The National Emergency Management Agency (NEMA) on Friday issued flood warnings to residents in some states.
Director-General of NEMA, Mustapha Maihaja, raised the alarm at an emergency meeting with environmental experts in Abuja.
Some of the states likely to be affected include Kebbi, Niger, Kwara, Kogi, Anambra, Edo, Delta, Rivers, Bayelsa, Adamawa, Taraba and Benue.
Mustapha Maihaja gave a stern warning to residents of the states following a rise in the water level to over 10.1 metres.
He said the NEMA would collaborate with relevant government agencies to reduce the impact of the flood on the states at risk.
One of the experts who spoke at the meeting is the General Manager of Hydro meteorological Services, Nigerian Meteorological Agency (NIMET), Mr Daniel Okafor.
He sheds light on the magnitude of rainfalls to be experienced in some states, saying such was likely to cause flooding.
A flood disaster which occurred six years ago is estimated to have claimed hundreds of lives and displaced millions of people across 30 states.