USGS SIR 2009-5087 Regression Equations for Estimation of Annual Peak-Streamflow Frequency for Undeveloped Watersheds in Texas Using an L-moment-Based, PRESS-Minimized, Residual-Adjusted Approach
Omega EM (Map) Mapped values of Omega EM
Mean Annual Precipitation (Map) Mapped Values of Mean Annual Precipitation for Texas
Estimates discharge in US customary units from
Copy the Equation Table Here
where:
Q_T is the T-year discharge (cubic feet per second)
Omega EM is the relief-location metric
P is mean annual precipitation in inches
S is dimensionless slope
A is drainage area in square miles