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[[Image:Fog_water_collection_icon.png|right|80px]][[Image:Fog_collection.JPG|thumb|right|300px200px|Interception nets for fog harvesting, Nepal]]
Fog water collection uses large polypropylene mesh nets on ridges to capture water-loaded fog, which forms in humid months in mountainous regions or coastal areas. The meshes are erected perpendicular to the prevailing wind. The mesh captures small water droplets (1 to 40 μm), which trickle into a collection trough or gutter and drain into a series of tanks. Trees and grass intercept fog in a similar way.
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! width="50%" style="background:#efefef;" | Advantages
! style="background:#ffdeadf0f8ff;" | Disadvantages
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| valign="top" | - Low project costs <br>
==Construction, operation & maintenance==
[[Image:Dropnet.JPG|thumb|right|300px200px|New design of fog nets called the [http://www.designboom.com/weblog/cat/8/view/9269/imke-hoehler-dropnet.html Dropnet] by German designer Imke Hoehler.]]
Once a polypropylene net is obtained, use it correctly in a double layer. This is normally either polypropylene or polyethylene, u/v protected, with 35% shade coefficient, Raschel mesh weave, and a 1mm fibre size. Efficiency increases with smaller mesh sizes and fibre width.
In Nepal, cost per m2 was $60, which included all materials for nets and reservoirs, plus labour.
* [http://www.googlebalwois.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=6&ved=0CGkQFjAF&url=http%3A%2F%2Fbalwois.com%2Fbalwois%2Fadministration%2Ffull_paper%2Fffpbalwois/administration/full_paper/ffp-587.pdf&ei=M2YPUJjwBZDuigKowICYBA&usg=AFQjCNFcGJ2LQ0cEcCxzw5ZCCjS4SVZu0w&sig2=0Rmc0M9MkjcBT-EhlrQ9ZQ FOG AND DEW COLLECTION PROJECTS IN CROATIA.]
==Manuals, videos, and links==
==Acknowledgments==
* CARE Nederland, Desk Study: [[Resilient WASH systems in drought-prone areas]]. October 2010.
* [http://www.washdoc.info/docsearch/title/169828 Smart Water Harvesting Solutions: Examples of innovative, low cost technologies for rain, fog, and runoff water and groundwater.] (or [http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=9&ved=0CGsQFjAI&url=http%3A%2F%2Fwww.arcworld.org/downloads/smart%2Fdownloads%2Fsmart%2520water20water%2520harvesting20harvesting.pdf&ei=NXNzT7CYEIiTiQKdxviYCw&usg=AFQjCNECS9O4gaRRQadp5dd4B5RDPxTwQA&sig2=QwWuUbra7my8Dpq5c_0baw alternative link]) Netherlands Water Partnership, Aqua for All, Agromisa, et al. 2007.
* Schemenauer, Robert and Cereceda, Pilar. [http://www.tiempocyberclimate.org/portal/archive/issue26/t26art3.htm Tiempo: Fog Collection]
* [http://tech-action.org/Guidebooks/TNA_Guidebook_AdaptationAgriculture.pdf Technologies for Climate Change Adaptation: Agricultural Sector.] UNEP. August 2011.
