Dissemination of regional rainfall analysis in design and analysis of urban drainage at un-gauged locations

K. Arnbjerg-Nielsen, Poul Harremoes, Peter Steen Mikkelsen

Research output: Contribution to journalJournal articleResearchpeer-review


A research program in Denmark on statistical modelling of rainfall has resulted in a model for regional distribution of rainfall extremes. The results show that extreme rainfalls critical to the hydraulic function of urban drainage systems and the pollution discharge are subject to a significant regional variation of extreme rainfalls throughout the country. This has implications for design and analysis of all practical problems related to urban drainage, since the rainfall data so far recommended as input to engineering analyses underestimates the problems. Consequently, the Danish Water Pollution Control Committee has issued a statement recommending a new engineering practice. The dissemination of the research results proved to be difficult due to lack of understanding of the concepts of the new paradigm by practitioners. The traditional means of communication was supplemented by user-friendly spreadsheets and easy access to rainfall data as well as giving courses on the new paradigm. This has eased the implementation of the new concepts greatly.
Original languageEnglish
JournalWater Science and Technology
Issue number2
Pages (from-to)69-74
Publication statusPublished - 2002


  • rainfalll statistics
  • dissemination
  • regional variation
  • urban drainage
  • design

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