IV-162 



or present raw material availability. Leather product plants are 

 clustered 1n the North Atlantic region, and lumber manufacturing 

 plants are most plentiful in the Pacific Northwest. Food proces- 

 sing plants, however, follow closely the distribution 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 manufactur- 

 ing establishments; these are listed separately in Table IV. 3. 2 to 

 show how universally these industries are distributed throughout 

 the estuarine zone. The brackish estuarine waters may become an 

 Increasingly important source of water supply for Industries, and 

 for municipalities as desalting technology improves. 



LAND OWNERSHIP 



Out of the millions of acres of land contiguous to the estuarine 

 zone, only a relatively small amount 1s relegated to urban develop- 

 ment and farmland- A considerable portion 1s in the form of unused 

 or undeveloped land, the ownership of which has an important bear- 

 ing on future use of the estuarine environment. Privately owned 

 land is subject to possible industrial or real estate development 

 which could add significantly to water quality problems. Publicly 

 owned land, on the other hand, represents the potential for 



