Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Lower Valley of the Awash' has mentioned 'Drainage basin' in the following places:
Occurrence Sentence Text Source
It is the principal stream of an endorheic drainage basin covering parts of the Amhara, Oromia and Somali Regions, as well as the southern half of the Afar Region.
Map of the Awash drainage basin