220- 



210 



200- 



LiJ 



\- 

 a: 



txJ 



a 

 a 



UJ 



h- 



i- 



IxJ 



190- 



180- 



170- 



160- 



150- 



200 400 600 800 1000 



FLOW (cfs) 



1200 



1400 



1600 



Figure 2. An example of a relationship between wetted perimeter and fl 

 for a riffle cross-section. 



1-3 



ow 



