This was disclosed in an alert from the Niger Basin Authority to which Nigeria is a member.
According to the report, the floods would begin any time from September 6 starting with Kebbi state. Other states that might be severely hit include Rivers, Niger, Kwara, Anambra, Delta, Edo, Bayelsa, Nasarawa, and Kogi.
The Nigeria Hydrological Services Agency (NIHSA) also said that if excess waters from the dams in other countries upstream Rivers Niger and Benue are released the flooding might be worse.
However, the agency has asked states and relevant government agencies to clear blocked drainages and dredge river channels as a matter of urgency since Nigeria is located downstream.
HIHSA stated that poor drainage systems might cause flash and urban floods in major cities like Abuja, Lagos, Ibadan, Abeokuta, Ado-Ekiti, Osogbo, Asaba, Port Harcourt, Yenagoa, Benin City, Abakaliki, Awka, Nsukka Birnin–Kebbi, Sokoto, Lokoja, Kaduna, Suleja, Gombe, Yola, Makurdi and Lafia.