IV-539 



the Fiscal Year 1967 this number was 931 with a planned increase 

 to 960 in the Fiscal Year 1969. 



The use of the harbors for waterborne transportation is competitive 

 in that it may cause other uses to be foregone. Heavy ship 

 traffic interferes with pleasure boating and related activities 

 (Figure IV. 55). Maintenance of the ship channels may alter the 

 ecology and the surface area occupied by the large vessels may 

 well interfere with safe pleasure boating. 



Water transportation is not the only type of transportation con- 

 sideration for estuaries. Since a major percentage of large cities 

 are located on estuarine systems, there is considerable pressure 

 to develop fill areas for airports which then utilize the long 

 overwater approaches to keep the jet noise away from developed 

 areas. The water areas offer a barrier to land travel that 

 must be overcome with causeways or bridge type structures which 

 can interfere with navigation or cause habitat damage. On the 

 other hand, peripheral roads offer some of the more scenic routes 

 available and are frequently the only undeveloped are on which 

 roads can be built. 



MUNICIPAL AMD INDUSTRIAL WATER SUPPLY 



The water in the estuary can serve as a source of both domestic 

 and industrial water supply; but utilization of estuarine water for 

 domestic supply is very limited at the present time. Normally 



