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The main consumptive water uses in Ghana are for municipal, industrial and irrigation purposes. In 2000, about 652 million m3 were withdrawn for irrigation (66 percent), 235 million m3 for municipalities (24 percent) and 95 million m3 for the industry (10 percent), giving a total water withdrawal of 982 million m3 (Table 4 and Figure 1). The combined withdrawal for municipalities and industry is 95 million m3 for rural and 235 million m3 for urban areas. Current water use for hydroelectricity generation (only at the Akosombo Dam), which is non-consumptive water use, is 37.843 km3/yr.
The sources of water supply in the country are surface water and groundwater. Groundwater is usually abstracted from boreholes for most rural areas. Some borehole supplies are also tapped to supplement urban water supplies. In 2000, 95 percent of the withdrawal for urban supply was from surface water and the remaining 5 percent from groundwater.