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

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Eastern Ghats Environment Outlook
 
Environment and climate change fes
Environment and climate change fesEnvironment and climate change fes
Environment and climate change fes
 

Rainwater harvesting ccrt dr. reddy_2

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  • 9. Geographical area = 329 Mha of which 47% (142 Mha) is cultivated, 23% forested, 7% under non-agri use, 23% waste.
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Notes de l'éditeur

  1. What are the dependencies that affect the timeline, cost, and output of this project?