Question

Use the slope-area method to calculate the peak discharge of a natural streambed using the data from two sites which are 125 ft apart.

Property: Site 1: Site 2:

n=roughness 0.045 0.035

E=high water mark (ft) 18.22 15.11

A=area (ft^2) 450 410

Pw=wetten perimeter (ft) 86.314 100.323   

Answer 1