Hydraulic uncertainties in flood levee capacity

Han Lin Lee, Larry W. Mays

Research output: Contribution to journalArticlepeer-review

33 Scopus citations


This paper explores hydraulic uncertainty in flood levee capacity, which results from the inability of mathematical models and/or empirical equations to describe completely the physical flow process of floods. The hydraulic uncertainty is evaluated through a first-order analysis of uncertainties of Manning's equation. This study shows that the roughness coefficient and the friction slope dominate the variation in hydraulic uncertainty in that they account for 95% of the hydraulic uncertainty. A procedure is developed for determining the hydraulic effect of friction slope uncertainty.

Original languageEnglish (US)
Pages (from-to)928-934
Number of pages7
JournalJournal of Hydraulic Engineering
Issue number10
StatePublished - Aug 1986

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Water Science and Technology
  • Mechanical Engineering


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