Difference between revisions of "Increasing availability of water over space"

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Improving the availability of water over space is one of the technical measures to increase the [[Resilient WASH systems in drought-prone areas|resilience of WASH systems]], as more points of water in an area means better access for people and livestock. Different options are:
 
Improving the availability of water over space is one of the technical measures to increase the [[Resilient WASH systems in drought-prone areas|resilience of WASH systems]], as more points of water in an area means better access for people and livestock. Different options are:
  
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* Local recharge, retention/storage and re-use of water, which are increasingly being seen as the most important adaptations for ensuring water availability and food security to rural and urban populations, especially in developing countries in the face of climate change.
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* Methods to improve the siting and construction of physical structures in order to make them less prone to failure and more efficiently used. Such techniques may also apply in general (e.g. key methods to prevent sub-surface tanks from leaking will also apply in areas not prone to drought) – however, they are included insofar that they help to improve reliability of water availability.
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* Various methods for gaining more water from rainwater and groundwater sources, some of which are innovative and need further research.
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* Methods on how to limit impact on existing saline groundwater and how to recharge/dilute it.
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* Suitable storage methods that take into account the high rain intensity that falls for short time periods in many areas – such storage needs to be able to not only store enough volume of water to last through many months of dry season and/or drought, but also needs to be able to conserve evaporation given the high PET rates in many areas.
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* Methods to increase available water to communities through treatment of non-potable saline water.
 
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* Ways to improve handpump sustainability since this affects water availability in many areas.
 

Revision as of 02:38, 5 June 2012

Improving the availability of water over space is one of the technical measures to increase the resilience of WASH systems, as more points of water in an area means better access for people and livestock. Different options are:

  • Methods to improve the siting and construction of physical structures in order to make them less prone to failure and more efficiently used. Such techniques may also apply in general (e.g. key methods to prevent sub-surface tanks from leaking will also apply in areas not prone to drought) – however, they are included insofar that they help to improve reliability of water availability.
  • Suitable storage methods that take into account the high rain intensity that falls for short time periods in many areas – such storage needs to be able to not only store enough volume of water to last through many months of dry season and/or drought, but also needs to be able to conserve evaporation given the high PET rates in many areas.
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