Difference between revisions of "Water Portal / Rainwater Harvesting / Rooftop rainwater harvesting"
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* [http://www.youtube.com/watch?v=ZVvtPXh8NjQ&feature=related Instruction] | * [http://www.youtube.com/watch?v=ZVvtPXh8NjQ&feature=related Instruction] | ||
* [http://nl.youtube.com/watch?v=4xtMnE9Bo6s Rain water] | * [http://nl.youtube.com/watch?v=4xtMnE9Bo6s Rain water] | ||
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== External links == | == External links == | ||
Revision as of 21:34, 22 December 2008
Where access to groundwater is limited, rainwater harvesting in underground or above-ground tanks can be an effective and low-cost solution. In principle, one needs to catch the rain, store it and distribute it. There are different catchment types, being 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 it 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 30 m.
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External links
- General Background www.unep.org
- General Background www.rainfoundation.org
- General Background www.hrwallingford.co.uk
- General Background www.rainwaterharvesting.org
