Flood frequency: expected and unexpected probabilities
Flood-frequency curves may be defined either with or without an ' expeced probability ' adustment; and the two curves differ in the way that they attempt to average the time-sampling uncertainties. A curve with no adustment is shown to estimate a median value of both discharge and frequency of occurrence, while an expected probability curve is shown to estimate a mean frequency of flood years. The attributes and constraints of the two types of curves for various uses are discussed.
Citation Information
Publication Year | 1976 |
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Title | Flood frequency: expected and unexpected probabilities |
DOI | 10.3133/ofr76775 |
Authors | D. M. Thomas |
Publication Type | Report |
Publication Subtype | USGS Numbered Series |
Series Title | Open-File Report |
Series Number | 76-775 |
Index ID | ofr76775 |
Record Source | USGS Publications Warehouse |