IV-535 



Atlantic biophysical region, which was the historical center of the 

 Nation's industrial growth and is still one of the major market 

 areas. The Pacific Southwest is the major industrial center of the 

 Pacific coast and is developed as intensively as the Middle 

 Atlantic region. Some industrial development in other Regions tends 

 to follow historical or present raw material availability. Leather 

 product plants are clustered in the North Atlantic region, and 

 lumber manufacturing plants are most plentiful in the Pacific North- 

 west. Food processing plants, however, follow closely the distribu- 

 tion of population. 



While much of the industrial development located in coastal counties 

 affects the estuarine zone indirectly through use of adjacent land, 

 some of the water-using industries have an impact on the estuarine 

 zone far beyond their numbers. The paper, chemical, petroleum, and 

 primary metals industries are the major water users among manu- 

 facturing establishments and are distributed universally throughout 

 the estuarine zone. 



USE OF THE ESTUARINE ZONE 



Many of the uses catalogued in this report occur only because the 

 historical growth of the country makes the estuarine zone the 

 place where the people and the industry are. Only commercial 

 navigation and commercial fishing are uses which are primarily 

 associated with the estuarine zone rather than other parts of man's 



