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A logical approach to the design storm concept
Author(s) -
Packman J. C.,
Kidd C. H. R.
Publication year - 1980
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/wr016i006p00994
Subject(s) - return period , storm , flood myth , hec hms , surface runoff , environmental science , hydrology (agriculture) , continuous simulation , runoff model , event (particle physics) , stormwater , computer science , meteorology , engineering , simulation , geotechnical engineering , geography , ecology , physics , archaeology , quantum mechanics , biology
Flood estimation using isolated event simulation models requires selection of a suitable combination of design storm and antecedent conditions. Current practice in storm drainage design is to adopt arbitrarily a storm duration, profile, and catchment wetness and to assume that the return periods of rainfall depth and flood peak are equal. This paper describes how sensitivity analysis may be used to examine the relationship between rainfall and flood return periods and, thereby, to determine systematically a suitable set of design inputs which give a peak runoff of the required return period. This process permits this particular model to be used with confidence in design as well as in simulation.