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Chapter 9 Water Resources

Chapter 9 Water Resources. Usable Water is Rare. Groundwater. Aquifers- small spaces found within permeable layers of rock and sediment where water is found. Unconfined aquifers- an aquifer that is simply porous rock covered by soil.

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Chapter 9 Water Resources

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  1. Chapter 9 Water Resources

  2. Usable Water is Rare

  3. Groundwater • Aquifers- small spaces found within permeable layers of rock and sediment where water is found. • Unconfined aquifers- an aquifer that is simply porous rock covered by soil. • Confined aquifers- an aquifer surrounded by a layer of impermeable rock or clay.

  4. Groundwater • Watertable- the uppermost level at which the water in an area fully saturates the rock or soil. • Recharge- the input process of water percolating into an aquifer. • Springs- water from an aquifer that naturally percolates up to the surface.

  5. Groundwater • Cone of depression- an area where there is no longer any groundwater.

  6. Groundwater • Saltwater intrusion- when the pumping of fresh water out of a well is faster than the recharge. Near coastal areas this can cause salt water to infiltrate the aquifer.

  7. Aquifer Depletion Groundwater Overdrafts: High Moderate Minor or none Fig. 11-14, p. 246

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