Abstract
Purpose: This study is carried out to quantitively assess the resilience of residential properties to urban flooding in Port Harcourt, Nigeria, and whether they vary at spatially aggregated scales relative to the level of flood exposure.
Design/Methodology/Approach: The study synthesizes theoretical constructs/indicators for quantifying property level resilience, as a basis for measuring resilience. Using a two-stage purposive/stratified randomized sampling approach, 407 questionnaires were sent out to residents of 25 flood-prone areas, to solicit information on the resilience constructs as indicated by the adaptation behaviors of individual households and their property attributes. A Principal
Component Analysis approach is used as a mechanism for weighting the indicators, based on which aggregated spatial-scale resilience indices were computed for the 25 sampled areas relative to their levels of flood exposure.
Findings: Area-11 located in the moderate flood zone has the lowest resilience index, while Area-20 located in the high flood zone, has the highest resilience index. The Resilience Indices for the low, moderate, and high flood zone, show only minimal and statistically insignificant differences indicating maladaptation even with incremental levels of flood exposure.
Practical Implications: The approach to resilience measurement exemplifies a reproducible lens through which the concept of ‘living with floods’ can be holistically assessed at the property level while highlighting the nexus of the social and technical dimensions.
Originality/Value: The study moves beyond theoretical conceptualization, to empirically quantify the complex concept of property-level flood resilience.
Design/Methodology/Approach: The study synthesizes theoretical constructs/indicators for quantifying property level resilience, as a basis for measuring resilience. Using a two-stage purposive/stratified randomized sampling approach, 407 questionnaires were sent out to residents of 25 flood-prone areas, to solicit information on the resilience constructs as indicated by the adaptation behaviors of individual households and their property attributes. A Principal
Component Analysis approach is used as a mechanism for weighting the indicators, based on which aggregated spatial-scale resilience indices were computed for the 25 sampled areas relative to their levels of flood exposure.
Findings: Area-11 located in the moderate flood zone has the lowest resilience index, while Area-20 located in the high flood zone, has the highest resilience index. The Resilience Indices for the low, moderate, and high flood zone, show only minimal and statistically insignificant differences indicating maladaptation even with incremental levels of flood exposure.
Practical Implications: The approach to resilience measurement exemplifies a reproducible lens through which the concept of ‘living with floods’ can be holistically assessed at the property level while highlighting the nexus of the social and technical dimensions.
Originality/Value: The study moves beyond theoretical conceptualization, to empirically quantify the complex concept of property-level flood resilience.
| Original language | English |
|---|---|
| Pages (from-to) | 72-86 |
| Number of pages | 15 |
| Journal | International Journal of Disaster Resilience in the Built Environment |
| Volume | 16 |
| Issue number | 1 |
| Early online date | 12 Jul 2023 |
| DOIs | |
| Publication status | Published - 2 Jan 2025 |
Keywords
- Flood resilience
- Property-level adaptation
- Resilience measurement
- Urban flooding
