Storm Water Drainage and Management in Yenagoa City in Nigeria

Table of Contents

CHAPTER 1: INDRODUCTION

1.1 Background to the Study

1.2 Statement of the Problem

1.3 Aim of the Study

1.3.1 Objectives of the Study

1.4 Research Questions

1.5 Research Hypothesis

1.6 Significant of the Study

1.7 Scope of the Study

1.8 Description of the Study Area

1.9 Limitation of the Study

1.10 Definition of Terms

CHAPTER 2: LITERATURE REVIEW

2.1 Technologies for Storm Water Management in Urban Areas

2.1.1 Retention Ponds

2.1.2 On-site Detention (OSD)

2.1.3 Rainwater Harvesting

2.1.4 Green Roofs

2.1.5 Constructed Wetlands

2.1.6 Infiltration Trenches

2.1.7 Grass Filter Stripes

2.1.8 Grassed Swales

2.1.9 Pervious Pavements

2.1.10 Infiltration Basin

2.2 Strategies in Urban Flood Management

2.2.1 Hard Engineering Techniques

2.2.1.1 Dams

2.2.1.2 Artificial Levees

2.2.1.3 Wing Dykes

2.2.1.4 Channel Straightening

2.2.1.5 Diversion Spillways

2.2.2 Soft Engineering Techniques

2.2.2.1 Flooding Zoning

2.2.2.2 Afforestation

2.2.2.3 Wetland Restoration

2.2.2.4 River Restoration

2.3 Problems of Urban Flooding

2.3.1 Economic

2.3.2 Environment

2.3.3 People, Animals and Plants

2.4 Effects of Climate and Hydrological Factors on Storm Water Management

2.5 Effects of Landuse on Urban Flooding

2.6 Other Causal Factors of Flooding

2.7 Problems and Challenges of Urban Flood Management

2.8 Storm Water Management in some Countries

2.8.1 United States of America

2.8.2 South Africa

2.9 Policy and Legislation of Storm Water Management in Yenagoa

2.10 Summary of Literature Review and Identification of Research Gaps

CHAPTER 3: METHODOLOGY

3.1 Introduction

3.2 Research Design

3.3 Sources of Data

3.3.1 Primary Sources

3.3.2 Secondary Sources

3.4 Population and Sampling

3.4.1 Sampling

3.4.2 Sample Size

3.5 Instrumentation and Data Collection

3.6 Description of Statistics and Data Analysis

3.6.1 Analytical Techniques for Data Analysis

3.7 Validity and Reliability of the Instruments

CHAPTER 4: DATA PRESENTATION AND ANALYSIS

4.1 Introduction

4.2 Data Presentation and Analysis

4.2.1 Personal Characteristics of Respondents

4.2.1.1 Sex of Respondents

4.2.1.2 Marital Status of Respondents

4.2.1.3 Educational Status of Respondents

4.2.1.4 Employment Status of Respondents

4.2.1.5 Occupation of Respondents

4.2.2 Flood Problems and Challenges in the Study Area

4.2.2.1 Drainage Facility Provided in the Street and Functionality

4.1.2.2 Adequacy of Drainage

4.2.2.3 Communities and Strom Water Infrastructure Availability and Condition

4.2.2.4 Challenges of Inadequacy of Drainage in the Study Area

4.2.2.5 Reasons for Poor Functional Drainage in the Community

4.2.2.6 Effects of No Drainage in Street and Community

4.2.2.7 Experiencing Flooding in the Community

4.2.2.8 How Often Flooding Incidence is Experienced in the Community

4.2.2.9 Effects of Flooding in the Community

4.2.2.10 Assessment of Government Performance in Storm Water Management in the City

4.3 Climatic and Hydrological Data Presentation and Analysis

4.3.1 Climatic Settings of the Study Area

4.3.1.1 Monthly Average Rainfall Distribution of the Study Area

4.3.1.2 Monthly Average Temperature Distribution of the Study Area

4.3.2 Hydrological Settings of the Study Area

4.3.2.1 Hydrological and Development Characteristics of the Study Area

4.3.2.2 Topography of the Study Area

4.3.2.3 Natural Drainage Flow and Accumulation Systems of the Study Area

4.4 Extent of Urbanisation in the Study Area

4.5 Other Factor Exacerbating Flooding in the Study Area

4.6 Testing of Hypothesis

CHAPTER 5: INTERPRETATION AND DISCUSSION OF FINDINGS

5.1 Introduction

5.2 Flood Problems and Challenges in the Study Area

5.3 Climatic and Hydrological Conditions of the Study Area

5.4 Dynamics of Landuse Pattern of the Study Area

5.5 Other Factors Contributing to Storm Water Management in the Study Area

5.6 Perception of the Residents on Storm Water Management in the Study Area

5.7 Physical Planning Issues

5.8 Solutions for Effective Storm Water Management in the Study Area

CHAPTER 6: CONCLUSION AND RECOMMENDATIONS

6.1 Introduction

6.2 Conclusion

6.3 Recommendations

Research Goals and Thematic Focus

This research aims to assess the existing storm water drainage and management systems in Yenagoa City, Nigeria, identifying key challenges and proposing a sustainable framework to mitigate annual pluvial and fluvial flooding, which are exacerbated by climate change, rapid urbanization, and inadequate infrastructure.

• Assessment of storm water management problems and infrastructure limitations.
• Analysis of climatic and hydrological settings including rainfall and topography.
• Evaluation of urban development impacts and land-use dynamics on natural drainage.
• Development of a sustainable storm water management framework for Yenagoa City.

Excerpt from the Book

Summary of Chapters

CHAPTER 1: INDRODUCTION: Provides the global context of disaster risks in urban areas and defines the specific challenges of storm water management and pluvial flooding in Yenagoa City.

CHAPTER 2: LITERATURE REVIEW: Examines global technologies for storm water management, including both structural (hard) and non-structural (soft) engineering techniques, and discusses the challenges of urban flooding.

CHAPTER 3: METHODOLOGY: Outlines the multi-stage research design, including sampling procedures, data collection from households and government agencies, and the use of statistical tools like Spearman Rank Correlation.

CHAPTER 4: DATA PRESENTATION AND ANALYSIS: Presents the findings regarding resident characteristics, the functionality of existing drainage systems, and analyses of climatic, hydrological, and urban growth data.

CHAPTER 5: INTERPRETATION AND DISCUSSION OF FINDINGS: Interprets the field data, identifying how rapid, unplanned urbanization and inadequate government planning contribute to the persistent flooding crisis in the study area.

CHAPTER 6: CONCLUSION AND RECOMMENDATIONS: Summarizes the study's conclusions and proposes actionable recommendations, including the implementation of the Yenagoa Master Plan and the development of a sustainable storm water framework.

Keywords

Storm Water Management, Urban Flooding, Yenagoa City, Drainage Systems, Urbanization, Hydrology, Landuse Pattern, Flood Risk, Environmental Degradation, Pluvial Flooding, Sustainable Development, Infrastructure, Climate Change, Urban Planning, Disaster Mitigation

Frequently Asked Questions

What is the core focus of this research?

The research focuses on assessing the existing storm water drainage and management practices in Yenagoa City to understand why the area experiences regular annual flooding and to propose effective mitigation strategies.

What are the primary thematic fields covered?

The study covers urban and regional planning, hydrological and climatic data analysis, environmental management, urban infrastructure development, and disaster risk reduction.

What is the primary objective of this dissertation?

The objective is to examine storm water challenges, assess the climatic and hydrological characteristics of Yenagoa, identify causes of flooding, and develop a sustainable storm water management framework for the city.

Which scientific methods were applied?

The research utilized a multi-stage sampling procedure, quantitative data collection through questionnaires, GIS mapping of hydrological settings, and the Spearman Rank Correlation analysis to test relationships between drainage adequacy and flooding.

What does the main body of the work address?

The main body covers the theoretical background of storm water management technologies, a detailed presentation of field data from Yenagoa residents, an analysis of climatic trends, and an evaluation of urban land-use changes over time.

Which keywords characterize this work?

Key terms include Storm Water Management, Urban Flooding, Yenagoa City, Hydrology, Urbanization, and Sustainable Infrastructure.

How does rapid urbanization affect flooding in Yenagoa?

Rapid and often unplanned urbanization leads to increased impermeable surfaces, the destruction of natural wetlands that serve as retention ponds, and the narrowing of drainage paths, all of which worsen flooding during rainfall.

What role do natural drainage systems play?

Natural drainage systems, such as creeks and wetlands, are critical in Yenagoa; however, their capacity is significantly reduced due to pollution, refuse dumping, and the encroachment of residential and commercial buildings.