Editing Hydrogeology of Guinea Bissau
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===Groundwater use=== | ===Groundwater use=== | ||
− | Groundwater is the main source of rural water supply for drinking water in the dry season. Traditional groundwater abstraction supplies are largely from hand dug wells, water holes in low lying areas (called bolanhas), and artesian springs. Newer abstractions include improved dug wells, often equipped with a rope and bucket system; improved dug and drilled wells equipped with a handpump; and drilled wells equipped with wind or solar pumps (Visscher and van der Werff 1995). More detail on groundwater use practices, in rural and urban areas, can be found in a report by | + | Groundwater is the main source of rural water supply for drinking water in the dry season. Traditional groundwater abstraction supplies are largely from hand dug wells, water holes in low lying areas (called bolanhas), and artesian springs. Newer abstractions include improved dug wells, often equipped with a rope and bucket system; improved dug and drilled wells equipped with a handpump; and drilled wells equipped with wind or solar pumps (Visscher and van der Werff 1995). More detail on groundwater use practices, in rural and urban areas, can be found in a report by Visscher and van der Werff [https://www.ircwash.org/resources/towards-sustainable-water-supply-eight-years-experience-guinea-bissau (1995)]. |
− | Groundwater is also used for small scale (garden) irrigation, traditionally via shallow, hand dug wells. Groundwater is not used much for large scale commercial irrigation, although in at least one area - Granja de Pessub - drilled boreholes up to 300 m deep are used for irrigation ( | + | Groundwater is also used for small scale (garden) irrigation, traditionally via shallow, hand dug wells. Groundwater is not used much for large scale commercial irrigation, although in at least one area - Granja de Pessub - drilled boreholes up to 300 m deep are used for irrigation [(http://www.fao.org/nr/water/aquastat/countries_regions/GNB/ Aquastat)]. |
===Groundwater management=== | ===Groundwater management=== |