02-Jun-14

1

1

MS - 04 (RS&GIS), Term Project

DEVELOPMENT OF A PROBABILISTIC MODEL

FOR DAM SITE SELECTION USING GIS

TECHNIQUES

2

02-Jun-14

2

3

Group Members Amir Javaid

Sher Muhammad

Chaman Gul

Supervisor Dr. Saad Malik (IST, Karachi)

Contents 4

Introduction

Literature Review

Purpose of the study

Objectives

Study Area

Data Required

Methodology

Expected Outcomes

02-Jun-14

3

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.

5

02-Jun-14

4

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.

7

8

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

02-Jun-14

5

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.

9

10

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

02-Jun-14

6

Methodology Flow Chart

Data Required12

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

02-Jun-14

7

DAM Site Selection Parameters13

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 Outcomes14

Best possible Suitable sites in study area for dams

Maps, graphs, tables and analysis of the study area.

02-Jun-14

8

02-Jun-14

9

17

Streams

18

02-Jun-14

10

19

Analysis Phase

Eliminate unsuitable areas using 7 data items

Water recharge

areas

Water bodies

Slope

SettlementsEarthquakes

Fault zones

Annual Snow cover

02-Jun-14

11

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)

22

02-Jun-14

12

23

THANKS

24

Questions - Discussion