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[[Image:Rainwater_harvesting_icon.png|right]]
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Rainwater harvesting refers to structures which catch rainwater and store it in underground or above-ground tanks for later use. Where access to groundwater is limited, or if groundwater has a bad quality, rainwater harvesting can be an effective and low-cost solution.
Different catchment types are used, such as roof catchment, paved surface catchment, surface catchment and riverbed catchment. Water can be stored during the wet season using one of several methods, eg. an [[underground tank]], [[wire-cement tank]], sand dam or [[plastic-lined tank]], until the water is needed in the dry season.
Several pump systems can then be used to lift the water from the tank, for example with a [[rope pump]] or with a [[deep well pump]], which can elevate water up to a height of 30 m.
==History and social context==
==Suitable conditions ==
{{procontable | pro=
- XXX Possible in almost any climate <br>- XXX Rainwater is good quality water <br>
| con=
- XXX<br>- XXXStorage is needed to bridge dry periods<br>
}}
== Movie Movies==
* [http://www.thewaterchannel.tv/index.php?option=com_hwdvideoshare&task=viewvideo&Itemid=53&video_id=144 Rainwater Harvesting Nepal]
* [http://www.youtube.com/watch?v=QaTYxX_jajs Rooftop Rainwater harvesting India]
* [http://nl.youtube.com/watch?v=4xtMnE9Bo6s Rain water]
* General Background [http://www.unep.org www.unep.org ]
* General Background [http://www.rainfoundation.org www.rainfoundation.org ]
* General Background [http://www.hrwallingford.co.uk www.hrwallingford.co.uk ]
* General Background [http://www.rainwaterharvesting.org www.rainwaterharvesting.org ]
==References==
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