Role of GIS for Flood Risk Assessment in Muzaffarabad City, Kashmir, Pakistan

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1 Role of GIS for Flood Risk Assessment in Muzaffarabad City, Kashmir, Pakistan Mr. Falak Nawaz, Research Associate Dr. Syed Hamidullah, Professor & Director National Centre of Excellence in Geology, University of Peshawar, Pakistan GENERAL OVERVIEW OF MUZAFFARABAD CITY

Syed Hamidullah, Professor & Director National Centre of

2 AVAILABLE DATA 1- Topographic Sheet on scale 1:50, SPOT Image of Guide Map of Muzaffarabad city on Scale 1:10, Primary and Secondary Data from different reports

of Muzaffarabad city on Scale 1:10,000 4-

3 MUZAFFARABAD CITY ASPECT MAP

4 Natural Hazard: The probability of occurrence, within a specific period of time, in a given area,, of a potentially damaging natural phenomenon. Natural events become a hazard if they might occur in an area where they might destroy human lives and seriously disturb the human activities. They become a disaster when they actually occur & strike human lives & property. Impact of Hazards in Developing Countries In Developing Countries, people are affecting by disasters on a large scale, due to: 1. Geographical location. 2. Dramatic increase in population. 3. Lack of money to implement measures to decrease loss of lives and property by disasters. These disasters are serious obstacles to economic and social development.

They become a disaster when they actually occur & strike human lives & property.

5 NEED OF GIS & RS AS INTEGRATED TOOLS FOR FLOOD RISK ASSESSMENT Nowadays GIS & RS are emerging as powerful tools for the assessment OF RISK & management of natural hazards. Due to these techniques, natural hazard mapping can be prepared now to delineate flood prone areas on the map. Such kind of maps will enable the authorities for quick assessment of potential impact of a natural hazard and initiation of appropriate measures for reducing the impact. Such data can help the planners and decision-makers to take positive and in time steps during pre-disaster situation. It will also help them during post-disaster activities for the assessment of damages and losses occurred due to flooding. OBJECTIVES OF THE STUDY To develop classified Risk assessment maps for the City. To delineate the infrastructure, which are vulnerable to flooding and other natural hazard. To create a Digital Elevation Model for the area. To develop landuse map for Muzaffarabad City

Such kind of maps will enable the authorities for quick assessment of potential impact of a natural hazard and initiation of appropriate measures for reducing the impact.

10 Can be converted into Classified Hazard categories by using slicing command Gave weight value in attribute tables to Land use, Material used in constructions,age of the buildings, Story's of the houses and Vulnerability of Parcels (Low weight for new houses/non Vul houses with good quality material) (High weight for Old houses/vul with low quality material)

buildings, Story's of the houses and Vulnerability of Parcels (Low weight for new

11 CREATION OF VULNERABILITY MAPS Definition of Vulnerability: The (expected) degree of loss to a given element at risk, or a set of such elements, resulting from the occurrence of a natural phenomenon of a given magnitude, and expressed on a scale from 0 (no damage) to 1 (total loss).

elements, resulting from the occurrence of a natural phenomenon of a

14 Risk: The expected degree of loss due to a particular phenomenon. It is a function of both natural hazard and vulnerability. The population, buildings, civil engineering works, economic activity, public services, utilities & infrastructure, etc are elements which are at risk in a given area.

The population, buildings, civil engineering works, economic activity,

15 LEGEND

17 Pixel information window FINDINGS Low class residential houses are situated very near to the rivers. Main road to Mansehra, hiking track and some other roads are severely vulnerable. Some important Govt; offices were also found vulnerable to flooding. Risk assessment data is severely lacking in the concerned organization. The administrative authorities gave more stress to postdisaster type of activities during any natural hazard. GIS/RS labs are not present in these offices, similarly there is severe lack of computerized database.

Some important Govt; offices were also found vulnerable to flooding.

18 RECOMMENDATIONS 1- Need of Hazard and Risk Assessment Mapping in the concerned organization. 2- Need of a Computerized GIS Database, GIS/RS laboratory in Federal Flood Commission & other related offices. 3- Acquisition of Satellite data (Radar data) during monsoon season from SUPARCO office. 4- Education & Training is needed. 4.1-Need of trained staff Planners, Decision-makers & Administrative officers Technical staff of the line departments

3- Acquisition of Satellite data (Radar data) during monsoon season from SUPARCO office.

Flood Zone Investigation by using Satellite and Aerial Imagery

Flood Zone Investigation by using Satellite and Aerial Imagery Younes Daneshbod Islamic Azad University-Arsanjan branch Daneshgah Boulevard, Islamid Azad University, Arsnjan, Iran Email: daneshbod@gmail.com