Rainwater harvesting as governments public policy decision. Rainwater harvesting in hindi pdf article on rainwater harvesting in hindi language purchase order in sap mm pdf of india. Out of the total volume of water available on the surface of the earth, only 2. The conventional water sources namely well, river and reservoirs, etc. Category a minimise the use by change in our habits of using water conservative use of water.
Rainwater harvesting consultants rainwater harvesting. Water is one of the essential ingredients to sustain life. One method of rainwater harvesting is rooftop harvesting. Rainwater harvesting entails the collection of rain where it falls in a scientific and controlled manner for future use. Traditional water harvesting systems the various civilizations of the world such as egyptian, mesopotamian, indus valley etc. It is the term used to indicate the collection and storage of rain water used for human, animals and plant needs. Water is the most common and major substance on the earth, covering more than 71% of its surface. One of the earliest sites of the indus valley civilisation, dholavira in the gujarat state has well documented storage reservoirs in the form of lakes to collect surface run offs during the rainy season 1. Some of the contemporary practices being adopted to harvest rain. Manual on rainwater harvesting has been developed as part of an initiative by the karnataka state council for science and technology to promote large scale rainwater harvesting in urban areas. The technology of rain water harvesting can be divided according to the purpose and the source of collecting water. With rainfall patterns changing almost every year, the indian government has started looking at means to revive the traditional systems of water harvesting in the country. Western ghats, surangam, horizontal well, kasargode, kerala. Traditional water harvesting systems provide very simple, ageold, timetested solutions to the water scarcity problems that farmers have been facing in.
Surangam kasaragod district in the northern malabar region of kerala is an area whose people cannot depend directly on surface water. Water harvesting and its utilization is one of the major components of the watershed development programs which is realized through. What is rainwater harvesting, its importance and various. Management and water harvesting as t groundwater augmentation. Roof top rain water harvesting depends upon the amount of rainfall and the roof top area. Artificial recharge, water level, dugwells, sacred groves, pond, surangam. Rain water harvesting presentation linkedin slideshare. Roof top rain water harvesting can be a very effective tool to fight the problem of water shortage particularly in urban areas. How traditional knowledge can save us from water scarcity. With rooftop harvesting, most any surface tiles, metal sheets, plastics, but not grass or palm leaf can be used to intercept the flow of rainwater and provide a household with high. Rain water harvesting in uk in the united kingdom, water butts are often found in domestic gardens to collect rainwater, which is then used to water the garden. Tunnel well is a traditional water management system used to provide a reliable supply of water for human settlements and irrigation in kasargod district of kerala and dakshin kannada district of karnataka, india. Due to lack of surface and ground water resources some locations, alternative drinking water supply facilities need to be promoted among people in sri lanka in order to achieve the mgds.
The traditional wisdom of our people in rainwater harvesting, can. Tamil nadu government today announced a slew of measures to augment civic infrastructure, including drinking water resource protection, rainwater harvesting, solid waste management plans, sewage treatment plant besides plan to encourage nonmotorised transport. The sri lankas target is to provide drinking water supply to all citizens by year 2025. When we say rainwater harvesting, the first thing that comes to our mind is the terrace. The suranga are traditional adit water harvesting systems that tap. Effectiveness of rain water harvesting rwh systems as a. Rainwater can be collected from rivers or roofs and redirected to a deep pit well, shaft, or borehole, aquifer, a reservoir with percolation, or collected from dew or fog with nets or other tools. Rainwater harvesting in ancient times and its sustainable. With depleting groundwater levels and fluctuating climate conditions, rwh can go a long way to help mitigate these effects. A horizontal well was dug in hard laterite rock formations until water was found. Traditional water harvesting systems provide very simple, ageold, timetested solutions to the water scarcity problems that farmers have been facing in recent years, and build on the concepts. Rain water harvesting is a technique of recharge of ground water by capturing and storing rain water.
Rainwater harvesting is the intentional collection of rainwater from a surface and its subsequent storage in order to supply water during the time of demand. It involves collection and storage of rain water at surface or in subsurface aquifer, before it is lost. Publicise rainwater harvesting, make it attractive. Water harvesting for domestic use though the large number of reservoirs and tanks built in different times by the kings, village communities and. Thus a complex labyrinth of fine tunnels are built which constitutes horizontal wells dug in laterite rocks. Mar 14, 2017 surangam is a traditional water conservation system present in areas of karnataka and kerala. Rainwater harvesting rwh is a simple method by which rainfall is collected for future usage. People here depend, therefore on groundwater, and on a special water harvesting structure called. Rainwater harvesting, rain water harvesting services, rain.
In doing so, water harvesting assures a continuous and reliable access to water. Central ground water board 1811, jam nagar house, mansingh road new delhi 110011 phone. Rainwater harvesting has been very popular in india for centuries. The excavation continues until a good amount of water is struck. Tunnel wells or surangams are less common tradi tional groundwater harvesting structures of kasara god district in kerala, southern india. A water harvesting system collects and stores water. Surangam, a special water harvesting structure, is found in kasaragod district in northern kerala. Rainwater harvesting is best described as the technique by which rain water is accumulated and stored with the intention of reusing it during the dry season or when there is a drought. Time tested ancient water harvesting systems in india. Rainwater harvesting has been used to provide drinking water, water for livestock, water for irrigation or to refill aquifers in a process called groundwater recharge. Pdf the sustainability of suranga irrigation in south karnataka. Water seeps out of the hard rock and flows out of the tunnel. Rainwater collected from the roofs of houses, tents and local institutions, or from specially prepared areas of ground, can make an important contribution to drinking water. It is therefore important that adequate supplies of water be developed to sustain such life where there is no surface water, where groundwater is deep or inaccessible due to hard ground.
Kerala farmers struggle to protect surangas, their. Us rainwater can be used directly in water scarce period by construction of sump and collect the roof top rainwater through filter media. The term rain water harvesting is being frequently used these days, however, the concept of water harvesting is not new for india. Rain water harvesting is essential in view of the fact that rainfall, which is a source. R public school, vizianagaran andhra pradesh select case studies rain water harvesting and artificial recharge central ground. Rainwater harvesting in mumbai pdf is not far away when one shall have to. The terrain is such that there is high discharge in rivers in the monsoon and low discharge in the dry months. Flood water harvesting, also known as large catchment water harvesting or spate irrigation, may be classified into following two forms.
Ancient water conservation methods in india green clean. This video shows the importance of rain water harvesting. Jun 20, 20 surangam kasaragod district in the northern malabar region of kerala is an area whose people cannot depend directly on surface water. Methods roof top harvesting run off harvesting these methods can be selected considering,the purpose, the type and quantity of. Slowly, there is a growing awareness that the traditional water harvesting systems will be a better and cheaper alternative to big or small dams. Surangam are tunnels that divert the water away from a well that is dug deep into the ground. This greatly restricts the scope of rainwater harvesting as a considerable amount of water that falls around the builtup area is let out of the building as runoff. Rain water harvesting is an ecofriendly, affordable, adoptable and. Use recycled water, harvested rain water wherever possible. Rain water harvesting pdf advantages,techniques,examples of water harvesting rainwater harvesting is a process involving collection and storage of rain water with the help of artificially designed system that runs off natural or manmade catchment areas e. Keni is the property of the hamlet, not any ones property. Rainwater harvesting is essential in view of the fact that rainfall, which is a source.
Introduction water is essential for all life of forms on earthincluding human, animal and vegetation. Jul 15, 2016 water conservation is a key element of any strategy that aims to alleviate the water scarcity crisis in india. Rainwater harvesting is a technology used for collecting and storing rainwater from rooftops, the land surface or rock catchments using simple techniques such as jars and pots as well as more complex techniques such as. The concept of water harvesting, especially rainwater harvesting, has been in existence for over five thousand years, since the early development of settlements and agriculture. Water conservation free download as powerpoint presentation. However, the british governments code for sustainable homes encourages fitting large underground tanks to newbuild homes to collect rainwater for flushing toilets, washing clothes. Surangam is a traditional water conservation system present in areas of karnataka and kerala. Flood water harvesting can be defined as the collection and storage of creek flow for irrigation use. The indus valley cities had excellent systems of water harvesting and drainage. Rainwater harvesting is a type of harvest in which the rain drops are collected and stored for the future use, rather than allowing them to run off. Ancient water conservation methods in india green clean guide. Water harvesting is the collection of runoff for p roductive purposes. Technological potential for improvements of water harvesting. Brief notes on rain water harvesting publish your articles.
Water conservation is a key element of any strategy that aims to alleviate the water scarcity crisis in india. With rapid climatic changes, increase in global temperature and population growth, there is a scarcity of potable water in many countries across the world. Water harvesting is the activity of direct collection of rainwater,which can be stored for direct use or can be recharged into the groundwater. Worlds largest rainwater harvesting project in karnataka. While the rainwater harvesting system investigate a new. Rainwater harvesting should be given wide publicity and delhi jal board djb should offer rebates to attract people to implement it, delhi high court said on wednesday. Rain water harvesting pdf advantages,techniques,examples of. Groups of villages have revived small water harvesting systems and are enjoying the benefits. The collected rainwater may be stored, utilised in different ways or directly used for recharge purposes. We have expertise in rain water harvesting rwh systems, hydrogeological survey and bore well management, as a part of total rwh solution provider. This is done by constructing special waterharvesting structures like dug wells. A suranga is basically a horizontal tunnel dug in the slope of a laterite hill for about 30 metres 98 ft to 40. Not only that, there were intricate channels and check dams.
Rain water harvesting pdf advantages,techniques,examples. Oct 24, 2007 this video shows the importance of rain water harvesting. Water harvesting helps smooth out variation in water availability by collecting the rain and storing it more efficiently in closed stores or in sandy riverbeds. At the mouth of the surangam, a reservoir is constructed to collect and store the water. This water is usually collected in an open pit constructed outside the surangam. Rainwater harvesting is a technology used for collecting and storing rainwater from rooftops, the land surface or rock catchments using simple techniques such as jars and pots as well as more complex techniques such as underground check dams. Rainwater harvesting latest news on rainwater harvesting. With rooftop harvesting, most any surface tiles, metal sheets, plastics, but not grass or palm leaf can be used to intercept the flow of rainwater and provide a household with highquality drinking water and yearround storage.
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