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TABLE OF CONTENTS
Title page
Table of contents
List of Abbreviation and Acronyms
Abstract
CHAPTER ONE: INTRODUCTION
1.1 Preamble
1.2 Background of
the study
1.3 Statement of
the Problem
1.4 Justification
1.5 Aims and
Objectives of the Investigation
1.6 Scope and
Limitation
CHAPTER TWO: LITERATURE REVIEW
2.1 Introduction
2.2 The History of
Hydropower
2.3 Modern
Hydropower
2.3.1 Modern Dams Role in Development
2.3.2 Modern Hydropower and
Hydroelectric Development
2.4 Impacts of
dams and Reservoirs
2.4.1 Abiotic Impact of Dams
2.4.2 Impacts on Flow Regime
2.4.3 Impacts on Thermal Regime
2.4.4 Impacts on Water Chemistry
2.4.5 Impacts on Sedimentation
2.4.6 Impacts on Organisms and Biodiversity
2.4.7 Impacts on Primary Production
2.4.8 Impacts on Health
2.5 Schistosomiasis
in Dams
2.6 Methods of
Environmental Impact Assessment
2.6.1 Ad Hoc Method
2.6.2 Methods of Organizing and Presenting Information
2.6.2.1 Checklists
2.6.2.2 Scales and Weights
2.6.2.3 Matrices
2.6.2.4 Leopold Matrices
2.6.3 Networks
2.6.4 Spatially Based Method
2.6.4.1 Overlays
2.6.4.2 Geographic Information Systems
CHAPTER THREE: RESEARCH METHODOLOGY
3.1 The Research
Design
3.2 Methods of
Impact Identification
3.3 Sources of
Data
3.4 Selection of
the Respondents
3.5 Data
Collection
3.5.1 Questionnaire and Interview
3.5.2 Focus Group Discussion
3.5.3. GIS and Remote Sensing Software
3.5.3.1 Image Classification
3.5.3.2 Change Detection Techniques
3.5.3.3 Change Detection by Area Calculation
3.5.4 Secondary Data Sources
3.6 Data Analysis
3.7 Environmental
Baseline
3.7.1 Bio-physical Environment
3.7.1.1 Location and Extent
3.7.1.2 Geology
3.7.1.3 Relief and Drainage
3.7.1.4 Climate
3.7.1.5 Soil and Vegetation
3.7.1.6 Surface Water Use
3.7.1.7 Terrestrial Habitats
3.8 Project
Description
3.8.1 Description of Existing Project
CHAPTER FOUR: ANALYSIS OF DATA AND DISCUSSION OF
RESULTS
4.1 Introduction
4.2 Hydrology
Assessment of the Project
4.3 Kiri HPP Power
Potential and Options
4.3.1 Generating Potential
4.4 Options for
Installation
4.4.1 Scour Gates
4.4.1.1 Advantages of the Scour Gates
4.4.1.2 Disadvantages of the Scour Gates
4.4.2 Tainter Gates
4.4.2.1 Advantages of the Tainter Gates Option
4.4.2.2 Disadvantages of the Tainter Gates Option
4.4.3 New Intake; Penstocks through Embankment
4.4.3.1 Advantages of the New Intake Option
4.4.3.2 Disadvantages of the New Intake Option
4.5 Description of the Proposed Project Installation
4.5.1 Kiri Dam Hydro-Power Project
4.5.2 Plan, Features and Construction
4.5.3 Power Evacuation
4.5.4 Construction Cost Estimate
4.5.5 Operation Cost Estimate
4.5.6 Energy and Production
4.5.7 Summary
4.6 Land-Use and Land Cover Changes in the KIRI Lake Basin
(1976 - 2014)
4.6.1 Extent of the Changes of Each Land-Use/ land Cover
4.7 Projection of Future Changes within the Basin
4.8 Socio-Demographic Survey
4.8.1 Socio-Demographic Background
4.9 Reported Adverse Impacts of the Dam
4.10 Environmental Impacts Identified
4.11 Environmental Health Impacts Identified
4.12 Economic Impact
4.12.1 Benefits of the Dam
4.13 Perception of the Local People on the KIRI HPP
4.14 Consulted Local Stakeholders
4.14.1 Outcome of Stakeholders Consultations
4.15 Potential
Environmental and Socio-Economic Impacts of KIRI Hydropower Project
4.15.1 General Impacts
4.16 Impact
Criterion and Classification
4.17 Nature of
Impacts
4.17.1 Positive/Beneficial Impacts of the Proposed KIRI
Hydropower Project
4.17.1.1 Construction Stage
4.17.1.2 Operation Stage
4.17.2 Negative/Adverse Impacts of the proposed KIRI
Hydropower Project
4.17.2.1 Construction Stage
4.17.2.1 Operation Stage
4.18 Environmental
Monitoring and Management Plan
CHAPTER FIVE: CONCLUSION AND RECOMMENDATION
5.1 Summary
5.2 Conclusion
5.2 Recommendations
REFERENCES
APPENDICES
ABSTRACT
This thesis assesses the potential environmental as well as
the social impacts that are associated with the conversion of Kiri dam to a
hydro-electric power dam. As case studies, five villages namely; Mabonde,
Gelode, WuroJauro, Kiri and New Talum in the Guyuk District of the Adamawa
State region respectively, were selected for questionnaire survey and scheduled
focus group discussion. A total of 150 questionnaires were administered in the
villages and 8 persons from each village were involved in the scheduled focus
group discussions. Consultations were made to the institutional stakeholders of
the project planning including GOBADEC, UBRBDA, State Ministry of Environment
Yola, and State Ministry of Works Yola to ascertain their understanding of the
project impacts on the environment. Site visit was also undertaken to ascertain
the formation and modification of the of the proposed project environment since
the inception of the dam. Geographic Information Systems and remote sensing was
applied to study the changes in land-use and vegetation cover since the
impoundment of the river in 1982 and it was found that 27.77 km2
of land was lost to the lake reservoir, 20.96 km2
of land was lost to flood plains and 6.82 km2
of land lost to agriculture/settlement, totalling 55.55 km2
of land lost in the last two decades. The result of the study has revealed that
the potential adverse impacts of the proposed project such as flooding,
pollution and threat to public health to mention a few, are mostly limited to
the construction stage of the project. However, numerous benefits such as boost
to economic growth, skill transfer to locals and increase in local economic
activities are to be enjoyed during both the construction and operational
stages of the hydropower project. To avert the potential adverse environmental
and social problems in the area, the study recommends equal partnership between
the project owners, responsible authority (UBRBDA) with the local people to
combat environmental degradation. Furthermore, the use of computer based
technologies like Remote Sensing and Geographical Information System (GIS)
should be implemented to play a major role in assisting and combating the
problems within the lake and dam catchment areas.
CHAPTER ONE
INTRODUCTION
1.1 Preamble
In the technologically advanced world of the 21st
century, the development imperative of renewable energy resources and
hydroelectric power in particular, in developing countries is attributed to the
role it plays in economic advancement and in everyday activities including
production, consumption, health and education. Although electric energy is one
of the major propellers of economic growth, one of the biggest challenges
facing both developed and developing countries currently is the guarantee of a
sufficient supply of environmentally friendly energy (El Bassam, 2004).
Renewable energy resources in general and hydropower in
particular have been characterized as benign sources of electrical energy that
can have a positive contribution for climate change mitigation (Integrated
Healthcare Association; (IHA), 2003). Research on replenishing electrical
energy resources has established an empirical ground to argue why renewable
resources should constitute an essential part of the electrical energy system.
Major reason include that it is a clean alternative to greenhouse gas producing
fossil fuels and they can supply the demand from a rapid population increase in
the developing countries. The rise in the price of fossil fuels, and its
reserves depletion makes renewable fuel possible options for developing economies
(El Bassam 2004; Sternberg 2008). These key justifications may provide decision
makers in developing countries a ground to consider renewable energy resources
as an alternative source of energy or at least as part of the energy mix.A
large number of developing countries, of which Nigeria is not an exception,
have framed an alternative policy that could facilitate the exploitation of
locally available renewable electric energy sources such as hydropower
resources. Thus, the.......
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