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Category Archives: Construction Technology

Case Study: Successful Implementation of Stormwater Drainage Quality Control in Warri, Delta State, Nigeria

Understanding Invert Levels in Flood-Control Engineering: A Case Study of Asaba’s Summit Road

Posted on 6 August 2025 - 9:33 am by

Understanding Invert Levels in Flood-Control Engineering: A Case Study of Asaba’s Summit Road By John Cee Onwualu (FNSE, FNICE, FNIWE, P.E., R.ENG, MASCE) Urban flooding is a persistent challenge in rapidly urbanising regions, threatening infrastructure, public health, and economic stability. For engineers and urban planners, designing effective flood-control systems requires a good understanding of hydraulic […]

Staff of Levant Nig. Ltd during inspection of Stormwater sewer construction at Palm-groove, Warri

Preventing Stormwater Pollution: Implementing Effective QC for Drainage Systems in Nigeria By John Cee Onwualu (FNSE, FNICE, FNIWE, P.E., R.ENG, MASCE)

Posted on 29 June 2025 - 1:17 pm by

Preventing Stormwater Pollution: Implementing Effective QC for Drainage Systems in Nigeria Stormwater, the water that runs off impervious surfaces during rainfall, is a critical element in urban environments. While seemingly benign, its journey through our cities can transform it into a potent source of pollution, significantly impacting Nigeria’s ecosystems and public health. Effective quality control (QC) for drainage […]

Excavation by summit road at CH 0+250

Why Nigeria Must Adopt a Lifecycle-Based Quality Control Model for Stormwater Infrastructure

Posted on 6 May 2025 - 7:32 pm by

The Paradigm Shift: Why Nigeria Must Adopt a Lifecycle-Based Quality Control Model for Stormwater Infrastructure By John Cee Onwualu (FNSE, FNICE, FNIWE, P.E., R.ENG, MASCE) Nigeria, the economic powerhouse of Africa, is currently facing a crippling duality in its urban centers: rapid, uncontrolled urbanization juxtaposed with extreme climate vulnerability. The tragic consequence is chronic, destructive […]

Sample post

Posted on 24 May 2020 - 6:33 pm by

What is a Stormwater Stormwater, which can also be spelled as storm water, is a body of water that formed as a result of rainfall, snow or ice melt. Stormwater can infiltrate the soil, be stored on the land surface in ponds and puddles, evaporate, or resolved to runoff. Most runoff is conveyed directly to […]