Assessment of climate change impact on probable maximum floods in a tropical catchment

The increases in extreme rainfall could increase the probable maximum flood (PMF) and pose a severe threat to critical hydraulic infrastructure such as dams protection structures. This study is conducted assess impact of climate change on PMF tropical catchment. Climate inflow data Tenmengor reservoir, located state Perak Malaysia, have been used calibrate validate hydrological model. projected from regional model generate precipitation (PMP) for future periods. A was simulate PMP estimated historical two periods, early (2031 − 2045) late (2060 2075). results revealed good performance with Nash–Sutcliffe efficiency, 0.74, relative standard error, 0.51, during validation. depths were 89.5 mm, 106.3 143.3 respectively, 5, 10, 50 years return period. indicated an by 162% 507% 259% 487% periods different ranging 5 1000 years. would cause 48.9% 122.6% large indicates possibility devastating floods his catchment due change.