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Rainwater harvesting ccrt dr. reddy_2

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Rain Water Harvesting and …

Rain Water Harvesting and
Conservation of Water Resources


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  • sir i like your way of rain water harvesting i allso have some good ideas to store R W H one day i allso want to say this plan to society like you sir . so can you add me as your follower my id is suryachandra9@yahoo.com
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  • What are the dependencies that affect the timeline, cost, and output of this project?
  • Transcript

    • 1. Rain Water Harvesting and
      Conservation of Water Resources
      14th Sep. ‘10
      Dr. N. Sai Bhaskar Reddy
      CEO, GEO
      saibhaskarnakka@gmail.com
      http://e-geo.org
      Centre for Cultural Resources and Training
      Ministry of Culture Govt. of India
    • 2. WASTED WATER
      The Barefoot College, Tilonia
    • 3. STRUGGLE FOR WATER
      The Barefoot College, Tilonia
    • 4. POLLUTED WATER
      The Barefoot College, Tilonia
    • 5. The Barefoot College, Tilonia
    • 6. RECHARGE WELLS
      While it would normally take between 20-30 years for water to percolate 100 feet from an open tank, it has been noticed in an open well 300,000 litres can percolate to the same depth within a week.
      The Barefoot College, Tilonia
    • 7. Every drop counts
    • 8. INDIA’S LAND RESOURCE, IRRIGATION AND FOOD PRODUCTION
      • India has 2% of world’s land, 4% of freshwater, 16% of population, and 10% of its cattle.
      • 9. Geographical area = 329 Mha of which 47% (142 Mha) is cultivated, 23% forested, 7% under non-agri use, 23% waste.
      • 10. Per capita availability of land 50 years ago was 0.9 ha, could be only 0. 14 ha in 2050.
      uk-energy-saving.com
    • 11. Out of cultivated area, 37% is irrigated which produces 55% food; 63% is rain-fed producing 45% of 200 M t of food.
      In 50 years (ultimate), proportion could be 50:50 producing 75:25 of 500 M t of required food.
    • 12. Freshwater management in India
      Anupma Sharma
    • 13. What Is Rainwater Harvesting?
      RWH technology consists of simple systems to collect, convey, and store rainwater. Rainwater capture is accomplished primarily from roof-top, surface runoff, and other surfaces.
      RWH either captures stored rainwater for direct use (irrigation, production, washing, drinking water, etc.) or is recharged into the local ground water and is call artificial recharge.
      In many cases, RWH systems are used in conjunction with Aquifer Storage and Recovery (ASR). ASR is the introduction of RWH collected rainwater to the groundwater / aquifer through various structures in excess of what would naturally infiltrate then recovered for use
      .ppt (11)
    • 14. Why Rainwater Harvesting?
      Conserve and supplement existing water resources
      Available for capture and storage in most global locations
      Potentially provide improved quality of water
      Supply water at one of the lowest costs possible for a supplemental supply source.
      Capturing and directing storm water (run-off) and beneficially use it
      Commitment as a corporate citizen - showcasing environmental concerns
      Public Mandate (India)
      Replenishing local ground water aquifers where lowering of water tables has occured
      .ppt (12)
    • 15. Why Not RWH?
      Not applicable in all climate conditions over the world
      Performance seriously affected by climate fluctuations that sometimes are hard to predict
      Increasingly sophisticated RWH systems (ASR) necessarily increases complexities in cost, design, operation, maintenance, size and regulatory permitting
      Collected rainwater can be degraded with the inclusion of storm water runoff
      Collected water quality might be affected by external factors
      Collection systems require monitoring and continuous maintenance and improvement to maintain desired water quality characteristics for water end-use
      Certain areas will have high initial capital cost
      .ppt (13)
    • 16. .ppt (14)
      Condensation
      Let’s take a look at
      The Water Cycle
      Precipitation
      Evapotranspiration
      Evaporation
      Infiltration
      Surface Runoff
      Surface Water
      Consumption
      Groundwater
      Sea water intrusion
    • 17. .ppt (15)
      Design and Feasibility Criteria
    • 18. .ppt (16)
      Collection Area and Characteristics
      Measure Area
      Runoff Characteristics
      Roof top 0.75 – 0.95
      Paved area 0.50 – 0.85
      Bare ground 0.10 – 0.20
      “Green area” 0.05 – 0.10
      Water harvesting potential(m3) = Area (m2) X Rainfall (m) X Collection Efficiency
    • 19. .ppt (17)
      Quality Issues
      Roofs contain: bird droppings, atmospheric dust, industrial and urban air pollution
    • 20. .ppt (18)
      Operational Procedures and Design Considerations
    • 21. .ppt (19)
      Operational Procedures and Design Considerations
    • 22. A news article says that ground water levels in New Delhi are falling and RWH will become mandatory.
      .ppt (20)
    • 23. Storage
      Ponds and Reservoirs
      Artificial recharge of Groundwater
      Water Tanks
      Rainwater runoff in surface water
      Rainwater runoff in groundwater
      Rainwater runoff in tanks
      Effluent in surface water
      Effluent in ground water
      Every drop counts
    • 24. Every drop counts
    • 25. Every drop counts
    • 26. Every drop counts
    • 27. Jnnurm – URBAN RAIN WATER HARVESTING
    • 28. Means of water conservation
      Prof. T. I. Eldho ,
    • 29. Watershed Development & Modelling
      Prof. T. I. Eldho ,
    • 30. WATERSHED Development
      Prof. T. I. Eldho ,
    • 31. WATERSHED MODELLING …
      Precipitation
      ET
      Interception Storage
      ET
      Surface Runoff
      Surface Storage
      Infiltration
      Interflow
      Direct Runoff
      Percolation
      Baseflow
      Groundwater Storage
      Channel Processes
      Flowchart of simple watershed model (McCuen, 1989)
    • 32. High
      Project success
      Socio-economic,
      water conservation,
      participation
      Socio-economic with
      water conservation
      Public participation
      planning, design,
      implementation
      Public Participation
      Mainly water
      conservation
      Low
      1970
      1980
      1990
      2000
      Watershed development program
      Integrated Watershed Approach
      IWM is the process of planning and implementing water and natural resources …… an emphasis on integrating the bio-physical, socio-economic and institutional aspects.
      Social issues are addressed through involvement of women and minority.
      Community led water users groups have led the implementation efforts.
      Prof. T. I. Eldho ,
    • 33. Water Conservation & Harvesting
      Total water management for sustainable development?.
      Prof. T. I. Eldho ,
    • 34. Water Conservation
      Prof. T. I. Eldho ,
    • 35. Water Conservation…
      Every drop counts!!!
      Prof. T. I. Eldho ,
    • 36. Water Conservation
      Water conservation interventions includes contour trenches, gully plugging, vegetative and field bunding, percolation tanks.
      Overall land treatment against potential area is varying between 40-60%.
      Type of land ownership for soil and water conservation measures
      Techniques of soil and water conservation measures
      Prof. T. I. Eldho ,
    • 37.
    • 38. THANK YOU