The Impact of Perennial Pluvial Flooding on the Architectural Quality and Performance of Residential Buildings in Selected Areas of Port Harcourt Metropolis

Abstract

The study examined impact of perennial pluvial flooding on the architectural quality and performance of residential buildings in selected Areas of Port Harcourt Metropolis. Resilience Theory guided the theoretical framework of this study. The methodology integrates both primary and secondary data sources. With a population of 1,416, a sample frame of 708, and a sample size of 512 determined using the Taro Yamane method, the study employed field observations, surveys, and statistical analysis, including descriptive statistics. Additionally, Geographic Information Systems (GIS) were used to identify flood-prone areas within the metropolis. The findings also revealed that flooding negatively impacts building safety, aesthetics, comfort, and durability, with 80% of respondents reporting moderate damage and 25% highlighting severe effects on structural integrity. The study recommends the implementation of Blue-Green Infrastructure (BGI) in residential buildings. BGI combines natural systems with urban planning to reduce storm water runoff, improve water quality, and enhance urban livability. This guide provides practical guidance on implementing BGI in residential buildings, with the aim of promoting flood resilience and creating more sustainable and resilient communities. It applies to new and existing residential buildings in Port Harcourt Metropolis and proposed a flood-resilient design framework that incorporates architectural innovations, effective stakeholder involvement, and strong policy measures.