Occurrence of Attributes in Original Text

The text related to the cultural heritage 'West Lake Cultural Landscape of Hangzhou' has mentioned 'Irrigation' in the following places:
Occurrence Sentence Text Source
He ordered the construction of a stronger and taller dyke, with a dam to control the flow of water, providing water for irrigation and mitigating the drought problem.
At that time, the farmers suffered greatly drought again, due to overgrowth of the weeds at the bottom of the lake clogging the irrigation ducts.