274 



of the estuaries of the Pacific southwest region are heavily damaged ; 

 this reflects the intensive development of the relatively few estuarine 

 systems of this region. 



TABLE IV.5.11.— SOME ESTUARINE SYSTEMS WITH DEGRADED WATER QUALITY i 



Major source of water quality degradation 2 



Biophysical region 



Low dissolved 

 oxygen (under 

 50- percent 

 saturation) 



Bacterial 

 contamination 

 (over 1,000 m.p.n. 

 total) 



Other 



North Atlantic: 



Penobscot Bay X 



Salem, Marblehead, Nahant Bays X 



Boston Harbor. X 



Middle Atlantic: 



Providence River - X 



Connecticut River 



Port Chester, Stamford X 



Moriches Bay 



New York Harbor X 



Raritan Bay 



Cape May Inlet X 



Delaware River X 



Chesapeake Bay: 



James River X 



Potomac River X 



Baltimore Harbor X 



Choptank River .-- X 



South Atlantic: 



Cooper River (Charleston, S.C). X 



Savannah River X ' 



Altamaha River 



St. Johns River X 



Caribbean: 



Upper Biscayne Bay.. X 



San Juan Harbor X 



Gulf of Mexico: 



Tampa Bay X 



St. Joseph Bay X 



Pensacola Bay X 



Mobile Bay X 



Mississippi River 



Galveston Bay.. X 



Matagorda Bay 



Corpus Christi Bay 



Laguna Madre X 



Pacific Southwest: 



San Francisco Bay... 



Monterey Harbor 



Los Angeles Harbor X 



San Diego Bay 



Pacific Northwest: 



Columbia River 



Elliot-Bellingham Bays (Puget Sound) X 



Alaska: Silver Bay X 



Pacific Islands: Hiio Harbor 



Toxic materials. 



Excess nutrients. 



Sedimentation. 



X 



Toxic materials. 

 Sugarcane debris. 



' Inclusion in this table means only that there are zones within this system where water quality is degraded in the 

 manner shown. It does not mean that the entire estuarine system is of degraded quality. The evaluations presented are 

 based on water quality data in the National Estuarine Inventory and on additional reported data. 



- The most obvious and severe type or types of degradation are indicated; other forms of pollution may be present. 



