> e.CErrOS - 



[60(MXX)- 604*000) 

 [6(mO0O-60»f0OO) 

 [60SiO0O-612fO0O) 

 [612tQ0O- 616*000) 



[616f000- 620*000) 



a(E-rfloM- K 



1966-1970 1971-19^: 



r^ f ^^ 



19^6-1910 19S1-19S5 



Elapsed Time (years) 



1986-1990 1991-1995 



Ftgure 10. Cumulative volume of materia] dredged for maintenance from the GiWW 



▼ 1 





^K Channel 



■s- 



— 1»^ 



Shoal ^^^ 





Side View 





^ 



hannel 



i 







1 



I 

 I 

 I 



i 



Plan View 



Figure 11. Idealized channel infilling pattern by a current wth 

 predominant flow direction 



V= 70,468 r' 



1 2-1 1 



where 



V = cumulative volume I cu yd I 



f = elapsed time lyearsMCOuntmgm 4-yearincremeriti; thai is. r=l meaiis 

 4 vears. r=2 means S vears. etc. > 



Cnapter2 Channel Shoaing 



15 



