The Ikere Gorge Dam is a major earth-fill dam in Iseyin

Iseyin

Iseyin is a city located in the Nigerian state of Oyo. It is approximately 100 kilometers north of Ibadan. The city is estimated to have a population of 236,000.The primary industry of the area is cotton-based textiles.It also known as the Home of "Aso Oke"...

 local government area of Oyo State

Oyo State

Ọyọ State is an inland state in south-western Nigeria, with its capital at Ibadan. It is bounded in the north by Kwara State, in the east by Osun State, in the south by Ogun State and in the west partly by Ogun State and partly by the Republic of Benin....

 in the south west of Nigeria

Nigeria

Nigeria , officially the Federal Republic of Nigeria, is a federal constitutional republic comprising 36 states and its Federal Capital Territory, Abuja. The country is located in West Africa and shares land borders with the Republic of Benin in the west, Chad and Cameroon in the east, and Niger in...

 on the Ogun River.
Reservoir capacity is 690 million m³.
The dam was initiated by the military regime of General Olusegun Obasanjo and started in 1983 by the administration of Shehu Shagari

Shehu Shagari

Shehu Usman Aliyu Shagari, Turakin Sakkwato served as the President of Nigeria's Second Republic , after the handover of power by General Olusegun Obasanjo's military government....

. The dam was planned to generate 3750 MW of electricity, to supply water to local communities and to Lagos

Lagos

Lagos is a port and the most populous conurbation in Nigeria. With a population of 7,937,932, it is currently the third most populous city in Africa after Cairo and Kinshasa, and currently estimated to be the second fastest growing city in Africa...

and to irrigate 12,000 hectares of land.