Sample bag 



Figure AlO. Helley-Smith bed-load sampler 

 (from Druffel et al . 1976) 



-2 2 4 6 8 10 12 14 16 18 20 



DISTANCE FROM LEFT BANK ABUTMENT, IN METERS 



Figure All. Cross -sectional view of East Fork River, 

 Wyoming slot bed-load sampler (after Emmett 1980) 



A16 



