Dew, fog and rain water collectors in a village of S-Morocco (Idouasskssou)

Abstract

The coastal region of south Morocco presents a chronically shortage of drinkable and fresh water. In 2007, only 49 mm of rain was recorded. However, measurements in the same year showed that the dew yield was on order of 40% of rain fall. In order to recover dew water in addition to rain water, a small village (Idouasskssou), 8 km from Mirleft and the Atlantic Ocean, was equipped with three pilot condensers of 136 m2 total surface area. A local organization (IMIRJANE) collaborated to ensure a good integration of the project by the village inhabitants. All materials were from local shops. Only the special radiative and hydrophilic coating was coming from non local resources (www.opur.fr). Dew water production during six months, from 15 December. 2008 to 31 July. 2009 (137 dew events, 47% of days) was more than 3,800 L (28 mm, 0.2 mm/dew day). The devices not only condense dew water, they also harvest rain and fog, thus providing to the population a valuable water resource (during fall 2009, the collectors were the only source of water of the village).