oa Civil Engineer in South Africa - Sizing of urban flood control ponds

Volume 23, Issue 5
  • ISSN : 0009-7845



The sizing of urban flood control ponds is discussed and a simple procedure is presented for preliminary estimates of the storage requirement. The method assumes a constant outflow rate and makes use of an empirical equation for the rainfall intensity-duration-frequency (IDF) relationship. Methods of obtaining the empirical IDF coefficients are presented, as well as regional coefficients which can be used in the absence of local data. The method is easy to use and is presented in the form of graphs.

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