[[Image:Dew collection icon.png|right|100px80px|]]
__NOTOC__
[[Image:Dew system.jpg|thumb|right|400px200px|Experimental dew condenser in Vignola (Corsica island, France). Photo: [http://www.opur.fr/ OPUR.]]]
Dew can bring substantial amount of water when the other resources (groundwater, rain, fog) are lacking. Rainwater harvesting structures can also be used to collect dew at night, which condenses on a surface from where water droplets drip into a gutter that goes to a reservoir. Quantity from dew varies according to location but at times has been shown to constitute a significant proportion of normal rainfall. Dew collection is a possible supplementary source of water in arid and semi- arid areas, but has so far not been widely applied and is an area of further research.
|-
! width="50%" style="background:#efefef;" | Advantages
! style="background:#ffdeadf0f8ff;" | Disadvantages
|-
| valign="top" | - Water quality can be good <br>
==Construction, operation and maintenance==
[[Image:Dew storage system.jpg|thumb|right|300px200px|A dew-collecting house in Salbunara bay, NW of Biševo Island. The 15.1 m2 roof has its symmetry axis oriented east (left)-west (right). Sea is on the west side. Photo: D. Beysens.]]
The best time to gather dew is in the early morning before the sun has touched your collection area.
==Field experiences==
* [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==
==Acknowledgements==
* CARE Nederland, Desk Study: [[Resilient WASH systems in drought-prone areas]]. October 2010.
* M. Mileta, D., Beysens and V. Nikolayev, et al. [http://www.googlebalwois.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=11&ved=0CDkQFjAAOAo&url=http%3A%2F%2Fbalwois.com%2Fbalwois%2Fadministration%2Ffull_paper%2Fffpbalwois/administration/full_paper/ffp-587.pdf&ei=yiNuT4XHJeiOiALGz_iNBQ&usg=AFQjCNFcGJ2LQ0cEcCxzw5ZCCjS4SVZu0w&sig2=Dp12ayEQaGJPZpLDfHMpzw Fog and Dew Collection Projects in Croatia] Croatia and France, 2004.
* [http://www.tacticalintelligence.net/blog/dew-collection.htm Dew Collection for Survival Water] Tactical Intelligence. July 2011.