36.5.3 - Unconfined Aquifer
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Practice Questions
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What is an unconfined aquifer?
💡 Hint: Think about the definition based on layers of rock.
What does drawdown refer to?
💡 Hint: It's about how much lower the water level is after pumping.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is a key characteristic of unconfined aquifers?
💡 Hint: Think about atmospheric pressure.
True or False: The storage coefficient typically ranges from 0.1 to 0.3 in unconfined aquifers.
💡 Hint: Recall the definitions of storage coefficients.
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Challenge Problems
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A farmer extracts water from an unconfined aquifer at a rate of 150 liters per minute. The aquifer has a storage coefficient of 0.25 and average rainfall contributes 100 liters per minute back to the aquifer. Assess the sustainability of this extraction rate.
💡 Hint: Think about recharge versus discharge.
If the water table in an unconfined aquifer drops by 5 meters due to extended drought, and it previously was 15 meters deep, calculate the new water table level. Discuss the potential risks associated with prolonged drought on water resources.
💡 Hint: Simple subtraction reveals the new depth.
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