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Subsurface harvesting systems

2 bytes removed, 20:55, 7 April 2012
Reference manuals, videos, and links==
A subsurface reservoir in Pernambuco, Brazil has an average depth of 4m, is 50m wide, and 500m long, storing about 4,000m3 of water.
==Reference manuals, videos, and links====
* [http://www.wateraid.org/uk/what_we_do/sustainable_technologies/technology_notes/247.asp Technology Notes: Subsurface Dams]. Water Aid.
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