Njaba River is one of the prominent rivers in Imo State. It has been listed by the State as one of her spectacular geographic features. She lies in a valley of mangrove forest. In 1932, the first bridge was constructed across Njaba River to aid the passage of the vehicles of the then British Colonial master from Owerri to Orlu. The second and current bridge was build in 1982. Prior to these periods, Akah people had been using the river as a channel of transportation. Palm oil and other agricultural products were transported with boat through the river to Oguta.

The Origin of Njaba River can be traced from Isu Njaba where the river begins with a spring call Njaba Spring and runs through Amucha, Ekwe, Okwudo, Umuaka, Awo omama, and empty itself in Oguta Lake.

However, the deity Njaba is the owner of the Njaba River and it is worshiped by all the people that drinks from the River. Eke (Python) is said to be the child of the Njaba deity, it is respected by all the people that make use of Njaba River. Superstitiously, it was believed that any evil done to the Eke Njaba (Python) could lead to the drowning of people by Njaba River. The Eke is treated as human being by all the communities that use the Njaba River.

In the olden days when there were no pipe born water supply or bore holes, Njaba River was the source of water supply to many communities within Orlu senatorial zone and even Owerri zone. Even until date she still remains the major source water supply to many communities that lie in her bank. Besides, the water from the river has special taste and is believed to be healthy and nutritious to the body.

Njaba River has been a great source of income to Akahland, as she gives room to many employment opportunities. The Dredge site along it bank has been a great source of sand and gavel for the construction of building in most of the areas in Imo State. Many fisher men earns their living from the river. Truck drivers who engage in water supply business get their water from Njaba River. Moreover, the land surrounding the bank of the river has been know for it high fertility in terms of crop cultivation.

In addition, Njaba river has been a leisure center (Beach) for Akah people and other communities in the vicinity. During the Nigeria dry season (November - March) when the temperature is relatively high (above 30.c), most people go to the river to cool off their body. Most of Akah people learned swimming at Njaba River.