Practice Unconfined Aquifer - 36.5.3 | 36. Groundwater Hydrology | Hydrology & Water Resources Engineering - Vol 3
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36.5.3 - Unconfined Aquifer

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is an unconfined aquifer?

💡 Hint: Think about the definition based on layers of rock.

Question 2

Easy

What does drawdown refer to?

💡 Hint: It's about how much lower the water level is after pumping.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is a key characteristic of unconfined aquifers?

  • A. They are capped by impermeable layers.
  • B. They allow gravitational drainage.
  • C. They are always freshwater sources.

💡 Hint: Think about atmospheric pressure.

Question 2

True or False: The storage coefficient typically ranges from 0.1 to 0.3 in unconfined aquifers.

  • True
  • False

💡 Hint: Recall the definitions of storage coefficients.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

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.

Question 2

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.

Challenge and get performance evaluation