is 20.8 C in the highest parts and 29 C in the lower part.

The watershed is mainly arid lowlands, and has fluctuating temperature and rainfall. Ground cover includes grass steppe, shrub, tree steppe and bare soil with very sparse vegetation. The watershed suffers from severe degradation of the soil and desertification. However, particularly in the upper regions during the periods of high rainfall, it may be subject to flooding.

Hydrology

The main rainy season is from June to September. The dry season is from October to

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