Mass movement in Sri Lanka is mainly triggered by heavy rainfall. International literature is
rich of works defining rainfall intensity-duration models to identify the rainfall threshold for
various types of Mass movement. However, studies have not focused to establish a
relationship between intensity and duration of rainfall in Sri Lanka. Therefore, this study
focused to establish rainfall intensity-duration models to identify the rainfall threshold for
mass movements in Badulla district in Sri Lanka, where forty four (44) rainfall events that …