39.2 - Duty (D)
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Practice Questions
Test your understanding with targeted questions
What is the formula for Duty (D)?
💡 Hint: Use the terms Area and Discharge.
Define Gross Duty.
💡 Hint: Think about the water measurement at the start.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does Duty (D) represent?
💡 Hint: Think about water allocation to crops.
Is Net Duty the same as Gross Duty?
💡 Hint: Remember the definitions of both terms.
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Challenge Problems
Push your limits with advanced challenges
Calculate the Duty for an irrigation system that discharges 15 cumecs and serves an area of 45,000 hectares. What is Delta if the base period is 60 days?
💡 Hint: Follow the Duty formula for the first part and the Delta relationship for the second.
Discuss the impact of soil type on Duty and how different irrigation methods can mitigate low Duty in sandy soils.
💡 Hint: Consider characteristics of different soil types.
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