Reliability analysis of design discharge for mountainous gully flow

Jinn Chyi Chen, Chyan Deng Jan, Ming Hsi Lee

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


A probabilistic equation of design discharge for a mountainous gully was derived in terms of reliability probability. Its derivation was based on the rational formula, the rainfall-intensity-duration formula, and the First-Order Second-Moment method (FOSM) by considering the uncertainty of parameters, such as the annual rainfall, the runoff coefficient, the watershed area, the sediment concentration, the length and velocity of overland flow, and the horizontal length and elevation difference of a gully, involved in the formulas. The probabilistic equation was also applied to the probabilistic design discharge for a debris-flow-prone gully in Taiwan.

Original languageEnglish
Pages (from-to)835-838
Number of pages4
JournalJournal of Hydraulic Research
Issue number6
Publication statusPublished - 2008

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Water Science and Technology


Dive into the research topics of 'Reliability analysis of design discharge for mountainous gully flow'. Together they form a unique fingerprint.

Cite this