A GEO SPATIAL ANALYSIS OF FLOOD HAZARD IMPACT ASSESSMENT IN VAVUNIYA DISTRICT, SRI LANKA.
Journal Title: International Journal of Advanced Research (IJAR) - Year 2019, Vol 7, Issue 3
Abstract
Several areas in the Vavuniya district are being experienced to inundate during every rainy season frequently, thus it is crucial to assess the flooding incidents in this area in order to derive the proper planning and policies to overcome the impact of this hazard. The objective of this study was to build a GIS model for flood hazard impact assessment in Vavuniya district of Northern Province. In addition to produce flood hazard risk map to the Vavuniya district in a GIS platform. The study has required primary data, were collected from observations, discussions and interviews with affected people using district level participatory hazard and resource mapping. secondary data has been collected from reports, disaster preparedness and response plan in Disaster Management Center. The present investigation was tailored to assess the use of Multi Criteria Decision Approach (MCDA) in Vavuniya district flood analysis. Categorization of possible flood risk zone was accomplished using geospatial datasets like elevation, slope, distance from river, and land use characteristics which were derived from digital elevation model (DEM) and satellite image respectively. As well as, data were collected using hazard score, vulnerability score, and manageability score tables and produced risk map in Vavuniya district. This result suggests that MCDA within GIS techniques is very useful in accurate and reliable flood risk analysis and mapping. In this context it is critical to develop appropriated preventive strategies in the flood prone zone to protect the people from potential disaster threat. The Hazard score map with spatial references Vavuniya north, Vavuniya, and Vengalacheddikulam are high hazard prone areas in Vavuniya district. The vulnerability score map with spatial references Vavuniya north, Vavuniya and Vengalacheddikulam are highly vulnerable areas in Vavuniya district. The manageability score map with spatial references Vavuniya north, Vavuniya, and Vengalacheddikulam are highly hazard prone areas in the district. The risk score map with spatial references Vavuniya, Vavuniya south and Vengalacheddikulam are highly hazard prone areas in Vavuniya district.
Authors and Affiliations
V. Sivarajah, J. N. D. Jayathunga, S. Thiyagarajah.
Keywords
Related Articles
- EP ID EP535767
- DOI 10.21474/IJAR01/8606
- Views 74
- Downloads 0
THE SCIENTIFIC CONTEXT OF ZYGOMATIC IMPLANT IN BONE LOSS: A REVIEW.
Introduction: The lack of bone in the alveolar ridge represents a major problem in aesthetic recovery in patients who suffered dentoalveolar traumas, traumatic extractions, congenital absence of tooth involvement involvi...
A STUDY OF THE IMPACT OF DIETARY HABITS ON TYPE II DIABETIC RETINOPATHY CORRELATING WITH HBA1C LEVELS, AMONG PATIENTS ATTENDING A TERTIARY CARE HOSPITAL ATTACHED TO ANDHRA MEDICAL COLLEGE, VISAKHAPATNAM, ANDHRAPRADESH.
Background: Type 2 diabetes, right nowaffecting almost 10 % of the population, is one of the most frequently encountered metabolic disorders in India.Almost every organ in the body can be adversely affected with the onse...
EFFECT OF YOGA ON ATTENTION LEVEL OF ORPHAN GIRLS WITH ADHD.
Mental health issues among children living in orphanages have been rising. These children often suffer from psychiatric disorders such as Attention Deficit Hyperactivity Disorder (ADHD). ADHD is characterized by inattent...
PHYSICOCHEMICAL CHARACTERISTICS AND ANTI-NUTRITIONAL FACTORS OF SOME UNDERUTILIZED TUBERS (DIOSCOREA SPP AND COLEUS ESCULENTUS) GROWN IN CAMEROON.
Food insecurity is a threat to most countries in Africa despite the presence of many food commodities. The objective of this work was to determine the nutritional composition and anti-nutritional factors of four underuti...
AN EPIDEMIOLOGICAL ASSESSMENT OF CHILD INJURIES IN ZAGAZIG UNIVERSITY HOSPITALS; PATTERNS AND MANAGEMENT MODALITIES.
Background: Trauma is the leading cause of death in childhood. Among children aged from 1 to 14 years, approximately 50% of mortality is related to trauma. Aim: to evaluate child injury in Zagazig University Hospitals in...