Drainage refers to water bodies like rivers and lakes.

Drainage of Nigeria can bediscussed in two parts – rivers and lakes. Rivers in Nigeria Nigeria is drained by two main rivers – Rivers Niger and Benue. Rivers Niger, the largest river in Nigeria has its source from Guinea highlands inGuinea. It passes through Mali and Niger Republic to Nigeria. Rivers Benue has its sourcefromeastern highlands and joins the Niger at Lokoja. Because of this, Lokoja is knownasaconfluence town.