The simulation output results and analysis show that: (1) in general
the rainfall intensity duration and frequency will increase under
climate change; (2) the wet climate scenario reveals increase in
rainfall intensity; (3) the increase in rainfall intensity and magnitude
will have significant implications the way current and future
municipal drainage infrastructure is designed, operated, and maintained;
and finally (4) it also raises the fundamental question for
municipal engineers whether new design guidelines are necessary
to be established and the current IDF curves should be revised and
updated to reflect the potential impact of climate change. For this
purpose runoff simulation using SWMM version 5 (http://www2
.epa.gov/water-research/storm-water-management-model-swmm)
storm and sanitary software also performed to analyze whether the
increase in the intensity of rainfall due to climate change would
have an adverse impact on the current drainage system to convey
the excess runoff. Should new design guidelines are necessary to be
established.