r3 



Big Constance Lake 

 -29° 36' 



29°33' 



-29°30' 



vT 



COAST OF WESTERN LOUISIANA 



'1954 - 1969 lAdams et al, 1978)' 



Vermilion Bar 



Marsh Island 



■=^ 



'----^^^mm^^ 



1981 



-A- 



-^f-^^^'^^^^ 



10 15 



20 



Km 



Zone of highly 

 turbid water 



Zone of mudflot 

 accretion 



92°30' 



\ 



92°15' 



I 



Figure 3. Westward shift of areas of mudflat accretion from 1969 to 1981 



45 



