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    by Omkar Malage - 114 Ankitesh Mathur-115 Anuj Shah - 119 Stuti Shah-210 Disha Gardi-205

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    Ankitesh Mathur
    Rainwater harvesting involves collecting rainwater and storing it for future use. It provides a sustainable water source and helps recharge groundwater. A typical system involves channels to direct rainwater runoff into an open well or storage tank. The water then percolates into the ground to replenish groundwater levels. Case studies show that rainwater harvesting can significantly increase water availability in villages, supporting drinking water needs for months after the monsoon. It is a low-cost solution that communities can implement themselves to combat water scarcity.

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    by Omkar Malage - 114 Ankitesh Mathur-115 Anuj Shah - 119 Stuti Shah-210 Disha Gardi-205

    Uploaded by

    Ankitesh Mathur
    30 views37 pages
    Rainwater harvesting involves collecting rainwater and storing it for future use. It provides a sustainable water source and helps recharge groundwater. A typical system involves channels to direct rainwater runoff into an open well or storage tank. The water then percolates into the ground to replenish groundwater levels. Case studies show that rainwater harvesting can significantly increase water availability in villages, supporting drinking water needs for months after the monsoon. It is a low-cost solution that communities can implement themselves to combat water scarcity.

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    Rainwater harvesting involves collecting rainwater and storing it for future use. It provides a sustainable water source and helps recharge groundwater. A typical system involves channels to direct rainwater runoff into an open well or storage tank. The water then percolates into the ground to replenish groundwater levels. Case studies show that rainwater harvesting can significantly increase water availability in villages, supporting drinking water needs for months after the monsoon. It is a low-cost solution that communities can implement themselves to combat water scarcity.

    Copyright:

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    Download as pptx, pdf, or txt
    30 views37 pages

    by Omkar Malage - 114 Ankitesh Mathur-115 Anuj Shah - 119 Stuti Shah-210 Disha Gardi-205

    Uploaded by

    Ankitesh Mathur
    Rainwater harvesting involves collecting rainwater and storing it for future use. It provides a sustainable water source and helps recharge groundwater. A typical system involves channels to direct rainwater runoff into an open well or storage tank. The water then percolates into the ground to replenish groundwater levels. Case studies show that rainwater harvesting can significantly increase water availability in villages, supporting drinking water needs for months after the monsoon. It is a low-cost solution that communities can implement themselves to combat water scarcity.

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    of 37

    RAIN WATER

    HARVESTING
     - By
     Omkar malage -114
     Ankitesh mathur-115
     Anuj shah -119
     Stuti shah- 210
     Disha gardi-205
    What is it…
    IS THIS IT…???
    Rain water harvesting- what
    is it??
    It can be termed as the
    activity of direct collection
    of water.
    which can be
    stored for direct use or
    can be recharged into
    the groundwater.
    What is the need??
    Need….
    Need…..
    Need…
    Need….
    Need…
     Water availability per capita has been on decline.
     Agricultural needs.
     It encourages water conservation and self-dependence.
     Private purchase of water from tankers is unreliable in quality
    and is also expensive.
     It makes ecological and financial sense not to waste a pure
    natural resource available in large quantity on one’s roof.
     India is blessed with adequate rainfall as a whole, yet there are
    large swathes of dry, drought prone area. In many other places
    the quality of groundwater is not good. In such places rainwater
    harvesting can provide lifeline water for survival and more.
    Types of rain water harvesting
     Simple roof water collection systems

     Larger systems for educational institutions, stadiums, airports,


    and other facilities.
    Types of rain water harvesting
     Roof water collection systems for high-rise buildings in
    urbanised areas.

     Land surface catchments.

     Collection of storm water


    in urbanized catchments
    Steps-rain water harvesting
    How it is done..
     Step 1.

    Channels and gullies are


    created to direct excess
    rain water into open wells.
    How it is done..??
     Step 2.

    The water collects in


    the well.
    How it is done..??
     Step 3.

    This water then percolates


    into the ground.
    How it is…??
     Step 4.

    Within a week 3,00,000


    litres of water percolates
    100 ft. below ground level
    to recharge the
    ground water table.
    What Must be Considered From Quality and Health Aspects in
    Utilising Rainwater?

     During the last three decades, “acid rain” has affected the quality of the
    collected water, to the point where it now usually requires treatment.
     Low pH rainwater can occur as a result of sulphur dioxide, nitrous
    oxide and other industrial emissions.
     High lead values can sometimes be attributed to the composition of
    certain roofing materials.
     WHO values in terms of total coliform and faecal coliform have
    exceeded.
    Rain water harvesting system
    Components of rain water harvesting system

     Catchments

     Coarse mesh

     Filter

     Conduits
    Components of rain water harvesting
     First-flushing

     Gutters

     Storage facility

     Recharge structure
    What is Rooftop Rainwater Harvesting?

     Collection

     Filtration

     Storage

     Usage
    How Much One Can harvest Rainwater ?

    Vol RWH =A x R x C
    A=Area
    R= Rainfall in meters
    C=Runoff coefficient

    An example
     A =200 m2

     R = 500 mm/yr

     C = 0.80

    RWH = 80,000 litres


    How Can Rainwater Harvesting and Utilization
    Contribute to a
    Sustainable Water Strategy?

     Self-Sufficiency in Water Supply, Without Being Dependent


    on Remote Water Sources.

     Decentralised “Life-Points”, Versus the Conventional “Life-


    Line” Approach
    How Can Rainwater Harvesting and
    Utilization Contribute to a
    Sustainable Water Strategy?

     Restoring the Hydrological Cycle


     Introducing the Concept of “Cycle Capacity”
     Demand Side Management of Water Supply
    Global Need of rain water harvesting
     Global Population Growth

     The Global Water Crisis


    Harvesting for future use – storage in tanks used in
    rajasthan and kutch
    Where..- deserts
     Name: PATPARIA NADI

     Population: 5,000

     Location: Village GODIANA, District Ajmer

     Soil Dug Out: 26,810 cu. ft

     Capacity increased by 7,34,500 Litres

     Community Contribution: $ 39

     Labour Employed :55 (40 Women, 15 Men) for 29 days

     Number of Villages served: 4

     Number of Cattle served :10,000

     Number of open wells recharged: 5

     Number of months water will last after monsoon :4 months


    Where..?? – deserts (case study)

    Name PATPARIA NADI


    Population 5,000
    Location Village GODIANA, District Ajmer
    Soil Dug Out 26,810 cu. ft
    Capacity increased by 7,34,500 Litres
    Community Contribution $ 39
    Labour Employed 55 (40 Women, 15 Men) for 29 days
    Number of Villages served 4
    Number of Cattle served 10,000
    Number of open wells recharged 5
    Number of months water will last after monsoon 4
    Case study
     Name talab
     Population 21,024(2001)
     Location Village falna(bedal), District pali
     Soil Dug Out 10,810 cu. ft
     Capacity increased by 3,34,500 Litres
     Community Contribution 1 lakh
     Number of Villages served 1
     Number of open wells recharged 3
     Number of tube well recharged 3
     Number of months water will last after monsoon 2
    CASE STUDY
    Advantages of rainwater harvesting
     Its provides a water supply buffer for use in times of
    emergency or breakdown of the public water supply systems,
    particularly during natural disasters.
     its can reduce storm drainage load and flooding in city streets.
     Rainwater harvesting technologies are flexible and can be
    built to meet almost any requirements.
     Construction, operation, and maintenance are not labor
    intensive
     Rainwater harvesting can co‐exist with and provide a good
    supplement to other water sources and utility systems, thus
    relieving pressure on other water sources
    Disadvantages of rainwater harvesting
     Maintenance of rainwater harvesting systems, and the quality
    of collected water,can be difficult for users.
     Extensive development of rainwater harvesting systems may
    reduce the income of public water systems.
     Rainwater storage tanks may be a hazard to children who play
    around it.
     Rainwater harvesting systems are often not part of the building
    code and lack clear guidelines for users/developers to follow.
    Lessons learnt…
    Lessons learnt…
     Rain water can be collected where it falls. In schools and within the
    village, to revitalize open wells and hand pumps at a marginal cost.
     The community has the competence and technical capability to construct
    their own water harvesting tanks without any expertise from outside.
     This is the only long term solution to drought proofing villages against
    water scarcity.
     The community has management and control over the water not the
    government.
     The construction of rain water harvesting structures is understood by all
    communities and can be replicated everywhere in the world where there is
    an acute drinking water shortage.
    THANK YOU…..
    SO GUYS LET US ALL CONTRIBUTE TO SAVE WATER
    FOR THE FUTURE….
    COZ THE FUTURE IS ON US………

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