Rainwater harvesting ccrt dr. reddy_2


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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?
  • Rainwater harvesting ccrt dr. reddy_2

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