irrigation – n. system of bringing water to plants for agricultural purposes

zone – n. an area that is different from other areas in a particular way

reservoirs – n. usually human-made lake is used to store a large supply of water for use in people’s homes, businesses, etc.

canal – n. a long, narrow waterway

pattern – n. something that happens in a regular way

drought – n. a long period of time during which there is little or no rain
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