreements the NSAS states have made as well as criticising these agreements.

Figure 1: a map of the NSAS


The definition of an aquifer is rather complex but Mazor (2015) gives us a simple definition of the natural phenomenon. According to Mazor, an aquifer is: “a body of a permeable rock that contains water in all its pores and can sustain producing wells". Because this blog mainly focusses on the way the Nubian Sandstone Aquifer is managed by its riparian states and the importance of the aquifer for their population, a simple definition like Mazor’s is enough.

The NSAS is the world’s largest knows fossil aquifer and underlies the North-African countries of Chad, Egypt, Libya and Sudan (see figure 1) and is therefore home to approximately 136 million people in an area of 2,2 million square kilometres. As I have addressed before in my blog about the GERD, Egypt as well as the other NSAS countries have little water resources and are therefore highly dependent on the Nile river and the Nubian Sandstone Aquifer (NSA) to fulfil in their needs. In fact, the aquifer is vital to the survival of the Egyptians, Libyans, Sudanese and Chadians. Not to mention the populations that are supported by crops and livestock dependent on the aquifer’s water (IAEABakhbakhi, 2006; Maxwell, 2011; Nijsten et al., 2018). One would understand why the aquifer is so valuable for the North African countries and why it’s disputed.

The amount of water that is extracted from the aquifer has increased rapidly in the past decades due to population growth, food demand and economic growth (Bakhbakhi, 2006). Mainly Egypt and Libya rely on the NSAS for agricultural as well as domestic water supply. The aquifer sounds like a gift from god to the thirsty and water scarce countries in the region, however there are some downsides to it. The NSAS is, in some places,  confined while in others it’s not. Besides, the quality of the water varies due to salinity differences. Therefore the aquifer should be regulated and exploited very carefully. Until 2013, the NSAS-countries had no binding multilateral treaty that  governed the usage of the NSAS whatsoever. This was very outstanding and rare in international water law (Maxwell, 2011; Nijsten et al., 2018; Daily Maverick, 2018).

The necessity of binding agreements

The NSAS region is politically very unpredictable. Under constant political instability water scarcity issues become even more important. To illustrate, the fighting in Darfur in 2011 and the independence of South Sudan was largely due to water access issues. Another example of a previous conflict in the NSAS region is about the Aouzou Strip in the border area of Chad and Libya. The Aouzou strip contains a part of the NSAS. Chad and Libya have spent years in an armed conflict about who could exercise sovereignty over the strip. A binding agreement of cooperation could acknowledge the culture of struggle the NSAS states face and start solving sovereignty problems the region faces (Maxwell, 2011).

Furthermore, Maxwell (2011) argues that the economic/wealth disparities between the NSAS states have the potential to influence the stability of the NSAS. Along with deep-seated political instability and the disadvantages in natural resources this demonstrates the high necessity of binding agreements between the NSAS states.

Agreements

Despite not having a binding multilateral treaty between the NSAS States, the states have been cooperating through agreements from 1992 until present day. The Joint Authority for the Study and Development agreement, dating back to 1992, was the first step in cooperation. This agreement, amongst later agreements between the NSAS riparian states, includes increased levels of engagement and intensified cooperation. The only instrument the Authority was able to record is an “internal regulation” which set out the internal structure, functions, decision-making and funding of the Authority. Therefore, the agreement carries no provisions regarding the management of the aquifer or groundwater stored in it (Nijsten et al., 2018).

Eight years later, in 2000, two agreements were made to advance the cooperation process among the NSAS countries. These agreements acknowledged and captured the need for regular monitoring, updating and sharing data and information about the NSAS to assure a sustainable use of the aquifer’s water resources. This need of sharing is recorded in the “Programme for the Development of a Regional Strategy for the Utilization of the NSAS”. An even more deepening process of cooperation was recorded in the “Regional Action Programme for the Integrated NSAS Management”. This project aims to develop a regional strategy for integrated NSAS Management and a sustainable long-term usage of the aquifer.

The latest agreement, dating back to 2013, is the so-called Strategic Action Plan (SAP). This agreement binds the NSAS states to take actions for sustainable aquifer management at a later stage and an equitable usage of it (Nijsten et al., 2018).

False hope?

The first binding agreement between the NSAS states might be a big step forward in managing the Nubian Sandstone Aquifer, after all agreements were signed, resulting in an increasing cooperation and equitable usage of the aquifer. However, the agreement is more like a vague aim rather than a well-established measure to keep the NSAS states in line. Therefore the agreements might not be ambitious and affective enough to prevent conflict from happening. Besides that, dependency on the NSAS is likely to increase as a consequence of population and economic growth and Egypt’s water conflict with Ethiopia concerning the Grand Ethiopian Renaissance Dam (GERD) (discussed in two of my former blogs).

Moreover, since water is such a valuable resource as well as very scarce in the NSAS region, and because the population of the NSAS is dependent on the aquifer to even be alive, the possibility that disputes arise is realistic. As I have argued in my first blog of the GERD, Egypt is prepared to go to war over its water resources. The NSAS is such a valuable resource, Egypt, Sudan, Libya and Chad are likely to get in a conflict with each other if access to it diminishes or restricts.

2 comments:

  1. Thank you for introducing me to an area i have limited knowledge of! You stated that 'The NSAS is, in some places, confined while in others it’s not' In which areas is the NSAS confined and what is the impact of the confinement on water scarcity and potentially the cleanliness of the water? You concluded conflicts are likely to rise as result of the NSAS, has there been evidence in the news or other publicly available literature?

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  2. Hey Marie,

    I am glad I could introduce you to something new! Also thanks for the questions. First of all, the confinement of the aquifer. The mostly unconfined part of the aquifer can be found in the southern part of it. The largely confined part can be found in the north.I will upload a picture of the area of the aquifer with a red and a yellow area. The yellow area is largely unconfined, the red part is largely confined.The impact of the confinement is of course the renewability. Areas where the aquifer is renewable are more likely to benefit from the aquifer in the long run as these parts of the aquifer are being recharged, however recharging might not be very fast, exploitation of the aquifer must therefore be managed carefully. Areas where the aquifer is confined are more vulnerable for running out of water. These areas are not recharged and therefore, eventually will dry up. Adequate management of this part of the aquifer might therefore even be more important than for the unconfined part of it.

    In the recent history there have not been conflicts between the NSAS countries over the aquifer. However when scanning the news about the NSAS there is a lot written about the possibility of conflict concerning water from the NSAS. Basically these sources make the same statement I did. Because of the immense importance of the aquifer there will be a risk of conflict. Due to the rising population pressure on water resources is increasing. I don't want to say conflict is going to happen in the future, but we can't exclude the possibility of it. As I have addressed in my blog about the GERD, Egypt has explicitely mentioned it would go to war over water.

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