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Tag: urban drainage Nigeria

Blinding of excavated trench for 0.9m x 1.2m (varying depth) open channel drain at Ogagifo Street, CH 0 + 45.

A behind-the-scenes look at the manhole sequencing system and its purpose in inspection, maintenance, and emergency planning

Posted on 31 January 2026 - 12:58 am by

Manhole Numbering Systems: What They Reveal About Sewage Network Planning and Maintenance in Asaba, Nigeria By John Cee Onwualu (FNSE, FNICE, FNIWE, P.E., R.ENG, MASCE) The rapid urbanization of Asaba, the capital of Delta State, Nigeria, has brought with it an urgent need for sophisticated infrastructure management. As the city expands along the banks of […]

Base casting by summit road down to CH 0+315

Future Trends and Innovations in Stormwater Drainage Quality Control for Nigeria

Posted on 6 July 2025 - 5:24 pm by

Future Trends and Innovations in Stormwater Drainage Quality Control for Nigeria By John Cee Onwualu (FNSE, FNICE, FNIWE, P.E., R.ENG, MASCE) Nigeria is quickly becoming more urban and populated. Because of this, the country has a growing problem with city floods and dirty water. Big cities like Lagos, Port Harcourt, and Abuja show that old-style […]