irrigation water
Water supplied for agricultural irrigation, typically via canals or pipes.
In this region, irrigation water is in short supply.
Farmers draw irrigation water from the river.
農業用水 is a broader term for agricultural water, which may include water for livestock or washing, while 灌漑用水 specifically refers to water for irrigating crops.
Standard kanji spelling. 灌漑 means irrigation, 用水 means water for a specific purpose.
Variant with 潅 instead of 灌. 潅 is a simplified form sometimes used in print.
Compound of 灌漑 (irrigation) and 用水 (water for a specific use). The kanji 灌 means 'to pour' or 'to irrigate', and 漑 also means 'to irrigate'. 用水 is a common suffix for water used for a particular purpose.