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Answer:

How is a dam prepared

1. First, we need to start with diverting the river.

2. Second step includes laying the foundation of the dam.

3. Third step will be to start the building of

dam

4. The reservoir needs to be filled in the next step.

5. Testing the working of dam.

6. Checking if the valves and the

floodgates work properly. 7. Monitoring the behavior of the newly built dam.

Water storage in dams

•Dams are used to store water. Water is stored as a reservoir behind the dam.

• Dams are constructed on a river, and they work as an obstruction for the water of the river flowing downwards. Thus, creating a reservoir behind the dam storing water.

Watershed

• A common reservoir in which the water from several resources is stored.

• The resources can be diverted rivers, water from lakes or any other source.

.• The water from all these is stored at a single place that acts as a reservoir.

Water Distribution

The water that is stored in the dam are then distributed.

The water stored in the dam can be used for various sources.

• It can be distributed to industries, to farms and households and any other area where the basic and important requirement is water.

Electric Power Generation

⚫ the electricity produced by the water stored in the dam is called hydroelectric power.

The water in a dam is stored at a height i.e., almost equivalent to the height of the dam.

The water at this height has some potential energy.

. When the dam is opened, the potential energy is converted to kinetic energy and there are meters that this running water having a great energy rotates.

In this way electrical energy is produced with the help of hydro energy of water.

Answer:

needs/ important of dam:- A dam is a barrier that is usually built across a river, a stream, or an estuary to retain water and the purpose to build a dam is to provide water for irrigating, Hydroelectric power plants, human daily uses, or for use in industrial processes. The dam is also used to reduce peak discharge of floodwater created by large storms or snowmelt, sometimes by operating the water level of dams, its helps to increase the water depth of a river in order to improve navigation by which ships can travel more easily. To generating hydroelectric power, dams are used to increase the amount of water available.

hypothesis:-For the present study the hypothesis can be set as In the process of rehabilitation of dam affected settlements, both positive and negative changes have been occurred in the socio-economic aspects of such settlement

work plan:

work plann of dams are :

(1) nitial screening is conducted based on river profile and topographic maps.

(2) Reconnaissance plan is developed using only already available data.

(3)Pre-feasibility plan is developed with a little exploration and additional field data

(4) Dams can be used to store water, control flooding, and generate electricity

description of actual procedure:

Dams act as the place where water is held back and released in a controlled manner through hydraulic turbines, enabling the mechanical energy of the water to be transformed to reservoir where water is stored at a given hight.