The Federal Government has put 18 states, including the Federal Capital Territory (FCT) Abuja, on alert, over likely severe flooding.
The federal government also warned that flooding could increase cholera outbreaks ravaging some states in the country.
Joseph Terlumun Utsev, Minister of Water Resources and Sanitation, spoke on Thursday, while addressing journalists in Abuja.
Utsev said Nigeria has been experiencing flash/urban floods since May, resulting from high intensification of rainfall which has been prolonged, as well as poor and blocked drainage systems in many urban areas.
He said from the end of July, the country might start experiencing river flooding, which might be more devastating.
The minister revealed the states at high risk of flooding are: Akwa Ibom, Anambra, Bayelsa, Benue, Cross River, Delta, Edo, Jigawa, Kaduna, Kebbi, Kogi, Nasarawa, Niger, Ogun, Ondo, Osun, Rivers and Taraba as well as the FCT.
The National Centre for Disease Control (NCDC) had on Wednesday, said 63 people had died of cholera with 2,102 suspected cases.
Since April 10, some states and the FCT have experienced flooding resulting in casualties and huge damage to properties.
The Water Resources minister said river flooding was expected from major rivers like the Niger and Benue, urging for continuous monitoring and proactive measures.
He noted that Nigeria is located at the lowest portion of the River Niger Basin, which means that once the upper catchment of the basin gets flooded, the country should be prepared to experience flooding incidents.
On the situation with Lagdo Dam in Cameroon, the minister said the operators had informed the country that they were currently filling the dam for hydropower generation.
He said the flow situation at Wuroboki was relatively normal now and that there was no cause for alarm.
