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Water Portal / Rainwater Harvesting / Groundwater recharge / Infiltration wells

21 bytes removed, 01:42, 12 January 2016

→‎Rock or wood chip infiltration wells

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[[Image:infiltration wells.png|right|80px]]

[[Image:InfiltrationWell.JPG|thumb|right|200px|Infiltration well in Madagascar. Eric Fewster, BushProof.]]

====Rock or wood chip infiltration wells====

[[Image:WoodChipInfiltrationWell.jpg|thumb|right|200px|Infiltration well filled with rock or wood chips - soil not tilled. For more options like this see [httphttps://www.googleagrireseau.comnet/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CCYQFjAA&url=http%3A%2F%2Fwww.agrireseau.qc.ca%2Freferences%2F6%2FFiches_MAPAQreferences/6/Fiches_MAPAQ-AAC_Erosion%2FPuitsdInfiltration_EN_web/PuitsdInfiltration_EN_web.pdf&ei=2OiFT6SyH5HJiQKPpoXmDQ&usg=AFQjCNHB9NNqUldcGONNvh-vZjj2chsjQA&sig2=aX6lmpw7gCOou3UhFHg0RQ Infiltration wells Factsheet].]]

A hole measuring 1 to 1.5 m in diameter and approximately 1 m deep is excavated at the location selected for the infiltration well.

If the well is constructed with rock in sandy or loamy soil, the bottom and sides of the excavation can be covered with a geotextile membrane (of the Texel 7609 or 7612 type). This membrane will prevent lateral clogging by the rock and is attached to the drain with drainage adhesive tape where the drain crosses it. The membrane is cut 30 cm below the surface of the soil if the soil is to be tilled above the well once installation is complete. Otherwise, the membrane can extend up to the soil surface. Note that no geotextile membrane is used in wood-chip wells.

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