Managing Water in Thar
Published: Jul 31, 2010
Photo: Prasad
Tanka at Village Bhu, Jaisalmer.
Abstract: Despite sizeable knowledge of water conservation systems, compulsions of modern era developments have gradually turned the Thar poor so far as availability and workable traditional water harvesting systems are concerned. Sadly, it started with groundwater irrigation that turned much of the desert green.
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What is ...
A type of delta formed by the outgrowth of natural river into a body of water to form a
finger-like pattern, reflecting the number of distributary streams.
The cycle of water movement through the earth-atmosphere system, initiated through the acquisition of water vapour by evaporation and transpiration from water and land surfaces released into the atmosphere by condensation and deposited on land and water surfaces by precipitation.
A well achieved by boring down into an aquifer enclosed by an impermeable strata within an artesian basin.
The rights of an owner whose land abuts water. They differ from state to state and often depend on whether the water is a river, lake, or ocean. The doctrine of riparian rights is an old one, having its origins in English common law. Specifically, persons who own land adjacent to a stream have the right to make reasonable use of the stream. Riparian users of a stream share the streamflow among themselves, and the concept of priority of use (Prior Appropriation Doctrine) is not applicable. Riparian rights cannot be sold or transferred for use on non-riparian land.
A reduction in water quality caused by increasing its temperature, often due to disposal of waste heat from industrial or power generation processes. Thermally polluted water can harm the environment because plants and animals can have a hard time adapting to it.
The lowest cold water layers at the bottom of a thermally stratified lake or ocean. Lake stratification is the separation of lakes into epilimnion (top layer), thermocline (middle layer) and hypolimnion (bottom layer).
Spread over an area of 9630 sq.km, Sunderban is the largest delta in India and has been declared as the UNESCO World Heritage Site in 1997. The delta primarily consists of mangrove forests covering its 54 tiny islands, most of which are crisscrossed by innumerable brackish distributaries of the river Ganga.
The line on a map joining points in the ocean having the same degree of salinity.
A flood caused by the sudden release of an ice-dammed or englacial lake, often with disastrous consequences is known as a Jökulhlaup - an icelandic term, where these outbursts are
not uncommon.
The deep clear water body which has a low nutrient content and is therefore unable to support large aquatic flora and fauna.
A type of cloud, dark grey in colour, occurring in sheets thick enough to blot out the Sun. Low tagged fractus clouds frequently occur beneath its base, which occurs between 900 and 3,000 m i.e. at low altitudes.