Difference between revisions of "Water Portal / Rainwater Harvesting"

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|style="background:#efefef;"|[[Image:rainwater harvesting small.jpg|center|100px|link=Water Portal / Rainwater Harvesting / Rooftop rainwater harvesting]]
 
|style="background:#efefef;"|[[Image:rainwater harvesting small.jpg|center|100px|link=Water Portal / Rainwater Harvesting / Rooftop rainwater harvesting]]
 
|style="background:#efefef;"|[[Image:in situ2 small.jpg|center|100px|link=Water Portal / Rainwater Harvesting / In situ rainwater harvesting]]
 
|style="background:#efefef;"|[[Image:in situ2 small.jpg|center|100px|link=Water Portal / Rainwater Harvesting / In situ rainwater harvesting]]
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|style="background:#efefef;"|[[Image:catchment dam small.jpg|center|100px|link=Water Portal / Rainwater Harvesting / Surface water |Surface water]]
 
|style="background:#efefef;"|[[Image:Subsurface harvesting systems small.jpg|center|100px|link=Groundwater recharge |Groundwater recharge]]
 
|style="background:#efefef;"|[[Image:Subsurface harvesting systems small.jpg|center|100px|link=Groundwater recharge |Groundwater recharge]]
 
|style="background:#efefef;"|[[Image:Fog_collection small.jpg|center|100px|link=Fog and dew collection]]
 
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|style="background:#efefef;"|<center>[[Water Portal / Rainwater Harvesting / Rooftop rainwater harvesting|Rooftop]]</center>
 
|style="background:#efefef;"|<center>[[Water Portal / Rainwater Harvesting / Rooftop rainwater harvesting|Rooftop]]</center>
 
|style="background:#efefef;"|<center>[[Water Portal / Rainwater Harvesting / In situ rainwater harvesting|In situ]]</center>
 
|style="background:#efefef;"|<center>[[Water Portal / Rainwater Harvesting / In situ rainwater harvesting|In situ]]</center>
|style="background:#efefef;"|<center>[[Surface water |Surface water]]</center>
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|style="background:#efefef;"|<center>[[Water Portal / Rainwater Harvesting / Surface water |Surface water]]</center>
 
|style="background:#efefef;"|<center>[[Groundwater recharge |Groundwater <br>recharge]]</center>
 
|style="background:#efefef;"|<center>[[Groundwater recharge |Groundwater <br>recharge]]</center>
 
|style="background:#efefef;"|<center>[[Fog and dew collection|Fog and dew]]</center>
 
|style="background:#efefef;"|<center>[[Fog and dew collection|Fog and dew]]</center>

Revision as of 01:56, 2 September 2015

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RAIN logo.jpg
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Rainwater harvesting is a technique of collection and storage of rainwater into natural reservoirs or tanks, or the infiltration of surface water into subsurface aquifers (before it is lost as surface runoff). One method of rainwater harvesting is rooftop harvesting. With rooftop harvesting, most any surface — tiles, metal sheets, plastics, but not grass or palm leaf — can be used to intercept the flow of rainwater and provide a household with high-quality drinking water and year-round storage. Other uses include water for gardens, livestock, and irrigation, etc.

The reasons for using rainwater harvesting systems answer three questions:

What: Rainwater harvesting will improve water supply, food production, and ultimately food security.

Who: Water insecure households or individuals in rural areas will benefit the most from rainwater harvesting systems.

How: Since rainwater harvesting leads to water supply which leads to food security, this will greatly contribute to income generation.


Rainwater Harvesting TOOLS - simple methods applicable to project planning
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3R (Recharge,
Retention & Reuse)
Business Development -
Micro-financing
Multiple Use
Services (MUS)
SamSam
RWH Tool
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Rain is Gain Tool
Rainwater Harvesting
GIS Map
WASH Environmental
Sustainability Assessment


Rainwater Harvesting TECHNOLOGIES - technical construction details, costs, and applicability
Rainwater harvesting small.jpg
In situ2 small.jpg
Surface water
Groundwater recharge
Fog collection small.jpg
Rooftop
In situ
Surface water
Groundwater
recharge
Fog and dew


RWH INNOVATIONS - approaches, technologies, applications and projects on 3R, MUS and sustainable financing
Salyan small.jpg
Salyan 2 small.jpg
Kajiado tank small.jpg
Rwambu spring small.jpg
Rwambu project small.jpg
Salyan and Dailekh,
Nepal
Salyan District,
Nepal
Kajiado, Kenya -
3R and MUS
Rwambu, Uganda -
Clearwater Revival
Rwambu
Uganda Hills


Example rainwater harvesting in India

A temple pond at Mylapore, Chennai, India

Tamil Nadu is the first Indian state to make rainwater harvesting mandatory. On 30 May 2014, the state government announced that it will set up 50,000 rainwater harvesting structures at various parts of the capital city of Chennai. [1]

Around 4,000 temples in Tamilnadu state traditionally had water tanks that were used for various rituals. The tanks also served as natural aquifers and helped recharge groundwater. Over the years, however, many of these tanks have gone out of use. Overflowing mounds of silt and garbage have replaced the water in them.

Now, following sustained campaigns by voluntary organisations and departments in charge of water distribution and use, authorities in Chennai have decided to restore around 40 major temple tanks in the city. The aim is to convert the tanks into catchments for rainwater harvesting. [2]

Rainwater harvesting links

Rainsong video


Field experiences

These projects are utilizing rainwater harvesting techniques and are part of the project listing in Really Simple Reporting (RSR) on Akvo.org. Click the image to get started!


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RSR Project 790
WASH program in Rural Bangladesh
RSR Project 427
Scale up of Sustainable Water Access
RSR Project 446
Etude technique d’avant-projet
RSR Project 158
Rainwater harvesting for Nicolas School
RSR Project 128
Safe water supply for Fayaco, Senegal
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RSR Project 398
Rainwater Harvesting Capacity Center
RSR Project 533
Support on WASH - in Miyo woreda
RSR Project 459
Upscaling CLTS for Healthy Communities
RSR Project 456
Partnership in WASH services delivery
RSR Project 462
Northern Region WASH Programme
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RSR Project 440
Raising awareness on rainwater harvesting
RSR Project 439
Wetland Management & Water Harvesting
RSR Project 545
Rain Water Harvesting in Nepal
RSR Project 403
Rainwater Harvesting in Kenya
RSR Project 840
Rainwater harvesting in Guinee Bissau 2


Community Exchange - Rainwater Harvesting

Below is the entry to a bunch of conversations about rainwater harvesting (RWH) including best practices, troubleshooting, and advice about tanks and systems. We sourced these from the Dgroups website, which is a free member-only forum, where people can ask a pool of over 3,000 members about rainwater harvesting. You can always become a member on their site for greater involvement, if you have questions you need to know for your RWH project. Click on the image to get started! Or click here.

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Acknowledgements

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Many of the tools, technologies, and projects on this page are courtesy of the Rainwater Harvesting Implementation Network.

RAIN is an international network with the aim to increase access to water for vulnerable sections of society in developing countries - women and children in particular - by collecting and storing rainwater.

Started in December 2003, RAIN focuses on field implementation of small-scale rainwater harvesting projects, capacity building of local organisations and knowledge exchange on rainwater harvesting on a global scale.