Describe the classification of intakes

Intakes are classified in the following three bases:

A) Bases on intake top under or above water level

1) Submerged intake

If the intake structure is constructed entirely under the water then the intake is called submerged intake.

2) Exposed intake

If the intake structure is constructed near or away from banks of water bodies then the intake is called exposed intake.

B) Based on water retain in the housing structure

1) Dry intakes

If there is no water in the water tower then it is called dry intake. In dry intake, water enters through the entry pot and is directly sent into the conveying pipes but operation valves are used.

2) Wet intakes

If there is water in the water tower of intake then it is called wet intake. In this water level is practical remains as same as the level of the source of supply.

C) Based on types of source

  1. River intake
  2. Reservoir intake
  3. Lake intake
  4. Spring intake
  5. Canal intake
  6. Stream intake

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