College of Engineering Civil Engineering Dep. · King Fahd University for Petroleum and Mineral May...
Transcript of College of Engineering Civil Engineering Dep. · King Fahd University for Petroleum and Mineral May...
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King Fahd University for
Petroleum and Mineral
May 2013
Supervisor
College of Engineering
Civil Engineering Dep.
GIS Applications in Assessment of Flood Hazard
Dr. Baqer Al-Ramadan
Presented by
Ahmed Alareeq
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Introduction
Objective
Assessment of Flood Hazard of Jeddah
Assessment of Flood Hazard of Northern
region of Ghana
Results and Discussion
Conclusion
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Flood hazards is a massive challenge
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How to
Forecast
assess
manage the flood hazard
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GIS technology
Forecast
assess
manage the flood hazard
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Evaluate the hazard of flood
Identify the zones subjected to flood.
looking for better solutions
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Study area
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Natural Causes
Heavy rain
Topography
manmade Causes
Lack of hydraulic structures
A lack of disaster warning devices
Corruption
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Effects on human life
People and livestock die
Disease
Economic costs
Infrastructure damage
Rebuilding costs
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Delineation of Drainage System
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Images Processing IKONOS satellite
ENVI 4.3 and ERDAS
GIS Application Arc GIS 9.3.
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24 basins
688km2
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huge rocky basin
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Flooded zones
flood hazard map
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Located in the northern part of Ghana
The largest area in Ghana of 5810 km2.
(Northern region of Ghana)
Case study (2)
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The data used
Topographic map
(b)
Level 1b ASTER
imagery (c)
Contour lines
Water bodies
Population census data
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The data used
The highest
elevation for
13 districts
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District distances from the White Volta River were
determined as:
Midpoints
point feature
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Flood Hazard Map
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GIS is an important non-structural flood
management technique.
flood is a natural phenomenon, we can’t completely
stop it; we can minimize its bad effects by better
planning.
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GIS technology is a powerful application
Early warning system
Awareness programs
A national anti-corruption organization
Suitable hydraulic structures
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