

PERCENT OF TOTAL COLLECTED IN BASIN 













3.5- 











3- 











2.5- 











2- 



+ 







• 



1.5- 









+ 



1 - 

 0.5- 

 0- 



+ 

 + 



+ 



+ 

 + 



+: + 



+ + + 



+ + .+ 



+ + + 



+ 



40 



50 60 70 



MIDFLOW SPEED (cm/sec) 



80 



2nd BASIN 



+ 3rd BASIN 



Figure 24. Percent of total sand collected in second and third basins 



Table 5 

 Percent Sand Flux Measured above a Specified Elevation 



Nozzle 



Elevation 



Number of 



TvDe 



cm 



Data Points 



DUCK85 



9.0 



6 



SUPERDUCK 



4.5 



20* 





4.8 



2 





6.5 



4 



CUBE 



8.3 



9 



Percent 



Standard 



Sand above 



Deviation 



Elevation 



percent 



1.8 



2.7 



4.3 



2.7 



2.8 



3.0 



3.5 



4.3 



1.0 



1.6 



Omit outlier (Run 4, 4-6-88, 25.4 percent collected above 4.5 cm with mid- 

 flow speed equal to 43.8 cm/sec). 



55 



