Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Incense Route - Desert Cities in the Negev' has mentioned 'Water' in the following places:
Occurrence Sentence Text Source
Ruins of a well laid out water system sourced from underground springs and feeding the bathhouse through a canal to the caravanserai also exist at the site.
Agriculture practiced by the Nabateans in the arid desert conditions where the annual precipitation is of the order 100 millimetres (3.9xc2xa0in), is through a well developed irrigation system consisting of hundreds of small dams, channels, cisterns, and reservoirs which collect flood water.
The agricultural fields have been noted on the river banks and hill slopes in Avdat and central Negev where a very large number of water collection cairns built in stone are present.
The towns were supported by extremely sophisticated systems of water collection and irrigation that allowed large-scale agriculture.
Theyxc2xa0 also display an extensive picture of Nabatean technology over five centuries in town planning and building and bear witness to the innovation and labour necessary to create an extensive and sustainable agricultural system in harsh desert conditions, reflected particularly in the sophisticated water conservation constructions.