Nigeria had no real water resources development management programme until 1976 when twelve River Basin Development Authorities (RBDA) were established and charged with functions that covered all the facets in the resources development, utilisation and conservation. Her immense natural water resources are evident in annual heavy rainfall, numerous large rivers and great ground water reserves. Many government agencies and mining companies are involved in the resources management of which RBDA play the largest part. Their greatest achievements are in irrigation agriculture. The achievements, however, have been limited by many factors including financial constraints, inadequate trained manpower and dependable data availability. Many Universities and Technical Institutes were established all over the country for manpower training of all cadres and a Water Data Bank is planned as a future source of dependable data. International cooperation with developed countries and expert assistance from United Nations Organisations will minimise the problems and multiply the achievements of the existing management authorities.