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India also relies excessively on groundwater resources, which accounts for over 50 percent of the irrigated area with 20 million tube wells installed. India has built nearly 5,000 major or medium dams, barrages, etc. to store the river waters and enhance groundwater recharging. [15]
Irrigation in India includes a network of major and minor canals from Indian rivers, groundwater well based systems, tanks, and other rainwater harvesting projects for agricultural activities. Of these groundwater system is the largest. [ 1 ]
Out of all the water on Earth, saline water in oceans, seas and saline groundwater make up about 97% of it. Only 2.5–2.75% is fresh water, including 1.75–2% frozen in glaciers, ice and snow, 0.5–0.75% as fresh groundwater and soil moisture, and less than 0.01% of it as surface water in lakes, swamps and rivers.
This is an accepted version of this page This is the latest accepted revision, reviewed on 27 January 2025. Water located beneath the ground surface An illustration showing groundwater in aquifers (in blue) (1, 5 and 6) below the water table (4), and three different wells (7, 8 and 9) dug to reach it. Groundwater is the water present beneath Earth's surface in rock and soil pore spaces and in ...
Water resources are natural resources of water that are potentially useful for humans, for example as a source of drinking water supply or irrigation water. These resources can be either freshwater from natural sources, or water produced artificially from other sources, such as from reclaimed water or desalinated water (). 97% of the water on Earth is salt water and only three percent is fresh ...
From 2007 to 2017, the continued exploitation of groundwater caused the groundwater level in India to decrease by 61 percent, according to the Central Ground Water Board (CGWB). [21] The unmonitored and unregulated extraction of groundwater has diminished and contaminated the water resources, and therefore threatens the people who depend on ...
Central Ground Water Board (CGWB), created in 1970 under the Ministry of Water Resources of India, for regulation of ground water development to ensure long-term sustainability. It is responsible for "providing scientific inputs for management, exploration, monitoring, assessment, augmentation and regulation of ground water resources of the ...
India accounts for 13 per cent of commitments in global water aid for 2006–07, receiving an annual average of about US$ 830 million (€620 million), more than double the amount provided to China. India's biggest water and sanitation donor is Japan, which provided US$ 635 million, followed by the World Bank with US$ 130 million.