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| | Ground-water depletion, USGS water science |
 | | If ground-water levels decline too far, then the well owner might have to deepen the well, drill a new well, or, at least, attempt to lower the pump. |
 | | If pumps are used to lift the water (as opposed to artesian wells), more energy is required to drive the pump. |
 | | The well is used for irrigation and public-supply purposes and offers a good visual representation of long-term ground-water declines due to excessive pumping. |
| ga.water.usgs.gov /edu/gwdepletion.html (1462 words) |
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