variations in lag) and lag (due to variations in each parameter). These two elasticity values are multiplied together. Figure 5.16 outlines the results from the elasticity study.
SCS Lag Time
Figure 5.16: Elasticity Diagram
The following relationships can be drawn from Figure 5.16:
A 1% increase in longest flow path length decreases peak
discharge by 0.22%;
A 1% increase in slope increases peak discharge by 0.14%;
A 1% increase in curve number increases flow by 1%;
A 1% increase in drainage area increases flow by 1%.