Regional Flood-Frequency Analysis: How We Got Here and Where We Are Going

= maximum discharge; A = drainage area; andC = coefficient related to the region. O’Connell chose a valueof 0.5 for the exponent, assuming in the absence of sufficient datathat the relationship between discharge and area was parabolic(Dooge 1986).With nearly 50 years of additional data, Fuller (1914) analyzedlong records of daily flows and peak flows from around the world,but particularly from the United States. He related the average ofthe maximum floods (Q¯ ) to the drainage area with an exponentof 0.8Q¯ ¼ CA