Transport in Chad the direction of Kousseri, Cameroon, near N'Djamena. Expansion of the road towards Cameroon through Pala and Léré is reportedly in the preparatory stages. Most rivers flow but intermittently. On the Chari, between N’Djamena and Lake Chad, transportation is possible all year round. In September and October, the Logone is navigable between N’Djamena and Moundou, and the Chari between N’Djamena and Sarh. Total waterways cover 4,800 km (3,000 mi), of which 2,000 km (1,250 mi) are navigable all year. Chari and Logone Rivers are navigable only in wet season (2002). Both flow northwards, from the south of Chad, into Lake Chad.
Geography of Niger longest border is with Nigeria to the south, at 1,608 km. This is followed by Chad to the east (1,196 km), Algeria to the north-northwest (951 km), and Mali to the west (838 km). Niger also has short borders in its far southwest frontier (Burkina Faso at 622 km and Benin at 277 km) and to the north-northeast (Libya at 342 km). Geography of Niger Niger is a landlocked nation in West Africa located along the border between the Sahara and Sub-Saharan regions. Its geographic coordinates are longitude 16°N and latitude 8°E. Its area is 1.267 million square kilometers, of