Source Of Water

A. Surface sources 

Ground Surface All Sources

1. Pond and lake
2. streams and rivers
3. Natural pond
4. storage reservoir
5. Ocean (it's not used for water supply at present)

B. Subsurface Sources

All Underground are subsurface sources

1. Springs
2. Infiltration galleries
3. Infiltration Wells
4. Wells and tube wells

Details Discussion of Sources of Water

A. Surface Sources

i) surface sources mainly upon river.(it's the principal source)
ii) Other sources rain, snow, Hills etc.
iii) Topographic and catchment area important addition rainfall and runoff for important resources.
iv) to type of impurities present in water suspended and dissolved.

B. Subsurface Sources

Most Important Source Of all sources

i) The important sources of water supply.
ii) Not required for treatment.
iii) The Earth from different layer of materials like sand gravel limestone the past through the water.
iv) The content quantity of what are known as layer or aquifer or water bearing Strata.

Hydrologic Cycle

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Rainfall and Her Measurement

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Details of water levels of reservoir

1. Normal Pool level

i) The maximum elevation during the reservoir for water surface will use what is normal operating condition.
ii) The other name of normal pool level is maximum conservation level

2. Minimum Pool level
i) The lowest water surface elevation reservoir is called minimum pool level.
ii) This level are elevation of the lowest outlet in the dam.
iii) Below this level of water cannot be used in any purpose.

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