Proceedings 13th International Conference on Urban Drainage pages:1-8
International Conference on Urban Drainage (13ICUD) edition:13th location:Sarawak, Malaysia date:7-12 september 2014
Recent studies have shown that rainfall extremes do not randomly occur in time but are subject to multi-decadal oscillations. In addition to these oscillations, there are temporal trends due to climate change. Design statistics such as intensity-duration-frequency (IDF) relationships for extreme rainfall and related design storms are affected by both types of temporal changes (short term and long term). This paper discusses these changes, how they influence urban drainage design and how this influence can be assessed and taken into account in practice.