Extreme rainfall incidents over Sindh province,against different return periods

High frequency and intensity of rainfall events are the major causes of flooding in pakistan. statistical distributions,i.e.,gumbell maximum (gm) distribution & generalized extreme value distribution (gev),were used to analyze annual extreme rainfalls in different cities of sindh (karachi,badin,chor,rohri). different return periods of extreme annual rainfall were calculated by using these distributions. this article also indicated that gm distribution better explains the yearly incidence of rainfall in karachi and badin while the gev distribution better explains that in chor and rohri. we also estimated 200 mm return level for sindh province in the next 100-year period. © pakistan academy of sciences.