The National Emergency Management Agency (NEMA) says more than 30 people have died and over 400,000 displaced due to the flood in Maiduguri, the Borno state capital.
On Tuesday, thousands of residents fled their homes as flood ravaged swathes of Fori, Galtimari, Gwange, and Bulabulin areas of Maiduguri.
The flood occurred due to the collapse of the Alau Dam which has been at full capacity for the past week.
The Borno government has opened up internally displaced persons (IDP) camps for victims across the state.
The incident has elicited widespread sympathy for the people of the state.
Manzo Ezekiel, NEMA spokesperson, said over 400,000 people were displaced by the flood.
Ezekiel said more than 100,000 people are currently in various IDP camps.
The NEMA spokesperson added that the agency is working with stakeholders to support the victims by safely returning them to their homes after the flood recedes.