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10 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Natural outflow of ground water at earth's surface |
1. Spring |
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Quantity : |
Small and unsuitable |
Only in hilly areas |
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Rise of groundwater which overflows through the side of natural valley or depression(fig) |
a. Gravity Spring |
Both quality and quantity varies |
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b. Surface spring |
Impervious layer becomes inclined and water goes up and gets exposed to ground surface |
Quantity : unknown Quality : good |
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c. Artesian spring |
When water is flowing through confined aquifer(fig) |
Quantity : uniform and higher yields |
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2. Wells |
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a. Open well |
Low discharge |
Bore hole |
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b. Shallow well |
Draws water from lower strata Yields more quantity of water |
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2. Tube well |
Large discharge mechanically |
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a. Cavity type tubewell |
b. Strainer type tubewell |
c. Slotted type |
