Regional Flood Frequency
Four Variables: Duration (D), Area (A), Frequency & Volume
Mean discharge, Q = Volume/Duration
Q(A, D) = Q(A, 3)*[Q(D)/Q(3)] where
- Q(A, D) is the design mean discharge from area A for the maximum D day period in the flood
- Q(A, 3) is the discharge-area function for the maximum 3-day period in the flood
- Q(D)/Q(3) is the discharge-duration ratio
University of Texas at Austin