Quick Answer: What is the need of groundwater sources in India?

More than 90 percent of groundwater in India is used for irrigated agriculture. The remainder — 24 billion cubic meters — supplies 85 percent of the country’s drinking water. Roughly 80 percent of India’s 1.35 billion residents depend on groundwater for both drinking and irrigation.

Why do we need ground water?

Groundwater supplies drinking water for 51% of the total U.S. population and 99% of the rural population. Groundwater helps grow our food. 64% of groundwater is used for irrigation to grow crops. … Groundwater is a source of recharge for lakes, rivers, and wetlands.

What is groundwater resources in India?

As per the report, the Annual Replenishable Ground Water Resource for the entire country is 433 billion cubic metre (bcm), Net Annual Ground Water Availability is estimated as 399 billion cubic metre whereas the Annual ground water draft for irrigation, Domestic & Industrial was 231 billion cubic metre and their Stage …

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How much groundwater does India use?

India uses or consumes more than 600 billion cubic meters (158 trillion gallons) of water annually. Of that amount, 245 billion cubic meters are drawn from aquifers.

What are the important water resources of India?

There are four major sources of surface water. These are rivers, lakes, ponds, and tanks. In the country, there are about 10,360 rivers and their tributaries longer than 1.6 km each. The mean annual flow in all the river basins in India is estimated to be 1,869 cubic km.

Why is groundwater important to the water cycle?

Groundwater is an important part of this continuous cycle as water evaporates, forms clouds, and returns to earth as precipitation. Surface water evaporates from by energy of the sun. The water vapor then forms clouds in the sky. … Other precipitation seeps into the ground and is stored as groundwater.

Why aquifer is important in groundwater source?

When a water-bearing rock readily transmits water to wells and springs, it is called an aquifer. … Worldwide, 97% of the planet’s liquid fresh water is stored in aquifers. Major aquifers are tapped on every continent, and groundwater is the primary source of drinking water for more than 1.5 billion people worldwide.

What is groundwater resources?

Groundwater is the largest source of freshwater for mankind. … Groundwater is often hidden deep in aquifers, permeable rocks and sediments and is extracted using pumping wells. Often, aquifers can be renewable water resources, slowly replenished by rainfall infiltration over hundreds up to many thousands of years.

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What is the condition of groundwater in India Class 10?

Groundwater is the water present below the earth’s surface and is a vast resource of water. Almost 22 percent of water is below the surface land in the form of groundwater.

Porosity and Permeability Ranges for Sediment:

Sediment Type Porosity Permeability
Clay 33-60% Low

What is the main problem with groundwater in India Class 10?

Ground water level in India has become scarce due to its overuse. Moreover, it is getting contaminated due to use of excessive chemicals and fertilisers in agriculture, dumping of industrial wastes, rapid urbanisation and increase of sewage disposal in water etc.

What are the main groundwater quality problems in India?

Geogenic Contaminants

Presently, fluoride (F although “fluoride” is used here to reflect complex aqueous chemistry), As, iron (Fe), and salinity (predominantly chloride [Cl] salts) are the main geogenic groundwater quality problems in India with arsenic and fluoride posing the largest threat to public health.

Which is the biggest source of water in India?

2. Surface Flow:

Name of River Origin Basin Area in India (in sq km)
1. Ganga Gangotri Glacier, Uttar Kashi 8,61,404
2. Indus Mansarovar Lake, Tibet 3,21,290
3. Godavari Nasik, Maharashtra 3,12,812
4. Krishna Mahabaleshwar, Maharashtra 2,58,948

What is need and importance of water resources?

Water resources are sources of water that are useful or potentially useful to humans. It is important because it is needed for life to exist. Many uses of water include agricultural, industrial, household, recreational and environmental activities. Virtually all of these human uses require fresh water.

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What are the important source of water in North India?

Major river systems in the north are the perennial Himalayan rivers – Ganga, Yamuna, Indus and Brahmaputra. The south has the non-perennial but rain fed Krishna, Godavari, and Cauvery while central India has the Narmada, Mahanadi and Tapti.

What is the importance of water resources projects for a tropical country like India?

With the country already experiencing water stress, there is need to augment both water supply in water-rich regions lacking infrastructure and manage water demand in water-scarce regions. Groundwater plays an important part in India’s economy.