IV-570 



Any use or activity requiring physical modification of the shoreline, 

 marshes, or bottom of an estuarine system may have a prohibitive 

 impact. Modification of water circulation also tends to be prohibitive 

 when it has any conflicting impact. Examples of estuarine uses and 

 activities generally having prohibitive impacts are navigation dredging, 

 other dredging and filling, solid waste disposal, construction of 

 bridges, dikes, jetties, and other structures, shoreline development, 

 mining from the estuarine bottom, and flow regulation. 



Some estuarine uses may restrict estuarine use for other purposes 

 but do not automatically exclude other uses. These are those activities 

 which do not require a permanent modification of the estuarine 

 system; they generally include those uses directly involved with the 

 estuarine waters and other renewable resources. 



Restrictive impacts may involve damage to water quality, living 

 organisms, or aesthetic quality; such impacts may also result from 

 the exclusive appropriation of space. The key feature of uses which 

 cause restrictive impacts is that they may, with proper management, 

 be carried out simultaneously with other uses. 



Any kind of municipal or industrial waste discharge may have a 

 restricted impact and often does. Commercial fishing, recreation, and 

 water supply are the major uses restricted by pollution from liquid 

 waste discharges. 



