Groundwater access

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Rainwater (if given the chance to infiltrate) eventually becomes groundwater. Groundwater is advantageous to harvest as it is always accessible (in spite of the timing of the rainy season), has a high storage capacity with good water quality (usually), is resilient to inter-annual climate variability and has a low cost relative to alternative sources.

However, the height of the water table depends on a lot of factors: type of soils or rock beneath the surface, nearby reservoirs or rivers, and frequency or overall total abstraction of water from populations nearby. Also consider the quality of the groundwater. Is it too salty or near an agricultural runoff or sewage water area? Locate the infiltration or abstraction points where the water is least likely to be affected by pollutants.

Climate change considerations
Climate change affects the precipitation and temperature dynamics on a global scale, and hence will impact upon the supply and demand for water of local communities. Enhancing water storage capacity, both above and below ground, is widely accepted as a coping strategy against hydrological shocks such as floods and droughts.



Field experiences


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RSR Project 473
Project Water4Tomorrow


Groundwater links


Acknowledgements