Delivers water for crops using canals and efficient methods.
Irrigation delivers water via canals, sprinklers, drip and furrows. Crop water requirement from evapotranspiration (ET₀×K_c); efficiency: drip 90%, sprinkler 75%, surface 50–60%. Canal design handles silt (regime theory). Drainage and salinity control keep land productive.
Drip irrigation saves 30–50% water compared with flooding.
Irrigation delivers water to crops efficiently, which matters where rainfall is unreliable and water is scarce.
Delivers water for crops using canals and efficient methods.
Irrigation delivers water to crops efficiently, which matters where rainfall is unreliable and water is scarce.
It applies water directly to the root zone, which reduces losses from evaporation and runoff and saves water.
Excess water can raise the water table and cause waterlogging and salinity, which harm crops.
Typical applications include designing a drip system for an orchard to save water, planning a canal network for a large farm area and choosing sprinklers for a field with variable terrain.
Study "Groundwater and wells" first (topic 88 of 112 in Civil & Structural). It covers the groundwork this topic builds on.
Duty and delta. Command area. Water-user associations.
Drip irrigation saves 30–50% water compared with flooding.
The next topic is "Flood management", which builds directly on this one.
It is classed as Advanced in Civil & Structural (topic 89 of 112). It is an advanced topic. It assumes you are comfortable with the intermediate topics in Civil & Structural.
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