The Lagos State government has advised people residing near the Ogun River to move away from the area immediately.
The government of the South West Nigerian state warns that there could be heavy flooding following heavy rainfall and the opening of the Oyan dam by the Ogun-Osun River Basin Authority.
The Ministry of Environment in a statement signed by the Commissioner of Environment and Water Resources, Tokunbo Wahab, listed the areas likely to be affected to include Alagbole, Meiran, Maidan, Kara, Isheri-Olowora, Agiliti, Owode-Onirin, Owode-Elede, Agboyi I, Agboyi II, Ajegunle, Itowolo, Majidun, Ibeshe, Baiyeku, Maidan, Lekki-Ajah and the Lagos Lagoon boundaries.
Wahab, said following the incidence of flooding already being experienced in the neighbourhood of Ajegunle, Kara, the flooding was likely to become worse.
The Commissioner said an alert issued by the Ogun Osun River Basin Authority on the operation of Ouan Dam had advised all residents of the Ogun River bank to relocate immediately.