| dc.description.abstract | Sri Lanka has attractive coastal zone that
contributes to the economic value of the country by
promoting tourism-related activities. In addition, due to the
existence of natural coastal features, the coastal areas of
the country have become the main obstacle to the natural
coastal hazards as Tsunami. However, the coastal area of
Kalutara is currently facing serious problems due to the
anthropogenic activities. Kalutara is also highly vulnerable
area for riverine flood of Kalu Ganga. In May 2017, a
considerable portion of naturally formed sand barrier at
Kalu Ganga River outfall was removed as a strategy to risk
reduction process of flooding. The focus of this study is to
review the negative impacts of this risk reduction process.
To achieve this objective, the bathymetric profiles and the
Google Earth satellite images from 2013 to 2019 were
collected and analysed. The review data is shown a
chronological variation of the sand barrier at the river
outfall. Also erosion in the Kalutara coastal region is
accelerating after May 2017. Moreover, from the
questionnaire survey, salt water intrusion identified as a
serious problem in the region. When applying risk reduction
process for any disaster, first have to identify the best
possible mechanism and it should be applied in proper
manner for appropriate location. If not, other hazards may
generate as side effects of the poor risk reduction strategies
by developing harmful effects for the society and the
environment. | |
