Preethi's CBSE Class 10 Geography - Water Resources

Matkas

Earthen pots

Main causes of water scarcity

Exploitation and excessive use of water. Unequal access to water among different social groups

In India hydroelectric power

Contributes to about 22 percent of the electricity produced

Another reason for water scarcity

Bad quality of water

Pollution of water due to

Domestic and industrial wastes, chemicals and pesticides

What are dams

A barrier across flowing water that obstructs or directs the flow , often creating a reservoir or lake

Uses of dams

Recreation, generating electricity, supplying water for domestic and industrial purposes and flood control

Dams aka

Multipurpose projects

The Bhakranangal

In the sutluj Beas basin project water Is being used for irrigation and hydel power

Hirakud project

In mahanadi basin integrates conservation of water and flood control

Spillway or weir

Is a section through which the water flows through continuously

Types of dams

Embankment dams, timber dams and masonry dams

Jawaharlal Nehru said dams are

The temples of modern India because it would help develop agriculture and this help the growth of the village economy

Social movements caused by dams

Tehri dam Andolan and Narmada Bachao Andolan

NGO

Non governmental organisation

Narmada Bachao Andolan

Save Narmada movement

Narmada Bachao Andolan has

Mobilized tribal people, farmers and human rights activists against the construction of the sardar sarovar dam bein built across the river Narmada

N.B.A focuses on

The environmental issues related to the trees that would be submerged under he reservoir

Big dams have been unsuccessful in

Controlling floods due to sedimentation,

In hilly and mountainous regions

People built Diversion channels for agriculture

Rooftop rainwater harvesting

Commonly practiced to store drinking water, especially in rajasthan

In the flood plains of Bengal

People developed inundation channels to irrigate their fields

In arid and semi arid regions

Agricultural fields were converted to rained storage structures that allowed water to stand and moisten the soil

Places where almost all the houses have underground tanks for storing drinking water

Semi arid and arid regions of Rajasthan, particularly bikaner, phalodi and barmer

How tankas work

Rain fall on these sloping rooftops would travel down a pipe and was stored in underground tankas

Rain water aka

Palar pani

Rainwater is the

Purest form of natural water

Rooms adjoining the tanka

Were constructed in many houses to keep cool during summers

Rainwater harvesting in many households

Gendathur which is a backward village in Mysore.

In water availability India ranks

133

Launching of multi purpose projects

Came about after independence

Classify dams on the basis of height

Low dams, medium dams and high dams

Disadvantage of multipurpose projects

Causes large scale displacement of local communities

Recent Demand of Narmada Bachao Andolan

Poor citizens, especially the displaced people should get full rehabilitation facilities provided by the govt

Two places suffering from water scarcity in India

Gujarat and rajasthan