This document discusses rainwater harvesting. It begins with an introduction to rainwater harvesting, covering what it is, why it is important, and how to implement a rainwater harvesting system. It then discusses design considerations for rainwater capture, conveyance, and storage. Finally, it outlines different methodologies for rainwater harvesting and operational procedures and design considerations.

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SUBMITTED TO : Dr. Sarvesh Kumar

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1. WHAT IS RAINWATER HARVESTING?
2. WHY RAINWATER HARVESTING?
3. HOW TO HARVEST RAINWATER?
4. DESIGN CONSIDERATIONS
5. STORAGE
6. RWH-METHODOLOGIES
7. OPERATIONAL PROCEDURES

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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.

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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

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Rain Water as Source Water
Design Considerations
1 Roof
2 Screen
3 Discharge of water
4 Pre-filter
5 Storage tank
6 Flow meter
7 Storm water discharge

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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
 Infiltration Ponds
• Size based on rainfall pattern, demand, budget and area

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•Roof Rain Water Harvesting
• Land based Rain Water Harvesting
• Watershed based Rain Water harvesting
• For Urban & Industrial Environment
• Roof & Land based RWH
• Public, Private, Office & Industrial buildings
• Pavements, Lawns, Gardens & other open spaces

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Operational Procedures & Design
Considerations

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Operational Procedures & Design
Considerations