• having a horizontal distance to the low sunnier flow 

 water's edge which is equal to one-half the channel 

 top width at channel-full flow conditions 



ii) The lower limit at any location along the channel is that 

 point on the bed that has a horizontal distance to the 

 water's edge which is 10 percent of the top width of the 

 low summer flow channel. 



b. The flood- flow buffer is a zone of usually undisturbed flood- 

 plain, often vegetated, separating the material site from the 

 active channel (s) (Figure 6). Its purpose is to prevent the 



Figure 6. Schematic diagram of the flood-flow buffer. 



37 



V. SITE PREPARATION 



