Evaluation of the storage function model parameter characteristics

Hironobu Sugiyama, Mutsumi Kadoya, Akihiro Nagai, Kevin Lansey

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


The storage function hydrograph model is one of the most commonly used models for flood runoff analysis in Japan. This paper studies the generality of the approach and its application to Japanese basins. Through a comparison of the basic equations for the models, the storage function model parameters, K, P, and T(i), are shown to be related to the terms, k and p, in the kinematic wave model. This analysis showed that P and p are identical and K and T(i) can be related to k, the basin area and its land use. To apply the storage function model throughout Japan, regional parameter relationships for K and T(i) were developed for different land-use conditions using data from 22 watersheds and 91 flood events. These relationships combine the kinematic wave parameters with general topographic information using Hack's Law. The sensitivity of the parameters and their physical significance are also described.

Original languageEnglish (US)
Pages (from-to)332-348
Number of pages17
JournalJournal of Hydrology
Issue number1-4
StatePublished - Jul 9 1997

ASJC Scopus subject areas

  • Water Science and Technology

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