One Day Design Rainfall 10 Year Return Period

This data set contains the one day design rainfall in South Africa (SA). Quality observed streamflow data are seldom possible at the site of interest for lack of such streamflow data. Usually rainfall based methods of flood frequency estimations have to be used. This requires a probabilistic approach to analysing rainfall for design purposes. The term "design rainfall" is used to describe the depth of rainfall, for a critical duration (e.g. 5 minutes, or 1 day or 7 days), which depends on the size of the catchment, for a desired frequency of recurrence.