Stochastic series lumped rainfall-runoff model for a watershed in Taiwan

Chi Chun Lee, Yih Chi Tan, Chu Hui Chen, Tian-Chyi J Yeh

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The purpose of this paper is to develop a stochastic differential equation (SDE) for a lumped rainfall-runoff model and apply it to a watershed that consists of a number of subwatersheds in a series structure in Taiwan. Each subwatershed unit is treated as a two-part tank model. One part is for converting rainfall excess within the subwatershed into outflow at the subwatershed outlet. The other part converts subwatershed outflow into inflow at the next connecting subwatershed inlet. The measured values of rainfall excess are treated as random variables, and are used as input to the rainfall-runoff model. The development of the moment equations of simulated outflow is based on a SDE. The outflow hydrography is obtained by applying the Laplace transform method to the equations that describe rainfall excess.

Original languageEnglish (US)
Pages (from-to)30-45
Number of pages16
JournalJournal of Hydrology
Volume249
Issue number1-4
DOIs
StatePublished - Aug 1 2001

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subwatersheds
hydrologic models
Taiwan
watershed
runoff
rain
outflow
rainfall
Laplace transform
hydrography
inflow
hydrology

Keywords

  • Laplace transform
  • Rainfall-runoff model
  • Stochastic differential equation
  • Unit-step function

ASJC Scopus subject areas

  • Soil Science
  • Earth-Surface Processes

Cite this

Stochastic series lumped rainfall-runoff model for a watershed in Taiwan. / Lee, Chi Chun; Tan, Yih Chi; Chen, Chu Hui; Yeh, Tian-Chyi J.

In: Journal of Hydrology, Vol. 249, No. 1-4, 01.08.2001, p. 30-45.

Research output: Contribution to journalArticle

Lee, Chi Chun ; Tan, Yih Chi ; Chen, Chu Hui ; Yeh, Tian-Chyi J. / Stochastic series lumped rainfall-runoff model for a watershed in Taiwan. In: Journal of Hydrology. 2001 ; Vol. 249, No. 1-4. pp. 30-45.
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