IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Flood risk management and adaptation : Trends of floods in sri lanka
Trends of floods in sri lanka
Author : SHAMMI DE SILVA(1), SHRIYANGI ALUWIHARE(2), JANAKI CHANDIMALA(3), ROSHAN JAYASOORIYA(4), RASADARI UNDUGODA(5)
ABSTRACT
This study presents results of an analysis carried out in obtaining trends of floods in Sri Lanka based on the available
records of flood events during last 20 years. Ten major river basins which are vulnerable to floods encompassing a
significant portion of Sri Lanka have been selected for the analysis of flood disaster trends. Loss of life, families affected,
and houses damaged and destroyed due to extreme flood events were taken as tools to determine the magnitude of
floods. Frequency of occurrence of floods was determined by the number of flood events occurred in the respective basins
for the last 20 years. At basin level, the results indicate an increasing trend of flood disasters. But in some basins a
significant amount of unexplained variance remains; mainly due to the minor mitigation strategies practised in the
respective basins. At the national level, an increasing trend both in occurrence and magnitude of floods in Sri Lanka can
be observed when loss and damage data in a nation ĘC wide basis is reviewed. However a considerable amount of
variance can be observed in the results due to the variability of factors such as climatic changes, un-planned
development, environmental degradation and human interventions.
File Size : 578,484 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Flood risk management and adaptation
Date Published : 18/08/2015
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