Develop Probabilistic Model for Dam Site Selection Using GIS
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MS - 04 (RS&GIS), Term Project
DEVELOPMENT OF A PROBABILISTIC MODEL
FOR DAM SITE SELECTION USING GIS
TECHNIQUES
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2. 02-Jun-14
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Group Members
Amir Javaid
Sher Muhammad
Chaman Gul
Supervisor
Dr. Saad Malik (IST, Karachi)
Contents
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Introduction
Literature Review
Purpose of the study
Objectives
Study Area
Data Required
Methodology
Expected Outcomes
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Introduction
Suitable site selection for Dams is an important issue. Dams
and reservoirs in Pakistan which have height greater than
15 m (49 ft) are 143.
Multiple parameters like suitable height , flow accumulation
and hazard fault free area are required to explore and
analyses for the development of dams.
Tarbala dam is the largest earth filled dam in the world and
is second largest by the structural volume.
Mirani Dam is the largest dam in the world in terms of
volume for flood protection with a flood stock of 588,690
cubic hectometer.
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Literature Review
A mini project report on “Dam and water shed analysis” this
report mainly discussed following topics
A brief description of various procedures and
implementation.
Calculation of water flow, storage and visualization of
catchments
Discussion on the various calculations regarding the
construction of dam, and its parameters.
A brief overview of the algorithms used during the
implementation of water catchment, coverage and
construction of dam.
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A research paper on “DAM / RESERVOIR SITES SELECTION USING REMOTE
SENSING & GIS TECHNIQUES” by Muhammad Ateeq Qureshi. Finding of this
paper are
Describe the idea about site selection at initial level where the base line
information’s are not available for resources exploration and decision making
is also a critical stage, the authority didn’t have an idea either it is
environmental friendly nor hazard.
Identification of new resources and maps the hydrology of areas.
Literature Review
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Purpose of study
Main purpose of the study is to select a suitable site for
dams protected from Natural Hazards and having
optimum storage capacity.
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Fulfill the electricity generation requirements
Identify suitable sites for Dams
To utilize the water resources in right direction
To minimize the water lose, and use it for national
development purposes
Objectives
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Methodology Flow Chart
Data Required
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Name Description/Type Source
Google earth, Landsat and
Aster
Raster Google Earth,
http:/www.glovis.usgs.gov,
gdem.ersdac.jspacesystems.or.jp/
Fault lines Vector Geological Survey of Pakistan
Earth Quake Data Vector USGS & PMD
Landuse/ Landcover Vector Derived from
Landsat Data
http:/www.glovis.usgs.gov
Snow cover Data Vector Derived from
MODIS Data
http:/rapidfire.sci.gsfc.nasa.gov
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DAM Site Selection Parameters
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1. Catchment area
2. Flow Accumulation
3. Road Network and settlements
4. Landuse/ Landcover map
5. Snow cover map (May and September)
6. Soil map
7. Stream network
8. Faults lines and Earthquakes
9. Dam axis length and height
10.Dam storage capacity
Excepted Outcomes
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Best possible Suitable sites in study area for dams
Maps, graphs, tables and analysis of the study area.
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Analysis Phase
Eliminate unsuitable areas using 7 data items
Water
recharge
areas
Water bodies
Slope
Settlements
Earthquakes
Fault zones
Annual Snow
cover
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Reservoir location constraints criteria
Development of the pairwise comparison matrix
Scale for Pairwise Comparison
Intensity of Importance Definition
1 Equal importance
2 Equal to moderate importance
3 Moderate importance
4 Moderate to strong importance
5 Strong importance
6 Strong to very strong importance
7 Very strong importance
8 Very to extremely strong importance
9 Extreme importance
Source: Adapted from Saaty(1980)
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