Most parts of the district are generally undulating and it lies between 152.4 metres (m) and 610 metres above sea level. It is cut through in the east by the Tano and Bia River Basin, this is mostly below 152.4m above sea level. The highlands, which rise above 305m, lie in a northern direction of the district capital. The main drainage system is the Tano river and its tributaries. The Tano river cuts roughly in a Southern direction and enters the sea in La Cote d’ lvoire. The major tributaries include the Suhien, Kunuma, Sui and the Yoyo.

Geology and Mineral Deposits

The main geological formations that cover the district are the lower and upper Birimain types with the lower Birimain formation to the extreme eastern and north-eastern parts. These are volcanic rocks, which have been solidified from molten materials (lava). These are often steep and strongly dissected. There are gold deposits at Akontombra and Nsawora/Nkwadum areas. Few isolated diamonds are found to the north of Akontombra near Bopa.

Climate

The District falls within the tropical rainforest climate zone with high temperatures between 250 C – 300 C throughout the year. It has moderate to heavy rainfall between 1,524 mm and 1,780mm per annum with a double maxima characteristics in June-July and September-October as peaks. Humidity is high, about 90 percent at night falling to 75 percent during the day. The rainfall distribution pattern as indicated above is favourable for agricultural activities. The dry season is marked by relatively low humidity and hazy conditions occur from December to February. Because humidity is relatively high during the dry season, the District experiences fewer bush fire outbreaks.