Rainwater harvesting consists of simple systems to collect, convey, and store rainwater from roof-tops and other surfaces. It captures and stores rainwater for direct use or recharges local groundwater. Rainwater harvesting conserves existing water resources, supplements water supply at low cost, and helps replenish declining groundwater levels. However, it may not be applicable in all climates and collected water quality could be affected by external factors.
Soil is the home of million of organisms. In agriculture, from seed to grain, soil is a prima factor. It also acts a medium to store water for plants and form of water in soil called soil moisture. Some parameters to check the soil moisture called soil moisture constants. So, soil and water relationship is essential in agriculture.
Soil-Water Flow and Solute Transport during Redistribution Morteza Sadeghi
A new method has been developed for scaling water flow and solute transport during soil water redistribution process. The scaled solutions are invariant for a broad range of soil textures and initial conditions. The invariance of the scaled solutions gives an insight regarding features of the process considered and provides an easy way to obtain approximate solutions of the highly non-linear governing equations.
Soil is the home of million of organisms. In agriculture, from seed to grain, soil is a prima factor. It also acts a medium to store water for plants and form of water in soil called soil moisture. Some parameters to check the soil moisture called soil moisture constants. So, soil and water relationship is essential in agriculture.
Soil-Water Flow and Solute Transport during Redistribution Morteza Sadeghi
A new method has been developed for scaling water flow and solute transport during soil water redistribution process. The scaled solutions are invariant for a broad range of soil textures and initial conditions. The invariance of the scaled solutions gives an insight regarding features of the process considered and provides an easy way to obtain approximate solutions of the highly non-linear governing equations.
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This presentation takes a close look at the data and methodology behind WRI’s brand new Aqueduct water risk mapping tool (http://aqueduct.wri.org/) which includes 12 new indicators of water-related risk. Through a step by step description of how the Aqueduct water risk maps were created, it covers the hydrological modeling and data sources used to compute all 12 indicators of water-related risk, as well as the methodology used to weigh and aggregate each indicator into physical, regulatory, reputational and overall water risk scores.
2. What Is Rainwater Harvesting?
RWH 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.
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3. Why Rainwater Harvesting?
Conserve and supplement existing water
resources
Supply water at one of the lowest costs
possible for a supplemental supply source.
Commitment as a corporate citizen -
showcasing environmental concerns
Replenishing local ground water, where
lowering of water tables has occured
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4. Why Not RWH?
Not applicable in all climate conditions over the
world
Collected water quality might be affected by
external factors
Performance seriously affected by climate
fluctuations that sometimes are hard to predict
Collected rainwater can be degraded with the
inclusion of waste water runoff
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5. Condensation
Let’s take a look at
Precipitation The Water Cycle
Evapotranspiration
Evaporation
Infiltration
Surface Runoff
Consumption Surface Water
Sea water intrusion .ppt (5)
6. Condensation
Average Rainfall
Average Annual and
Precipitation Monthly Precipitation –
Average rainfall over one
year period and monthly
intervals and usually based
on global atmosphere
Consumption
Surface Water
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7. Storage
• Storage devices may be either above or below ground
• Different types include
Storage Tanks
Water Containers
Lagoons or Lined Ponds
Size based on rainfall pattern, demand,
budget and area
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8. Establishing the need in India…
A news
article says
that ground
water levels
in New Delhi
are falling
and RWH
will become
mandatory.
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9. SO AS WE ALL ARE THE HUMAN
BEINGS
AND ITS OUR RESPONSIBILTY TO
SAVE OUR GROUND WATER LEVEL
AND MAKE THEM RECHARGE AT
TIME TO TIME
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