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PRESENTATION ON RAIN WATER HARVESTING

BY:VAIBHAV SHARMA

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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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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 concernsReplenishing local ground water, where lowering of water tables has occured

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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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Condensation

Precipitation

Evaporation

Surface Water

Infiltration

Evapotranspiration

Let’s take a look atThe Water

Cycle

Consumption

Surface Runoff

Groundwater

Sea water intrusion

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Condensation

Precipitation

Surface Water

Groundwater

Consumption

Average Rainfall

Average Annual and Monthly Precipitation – Average rainfall over one year period and monthly intervals and usually based on global atmosphere

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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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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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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 BY RAIN WATER HARVESTING

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