Chapter 10: Problem 12

Distinguish between renewable and nonrenewable groundwater resources. What are the consequences of overdrawing these two kinds of groundwater?

Short Answer

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Renewable groundwater resources are naturally replenished over time, like lakes and rivers. Nonrenewable groundwater, like aquifers and fossil water, take a very long time to regenerate. Overdrawing renewable groundwater can lead to a lowered water table, saltwater intrusion, and reduced surface water flows. Overdrawing nonrenewable groundwater can lead to land subsidence and reduced water availability for future generations.

Step by step solution

Define Renewable Groundwater Resources

Renewable groundwater resources are those which can be replenished naturally over time through processes like rainfall and snowmelt. Examples include lakes, rivers, and wetlands.

Define Nonrenewable Groundwater Resources

Nonrenewable groundwater resources refer to aquifers and other water bodies that have a slow rate of replenishment. They take a long time (thousands or millions of years) to regenerate because they are often located deep within the earth or are it comes from glaciers. An example is fossil water.

Impact of Overdraw on Renewable Groundwater

Overdrawing renewable groundwater resources can lead to various consequences such as lowering of the water table, leading to wells drying up. It can also cause saltwater intrusion in coastal areas, reducing the quality of water. It can furthermore lead to reduced surface water flows, affecting ecosystems dependent on those water bodies.

Impact of Overdraw on Nonrenewable Groundwater

Overdrawing nonrenewable groundwater results in depletion of the water body as its replenishment rate is slow or almost nil. This can lead to land subsidence or sinking, as the groundwater supports the land structure. It can also lead to reduced water availability for future generations. Due to its long replenishment rate, once depleted, it may not be available for use for thousands, or even millions of years.

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Distinguish between renewable and nonrenewable groundwater resources. What are the consequences of overdrawing these two kinds of groundwater?

Short Answer

Step by step solution

Define Renewable Groundwater Resources

Define Nonrenewable Groundwater Resources

Impact of Overdraw on Renewable Groundwater

Impact of Overdraw on Nonrenewable Groundwater

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