The process, deliberate or inadvertent, of extracting ground water from a source at a rate so in excess of the replenishment that the ground water level declines persistently, threatening exhaustion of the supply or at least a decline of pumping levels to uneconomic depths.
Why is groundwater extraction bad?
The use of groundwater leads to aesthetic and health problems but also causes agricultural and environmental problems. The water quality deteriorates not only by the seawater intrusion but also by the introduction of contaminants into the environment through human or natural activities.
What is groundwater used for?
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 an important component in many industrial processes.
Why do we extract groundwater?
One important reason why groundwater is extracted through wells is to provide drinking water. In fact, groundwater provides drinking water for over 50 percent of the U.S. population, including almost 100 percent of the rural U.S. population.Why groundwater is overused in India?
Groundwater is a highly overused resource because of the following reasons : (a) Due to large and growing population and consequent greater demands for water and unequal access to it. … (c) In the housing societies or colonies in the cities, there is an arrangement of own ground water pumping devices to meet water needs.
What are the effects of groundwater?
- Groundwater depletion will force us to pump water from deeper within the Earth. …
- Large bodies of water will become more shallow from groundwater depletion. …
- Saltwater contamination can occur. …
- As large aquifers are depleted, food supply and people will suffer.
What are the effects of water extraction?
Some human activities, such as pumping water into the ground for oil and gas extraction, can cause an aquifer to hold too much ground water. Too much ground water discharge to streams can lead to erosion and alter the balance of aquatic plant and animal species.
How is groundwater collected?
Ground water can be obtained by drilling or digging wells. A well is usually a pipe in the ground that fills with ground water. This water can then be brought to the land surface by a pump. Shallow wells may go dry if the water table falls below the bottom of the well, as illustrated at right.How is groundwater obtained?
Groundwater is water that gets collected beneath the surface of the earth. The water seeps through the surface and the mud soaks it. Groundwater is procured by drilling or digging a well or by pumping.
How groundwater is formed?Most groundwater comes from precipitation. Precipitation infiltrates below the ground surface into the soil zone. When the soil zone becomes saturated, water percolates downward. … Groundwater continues to descend until, at some depth, it merges into a zone of dense rock.
Article first time published onWhat are the examples of groundwater?
The water that your well draws from under the ground is an example of groundwater. Water that collects or flows beneath the Earth’s surface, filling the porous spaces in soil, sediment, and rocks. Groundwater originates from rain and from melting snow and ice and is the source of water for aquifers, springs, and wells.
What are the types of groundwater?
- Rivers.
- Lakes.
- Natural springs.
- Rain.
- Snow.
- Glaciers.
- Aquifers etc.
Is groundwater fresh water?
Groundwater is fresh water (from rain or melting ice and snow) that soaks into the soil and is stored in the tiny spaces (pores) between rocks and particles of soil. Groundwater accounts for nearly 95 percent of the nation’s fresh water resources.
What type of resource is groundwater?
Renewable and non-renewable water resources Non-renewable water resources are groundwater bodies (deep aquifers) that have a negligible rate of recharge on the human time-scale and thus can be considered non-renewable.
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.
Is groundwater renewable or nonrenewable?
Groundwater is usually removed from the aquifer at a rate much faster rate as compared to its recharge rate which is very slow. Also, the recharging of groundwater by natural or human processes is not reliable. Hence, groundwater is considered a non-renewable resource.
Which area is suitable for groundwater extraction?
The alluvial tract of the Gangetic plain, which extends over 2000 km across central and northern India has the best potential for groundwater extraction in the country.
How can we prevent groundwater depletion?
- Go Native. Use native plants in your landscape. …
- Reduce Chemical Use. …
- Manage Waste. …
- Don’t Let It Run. …
- Fix the Drip. …
- Wash Smarter. …
- Water Wisely. …
- Reduce, Reuse, and Recycle.
What are the major sources of groundwater?
Major sources include industrial and household chemicals and garbage landfills, excessive fertilizers and pesticides used in agriculture, industrial waste lagoons, tailings and process wastewater from mines, industrial fracking, oil field brine pits, leaking underground oil storage tanks and pipelines, sewage sludge …
What protects groundwater?
The Office of Ground Water and Drinking Water (OGWDW), together with states, tribes, and many other partners, protects public health by ensuring safe drinking water and protecting ground water. OGWDW oversees implementation of the Safe Drinking Water Act.
How does water extraction affect the environment?
This injection may increase or decrease groundwater pressure and can lead to negative consequences, such as introducing poor quality groundwater into other formations or changing the flow paths between aquifers, resulting in new connections, pressure changes and the mixing of different groundwater chemistries.
What is groundwater water cycle?
Groundwater is a part of the natural water cycle (check out our interactive water cycle diagram). Some part of the precipitation that lands on the ground surface infiltrates into the subsurface. … Water in the saturated groundwater system moves slowly and may eventually discharge into streams, lakes, and oceans.
How does groundwater leave the ground?
Water moves underground downward and sideways, in great quantities, due to gravity and pressure. Eventually it emerges back to the land surface, into rivers, and into the oceans to keep the water cycle going.
Is groundwater freshwater or saltwater?
Of the remaining 1 percent, almost all of it — about 96 percent — is groundwater, according to the National Oceanic and Atmospheric Administration (NOAA). The rest of our freshwater is found at the surface in streams, lakes, rivers and wetlands.
What consists groundwater?
Water that occurs below the ground and is brought to the land surface by wells or springs is referred to as groundwater. Groundwater comprises 97 percent of fresh water not tied up as ice and snow in polar ice sheets, glaciers , and snowfields. …
What is another word for groundwater?
aquiferphreatic waterporewaterpore water
What is groundwater PDF?
Abstract: Water below the land surface, both from unsaturated and saturated zones, is referred to as groundwater. This source is estimated to contain more than 100 times that available from streams and freshwater lakes.
What is the greatest use of groundwater?
The greatest use of groundwater is irrigation, with about 68% of groundwater used in 2000 being for irrigation.
How clean is groundwater?
Unlike surface water collected in rivers and lakes, groundwater is often clean and ready to drink. This is because the soil actually filters the water. The soil can hold onto pollutants—such as living organisms, harmful chemicals and minerals—and only let the clean water through.
Is groundwater naturally pure?
In other areas groundwater is polluted by human activities. There is no such thing as naturally pure water. … As water flows in streams, sits in lakes, and filters through layers of soil and rock in the ground, it dissolves or absorbs the substances it touches.
