Hitherto, I explained on the one hand water management solutions, which
were mostly quite small and may not have the power to rescue the lake. Or on
the other hand solutions, which were most likely too big to realize, for
example the Inter-basin Water Transfer Project. Therefore, I want to
concentrate in this post again on the causes of the drying and in particular
which causes could be changed.
The effects of climate change may be important for this area, but cannot
be solved from the local people. Hence, I will more focus on the man made
factors, which could be changed from the local people. For instance,
agriculture and irrigation and how they influences the river recharges of the
lake. Which are according to Rititingar et al. (2012) on of the most important
causes for the shrinking of the lake.
But not only the dropping of water levels are a problem, which are
generated by irrigations schemes. In addition, if you look at the Southern Chad
Irrigation Project (SCIP), which should provide 67,000 hectares with water, you
will a different kind of problems. Because the project ran out of water, the
canals dried up and were taken over by an invasive plant species. (Rititingar et al. 2012)
By looking at the geographical position of the lake, in particular by
looking at the two main rivers, which are providing the lake with water. The Komandugu-Yobe
River and the Chari-Logone River are both coming from relatively tropical and
therefore rainy areas. Both rivers are providing, before ending in the lake
Chad, many cities and wetlands with water. On account of that could be a
potential in just increasing the river flow.
Figure 9: Tschierschke, K. 2002
In general, an even more complicated solution, because more stakeholders
are involved, but with the trans boundary organisation LCBC, it could be the
most powerful stakeholder. I am going to verify or falsify this personal idea in
my next post by looking more specifically on the wetland areas of the Chari-Logone River and the Komandugu-Yobe
River.
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